./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/test-easy10.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b0a0ca-5f82-4a84-983e-96337ef8ea56/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b0a0ca-5f82-4a84-983e-96337ef8ea56/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b0a0ca-5f82-4a84-983e-96337ef8ea56/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b0a0ca-5f82-4a84-983e-96337ef8ea56/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/test-easy10.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b0a0ca-5f82-4a84-983e-96337ef8ea56/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b0a0ca-5f82-4a84-983e-96337ef8ea56/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58ff882a2a27d6746f141646b2befb8bb2c361fcab13fbe9966095432ec78b12 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:49:23,250 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:49:23,317 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b0a0ca-5f82-4a84-983e-96337ef8ea56/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 16:49:23,323 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:49:23,324 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:49:23,350 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:49:23,350 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:49:23,351 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:49:23,352 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:49:23,352 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:49:23,353 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:49:23,353 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:49:23,354 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:49:23,354 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:49:23,355 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:49:23,355 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:49:23,356 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:49:23,356 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:49:23,357 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:49:23,357 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:49:23,358 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:49:23,359 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:49:23,360 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 16:49:23,360 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 16:49:23,361 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:49:23,361 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:49:23,362 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:49:23,362 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:49:23,362 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:49:23,363 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 16:49:23,363 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 16:49:23,364 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 16:49:23,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:49:23,364 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 16:49:23,364 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 16:49:23,365 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:49:23,365 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:49:23,365 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:49:23,365 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:49:23,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:49:23,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:49:23,366 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:49:23,367 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:49:23,367 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:49:23,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:49:23,367 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:49:23,367 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:49:23,368 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:49:23,368 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b0a0ca-5f82-4a84-983e-96337ef8ea56/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b0a0ca-5f82-4a84-983e-96337ef8ea56/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58ff882a2a27d6746f141646b2befb8bb2c361fcab13fbe9966095432ec78b12 [2023-12-02 16:49:23,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:49:23,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:49:23,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:49:23,619 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:49:23,619 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:49:23,620 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b0a0ca-5f82-4a84-983e-96337ef8ea56/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/weaver/test-easy10.wvr.c [2023-12-02 16:49:26,361 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:49:26,520 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:49:26,521 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b0a0ca-5f82-4a84-983e-96337ef8ea56/sv-benchmarks/c/weaver/test-easy10.wvr.c [2023-12-02 16:49:26,528 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b0a0ca-5f82-4a84-983e-96337ef8ea56/bin/utaipan-verify-nQ1chXbOIh/data/943b8173d/c6fa6b59d656450e95c3430b1e898f41/FLAGe5bdfc26f [2023-12-02 16:49:26,539 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b0a0ca-5f82-4a84-983e-96337ef8ea56/bin/utaipan-verify-nQ1chXbOIh/data/943b8173d/c6fa6b59d656450e95c3430b1e898f41 [2023-12-02 16:49:26,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:49:26,542 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:49:26,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:49:26,544 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:49:26,549 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:49:26,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:49:26" (1/1) ... [2023-12-02 16:49:26,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5887deae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:49:26, skipping insertion in model container [2023-12-02 16:49:26,551 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:49:26" (1/1) ... [2023-12-02 16:49:26,577 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:49:26,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:49:26,747 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:49:26,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:49:26,785 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:49:26,786 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:49:26,793 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:49:26,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:49:26 WrapperNode [2023-12-02 16:49:26,794 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:49:26,795 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:49:26,795 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:49:26,795 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:49:26,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:49:26" (1/1) ... [2023-12-02 16:49:26,813 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:49:26" (1/1) ... [2023-12-02 16:49:26,840 INFO L138 Inliner]: procedures = 23, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 197 [2023-12-02 16:49:26,840 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:49:26,841 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:49:26,841 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:49:26,842 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:49:26,851 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:49:26" (1/1) ... [2023-12-02 16:49:26,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:49:26" (1/1) ... [2023-12-02 16:49:26,855 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:49:26" (1/1) ... [2023-12-02 16:49:26,855 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:49:26" (1/1) ... [2023-12-02 16:49:26,863 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:49:26" (1/1) ... [2023-12-02 16:49:26,865 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:49:26" (1/1) ... [2023-12-02 16:49:26,867 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:49:26" (1/1) ... [2023-12-02 16:49:26,869 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:49:26" (1/1) ... [2023-12-02 16:49:26,873 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:49:26,874 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:49:26,874 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:49:26,874 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:49:26,875 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:49:26" (1/1) ... [2023-12-02 16:49:26,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:49:26,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b0a0ca-5f82-4a84-983e-96337ef8ea56/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:49:26,908 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b0a0ca-5f82-4a84-983e-96337ef8ea56/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:49:26,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b0a0ca-5f82-4a84-983e-96337ef8ea56/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:49:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:49:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-02 16:49:26,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-02 16:49:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-02 16:49:26,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-02 16:49:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-02 16:49:26,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-02 16:49:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-12-02 16:49:26,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-12-02 16:49:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:49:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 16:49:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 16:49:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-02 16:49:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-02 16:49:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:49:26,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:49:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 16:49:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 16:49:26,947 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 16:49:27,048 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:49:27,050 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:49:27,324 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:49:27,529 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:49:27,529 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 16:49:27,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:49:27 BoogieIcfgContainer [2023-12-02 16:49:27,530 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:49:27,532 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:49:27,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:49:27,535 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:49:27,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:49:26" (1/3) ... [2023-12-02 16:49:27,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc25de7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:49:27, skipping insertion in model container [2023-12-02 16:49:27,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:49:26" (2/3) ... [2023-12-02 16:49:27,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc25de7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:49:27, skipping insertion in model container [2023-12-02 16:49:27,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:49:27" (3/3) ... [2023-12-02 16:49:27,537 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2023-12-02 16:49:27,552 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:49:27,552 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-12-02 16:49:27,552 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 16:49:27,606 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-12-02 16:49:27,635 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 94 places, 81 transitions, 190 flow [2023-12-02 16:49:29,118 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 41005 states, 40987 states have (on average 4.197526044843487) internal successors, (172044), 41004 states have internal predecessors, (172044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:29,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:49:29,145 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6fa3ad00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:49:29,146 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-12-02 16:49:29,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 41005 states, 40987 states have (on average 4.197526044843487) internal successors, (172044), 41004 states have internal predecessors, (172044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:29,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 16:49:29,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:49:29,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 16:49:29,218 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:49:29,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:49:29,223 INFO L85 PathProgramCache]: Analyzing trace with hash 12619, now seen corresponding path program 1 times [2023-12-02 16:49:29,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:49:29,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703828528] [2023-12-02 16:49:29,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:49:29,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:49:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:49:29,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:49:29,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:49:29,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703828528] [2023-12-02 16:49:29,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703828528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:49:29,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:49:29,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:49:29,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001656094] [2023-12-02 16:49:29,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:49:29,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:49:29,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:49:29,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:49:29,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:49:29,745 INFO L87 Difference]: Start difference. First operand has 41005 states, 40987 states have (on average 4.197526044843487) internal successors, (172044), 41004 states have internal predecessors, (172044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:30,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:49:30,492 INFO L93 Difference]: Finished difference Result 34441 states and 142152 transitions. [2023-12-02 16:49:30,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:49:30,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-12-02 16:49:30,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:49:30,933 INFO L225 Difference]: With dead ends: 34441 [2023-12-02 16:49:30,934 INFO L226 Difference]: Without dead ends: 34441 [2023-12-02 16:49:30,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:49:30,940 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 71 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:49:30,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 34 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:49:31,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34441 states. [2023-12-02 16:49:32,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34441 to 34441. [2023-12-02 16:49:32,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34441 states, 34426 states have (on average 4.129204670888282) internal successors, (142152), 34440 states have internal predecessors, (142152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:32,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34441 states to 34441 states and 142152 transitions. [2023-12-02 16:49:32,790 INFO L78 Accepts]: Start accepts. Automaton has 34441 states and 142152 transitions. Word has length 2 [2023-12-02 16:49:32,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:49:32,790 INFO L495 AbstractCegarLoop]: Abstraction has 34441 states and 142152 transitions. [2023-12-02 16:49:32,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:32,791 INFO L276 IsEmpty]: Start isEmpty. Operand 34441 states and 142152 transitions. [2023-12-02 16:49:32,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 16:49:32,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:49:32,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 16:49:32,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:49:32,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:49:32,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:49:32,793 INFO L85 PathProgramCache]: Analyzing trace with hash 12620, now seen corresponding path program 1 times [2023-12-02 16:49:32,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:49:32,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265040751] [2023-12-02 16:49:32,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:49:32,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:49:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:49:32,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:49:32,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:49:32,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265040751] [2023-12-02 16:49:32,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265040751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:49:32,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:49:32,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:49:32,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650784269] [2023-12-02 16:49:32,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:49:32,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:49:32,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:49:32,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:49:32,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:49:32,933 INFO L87 Difference]: Start difference. First operand 34441 states and 142152 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:33,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:49:33,481 INFO L93 Difference]: Finished difference Result 27879 states and 112262 transitions. [2023-12-02 16:49:33,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:49:33,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-12-02 16:49:33,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:49:33,659 INFO L225 Difference]: With dead ends: 27879 [2023-12-02 16:49:33,660 INFO L226 Difference]: Without dead ends: 27879 [2023-12-02 16:49:33,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:49:33,661 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 69 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:49:33,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 34 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:49:33,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27879 states. [2023-12-02 16:49:34,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27879 to 27879. [2023-12-02 16:49:34,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27879 states, 27866 states have (on average 4.0286370487332235) internal successors, (112262), 27878 states have internal predecessors, (112262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:34,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27879 states to 27879 states and 112262 transitions. [2023-12-02 16:49:34,588 INFO L78 Accepts]: Start accepts. Automaton has 27879 states and 112262 transitions. Word has length 2 [2023-12-02 16:49:34,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:49:34,589 INFO L495 AbstractCegarLoop]: Abstraction has 27879 states and 112262 transitions. [2023-12-02 16:49:34,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:34,589 INFO L276 IsEmpty]: Start isEmpty. Operand 27879 states and 112262 transitions. [2023-12-02 16:49:34,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 16:49:34,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:49:34,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 16:49:34,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 16:49:34,590 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:49:34,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:49:34,591 INFO L85 PathProgramCache]: Analyzing trace with hash 376334815, now seen corresponding path program 1 times [2023-12-02 16:49:34,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:49:34,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667268127] [2023-12-02 16:49:34,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:49:34,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:49:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:49:34,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:49:34,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:49:34,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667268127] [2023-12-02 16:49:34,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667268127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:49:34,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:49:34,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:49:34,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314613740] [2023-12-02 16:49:34,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:49:34,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:49:34,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:49:34,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:49:34,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:49:34,701 INFO L87 Difference]: Start difference. First operand 27879 states and 112262 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:35,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:49:35,102 INFO L93 Difference]: Finished difference Result 27141 states and 109572 transitions. [2023-12-02 16:49:35,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:49:35,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-02 16:49:35,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:49:35,203 INFO L225 Difference]: With dead ends: 27141 [2023-12-02 16:49:35,203 INFO L226 Difference]: Without dead ends: 27141 [2023-12-02 16:49:35,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:49:35,204 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 64 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:49:35,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 32 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:49:35,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27141 states. [2023-12-02 16:49:35,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27141 to 27141. [2023-12-02 16:49:36,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27141 states, 27130 states have (on average 4.038776262440103) internal successors, (109572), 27140 states have internal predecessors, (109572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:36,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27141 states to 27141 states and 109572 transitions. [2023-12-02 16:49:36,117 INFO L78 Accepts]: Start accepts. Automaton has 27141 states and 109572 transitions. Word has length 5 [2023-12-02 16:49:36,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:49:36,117 INFO L495 AbstractCegarLoop]: Abstraction has 27141 states and 109572 transitions. [2023-12-02 16:49:36,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:36,117 INFO L276 IsEmpty]: Start isEmpty. Operand 27141 states and 109572 transitions. [2023-12-02 16:49:36,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 16:49:36,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:49:36,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 16:49:36,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 16:49:36,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:49:36,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:49:36,119 INFO L85 PathProgramCache]: Analyzing trace with hash 376334816, now seen corresponding path program 1 times [2023-12-02 16:49:36,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:49:36,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513451852] [2023-12-02 16:49:36,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:49:36,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:49:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:49:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:49:36,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:49:36,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513451852] [2023-12-02 16:49:36,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513451852] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:49:36,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:49:36,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:49:36,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678611832] [2023-12-02 16:49:36,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:49:36,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:49:36,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:49:36,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:49:36,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:49:36,213 INFO L87 Difference]: Start difference. First operand 27141 states and 109572 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:36,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:49:36,401 INFO L93 Difference]: Finished difference Result 26403 states and 106882 transitions. [2023-12-02 16:49:36,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:49:36,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-02 16:49:36,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:49:36,742 INFO L225 Difference]: With dead ends: 26403 [2023-12-02 16:49:36,742 INFO L226 Difference]: Without dead ends: 26403 [2023-12-02 16:49:36,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:49:36,744 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 62 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:49:36,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 32 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:49:36,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26403 states. [2023-12-02 16:49:37,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26403 to 26403. [2023-12-02 16:49:37,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26403 states, 26394 states have (on average 4.049480942638478) internal successors, (106882), 26402 states have internal predecessors, (106882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:37,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26403 states to 26403 states and 106882 transitions. [2023-12-02 16:49:37,668 INFO L78 Accepts]: Start accepts. Automaton has 26403 states and 106882 transitions. Word has length 5 [2023-12-02 16:49:37,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:49:37,668 INFO L495 AbstractCegarLoop]: Abstraction has 26403 states and 106882 transitions. [2023-12-02 16:49:37,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:37,669 INFO L276 IsEmpty]: Start isEmpty. Operand 26403 states and 106882 transitions. [2023-12-02 16:49:37,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 16:49:37,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:49:37,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:49:37,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 16:49:37,670 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:49:37,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:49:37,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1526238028, now seen corresponding path program 1 times [2023-12-02 16:49:37,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:49:37,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392801206] [2023-12-02 16:49:37,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:49:37,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:49:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:49:37,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:49:37,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:49:37,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392801206] [2023-12-02 16:49:37,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392801206] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:49:37,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:49:37,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:49:37,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698720865] [2023-12-02 16:49:37,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:49:37,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:49:37,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:49:37,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:49:37,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:49:37,737 INFO L87 Difference]: Start difference. First operand 26403 states and 106882 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:37,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:49:37,921 INFO L93 Difference]: Finished difference Result 26241 states and 106432 transitions. [2023-12-02 16:49:37,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:49:37,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-02 16:49:37,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:49:38,043 INFO L225 Difference]: With dead ends: 26241 [2023-12-02 16:49:38,044 INFO L226 Difference]: Without dead ends: 26241 [2023-12-02 16:49:38,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:49:38,045 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:49:38,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 30 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:49:38,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26241 states. [2023-12-02 16:49:38,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26241 to 26241. [2023-12-02 16:49:38,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26241 states, 26234 states have (on average 4.057025234428604) internal successors, (106432), 26240 states have internal predecessors, (106432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:39,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26241 states to 26241 states and 106432 transitions. [2023-12-02 16:49:39,028 INFO L78 Accepts]: Start accepts. Automaton has 26241 states and 106432 transitions. Word has length 8 [2023-12-02 16:49:39,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:49:39,028 INFO L495 AbstractCegarLoop]: Abstraction has 26241 states and 106432 transitions. [2023-12-02 16:49:39,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:39,028 INFO L276 IsEmpty]: Start isEmpty. Operand 26241 states and 106432 transitions. [2023-12-02 16:49:39,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 16:49:39,029 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:49:39,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:49:39,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 16:49:39,029 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:49:39,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:49:39,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1526238029, now seen corresponding path program 1 times [2023-12-02 16:49:39,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:49:39,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611703985] [2023-12-02 16:49:39,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:49:39,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:49:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:49:39,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:49:39,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:49:39,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611703985] [2023-12-02 16:49:39,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611703985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:49:39,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:49:39,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:49:39,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576057037] [2023-12-02 16:49:39,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:49:39,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:49:39,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:49:39,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:49:39,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:49:39,130 INFO L87 Difference]: Start difference. First operand 26241 states and 106432 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:39,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:49:39,324 INFO L93 Difference]: Finished difference Result 26079 states and 105982 transitions. [2023-12-02 16:49:39,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:49:39,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-02 16:49:39,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:49:39,406 INFO L225 Difference]: With dead ends: 26079 [2023-12-02 16:49:39,407 INFO L226 Difference]: Without dead ends: 26079 [2023-12-02 16:49:39,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:49:39,408 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 55 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:49:39,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 30 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:49:39,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26079 states. [2023-12-02 16:49:40,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26079 to 26079. [2023-12-02 16:49:40,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26079 states, 26074 states have (on average 4.064662115517374) internal successors, (105982), 26078 states have internal predecessors, (105982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:40,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26079 states to 26079 states and 105982 transitions. [2023-12-02 16:49:40,431 INFO L78 Accepts]: Start accepts. Automaton has 26079 states and 105982 transitions. Word has length 8 [2023-12-02 16:49:40,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:49:40,432 INFO L495 AbstractCegarLoop]: Abstraction has 26079 states and 105982 transitions. [2023-12-02 16:49:40,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:40,432 INFO L276 IsEmpty]: Start isEmpty. Operand 26079 states and 105982 transitions. [2023-12-02 16:49:40,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 16:49:40,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:49:40,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:49:40,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 16:49:40,434 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:49:40,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:49:40,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1633701249, now seen corresponding path program 1 times [2023-12-02 16:49:40,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:49:40,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620960918] [2023-12-02 16:49:40,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:49:40,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:49:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:49:40,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:49:40,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:49:40,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620960918] [2023-12-02 16:49:40,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620960918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:49:40,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:49:40,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:49:40,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906880614] [2023-12-02 16:49:40,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:49:40,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:49:40,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:49:40,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:49:40,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:49:40,498 INFO L87 Difference]: Start difference. First operand 26079 states and 105982 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:40,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:49:40,769 INFO L93 Difference]: Finished difference Result 25341 states and 103292 transitions. [2023-12-02 16:49:40,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:49:40,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-02 16:49:40,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:49:41,070 INFO L225 Difference]: With dead ends: 25341 [2023-12-02 16:49:41,070 INFO L226 Difference]: Without dead ends: 25341 [2023-12-02 16:49:41,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:49:41,071 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:49:41,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 28 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:49:41,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25341 states. [2023-12-02 16:49:41,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25341 to 25341. [2023-12-02 16:49:41,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25341 states, 25338 states have (on average 4.076564843318336) internal successors, (103292), 25340 states have internal predecessors, (103292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:41,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25341 states to 25341 states and 103292 transitions. [2023-12-02 16:49:41,646 INFO L78 Accepts]: Start accepts. Automaton has 25341 states and 103292 transitions. Word has length 11 [2023-12-02 16:49:41,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:49:41,646 INFO L495 AbstractCegarLoop]: Abstraction has 25341 states and 103292 transitions. [2023-12-02 16:49:41,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:41,646 INFO L276 IsEmpty]: Start isEmpty. Operand 25341 states and 103292 transitions. [2023-12-02 16:49:41,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 16:49:41,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:49:41,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:49:41,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 16:49:41,648 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:49:41,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:49:41,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1633701250, now seen corresponding path program 1 times [2023-12-02 16:49:41,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:49:41,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742439439] [2023-12-02 16:49:41,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:49:41,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:49:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:49:41,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:49:41,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:49:41,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742439439] [2023-12-02 16:49:41,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742439439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:49:41,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:49:41,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:49:41,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299666551] [2023-12-02 16:49:41,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:49:41,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:49:41,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:49:41,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:49:41,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:49:41,710 INFO L87 Difference]: Start difference. First operand 25341 states and 103292 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:42,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:49:42,111 INFO L93 Difference]: Finished difference Result 24603 states and 100602 transitions. [2023-12-02 16:49:42,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:49:42,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-02 16:49:42,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:49:42,187 INFO L225 Difference]: With dead ends: 24603 [2023-12-02 16:49:42,187 INFO L226 Difference]: Without dead ends: 24603 [2023-12-02 16:49:42,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:49:42,188 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:49:42,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 28 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:49:42,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24603 states. [2023-12-02 16:49:42,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24603 to 24603. [2023-12-02 16:49:42,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24603 states, 24602 states have (on average 4.089179741484432) internal successors, (100602), 24602 states have internal predecessors, (100602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:42,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24603 states to 24603 states and 100602 transitions. [2023-12-02 16:49:42,975 INFO L78 Accepts]: Start accepts. Automaton has 24603 states and 100602 transitions. Word has length 11 [2023-12-02 16:49:42,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:49:42,975 INFO L495 AbstractCegarLoop]: Abstraction has 24603 states and 100602 transitions. [2023-12-02 16:49:42,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:42,975 INFO L276 IsEmpty]: Start isEmpty. Operand 24603 states and 100602 transitions. [2023-12-02 16:49:43,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:49:43,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:49:43,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:49:43,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 16:49:43,059 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:49:43,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:49:43,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1966321346, now seen corresponding path program 1 times [2023-12-02 16:49:43,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:49:43,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773408998] [2023-12-02 16:49:43,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:49:43,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:49:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:49:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:49:43,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:49:43,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773408998] [2023-12-02 16:49:43,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773408998] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:49:43,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:49:43,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:49:43,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922707170] [2023-12-02 16:49:43,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:49:43,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:49:43,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:49:43,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:49:43,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:49:43,239 INFO L87 Difference]: Start difference. First operand 24603 states and 100602 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:43,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:49:43,414 INFO L93 Difference]: Finished difference Result 19251 states and 77802 transitions. [2023-12-02 16:49:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:49:43,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:49:43,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:49:43,471 INFO L225 Difference]: With dead ends: 19251 [2023-12-02 16:49:43,471 INFO L226 Difference]: Without dead ends: 19251 [2023-12-02 16:49:43,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:49:43,472 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 30 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:49:43,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 66 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:49:43,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19251 states. [2023-12-02 16:49:44,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19251 to 19251. [2023-12-02 16:49:44,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19251 states, 19250 states have (on average 4.041662337662338) internal successors, (77802), 19250 states have internal predecessors, (77802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:44,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19251 states to 19251 states and 77802 transitions. [2023-12-02 16:49:44,120 INFO L78 Accepts]: Start accepts. Automaton has 19251 states and 77802 transitions. Word has length 58 [2023-12-02 16:49:44,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:49:44,121 INFO L495 AbstractCegarLoop]: Abstraction has 19251 states and 77802 transitions. [2023-12-02 16:49:44,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:44,121 INFO L276 IsEmpty]: Start isEmpty. Operand 19251 states and 77802 transitions. [2023-12-02 16:49:44,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:49:44,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:49:44,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:49:44,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 16:49:44,177 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:49:44,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:49:44,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1286165468, now seen corresponding path program 2 times [2023-12-02 16:49:44,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:49:44,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107315161] [2023-12-02 16:49:44,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:49:44,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:49:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:49:44,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:49:44,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:49:44,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107315161] [2023-12-02 16:49:44,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107315161] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:49:44,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:49:44,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:49:44,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887367777] [2023-12-02 16:49:44,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:49:44,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:49:44,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:49:44,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:49:44,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:49:44,342 INFO L87 Difference]: Start difference. First operand 19251 states and 77802 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:44,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:49:44,501 INFO L93 Difference]: Finished difference Result 15051 states and 60122 transitions. [2023-12-02 16:49:44,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:49:44,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:49:44,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:49:44,567 INFO L225 Difference]: With dead ends: 15051 [2023-12-02 16:49:44,567 INFO L226 Difference]: Without dead ends: 15051 [2023-12-02 16:49:44,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:49:44,568 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 25 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:49:44,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 64 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:49:44,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15051 states. [2023-12-02 16:49:44,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15051 to 15051. [2023-12-02 16:49:44,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15051 states, 15050 states have (on average 3.9948172757475082) internal successors, (60122), 15050 states have internal predecessors, (60122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:45,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15051 states to 15051 states and 60122 transitions. [2023-12-02 16:49:45,055 INFO L78 Accepts]: Start accepts. Automaton has 15051 states and 60122 transitions. Word has length 58 [2023-12-02 16:49:45,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:49:45,056 INFO L495 AbstractCegarLoop]: Abstraction has 15051 states and 60122 transitions. [2023-12-02 16:49:45,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:45,056 INFO L276 IsEmpty]: Start isEmpty. Operand 15051 states and 60122 transitions. [2023-12-02 16:49:45,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:49:45,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:49:45,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:49:45,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 16:49:45,099 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:49:45,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:49:45,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1631677772, now seen corresponding path program 3 times [2023-12-02 16:49:45,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:49:45,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044225489] [2023-12-02 16:49:45,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:49:45,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:49:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:49:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:49:47,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:49:47,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044225489] [2023-12-02 16:49:47,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044225489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:49:47,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:49:47,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:49:47,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197682488] [2023-12-02 16:49:47,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:49:47,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:49:47,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:49:47,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:49:47,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:49:47,765 INFO L87 Difference]: Start difference. First operand 15051 states and 60122 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:49,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:49:49,908 INFO L93 Difference]: Finished difference Result 30736 states and 116828 transitions. [2023-12-02 16:49:49,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:49:49,909 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:49:49,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:49:50,008 INFO L225 Difference]: With dead ends: 30736 [2023-12-02 16:49:50,008 INFO L226 Difference]: Without dead ends: 30477 [2023-12-02 16:49:50,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:49:50,009 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 388 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:49:50,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 1040 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 16:49:50,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30477 states. [2023-12-02 16:49:50,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30477 to 16032. [2023-12-02 16:49:50,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16032 states, 16031 states have (on average 3.9611377955211777) internal successors, (63501), 16031 states have internal predecessors, (63501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:50,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16032 states to 16032 states and 63501 transitions. [2023-12-02 16:49:50,535 INFO L78 Accepts]: Start accepts. Automaton has 16032 states and 63501 transitions. Word has length 58 [2023-12-02 16:49:50,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:49:50,535 INFO L495 AbstractCegarLoop]: Abstraction has 16032 states and 63501 transitions. [2023-12-02 16:49:50,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:50,535 INFO L276 IsEmpty]: Start isEmpty. Operand 16032 states and 63501 transitions. [2023-12-02 16:49:50,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:49:50,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:49:50,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:49:50,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 16:49:50,565 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:49:50,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:49:50,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1729315508, now seen corresponding path program 4 times [2023-12-02 16:49:50,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:49:50,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466327601] [2023-12-02 16:49:50,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:49:50,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:49:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:49:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:49:52,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:49:52,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466327601] [2023-12-02 16:49:52,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466327601] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:49:52,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:49:52,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:49:52,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075105007] [2023-12-02 16:49:52,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:49:52,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:49:52,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:49:52,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:49:52,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:49:52,865 INFO L87 Difference]: Start difference. First operand 16032 states and 63501 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:54,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:49:54,810 INFO L93 Difference]: Finished difference Result 30769 states and 116815 transitions. [2023-12-02 16:49:54,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:49:54,810 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:49:54,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:49:54,960 INFO L225 Difference]: With dead ends: 30769 [2023-12-02 16:49:54,960 INFO L226 Difference]: Without dead ends: 30636 [2023-12-02 16:49:54,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=170, Invalid=336, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:49:54,961 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 479 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:49:54,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 895 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:49:55,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30636 states. [2023-12-02 16:49:55,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30636 to 16053. [2023-12-02 16:49:55,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16053 states, 16052 states have (on average 3.959257413406429) internal successors, (63554), 16052 states have internal predecessors, (63554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:55,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16053 states to 16053 states and 63554 transitions. [2023-12-02 16:49:55,645 INFO L78 Accepts]: Start accepts. Automaton has 16053 states and 63554 transitions. Word has length 58 [2023-12-02 16:49:55,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:49:55,646 INFO L495 AbstractCegarLoop]: Abstraction has 16053 states and 63554 transitions. [2023-12-02 16:49:55,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:55,646 INFO L276 IsEmpty]: Start isEmpty. Operand 16053 states and 63554 transitions. [2023-12-02 16:49:55,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:49:55,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:49:55,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:49:55,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 16:49:55,687 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:49:55,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:49:55,687 INFO L85 PathProgramCache]: Analyzing trace with hash 155670826, now seen corresponding path program 5 times [2023-12-02 16:49:55,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:49:55,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950369579] [2023-12-02 16:49:55,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:49:55,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:49:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:49:57,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:49:57,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:49:57,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950369579] [2023-12-02 16:49:57,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950369579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:49:57,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:49:57,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:49:57,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239739564] [2023-12-02 16:49:57,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:49:57,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:49:57,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:49:57,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:49:57,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:49:57,699 INFO L87 Difference]: Start difference. First operand 16053 states and 63554 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:59,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:49:59,371 INFO L93 Difference]: Finished difference Result 30634 states and 116443 transitions. [2023-12-02 16:49:59,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:49:59,372 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:49:59,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:49:59,462 INFO L225 Difference]: With dead ends: 30634 [2023-12-02 16:49:59,462 INFO L226 Difference]: Without dead ends: 30414 [2023-12-02 16:49:59,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:49:59,463 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 437 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:49:59,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 915 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:49:59,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30414 states. [2023-12-02 16:49:59,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30414 to 15969. [2023-12-02 16:49:59,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15969 states, 15968 states have (on average 3.962863226452906) internal successors, (63279), 15968 states have internal predecessors, (63279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:59,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15969 states to 15969 states and 63279 transitions. [2023-12-02 16:49:59,974 INFO L78 Accepts]: Start accepts. Automaton has 15969 states and 63279 transitions. Word has length 58 [2023-12-02 16:49:59,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:49:59,974 INFO L495 AbstractCegarLoop]: Abstraction has 15969 states and 63279 transitions. [2023-12-02 16:49:59,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:49:59,975 INFO L276 IsEmpty]: Start isEmpty. Operand 15969 states and 63279 transitions. [2023-12-02 16:50:00,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:50:00,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:00,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:50:00,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 16:50:00,013 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:50:00,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:00,013 INFO L85 PathProgramCache]: Analyzing trace with hash -450314710, now seen corresponding path program 6 times [2023-12-02 16:50:00,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:00,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914131256] [2023-12-02 16:50:00,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:00,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:01,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:50:01,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:01,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914131256] [2023-12-02 16:50:01,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914131256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:01,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:50:01,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:50:01,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412564556] [2023-12-02 16:50:01,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:01,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:50:01,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:01,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:50:01,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:50:01,961 INFO L87 Difference]: Start difference. First operand 15969 states and 63279 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:03,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:03,955 INFO L93 Difference]: Finished difference Result 30763 states and 116809 transitions. [2023-12-02 16:50:03,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:50:03,955 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:50:03,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:04,063 INFO L225 Difference]: With dead ends: 30763 [2023-12-02 16:50:04,063 INFO L226 Difference]: Without dead ends: 30630 [2023-12-02 16:50:04,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=209, Invalid=391, Unknown=0, NotChecked=0, Total=600 [2023-12-02 16:50:04,064 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 445 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:04,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 932 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:50:04,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30630 states. [2023-12-02 16:50:04,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30630 to 16032. [2023-12-02 16:50:04,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16032 states, 16031 states have (on average 3.9598278335724535) internal successors, (63480), 16031 states have internal predecessors, (63480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:04,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16032 states to 16032 states and 63480 transitions. [2023-12-02 16:50:04,699 INFO L78 Accepts]: Start accepts. Automaton has 16032 states and 63480 transitions. Word has length 58 [2023-12-02 16:50:04,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:04,700 INFO L495 AbstractCegarLoop]: Abstraction has 16032 states and 63480 transitions. [2023-12-02 16:50:04,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:04,700 INFO L276 IsEmpty]: Start isEmpty. Operand 16032 states and 63480 transitions. [2023-12-02 16:50:04,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:50:04,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:04,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:50:04,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 16:50:04,739 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:50:04,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:04,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1434671624, now seen corresponding path program 7 times [2023-12-02 16:50:04,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:04,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603343477] [2023-12-02 16:50:04,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:04,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:06,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:50:06,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:06,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603343477] [2023-12-02 16:50:06,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603343477] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:06,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:50:06,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:50:06,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993671287] [2023-12-02 16:50:06,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:06,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:50:06,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:06,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:50:06,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:50:06,513 INFO L87 Difference]: Start difference. First operand 16032 states and 63480 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:08,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:08,172 INFO L93 Difference]: Finished difference Result 30766 states and 116794 transitions. [2023-12-02 16:50:08,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:50:08,173 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:50:08,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:08,281 INFO L225 Difference]: With dead ends: 30766 [2023-12-02 16:50:08,281 INFO L226 Difference]: Without dead ends: 30609 [2023-12-02 16:50:08,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=193, Invalid=359, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:50:08,282 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 461 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:08,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 875 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:50:08,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30609 states. [2023-12-02 16:50:08,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30609 to 16011. [2023-12-02 16:50:08,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16011 states, 16010 states have (on average 3.9603997501561525) internal successors, (63406), 16010 states have internal predecessors, (63406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:08,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16011 states to 16011 states and 63406 transitions. [2023-12-02 16:50:08,932 INFO L78 Accepts]: Start accepts. Automaton has 16011 states and 63406 transitions. Word has length 58 [2023-12-02 16:50:08,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:08,932 INFO L495 AbstractCegarLoop]: Abstraction has 16011 states and 63406 transitions. [2023-12-02 16:50:08,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:08,933 INFO L276 IsEmpty]: Start isEmpty. Operand 16011 states and 63406 transitions. [2023-12-02 16:50:08,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:50:08,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:08,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:50:08,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 16:50:08,971 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:50:08,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:08,972 INFO L85 PathProgramCache]: Analyzing trace with hash -247165286, now seen corresponding path program 8 times [2023-12-02 16:50:08,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:08,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53646979] [2023-12-02 16:50:08,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:08,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:10,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:50:10,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:10,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53646979] [2023-12-02 16:50:10,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53646979] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:10,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:50:10,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:50:10,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379756369] [2023-12-02 16:50:10,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:10,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:50:10,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:10,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:50:10,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:50:10,896 INFO L87 Difference]: Start difference. First operand 16011 states and 63406 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:12,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:12,763 INFO L93 Difference]: Finished difference Result 30607 states and 116363 transitions. [2023-12-02 16:50:12,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:50:12,763 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:50:12,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:12,863 INFO L225 Difference]: With dead ends: 30607 [2023-12-02 16:50:12,863 INFO L226 Difference]: Without dead ends: 30021 [2023-12-02 16:50:12,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=194, Invalid=358, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:50:12,864 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 422 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:12,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 885 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1232 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:50:12,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30021 states. [2023-12-02 16:50:13,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30021 to 15651. [2023-12-02 16:50:13,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15651 states, 15650 states have (on average 3.9796805111821087) internal successors, (62282), 15650 states have internal predecessors, (62282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:13,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15651 states to 15651 states and 62282 transitions. [2023-12-02 16:50:13,481 INFO L78 Accepts]: Start accepts. Automaton has 15651 states and 62282 transitions. Word has length 58 [2023-12-02 16:50:13,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:13,481 INFO L495 AbstractCegarLoop]: Abstraction has 15651 states and 62282 transitions. [2023-12-02 16:50:13,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:13,481 INFO L276 IsEmpty]: Start isEmpty. Operand 15651 states and 62282 transitions. [2023-12-02 16:50:13,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:50:13,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:13,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:50:13,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-02 16:50:13,518 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:50:13,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:13,518 INFO L85 PathProgramCache]: Analyzing trace with hash 398263722, now seen corresponding path program 9 times [2023-12-02 16:50:13,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:13,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966602452] [2023-12-02 16:50:13,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:13,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:15,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:50:15,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:15,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966602452] [2023-12-02 16:50:15,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966602452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:15,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:50:15,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:50:15,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887262931] [2023-12-02 16:50:15,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:15,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:50:15,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:15,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:50:15,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:50:15,308 INFO L87 Difference]: Start difference. First operand 15651 states and 62282 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:17,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:17,472 INFO L93 Difference]: Finished difference Result 31078 states and 117882 transitions. [2023-12-02 16:50:17,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:50:17,472 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:50:17,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:17,579 INFO L225 Difference]: With dead ends: 31078 [2023-12-02 16:50:17,580 INFO L226 Difference]: Without dead ends: 30945 [2023-12-02 16:50:17,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:50:17,581 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 496 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:17,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 1007 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 16:50:17,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30945 states. [2023-12-02 16:50:18,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30945 to 15765. [2023-12-02 16:50:18,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15765 states, 15764 states have (on average 3.978368434407511) internal successors, (62715), 15764 states have internal predecessors, (62715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:18,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15765 states to 15765 states and 62715 transitions. [2023-12-02 16:50:18,231 INFO L78 Accepts]: Start accepts. Automaton has 15765 states and 62715 transitions. Word has length 58 [2023-12-02 16:50:18,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:18,231 INFO L495 AbstractCegarLoop]: Abstraction has 15765 states and 62715 transitions. [2023-12-02 16:50:18,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:18,231 INFO L276 IsEmpty]: Start isEmpty. Operand 15765 states and 62715 transitions. [2023-12-02 16:50:18,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:50:18,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:18,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:50:18,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 16:50:18,272 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:50:18,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:18,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1826340982, now seen corresponding path program 10 times [2023-12-02 16:50:18,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:18,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435474173] [2023-12-02 16:50:18,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:18,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:20,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:50:20,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:20,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435474173] [2023-12-02 16:50:20,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435474173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:20,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:50:20,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:50:20,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923385874] [2023-12-02 16:50:20,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:20,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:50:20,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:20,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:50:20,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:50:20,186 INFO L87 Difference]: Start difference. First operand 15765 states and 62715 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:21,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:21,768 INFO L93 Difference]: Finished difference Result 30943 states and 117519 transitions. [2023-12-02 16:50:21,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:50:21,768 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:50:21,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:21,858 INFO L225 Difference]: With dead ends: 30943 [2023-12-02 16:50:21,859 INFO L226 Difference]: Without dead ends: 30816 [2023-12-02 16:50:21,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:50:21,860 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 498 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:21,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 956 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:50:21,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30816 states. [2023-12-02 16:50:22,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30816 to 15753. [2023-12-02 16:50:22,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15753 states, 15752 states have (on average 3.9786058913153886) internal successors, (62671), 15752 states have internal predecessors, (62671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:22,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15753 states to 15753 states and 62671 transitions. [2023-12-02 16:50:22,355 INFO L78 Accepts]: Start accepts. Automaton has 15753 states and 62671 transitions. Word has length 58 [2023-12-02 16:50:22,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:22,355 INFO L495 AbstractCegarLoop]: Abstraction has 15753 states and 62671 transitions. [2023-12-02 16:50:22,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:22,355 INFO L276 IsEmpty]: Start isEmpty. Operand 15753 states and 62671 transitions. [2023-12-02 16:50:22,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:50:22,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:22,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:50:22,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-02 16:50:22,386 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:50:22,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:22,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1789590612, now seen corresponding path program 11 times [2023-12-02 16:50:22,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:22,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785342510] [2023-12-02 16:50:22,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:22,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:50:23,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:23,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785342510] [2023-12-02 16:50:23,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785342510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:23,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:50:23,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:50:23,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988976787] [2023-12-02 16:50:23,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:23,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:50:23,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:23,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:50:23,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:50:23,659 INFO L87 Difference]: Start difference. First operand 15753 states and 62671 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:25,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:25,570 INFO L93 Difference]: Finished difference Result 31075 states and 117907 transitions. [2023-12-02 16:50:25,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:50:25,571 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:50:25,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:25,649 INFO L225 Difference]: With dead ends: 31075 [2023-12-02 16:50:25,649 INFO L226 Difference]: Without dead ends: 30780 [2023-12-02 16:50:25,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:50:25,650 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 460 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1446 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:25,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 981 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1446 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:50:25,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30780 states. [2023-12-02 16:50:26,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30780 to 15717. [2023-12-02 16:50:26,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15717 states, 15716 states have (on average 3.978938661236956) internal successors, (62533), 15716 states have internal predecessors, (62533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:26,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15717 states to 15717 states and 62533 transitions. [2023-12-02 16:50:26,119 INFO L78 Accepts]: Start accepts. Automaton has 15717 states and 62533 transitions. Word has length 58 [2023-12-02 16:50:26,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:26,119 INFO L495 AbstractCegarLoop]: Abstraction has 15717 states and 62533 transitions. [2023-12-02 16:50:26,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:26,120 INFO L276 IsEmpty]: Start isEmpty. Operand 15717 states and 62533 transitions. [2023-12-02 16:50:26,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:50:26,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:26,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:50:26,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-02 16:50:26,146 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:50:26,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:26,147 INFO L85 PathProgramCache]: Analyzing trace with hash -686271062, now seen corresponding path program 12 times [2023-12-02 16:50:26,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:26,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709363169] [2023-12-02 16:50:26,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:26,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:27,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:50:27,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:27,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709363169] [2023-12-02 16:50:27,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709363169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:27,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:50:27,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:50:27,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023758900] [2023-12-02 16:50:27,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:27,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:50:27,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:27,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:50:27,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:50:27,502 INFO L87 Difference]: Start difference. First operand 15717 states and 62533 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:29,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:29,070 INFO L93 Difference]: Finished difference Result 31261 states and 118359 transitions. [2023-12-02 16:50:29,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:50:29,070 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:50:29,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:29,150 INFO L225 Difference]: With dead ends: 31261 [2023-12-02 16:50:29,151 INFO L226 Difference]: Without dead ends: 31128 [2023-12-02 16:50:29,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:50:29,151 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 475 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:29,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 1050 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:50:29,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31128 states. [2023-12-02 16:50:29,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31128 to 15735. [2023-12-02 16:50:29,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15735 states, 15734 states have (on average 3.9780094063810854) internal successors, (62590), 15734 states have internal predecessors, (62590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:29,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15735 states to 15735 states and 62590 transitions. [2023-12-02 16:50:29,624 INFO L78 Accepts]: Start accepts. Automaton has 15735 states and 62590 transitions. Word has length 58 [2023-12-02 16:50:29,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:29,624 INFO L495 AbstractCegarLoop]: Abstraction has 15735 states and 62590 transitions. [2023-12-02 16:50:29,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:29,624 INFO L276 IsEmpty]: Start isEmpty. Operand 15735 states and 62590 transitions. [2023-12-02 16:50:29,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:50:29,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:29,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:50:29,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-02 16:50:29,651 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:50:29,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:29,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1384091530, now seen corresponding path program 13 times [2023-12-02 16:50:29,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:29,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855244831] [2023-12-02 16:50:29,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:29,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:30,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:50:30,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:30,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855244831] [2023-12-02 16:50:30,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855244831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:30,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:50:30,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:50:30,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836870111] [2023-12-02 16:50:30,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:30,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:50:30,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:30,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:50:30,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:50:30,943 INFO L87 Difference]: Start difference. First operand 15735 states and 62590 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:32,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:32,871 INFO L93 Difference]: Finished difference Result 31243 states and 118296 transitions. [2023-12-02 16:50:32,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:50:32,871 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:50:32,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:32,952 INFO L225 Difference]: With dead ends: 31243 [2023-12-02 16:50:32,952 INFO L226 Difference]: Without dead ends: 31116 [2023-12-02 16:50:32,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:50:32,953 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 496 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:32,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 1022 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:50:33,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31116 states. [2023-12-02 16:50:33,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31116 to 15723. [2023-12-02 16:50:33,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15723 states, 15722 states have (on average 3.9786286731967944) internal successors, (62552), 15722 states have internal predecessors, (62552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:33,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15723 states to 15723 states and 62552 transitions. [2023-12-02 16:50:33,414 INFO L78 Accepts]: Start accepts. Automaton has 15723 states and 62552 transitions. Word has length 58 [2023-12-02 16:50:33,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:33,414 INFO L495 AbstractCegarLoop]: Abstraction has 15723 states and 62552 transitions. [2023-12-02 16:50:33,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:33,415 INFO L276 IsEmpty]: Start isEmpty. Operand 15723 states and 62552 transitions. [2023-12-02 16:50:33,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:50:33,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:33,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:50:33,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-02 16:50:33,441 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:50:33,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:33,442 INFO L85 PathProgramCache]: Analyzing trace with hash 536866696, now seen corresponding path program 14 times [2023-12-02 16:50:33,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:33,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4518571] [2023-12-02 16:50:33,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:33,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:34,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:50:34,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:34,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4518571] [2023-12-02 16:50:34,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4518571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:34,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:50:34,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:50:34,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168210969] [2023-12-02 16:50:34,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:34,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:50:34,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:34,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:50:34,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:50:34,694 INFO L87 Difference]: Start difference. First operand 15723 states and 62552 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:36,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:36,446 INFO L93 Difference]: Finished difference Result 31273 states and 118389 transitions. [2023-12-02 16:50:36,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:50:36,447 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:50:36,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:36,528 INFO L225 Difference]: With dead ends: 31273 [2023-12-02 16:50:36,528 INFO L226 Difference]: Without dead ends: 31140 [2023-12-02 16:50:36,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:50:36,529 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 476 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:36,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 1036 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:50:36,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31140 states. [2023-12-02 16:50:36,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31140 to 15744. [2023-12-02 16:50:36,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15744 states, 15743 states have (on average 3.9766880518325607) internal successors, (62605), 15743 states have internal predecessors, (62605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:37,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15744 states to 15744 states and 62605 transitions. [2023-12-02 16:50:37,002 INFO L78 Accepts]: Start accepts. Automaton has 15744 states and 62605 transitions. Word has length 58 [2023-12-02 16:50:37,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:37,003 INFO L495 AbstractCegarLoop]: Abstraction has 15744 states and 62605 transitions. [2023-12-02 16:50:37,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:37,003 INFO L276 IsEmpty]: Start isEmpty. Operand 15744 states and 62605 transitions. [2023-12-02 16:50:37,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:50:37,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:37,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:50:37,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-02 16:50:37,031 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:50:37,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:37,032 INFO L85 PathProgramCache]: Analyzing trace with hash -506077718, now seen corresponding path program 15 times [2023-12-02 16:50:37,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:37,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787222219] [2023-12-02 16:50:37,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:37,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:38,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:50:38,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:38,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787222219] [2023-12-02 16:50:38,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787222219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:38,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:50:38,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:50:38,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725762317] [2023-12-02 16:50:38,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:38,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:50:38,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:38,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:50:38,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:50:38,223 INFO L87 Difference]: Start difference. First operand 15744 states and 62605 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:40,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:40,064 INFO L93 Difference]: Finished difference Result 31183 states and 118150 transitions. [2023-12-02 16:50:40,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:50:40,064 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:50:40,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:40,149 INFO L225 Difference]: With dead ends: 31183 [2023-12-02 16:50:40,149 INFO L226 Difference]: Without dead ends: 31026 [2023-12-02 16:50:40,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:50:40,150 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 463 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:40,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 931 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:50:40,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31026 states. [2023-12-02 16:50:40,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31026 to 15723. [2023-12-02 16:50:40,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15723 states, 15722 states have (on average 3.978247042361023) internal successors, (62546), 15722 states have internal predecessors, (62546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:40,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15723 states to 15723 states and 62546 transitions. [2023-12-02 16:50:40,627 INFO L78 Accepts]: Start accepts. Automaton has 15723 states and 62546 transitions. Word has length 58 [2023-12-02 16:50:40,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:40,627 INFO L495 AbstractCegarLoop]: Abstraction has 15723 states and 62546 transitions. [2023-12-02 16:50:40,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:40,627 INFO L276 IsEmpty]: Start isEmpty. Operand 15723 states and 62546 transitions. [2023-12-02 16:50:40,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:50:40,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:40,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:50:40,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-02 16:50:40,655 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:50:40,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:40,655 INFO L85 PathProgramCache]: Analyzing trace with hash -882414232, now seen corresponding path program 16 times [2023-12-02 16:50:40,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:40,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715672663] [2023-12-02 16:50:40,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:40,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:41,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:50:41,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:41,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715672663] [2023-12-02 16:50:41,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715672663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:41,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:50:41,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:50:41,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131602110] [2023-12-02 16:50:41,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:41,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:50:41,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:41,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:50:41,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:50:41,872 INFO L87 Difference]: Start difference. First operand 15723 states and 62546 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:43,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:43,957 INFO L93 Difference]: Finished difference Result 31072 states and 117825 transitions. [2023-12-02 16:50:43,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:50:43,957 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:50:43,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:44,135 INFO L225 Difference]: With dead ends: 31072 [2023-12-02 16:50:44,135 INFO L226 Difference]: Without dead ends: 30957 [2023-12-02 16:50:44,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:50:44,136 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 418 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:44,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1063 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 16:50:44,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30957 states. [2023-12-02 16:50:44,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30957 to 15735. [2023-12-02 16:50:44,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15735 states, 15734 states have (on average 3.977246726833609) internal successors, (62578), 15734 states have internal predecessors, (62578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:44,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15735 states to 15735 states and 62578 transitions. [2023-12-02 16:50:44,576 INFO L78 Accepts]: Start accepts. Automaton has 15735 states and 62578 transitions. Word has length 58 [2023-12-02 16:50:44,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:44,577 INFO L495 AbstractCegarLoop]: Abstraction has 15735 states and 62578 transitions. [2023-12-02 16:50:44,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:44,577 INFO L276 IsEmpty]: Start isEmpty. Operand 15735 states and 62578 transitions. [2023-12-02 16:50:44,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:50:44,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:44,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:50:44,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-02 16:50:44,603 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:50:44,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:44,604 INFO L85 PathProgramCache]: Analyzing trace with hash 542515146, now seen corresponding path program 17 times [2023-12-02 16:50:44,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:44,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104093112] [2023-12-02 16:50:44,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:44,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:50:45,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:45,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104093112] [2023-12-02 16:50:45,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104093112] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:45,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:50:45,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:50:45,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181859530] [2023-12-02 16:50:45,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:45,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:50:45,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:45,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:50:45,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:50:45,867 INFO L87 Difference]: Start difference. First operand 15735 states and 62578 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:47,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:47,558 INFO L93 Difference]: Finished difference Result 31000 states and 117646 transitions. [2023-12-02 16:50:47,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:50:47,559 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:50:47,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:47,643 INFO L225 Difference]: With dead ends: 31000 [2023-12-02 16:50:47,643 INFO L226 Difference]: Without dead ends: 30846 [2023-12-02 16:50:47,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:50:47,643 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 450 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:47,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 877 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:50:47,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30846 states. [2023-12-02 16:50:48,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30846 to 15717. [2023-12-02 16:50:48,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15717 states, 15716 states have (on average 3.9785568847034867) internal successors, (62527), 15716 states have internal predecessors, (62527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:48,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15717 states to 15717 states and 62527 transitions. [2023-12-02 16:50:48,192 INFO L78 Accepts]: Start accepts. Automaton has 15717 states and 62527 transitions. Word has length 58 [2023-12-02 16:50:48,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:48,193 INFO L495 AbstractCegarLoop]: Abstraction has 15717 states and 62527 transitions. [2023-12-02 16:50:48,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:48,193 INFO L276 IsEmpty]: Start isEmpty. Operand 15717 states and 62527 transitions. [2023-12-02 16:50:48,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:50:48,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:48,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:50:48,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-02 16:50:48,227 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:50:48,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:48,228 INFO L85 PathProgramCache]: Analyzing trace with hash 27827052, now seen corresponding path program 18 times [2023-12-02 16:50:48,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:48,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386315542] [2023-12-02 16:50:48,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:48,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:49,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:50:49,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:49,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386315542] [2023-12-02 16:50:49,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386315542] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:49,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:50:49,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:50:49,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195870832] [2023-12-02 16:50:49,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:49,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:50:49,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:49,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:50:49,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:50:49,509 INFO L87 Difference]: Start difference. First operand 15717 states and 62527 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:51,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:51,481 INFO L93 Difference]: Finished difference Result 31303 states and 118543 transitions. [2023-12-02 16:50:51,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:50:51,482 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:50:51,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:51,566 INFO L225 Difference]: With dead ends: 31303 [2023-12-02 16:50:51,566 INFO L226 Difference]: Without dead ends: 31044 [2023-12-02 16:50:51,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:50:51,567 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 452 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:51,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 1026 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:50:51,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31044 states. [2023-12-02 16:50:51,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31044 to 15780. [2023-12-02 16:50:52,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15780 states, 15779 states have (on average 3.9727485898979658) internal successors, (62686), 15779 states have internal predecessors, (62686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:52,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15780 states to 15780 states and 62686 transitions. [2023-12-02 16:50:52,075 INFO L78 Accepts]: Start accepts. Automaton has 15780 states and 62686 transitions. Word has length 58 [2023-12-02 16:50:52,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:52,076 INFO L495 AbstractCegarLoop]: Abstraction has 15780 states and 62686 transitions. [2023-12-02 16:50:52,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:52,076 INFO L276 IsEmpty]: Start isEmpty. Operand 15780 states and 62686 transitions. [2023-12-02 16:50:52,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:50:52,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:52,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:50:52,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-02 16:50:52,105 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:50:52,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:52,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1752140534, now seen corresponding path program 19 times [2023-12-02 16:50:52,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:52,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129218270] [2023-12-02 16:50:52,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:52,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:50:53,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:53,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129218270] [2023-12-02 16:50:53,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129218270] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:53,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:50:53,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:50:53,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819591776] [2023-12-02 16:50:53,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:53,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:50:53,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:53,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:50:53,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:50:53,460 INFO L87 Difference]: Start difference. First operand 15780 states and 62686 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:55,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:55,184 INFO L93 Difference]: Finished difference Result 31201 states and 118179 transitions. [2023-12-02 16:50:55,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:50:55,184 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:50:55,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:55,266 INFO L225 Difference]: With dead ends: 31201 [2023-12-02 16:50:55,266 INFO L226 Difference]: Without dead ends: 31068 [2023-12-02 16:50:55,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:50:55,267 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 473 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:55,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 986 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:50:55,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31068 states. [2023-12-02 16:50:55,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31068 to 15801. [2023-12-02 16:50:55,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15801 states, 15800 states have (on average 3.9708227848101267) internal successors, (62739), 15800 states have internal predecessors, (62739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:55,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15801 states to 15801 states and 62739 transitions. [2023-12-02 16:50:55,732 INFO L78 Accepts]: Start accepts. Automaton has 15801 states and 62739 transitions. Word has length 58 [2023-12-02 16:50:55,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:55,732 INFO L495 AbstractCegarLoop]: Abstraction has 15801 states and 62739 transitions. [2023-12-02 16:50:55,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:55,732 INFO L276 IsEmpty]: Start isEmpty. Operand 15801 states and 62739 transitions. [2023-12-02 16:50:55,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:50:55,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:55,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:50:55,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-02 16:50:55,758 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:50:55,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:55,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1499882348, now seen corresponding path program 20 times [2023-12-02 16:50:55,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:55,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095761090] [2023-12-02 16:50:55,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:55,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:56,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:50:56,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:56,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095761090] [2023-12-02 16:50:56,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095761090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:56,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:50:56,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:50:56,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463807214] [2023-12-02 16:50:56,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:56,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:50:56,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:56,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:50:56,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:50:56,996 INFO L87 Difference]: Start difference. First operand 15801 states and 62739 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:58,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:58,575 INFO L93 Difference]: Finished difference Result 31066 states and 117807 transitions. [2023-12-02 16:50:58,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:50:58,576 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:50:58,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:58,752 INFO L225 Difference]: With dead ends: 31066 [2023-12-02 16:50:58,752 INFO L226 Difference]: Without dead ends: 30828 [2023-12-02 16:50:58,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:50:58,753 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 458 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:58,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 928 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:50:58,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30828 states. [2023-12-02 16:50:59,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30828 to 15699. [2023-12-02 16:50:59,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15699 states, 15698 states have (on average 3.978723404255319) internal successors, (62458), 15698 states have internal predecessors, (62458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:59,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15699 states to 15699 states and 62458 transitions. [2023-12-02 16:50:59,195 INFO L78 Accepts]: Start accepts. Automaton has 15699 states and 62458 transitions. Word has length 58 [2023-12-02 16:50:59,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:59,196 INFO L495 AbstractCegarLoop]: Abstraction has 15699 states and 62458 transitions. [2023-12-02 16:50:59,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:50:59,196 INFO L276 IsEmpty]: Start isEmpty. Operand 15699 states and 62458 transitions. [2023-12-02 16:50:59,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:50:59,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:59,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:50:59,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-02 16:50:59,223 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:50:59,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:59,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1163093880, now seen corresponding path program 21 times [2023-12-02 16:50:59,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:59,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523278081] [2023-12-02 16:50:59,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:59,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:00,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:51:00,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:00,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523278081] [2023-12-02 16:51:00,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523278081] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:00,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:51:00,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:51:00,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557029391] [2023-12-02 16:51:00,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:00,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:51:00,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:00,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:51:00,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:51:00,448 INFO L87 Difference]: Start difference. First operand 15699 states and 62458 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:02,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:02,324 INFO L93 Difference]: Finished difference Result 31510 states and 119163 transitions. [2023-12-02 16:51:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 16:51:02,324 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:51:02,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:02,408 INFO L225 Difference]: With dead ends: 31510 [2023-12-02 16:51:02,408 INFO L226 Difference]: Without dead ends: 31377 [2023-12-02 16:51:02,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=218, Invalid=432, Unknown=0, NotChecked=0, Total=650 [2023-12-02 16:51:02,409 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 489 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:02,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 992 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:51:02,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31377 states. [2023-12-02 16:51:02,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31377 to 15729. [2023-12-02 16:51:02,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15729 states, 15728 states have (on average 3.977937436419125) internal successors, (62565), 15728 states have internal predecessors, (62565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:02,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15729 states to 15729 states and 62565 transitions. [2023-12-02 16:51:02,903 INFO L78 Accepts]: Start accepts. Automaton has 15729 states and 62565 transitions. Word has length 58 [2023-12-02 16:51:02,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:02,904 INFO L495 AbstractCegarLoop]: Abstraction has 15729 states and 62565 transitions. [2023-12-02 16:51:02,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:02,904 INFO L276 IsEmpty]: Start isEmpty. Operand 15729 states and 62565 transitions. [2023-12-02 16:51:02,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:51:02,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:02,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:51:02,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-02 16:51:02,931 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:51:02,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:02,931 INFO L85 PathProgramCache]: Analyzing trace with hash 907268712, now seen corresponding path program 22 times [2023-12-02 16:51:02,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:02,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882065333] [2023-12-02 16:51:02,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:02,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:51:04,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:04,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882065333] [2023-12-02 16:51:04,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882065333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:04,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:51:04,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:51:04,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255746388] [2023-12-02 16:51:04,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:04,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:51:04,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:04,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:51:04,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:51:04,330 INFO L87 Difference]: Start difference. First operand 15729 states and 62565 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:05,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:05,982 INFO L93 Difference]: Finished difference Result 31366 states and 118719 transitions. [2023-12-02 16:51:05,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:51:05,982 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:51:05,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:06,084 INFO L225 Difference]: With dead ends: 31366 [2023-12-02 16:51:06,084 INFO L226 Difference]: Without dead ends: 31239 [2023-12-02 16:51:06,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2023-12-02 16:51:06,085 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 538 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:06,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 995 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:51:06,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31239 states. [2023-12-02 16:51:06,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31239 to 15717. [2023-12-02 16:51:06,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15717 states, 15716 states have (on average 3.9785568847034867) internal successors, (62527), 15716 states have internal predecessors, (62527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:06,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15717 states to 15717 states and 62527 transitions. [2023-12-02 16:51:06,560 INFO L78 Accepts]: Start accepts. Automaton has 15717 states and 62527 transitions. Word has length 58 [2023-12-02 16:51:06,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:06,560 INFO L495 AbstractCegarLoop]: Abstraction has 15717 states and 62527 transitions. [2023-12-02 16:51:06,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:06,560 INFO L276 IsEmpty]: Start isEmpty. Operand 15717 states and 62527 transitions. [2023-12-02 16:51:06,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:51:06,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:06,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:51:06,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-02 16:51:06,586 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:51:06,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:06,586 INFO L85 PathProgramCache]: Analyzing trace with hash 60043878, now seen corresponding path program 23 times [2023-12-02 16:51:06,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:06,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338821448] [2023-12-02 16:51:06,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:06,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:07,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:51:07,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:07,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338821448] [2023-12-02 16:51:07,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338821448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:07,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:51:07,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:51:07,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871105447] [2023-12-02 16:51:07,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:07,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:51:07,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:07,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:51:07,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:51:07,927 INFO L87 Difference]: Start difference. First operand 15717 states and 62527 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:09,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:09,486 INFO L93 Difference]: Finished difference Result 31531 states and 119163 transitions. [2023-12-02 16:51:09,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:51:09,487 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:51:09,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:09,576 INFO L225 Difference]: With dead ends: 31531 [2023-12-02 16:51:09,576 INFO L226 Difference]: Without dead ends: 31398 [2023-12-02 16:51:09,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:51:09,577 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 488 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:09,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 954 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:51:09,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31398 states. [2023-12-02 16:51:09,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31398 to 15738. [2023-12-02 16:51:10,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15738 states, 15737 states have (on average 3.9766156192412785) internal successors, (62580), 15737 states have internal predecessors, (62580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:10,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15738 states to 15738 states and 62580 transitions. [2023-12-02 16:51:10,058 INFO L78 Accepts]: Start accepts. Automaton has 15738 states and 62580 transitions. Word has length 58 [2023-12-02 16:51:10,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:10,058 INFO L495 AbstractCegarLoop]: Abstraction has 15738 states and 62580 transitions. [2023-12-02 16:51:10,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:10,058 INFO L276 IsEmpty]: Start isEmpty. Operand 15738 states and 62580 transitions. [2023-12-02 16:51:10,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:51:10,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:10,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:51:10,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-02 16:51:10,086 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:51:10,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:10,086 INFO L85 PathProgramCache]: Analyzing trace with hash -982900536, now seen corresponding path program 24 times [2023-12-02 16:51:10,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:10,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11787417] [2023-12-02 16:51:10,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:10,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:11,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:51:11,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:11,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11787417] [2023-12-02 16:51:11,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11787417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:11,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:51:11,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:51:11,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356034653] [2023-12-02 16:51:11,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:11,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:51:11,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:11,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:51:11,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:51:11,350 INFO L87 Difference]: Start difference. First operand 15738 states and 62580 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:13,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:13,041 INFO L93 Difference]: Finished difference Result 31441 states and 118924 transitions. [2023-12-02 16:51:13,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:51:13,042 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:51:13,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:13,135 INFO L225 Difference]: With dead ends: 31441 [2023-12-02 16:51:13,135 INFO L226 Difference]: Without dead ends: 31284 [2023-12-02 16:51:13,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:51:13,136 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 497 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:13,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 883 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:51:13,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31284 states. [2023-12-02 16:51:13,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31284 to 15717. [2023-12-02 16:51:13,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15717 states, 15716 states have (on average 3.9781751081700176) internal successors, (62521), 15716 states have internal predecessors, (62521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:13,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15717 states to 15717 states and 62521 transitions. [2023-12-02 16:51:13,654 INFO L78 Accepts]: Start accepts. Automaton has 15717 states and 62521 transitions. Word has length 58 [2023-12-02 16:51:13,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:13,654 INFO L495 AbstractCegarLoop]: Abstraction has 15717 states and 62521 transitions. [2023-12-02 16:51:13,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:13,654 INFO L276 IsEmpty]: Start isEmpty. Operand 15717 states and 62521 transitions. [2023-12-02 16:51:13,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:51:13,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:13,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:51:13,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-02 16:51:13,683 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:51:13,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:13,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1359237050, now seen corresponding path program 25 times [2023-12-02 16:51:13,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:13,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056878446] [2023-12-02 16:51:13,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:13,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:51:14,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:14,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056878446] [2023-12-02 16:51:14,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056878446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:14,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:51:14,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:51:14,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440635196] [2023-12-02 16:51:14,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:14,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:51:14,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:14,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:51:14,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:51:14,930 INFO L87 Difference]: Start difference. First operand 15717 states and 62521 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:16,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:16,658 INFO L93 Difference]: Finished difference Result 31504 states and 119076 transitions. [2023-12-02 16:51:16,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:51:16,658 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:51:16,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:16,735 INFO L225 Difference]: With dead ends: 31504 [2023-12-02 16:51:16,735 INFO L226 Difference]: Without dead ends: 31389 [2023-12-02 16:51:16,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:51:16,736 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 481 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 1535 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:16,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 1052 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1535 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:51:16,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31389 states. [2023-12-02 16:51:17,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31389 to 15729. [2023-12-02 16:51:17,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15729 states, 15728 states have (on average 3.977174465920651) internal successors, (62553), 15728 states have internal predecessors, (62553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:17,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15729 states to 15729 states and 62553 transitions. [2023-12-02 16:51:17,159 INFO L78 Accepts]: Start accepts. Automaton has 15729 states and 62553 transitions. Word has length 58 [2023-12-02 16:51:17,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:17,160 INFO L495 AbstractCegarLoop]: Abstraction has 15729 states and 62553 transitions. [2023-12-02 16:51:17,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:17,160 INFO L276 IsEmpty]: Start isEmpty. Operand 15729 states and 62553 transitions. [2023-12-02 16:51:17,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:51:17,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:17,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:51:17,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-02 16:51:17,184 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:51:17,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:17,184 INFO L85 PathProgramCache]: Analyzing trace with hash 65692328, now seen corresponding path program 26 times [2023-12-02 16:51:17,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:17,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249597109] [2023-12-02 16:51:17,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:17,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:18,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:51:18,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:18,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249597109] [2023-12-02 16:51:18,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249597109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:18,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:51:18,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:51:18,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321766592] [2023-12-02 16:51:18,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:18,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:51:18,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:18,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:51:18,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:51:18,397 INFO L87 Difference]: Start difference. First operand 15729 states and 62553 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:20,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:20,141 INFO L93 Difference]: Finished difference Result 31432 states and 118897 transitions. [2023-12-02 16:51:20,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:51:20,141 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:51:20,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:20,233 INFO L225 Difference]: With dead ends: 31432 [2023-12-02 16:51:20,233 INFO L226 Difference]: Without dead ends: 31278 [2023-12-02 16:51:20,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:51:20,234 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 467 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:20,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 972 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:51:20,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31278 states. [2023-12-02 16:51:20,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31278 to 15711. [2023-12-02 16:51:20,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15711 states, 15710 states have (on average 3.9784850413749204) internal successors, (62502), 15710 states have internal predecessors, (62502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:20,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15711 states to 15711 states and 62502 transitions. [2023-12-02 16:51:20,786 INFO L78 Accepts]: Start accepts. Automaton has 15711 states and 62502 transitions. Word has length 58 [2023-12-02 16:51:20,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:20,786 INFO L495 AbstractCegarLoop]: Abstraction has 15711 states and 62502 transitions. [2023-12-02 16:51:20,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:20,786 INFO L276 IsEmpty]: Start isEmpty. Operand 15711 states and 62502 transitions. [2023-12-02 16:51:20,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:51:20,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:20,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:51:20,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-02 16:51:20,811 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:51:20,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:20,813 INFO L85 PathProgramCache]: Analyzing trace with hash 845200088, now seen corresponding path program 27 times [2023-12-02 16:51:20,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:20,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600263362] [2023-12-02 16:51:20,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:20,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:22,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:51:22,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:22,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600263362] [2023-12-02 16:51:22,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600263362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:22,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:51:22,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:51:22,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293896929] [2023-12-02 16:51:22,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:22,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:51:22,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:22,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:51:22,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:51:22,080 INFO L87 Difference]: Start difference. First operand 15711 states and 62502 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:23,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:23,923 INFO L93 Difference]: Finished difference Result 31795 states and 120016 transitions. [2023-12-02 16:51:23,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 16:51:23,923 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:51:23,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:24,009 INFO L225 Difference]: With dead ends: 31795 [2023-12-02 16:51:24,009 INFO L226 Difference]: Without dead ends: 31662 [2023-12-02 16:51:24,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=428, Unknown=0, NotChecked=0, Total=650 [2023-12-02 16:51:24,010 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 486 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 1405 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:24,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 966 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1405 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:51:24,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31662 states. [2023-12-02 16:51:24,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31662 to 15774. [2023-12-02 16:51:24,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15774 states, 15773 states have (on average 3.9753376022316615) internal successors, (62703), 15773 states have internal predecessors, (62703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:24,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15774 states to 15774 states and 62703 transitions. [2023-12-02 16:51:24,485 INFO L78 Accepts]: Start accepts. Automaton has 15774 states and 62703 transitions. Word has length 58 [2023-12-02 16:51:24,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:24,485 INFO L495 AbstractCegarLoop]: Abstraction has 15774 states and 62703 transitions. [2023-12-02 16:51:24,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:24,485 INFO L276 IsEmpty]: Start isEmpty. Operand 15774 states and 62703 transitions. [2023-12-02 16:51:24,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:51:24,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:24,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:51:24,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-02 16:51:24,514 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:51:24,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:24,514 INFO L85 PathProgramCache]: Analyzing trace with hash -197744326, now seen corresponding path program 28 times [2023-12-02 16:51:24,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:24,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330784789] [2023-12-02 16:51:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:24,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:25,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:51:25,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:25,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330784789] [2023-12-02 16:51:25,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330784789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:25,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:51:25,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:51:25,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848598532] [2023-12-02 16:51:25,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:25,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:51:25,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:25,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:51:25,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:51:25,670 INFO L87 Difference]: Start difference. First operand 15774 states and 62703 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:27,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:27,303 INFO L93 Difference]: Finished difference Result 31672 states and 119620 transitions. [2023-12-02 16:51:27,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:51:27,303 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:51:27,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:27,388 INFO L225 Difference]: With dead ends: 31672 [2023-12-02 16:51:27,388 INFO L226 Difference]: Without dead ends: 31515 [2023-12-02 16:51:27,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=205, Invalid=395, Unknown=0, NotChecked=0, Total=600 [2023-12-02 16:51:27,389 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 508 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:27,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 922 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:51:27,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31515 states. [2023-12-02 16:51:27,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31515 to 15753. [2023-12-02 16:51:27,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15753 states, 15752 states have (on average 3.975939563230066) internal successors, (62629), 15752 states have internal predecessors, (62629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:27,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15753 states to 15753 states and 62629 transitions. [2023-12-02 16:51:27,855 INFO L78 Accepts]: Start accepts. Automaton has 15753 states and 62629 transitions. Word has length 58 [2023-12-02 16:51:27,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:27,856 INFO L495 AbstractCegarLoop]: Abstraction has 15753 states and 62629 transitions. [2023-12-02 16:51:27,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:27,856 INFO L276 IsEmpty]: Start isEmpty. Operand 15753 states and 62629 transitions. [2023-12-02 16:51:27,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:51:27,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:27,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:51:27,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-02 16:51:27,881 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:51:27,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:27,881 INFO L85 PathProgramCache]: Analyzing trace with hash -924939160, now seen corresponding path program 29 times [2023-12-02 16:51:27,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:27,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058658292] [2023-12-02 16:51:27,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:27,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:29,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:51:29,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:29,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058658292] [2023-12-02 16:51:29,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058658292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:29,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:51:29,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:51:29,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876766462] [2023-12-02 16:51:29,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:29,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:51:29,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:29,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:51:29,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:51:29,208 INFO L87 Difference]: Start difference. First operand 15753 states and 62629 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:31,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:31,002 INFO L93 Difference]: Finished difference Result 31603 states and 119455 transitions. [2023-12-02 16:51:31,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:51:31,002 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:51:31,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:31,087 INFO L225 Difference]: With dead ends: 31603 [2023-12-02 16:51:31,087 INFO L226 Difference]: Without dead ends: 31335 [2023-12-02 16:51:31,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=207, Invalid=393, Unknown=0, NotChecked=0, Total=600 [2023-12-02 16:51:31,088 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 482 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:31,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 907 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:51:31,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31335 states. [2023-12-02 16:51:31,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31335 to 15711. [2023-12-02 16:51:31,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15711 states, 15710 states have (on average 3.9777211966900063) internal successors, (62490), 15710 states have internal predecessors, (62490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:31,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15711 states to 15711 states and 62490 transitions. [2023-12-02 16:51:31,521 INFO L78 Accepts]: Start accepts. Automaton has 15711 states and 62490 transitions. Word has length 58 [2023-12-02 16:51:31,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:31,521 INFO L495 AbstractCegarLoop]: Abstraction has 15711 states and 62490 transitions. [2023-12-02 16:51:31,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:31,521 INFO L276 IsEmpty]: Start isEmpty. Operand 15711 states and 62490 transitions. [2023-12-02 16:51:31,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:51:31,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:31,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:51:31,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-02 16:51:31,546 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:51:31,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:31,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1867526872, now seen corresponding path program 30 times [2023-12-02 16:51:31,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:31,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868315846] [2023-12-02 16:51:31,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:31,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:32,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:51:32,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:32,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868315846] [2023-12-02 16:51:32,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868315846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:32,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:51:32,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:51:32,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100138161] [2023-12-02 16:51:32,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:32,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:51:32,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:32,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:51:32,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:51:32,840 INFO L87 Difference]: Start difference. First operand 15711 states and 62490 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:34,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:34,425 INFO L93 Difference]: Finished difference Result 31168 states and 118143 transitions. [2023-12-02 16:51:34,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:51:34,426 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:51:34,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:34,505 INFO L225 Difference]: With dead ends: 31168 [2023-12-02 16:51:34,505 INFO L226 Difference]: Without dead ends: 31053 [2023-12-02 16:51:34,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:51:34,506 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 448 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:34,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 1057 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:51:34,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31053 states. [2023-12-02 16:51:34,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31053 to 15747. [2023-12-02 16:51:34,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15747 states, 15746 states have (on average 3.976247935983742) internal successors, (62610), 15746 states have internal predecessors, (62610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15747 states to 15747 states and 62610 transitions. [2023-12-02 16:51:34,958 INFO L78 Accepts]: Start accepts. Automaton has 15747 states and 62610 transitions. Word has length 58 [2023-12-02 16:51:34,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:34,958 INFO L495 AbstractCegarLoop]: Abstraction has 15747 states and 62610 transitions. [2023-12-02 16:51:34,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:34,958 INFO L276 IsEmpty]: Start isEmpty. Operand 15747 states and 62610 transitions. [2023-12-02 16:51:34,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:51:34,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:34,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:51:34,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-02 16:51:34,984 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:51:34,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:34,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1002511046, now seen corresponding path program 31 times [2023-12-02 16:51:34,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:34,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980917122] [2023-12-02 16:51:34,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:34,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:36,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:51:36,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:36,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980917122] [2023-12-02 16:51:36,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980917122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:36,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:51:36,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:51:36,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641290037] [2023-12-02 16:51:36,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:36,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:51:36,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:36,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:51:36,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:51:36,191 INFO L87 Difference]: Start difference. First operand 15747 states and 62610 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:37,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:37,765 INFO L93 Difference]: Finished difference Result 31189 states and 118188 transitions. [2023-12-02 16:51:37,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:51:37,765 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:51:37,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:37,843 INFO L225 Difference]: With dead ends: 31189 [2023-12-02 16:51:37,843 INFO L226 Difference]: Without dead ends: 31041 [2023-12-02 16:51:37,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:51:37,844 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 442 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:37,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 1025 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:51:37,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31041 states. [2023-12-02 16:51:38,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31041 to 15735. [2023-12-02 16:51:38,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15735 states, 15734 states have (on average 3.976484047286132) internal successors, (62566), 15734 states have internal predecessors, (62566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:38,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15735 states to 15735 states and 62566 transitions. [2023-12-02 16:51:38,284 INFO L78 Accepts]: Start accepts. Automaton has 15735 states and 62566 transitions. Word has length 58 [2023-12-02 16:51:38,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:38,284 INFO L495 AbstractCegarLoop]: Abstraction has 15735 states and 62566 transitions. [2023-12-02 16:51:38,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:38,285 INFO L276 IsEmpty]: Start isEmpty. Operand 15735 states and 62566 transitions. [2023-12-02 16:51:38,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:51:38,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:38,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:51:38,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-02 16:51:38,310 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:51:38,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:38,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1516668552, now seen corresponding path program 32 times [2023-12-02 16:51:38,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:38,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493207081] [2023-12-02 16:51:38,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:38,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:51:39,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:39,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493207081] [2023-12-02 16:51:39,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493207081] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:39,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:51:39,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:51:39,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707769760] [2023-12-02 16:51:39,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:39,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:51:39,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:39,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:51:39,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:51:39,561 INFO L87 Difference]: Start difference. First operand 15735 states and 62566 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:41,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:41,099 INFO L93 Difference]: Finished difference Result 31129 states and 118053 transitions. [2023-12-02 16:51:41,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:51:41,099 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:51:41,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:41,175 INFO L225 Difference]: With dead ends: 31129 [2023-12-02 16:51:41,175 INFO L226 Difference]: Without dead ends: 30867 [2023-12-02 16:51:41,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=363, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:51:41,176 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 462 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:41,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 836 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:51:41,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30867 states. [2023-12-02 16:51:41,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30867 to 15699. [2023-12-02 16:51:41,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15699 states, 15698 states have (on average 3.9779589756656897) internal successors, (62446), 15698 states have internal predecessors, (62446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:41,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15699 states to 15699 states and 62446 transitions. [2023-12-02 16:51:41,623 INFO L78 Accepts]: Start accepts. Automaton has 15699 states and 62446 transitions. Word has length 58 [2023-12-02 16:51:41,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:41,623 INFO L495 AbstractCegarLoop]: Abstraction has 15699 states and 62446 transitions. [2023-12-02 16:51:41,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:41,623 INFO L276 IsEmpty]: Start isEmpty. Operand 15699 states and 62446 transitions. [2023-12-02 16:51:41,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:51:41,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:41,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:51:41,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-02 16:51:41,649 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:51:41,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:41,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1606224136, now seen corresponding path program 33 times [2023-12-02 16:51:41,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:41,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139059252] [2023-12-02 16:51:41,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:41,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:42,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:51:42,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:42,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139059252] [2023-12-02 16:51:42,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139059252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:42,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:51:42,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:51:42,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734888562] [2023-12-02 16:51:42,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:42,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:51:42,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:42,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:51:42,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:51:42,975 INFO L87 Difference]: Start difference. First operand 15699 states and 62446 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:44,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:44,649 INFO L93 Difference]: Finished difference Result 30922 states and 117334 transitions. [2023-12-02 16:51:44,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:51:44,650 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:51:44,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:44,726 INFO L225 Difference]: With dead ends: 30922 [2023-12-02 16:51:44,726 INFO L226 Difference]: Without dead ends: 30663 [2023-12-02 16:51:44,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:51:44,726 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 401 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:44,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 1042 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:51:44,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30663 states. [2023-12-02 16:51:45,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30663 to 15930. [2023-12-02 16:51:45,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15930 states, 15929 states have (on average 3.9660995668277983) internal successors, (63176), 15929 states have internal predecessors, (63176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:45,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15930 states to 15930 states and 63176 transitions. [2023-12-02 16:51:45,154 INFO L78 Accepts]: Start accepts. Automaton has 15930 states and 63176 transitions. Word has length 58 [2023-12-02 16:51:45,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:45,154 INFO L495 AbstractCegarLoop]: Abstraction has 15930 states and 63176 transitions. [2023-12-02 16:51:45,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:45,155 INFO L276 IsEmpty]: Start isEmpty. Operand 15930 states and 63176 transitions. [2023-12-02 16:51:45,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:51:45,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:45,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:51:45,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-02 16:51:45,179 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:51:45,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:45,180 INFO L85 PathProgramCache]: Analyzing trace with hash -173743450, now seen corresponding path program 34 times [2023-12-02 16:51:45,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:45,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823193062] [2023-12-02 16:51:45,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:45,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:46,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:51:46,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:46,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823193062] [2023-12-02 16:51:46,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823193062] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:46,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:51:46,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:51:46,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700378949] [2023-12-02 16:51:46,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:46,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:51:46,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:46,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:51:46,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:51:46,278 INFO L87 Difference]: Start difference. First operand 15930 states and 63176 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:47,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:47,820 INFO L93 Difference]: Finished difference Result 30955 states and 117321 transitions. [2023-12-02 16:51:47,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:51:47,820 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:51:47,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:47,896 INFO L225 Difference]: With dead ends: 30955 [2023-12-02 16:51:47,896 INFO L226 Difference]: Without dead ends: 30822 [2023-12-02 16:51:47,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:51:47,897 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 489 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:47,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 852 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:51:47,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30822 states. [2023-12-02 16:51:48,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30822 to 15951. [2023-12-02 16:51:48,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15951 states, 15950 states have (on average 3.9642006269592476) internal successors, (63229), 15950 states have internal predecessors, (63229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:48,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15951 states to 15951 states and 63229 transitions. [2023-12-02 16:51:48,330 INFO L78 Accepts]: Start accepts. Automaton has 15951 states and 63229 transitions. Word has length 58 [2023-12-02 16:51:48,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:48,330 INFO L495 AbstractCegarLoop]: Abstraction has 15951 states and 63229 transitions. [2023-12-02 16:51:48,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:48,330 INFO L276 IsEmpty]: Start isEmpty. Operand 15951 states and 63229 transitions. [2023-12-02 16:51:48,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:51:48,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:48,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:51:48,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-02 16:51:48,359 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:51:48,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:48,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1216687864, now seen corresponding path program 35 times [2023-12-02 16:51:48,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:48,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560530657] [2023-12-02 16:51:48,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:48,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:51:49,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:49,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560530657] [2023-12-02 16:51:49,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560530657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:49,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:51:49,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:51:49,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164042086] [2023-12-02 16:51:49,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:49,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:51:49,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:49,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:51:49,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:51:49,613 INFO L87 Difference]: Start difference. First operand 15951 states and 63229 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:51,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:51,311 INFO L93 Difference]: Finished difference Result 30820 states and 116949 transitions. [2023-12-02 16:51:51,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:51:51,312 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:51:51,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:51,388 INFO L225 Difference]: With dead ends: 30820 [2023-12-02 16:51:51,388 INFO L226 Difference]: Without dead ends: 30600 [2023-12-02 16:51:51,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:51:51,389 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 525 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:51,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 800 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:51:51,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30600 states. [2023-12-02 16:51:51,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30600 to 15867. [2023-12-02 16:51:51,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15867 states, 15866 states have (on average 3.967855792260179) internal successors, (62954), 15866 states have internal predecessors, (62954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:51,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15867 states to 15867 states and 62954 transitions. [2023-12-02 16:51:51,825 INFO L78 Accepts]: Start accepts. Automaton has 15867 states and 62954 transitions. Word has length 58 [2023-12-02 16:51:51,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:51,826 INFO L495 AbstractCegarLoop]: Abstraction has 15867 states and 62954 transitions. [2023-12-02 16:51:51,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:51,826 INFO L276 IsEmpty]: Start isEmpty. Operand 15867 states and 62954 transitions. [2023-12-02 16:51:51,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:51:51,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:51,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:51:51,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-02 16:51:51,854 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:51:51,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:51,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1394547306, now seen corresponding path program 36 times [2023-12-02 16:51:51,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:51,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188924957] [2023-12-02 16:51:51,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:51,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:53,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:51:53,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:53,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188924957] [2023-12-02 16:51:53,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188924957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:53,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:51:53,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:51:53,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239535367] [2023-12-02 16:51:53,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:53,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:51:53,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:53,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:51:53,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:51:53,153 INFO L87 Difference]: Start difference. First operand 15867 states and 62954 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:54,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:54,761 INFO L93 Difference]: Finished difference Result 30781 states and 116807 transitions. [2023-12-02 16:51:54,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:51:54,762 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:51:54,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:54,843 INFO L225 Difference]: With dead ends: 30781 [2023-12-02 16:51:54,843 INFO L226 Difference]: Without dead ends: 30648 [2023-12-02 16:51:54,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:51:54,844 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 459 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:54,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 928 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:51:54,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30648 states. [2023-12-02 16:51:55,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30648 to 15930. [2023-12-02 16:51:55,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15930 states, 15929 states have (on average 3.9647812166488796) internal successors, (63155), 15929 states have internal predecessors, (63155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:55,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15930 states to 15930 states and 63155 transitions. [2023-12-02 16:51:55,321 INFO L78 Accepts]: Start accepts. Automaton has 15930 states and 63155 transitions. Word has length 58 [2023-12-02 16:51:55,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:55,321 INFO L495 AbstractCegarLoop]: Abstraction has 15930 states and 63155 transitions. [2023-12-02 16:51:55,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:55,321 INFO L276 IsEmpty]: Start isEmpty. Operand 15930 states and 63155 transitions. [2023-12-02 16:51:55,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:51:55,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:55,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:51:55,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-02 16:51:55,349 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:51:55,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:55,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1857475576, now seen corresponding path program 37 times [2023-12-02 16:51:55,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:55,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816212660] [2023-12-02 16:51:55,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:55,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:56,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:51:56,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:56,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816212660] [2023-12-02 16:51:56,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816212660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:56,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:51:56,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:51:56,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886788147] [2023-12-02 16:51:56,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:56,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:51:56,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:56,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:51:56,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:51:56,658 INFO L87 Difference]: Start difference. First operand 15930 states and 63155 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:58,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:58,243 INFO L93 Difference]: Finished difference Result 30784 states and 116792 transitions. [2023-12-02 16:51:58,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:51:58,244 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:51:58,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:58,348 INFO L225 Difference]: With dead ends: 30784 [2023-12-02 16:51:58,348 INFO L226 Difference]: Without dead ends: 30627 [2023-12-02 16:51:58,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=334, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:51:58,348 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 436 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:58,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 833 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:51:58,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30627 states. [2023-12-02 16:51:58,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30627 to 15909. [2023-12-02 16:51:58,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15909 states, 15908 states have (on average 3.9653633392004024) internal successors, (63081), 15908 states have internal predecessors, (63081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:58,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15909 states to 15909 states and 63081 transitions. [2023-12-02 16:51:58,914 INFO L78 Accepts]: Start accepts. Automaton has 15909 states and 63081 transitions. Word has length 58 [2023-12-02 16:51:58,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:58,915 INFO L495 AbstractCegarLoop]: Abstraction has 15909 states and 63081 transitions. [2023-12-02 16:51:58,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:51:58,915 INFO L276 IsEmpty]: Start isEmpty. Operand 15909 states and 63081 transitions. [2023-12-02 16:51:58,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:51:58,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:58,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:51:58,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-02 16:51:58,939 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:51:58,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:58,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1130280742, now seen corresponding path program 38 times [2023-12-02 16:51:58,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:58,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934164977] [2023-12-02 16:51:58,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:58,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:52:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:52:00,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:52:00,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934164977] [2023-12-02 16:52:00,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934164977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:52:00,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:52:00,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:52:00,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691074425] [2023-12-02 16:52:00,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:52:00,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:52:00,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:52:00,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:52:00,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:52:00,195 INFO L87 Difference]: Start difference. First operand 15909 states and 63081 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:01,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:52:01,797 INFO L93 Difference]: Finished difference Result 30625 states and 116361 transitions. [2023-12-02 16:52:01,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:52:01,797 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:52:01,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:52:01,885 INFO L225 Difference]: With dead ends: 30625 [2023-12-02 16:52:01,885 INFO L226 Difference]: Without dead ends: 30093 [2023-12-02 16:52:01,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=333, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:52:01,885 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 463 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:52:01,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 795 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:52:01,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30093 states. [2023-12-02 16:52:02,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30093 to 15603. [2023-12-02 16:52:02,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15603 states, 15602 states have (on average 3.98115626201769) internal successors, (62114), 15602 states have internal predecessors, (62114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:02,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15603 states to 15603 states and 62114 transitions. [2023-12-02 16:52:02,363 INFO L78 Accepts]: Start accepts. Automaton has 15603 states and 62114 transitions. Word has length 58 [2023-12-02 16:52:02,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:52:02,364 INFO L495 AbstractCegarLoop]: Abstraction has 15603 states and 62114 transitions. [2023-12-02 16:52:02,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:02,364 INFO L276 IsEmpty]: Start isEmpty. Operand 15603 states and 62114 transitions. [2023-12-02 16:52:02,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:52:02,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:52:02,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:52:02,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-12-02 16:52:02,393 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:52:02,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:52:02,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1439208002, now seen corresponding path program 39 times [2023-12-02 16:52:02,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:52:02,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381032577] [2023-12-02 16:52:02,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:52:02,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:52:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:52:03,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:52:03,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:52:03,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381032577] [2023-12-02 16:52:03,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381032577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:52:03,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:52:03,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:52:03,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697101383] [2023-12-02 16:52:03,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:52:03,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:52:03,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:52:03,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:52:03,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:52:03,896 INFO L87 Difference]: Start difference. First operand 15603 states and 62114 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:05,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:52:05,856 INFO L93 Difference]: Finished difference Result 31003 states and 117855 transitions. [2023-12-02 16:52:05,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:52:05,857 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:52:05,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:52:05,947 INFO L225 Difference]: With dead ends: 31003 [2023-12-02 16:52:05,947 INFO L226 Difference]: Without dead ends: 30870 [2023-12-02 16:52:05,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:52:05,948 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 468 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:52:05,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1000 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 16:52:06,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30870 states. [2023-12-02 16:52:06,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30870 to 15957. [2023-12-02 16:52:06,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15957 states, 15956 states have (on average 3.978503384306844) internal successors, (63481), 15956 states have internal predecessors, (63481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:06,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15957 states to 15957 states and 63481 transitions. [2023-12-02 16:52:06,451 INFO L78 Accepts]: Start accepts. Automaton has 15957 states and 63481 transitions. Word has length 58 [2023-12-02 16:52:06,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:52:06,451 INFO L495 AbstractCegarLoop]: Abstraction has 15957 states and 63481 transitions. [2023-12-02 16:52:06,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:06,451 INFO L276 IsEmpty]: Start isEmpty. Operand 15957 states and 63481 transitions. [2023-12-02 16:52:06,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:52:06,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:52:06,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:52:06,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-12-02 16:52:06,481 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:52:06,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:52:06,481 INFO L85 PathProgramCache]: Analyzing trace with hash -785396702, now seen corresponding path program 40 times [2023-12-02 16:52:06,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:52:06,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438435858] [2023-12-02 16:52:06,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:52:06,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:52:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:52:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:52:07,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:52:07,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438435858] [2023-12-02 16:52:07,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438435858] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:52:07,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:52:07,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:52:07,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297882443] [2023-12-02 16:52:07,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:52:07,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:52:07,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:52:07,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:52:07,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:52:07,842 INFO L87 Difference]: Start difference. First operand 15957 states and 63481 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:09,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:52:09,610 INFO L93 Difference]: Finished difference Result 30868 states and 117492 transitions. [2023-12-02 16:52:09,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:52:09,611 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:52:09,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:52:09,701 INFO L225 Difference]: With dead ends: 30868 [2023-12-02 16:52:09,701 INFO L226 Difference]: Without dead ends: 30741 [2023-12-02 16:52:09,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:52:09,702 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 444 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:52:09,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 898 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:52:09,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30741 states. [2023-12-02 16:52:10,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30741 to 15945. [2023-12-02 16:52:10,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15945 states, 15944 states have (on average 3.9787380832915202) internal successors, (63437), 15944 states have internal predecessors, (63437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:10,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15945 states to 15945 states and 63437 transitions. [2023-12-02 16:52:10,216 INFO L78 Accepts]: Start accepts. Automaton has 15945 states and 63437 transitions. Word has length 58 [2023-12-02 16:52:10,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:52:10,216 INFO L495 AbstractCegarLoop]: Abstraction has 15945 states and 63437 transitions. [2023-12-02 16:52:10,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:10,217 INFO L276 IsEmpty]: Start isEmpty. Operand 15945 states and 63437 transitions. [2023-12-02 16:52:10,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:52:10,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:52:10,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:52:10,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-12-02 16:52:10,245 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:52:10,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:52:10,246 INFO L85 PathProgramCache]: Analyzing trace with hash -748646332, now seen corresponding path program 41 times [2023-12-02 16:52:10,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:52:10,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176155364] [2023-12-02 16:52:10,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:52:10,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:52:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:52:11,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:52:11,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:52:11,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176155364] [2023-12-02 16:52:11,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176155364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:52:11,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:52:11,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:52:11,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749175286] [2023-12-02 16:52:11,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:52:11,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:52:11,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:52:11,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:52:11,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:52:11,554 INFO L87 Difference]: Start difference. First operand 15945 states and 63437 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:13,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:52:13,304 INFO L93 Difference]: Finished difference Result 30739 states and 117148 transitions. [2023-12-02 16:52:13,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:52:13,304 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:52:13,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:52:13,389 INFO L225 Difference]: With dead ends: 30739 [2023-12-02 16:52:13,389 INFO L226 Difference]: Without dead ends: 30444 [2023-12-02 16:52:13,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:52:13,390 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 427 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:52:13,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 868 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:52:13,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30444 states. [2023-12-02 16:52:13,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30444 to 15909. [2023-12-02 16:52:13,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15909 states, 15908 states have (on average 3.9779356298717627) internal successors, (63281), 15908 states have internal predecessors, (63281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:13,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15909 states to 15909 states and 63281 transitions. [2023-12-02 16:52:13,873 INFO L78 Accepts]: Start accepts. Automaton has 15909 states and 63281 transitions. Word has length 58 [2023-12-02 16:52:13,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:52:13,873 INFO L495 AbstractCegarLoop]: Abstraction has 15909 states and 63281 transitions. [2023-12-02 16:52:13,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:13,873 INFO L276 IsEmpty]: Start isEmpty. Operand 15909 states and 63281 transitions. [2023-12-02 16:52:13,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:52:13,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:52:13,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:52:13,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-02 16:52:13,902 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:52:13,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:52:13,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1807166430, now seen corresponding path program 42 times [2023-12-02 16:52:13,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:52:13,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239154853] [2023-12-02 16:52:13,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:52:13,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:52:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:52:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:52:15,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:52:15,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239154853] [2023-12-02 16:52:15,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239154853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:52:15,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:52:15,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:52:15,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988894369] [2023-12-02 16:52:15,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:52:15,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:52:15,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:52:15,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:52:15,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:52:15,490 INFO L87 Difference]: Start difference. First operand 15909 states and 63281 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:17,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:52:17,355 INFO L93 Difference]: Finished difference Result 30814 states and 117315 transitions. [2023-12-02 16:52:17,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:52:17,356 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:52:17,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:52:17,431 INFO L225 Difference]: With dead ends: 30814 [2023-12-02 16:52:17,431 INFO L226 Difference]: Without dead ends: 30681 [2023-12-02 16:52:17,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:52:17,432 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 416 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:52:17,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 1032 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 16:52:17,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30681 states. [2023-12-02 16:52:17,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30681 to 15957. [2023-12-02 16:52:17,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15957 states, 15956 states have (on average 3.9762471797442966) internal successors, (63445), 15956 states have internal predecessors, (63445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:17,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15957 states to 15957 states and 63445 transitions. [2023-12-02 16:52:17,853 INFO L78 Accepts]: Start accepts. Automaton has 15957 states and 63445 transitions. Word has length 58 [2023-12-02 16:52:17,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:52:17,853 INFO L495 AbstractCegarLoop]: Abstraction has 15957 states and 63445 transitions. [2023-12-02 16:52:17,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:17,854 INFO L276 IsEmpty]: Start isEmpty. Operand 15957 states and 63445 transitions. [2023-12-02 16:52:17,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:52:17,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:52:17,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:52:17,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-12-02 16:52:17,879 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:52:17,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:52:17,880 INFO L85 PathProgramCache]: Analyzing trace with hash 263196162, now seen corresponding path program 43 times [2023-12-02 16:52:17,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:52:17,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421986425] [2023-12-02 16:52:17,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:52:17,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:52:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:52:19,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:52:19,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:52:19,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421986425] [2023-12-02 16:52:19,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421986425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:52:19,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:52:19,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:52:19,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121475289] [2023-12-02 16:52:19,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:52:19,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:52:19,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:52:19,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:52:19,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:52:19,281 INFO L87 Difference]: Start difference. First operand 15957 states and 63445 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:21,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:52:21,256 INFO L93 Difference]: Finished difference Result 30796 states and 117252 transitions. [2023-12-02 16:52:21,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:52:21,256 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:52:21,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:52:21,337 INFO L225 Difference]: With dead ends: 30796 [2023-12-02 16:52:21,337 INFO L226 Difference]: Without dead ends: 30669 [2023-12-02 16:52:21,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:52:21,338 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 428 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:52:21,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 999 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 16:52:21,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30669 states. [2023-12-02 16:52:21,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30669 to 15945. [2023-12-02 16:52:21,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15945 states, 15944 states have (on average 3.9764801806322128) internal successors, (63401), 15944 states have internal predecessors, (63401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:21,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15945 states to 15945 states and 63401 transitions. [2023-12-02 16:52:21,819 INFO L78 Accepts]: Start accepts. Automaton has 15945 states and 63401 transitions. Word has length 58 [2023-12-02 16:52:21,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:52:21,819 INFO L495 AbstractCegarLoop]: Abstraction has 15945 states and 63401 transitions. [2023-12-02 16:52:21,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:21,820 INFO L276 IsEmpty]: Start isEmpty. Operand 15945 states and 63401 transitions. [2023-12-02 16:52:21,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:52:21,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:52:21,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:52:21,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-12-02 16:52:21,847 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:52:21,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:52:21,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1883770948, now seen corresponding path program 44 times [2023-12-02 16:52:21,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:52:21,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334759055] [2023-12-02 16:52:21,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:52:21,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:52:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:52:23,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:52:23,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:52:23,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334759055] [2023-12-02 16:52:23,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334759055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:52:23,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:52:23,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:52:23,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312841213] [2023-12-02 16:52:23,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:52:23,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:52:23,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:52:23,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:52:23,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:52:23,201 INFO L87 Difference]: Start difference. First operand 15945 states and 63401 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:24,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:52:24,941 INFO L93 Difference]: Finished difference Result 30667 states and 116908 transitions. [2023-12-02 16:52:24,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:52:24,942 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:52:24,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:52:25,017 INFO L225 Difference]: With dead ends: 30667 [2023-12-02 16:52:25,017 INFO L226 Difference]: Without dead ends: 30336 [2023-12-02 16:52:25,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:52:25,017 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 400 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:52:25,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 927 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:52:25,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30336 states. [2023-12-02 16:52:25,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30336 to 15801. [2023-12-02 16:52:25,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15801 states, 15800 states have (on average 3.9789240506329113) internal successors, (62867), 15800 states have internal predecessors, (62867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:25,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15801 states to 15801 states and 62867 transitions. [2023-12-02 16:52:25,452 INFO L78 Accepts]: Start accepts. Automaton has 15801 states and 62867 transitions. Word has length 58 [2023-12-02 16:52:25,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:52:25,453 INFO L495 AbstractCegarLoop]: Abstraction has 15801 states and 62867 transitions. [2023-12-02 16:52:25,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:25,453 INFO L276 IsEmpty]: Start isEmpty. Operand 15801 states and 62867 transitions. [2023-12-02 16:52:25,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:52:25,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:52:25,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:52:25,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-12-02 16:52:25,477 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:52:25,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:52:25,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1356332610, now seen corresponding path program 45 times [2023-12-02 16:52:25,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:52:25,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051138181] [2023-12-02 16:52:25,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:52:25,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:52:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:52:26,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:52:26,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:52:26,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051138181] [2023-12-02 16:52:26,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051138181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:52:26,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:52:26,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:52:26,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677672792] [2023-12-02 16:52:26,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:52:26,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:52:26,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:52:26,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:52:26,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:52:26,969 INFO L87 Difference]: Start difference. First operand 15801 states and 62867 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:28,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:52:28,854 INFO L93 Difference]: Finished difference Result 31231 states and 118449 transitions. [2023-12-02 16:52:28,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:52:28,855 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:52:28,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:52:28,953 INFO L225 Difference]: With dead ends: 31231 [2023-12-02 16:52:28,953 INFO L226 Difference]: Without dead ends: 31098 [2023-12-02 16:52:28,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:52:28,954 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 460 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 1527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:52:28,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 1048 Invalid, 1527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:52:29,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31098 states. [2023-12-02 16:52:29,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31098 to 15867. [2023-12-02 16:52:29,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15867 states, 15866 states have (on average 3.977436026723812) internal successors, (63106), 15866 states have internal predecessors, (63106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:29,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15867 states to 15867 states and 63106 transitions. [2023-12-02 16:52:29,505 INFO L78 Accepts]: Start accepts. Automaton has 15867 states and 63106 transitions. Word has length 58 [2023-12-02 16:52:29,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:52:29,505 INFO L495 AbstractCegarLoop]: Abstraction has 15867 states and 63106 transitions. [2023-12-02 16:52:29,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:29,506 INFO L276 IsEmpty]: Start isEmpty. Operand 15867 states and 63106 transitions. [2023-12-02 16:52:29,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:52:29,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:52:29,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:52:29,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-12-02 16:52:29,539 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:52:29,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:52:29,539 INFO L85 PathProgramCache]: Analyzing trace with hash -868272094, now seen corresponding path program 46 times [2023-12-02 16:52:29,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:52:29,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703788031] [2023-12-02 16:52:29,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:52:29,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:52:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:52:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:52:30,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:52:30,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703788031] [2023-12-02 16:52:30,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703788031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:52:30,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:52:30,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:52:30,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207834767] [2023-12-02 16:52:30,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:52:30,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:52:30,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:52:30,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:52:30,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:52:30,899 INFO L87 Difference]: Start difference. First operand 15867 states and 63106 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:32,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:52:32,699 INFO L93 Difference]: Finished difference Result 31096 states and 118086 transitions. [2023-12-02 16:52:32,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:52:32,699 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:52:32,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:52:32,801 INFO L225 Difference]: With dead ends: 31096 [2023-12-02 16:52:32,801 INFO L226 Difference]: Without dead ends: 30969 [2023-12-02 16:52:32,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:52:32,802 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 453 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:52:32,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 992 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:52:32,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30969 states. [2023-12-02 16:52:33,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30969 to 15855. [2023-12-02 16:52:33,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15855 states, 15854 states have (on average 3.9776712501576887) internal successors, (63062), 15854 states have internal predecessors, (63062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:33,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15855 states to 15855 states and 63062 transitions. [2023-12-02 16:52:33,369 INFO L78 Accepts]: Start accepts. Automaton has 15855 states and 63062 transitions. Word has length 58 [2023-12-02 16:52:33,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:52:33,370 INFO L495 AbstractCegarLoop]: Abstraction has 15855 states and 63062 transitions. [2023-12-02 16:52:33,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:33,370 INFO L276 IsEmpty]: Start isEmpty. Operand 15855 states and 63062 transitions. [2023-12-02 16:52:33,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:52:33,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:52:33,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:52:33,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-12-02 16:52:33,403 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:52:33,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:52:33,403 INFO L85 PathProgramCache]: Analyzing trace with hash -831521724, now seen corresponding path program 47 times [2023-12-02 16:52:33,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:52:33,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005241442] [2023-12-02 16:52:33,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:52:33,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:52:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:52:34,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:52:34,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:52:34,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005241442] [2023-12-02 16:52:34,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005241442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:52:34,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:52:34,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:52:34,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469482896] [2023-12-02 16:52:34,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:52:34,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:52:34,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:52:34,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:52:34,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:52:34,761 INFO L87 Difference]: Start difference. First operand 15855 states and 63062 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:36,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:52:36,789 INFO L93 Difference]: Finished difference Result 31228 states and 118474 transitions. [2023-12-02 16:52:36,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:52:36,790 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:52:36,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:52:36,879 INFO L225 Difference]: With dead ends: 31228 [2023-12-02 16:52:36,879 INFO L226 Difference]: Without dead ends: 30933 [2023-12-02 16:52:36,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:52:36,880 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 480 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:52:36,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 949 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 16:52:36,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30933 states. [2023-12-02 16:52:37,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30933 to 15819. [2023-12-02 16:52:37,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15819 states, 15818 states have (on average 3.97799974712353) internal successors, (62924), 15818 states have internal predecessors, (62924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:37,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15819 states to 15819 states and 62924 transitions. [2023-12-02 16:52:37,499 INFO L78 Accepts]: Start accepts. Automaton has 15819 states and 62924 transitions. Word has length 58 [2023-12-02 16:52:37,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:52:37,500 INFO L495 AbstractCegarLoop]: Abstraction has 15819 states and 62924 transitions. [2023-12-02 16:52:37,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:37,500 INFO L276 IsEmpty]: Start isEmpty. Operand 15819 states and 62924 transitions. [2023-12-02 16:52:37,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:52:37,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:52:37,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:52:37,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-12-02 16:52:37,530 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:52:37,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:52:37,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2011912292, now seen corresponding path program 48 times [2023-12-02 16:52:37,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:52:37,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624241981] [2023-12-02 16:52:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:52:37,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:52:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:52:38,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:52:38,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:52:38,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624241981] [2023-12-02 16:52:38,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624241981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:52:38,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:52:38,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:52:38,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308235086] [2023-12-02 16:52:38,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:52:38,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:52:38,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:52:38,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:52:38,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:52:38,886 INFO L87 Difference]: Start difference. First operand 15819 states and 62924 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:40,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:52:40,555 INFO L93 Difference]: Finished difference Result 31243 states and 118455 transitions. [2023-12-02 16:52:40,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:52:40,557 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:52:40,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:52:40,654 INFO L225 Difference]: With dead ends: 31243 [2023-12-02 16:52:40,654 INFO L226 Difference]: Without dead ends: 31110 [2023-12-02 16:52:40,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:52:40,655 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 465 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:52:40,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 1023 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:52:40,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31110 states. [2023-12-02 16:52:41,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31110 to 15837. [2023-12-02 16:52:41,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15837 states, 15836 states have (on average 3.9770775448345543) internal successors, (62981), 15836 states have internal predecessors, (62981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:41,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15837 states to 15837 states and 62981 transitions. [2023-12-02 16:52:41,190 INFO L78 Accepts]: Start accepts. Automaton has 15837 states and 62981 transitions. Word has length 58 [2023-12-02 16:52:41,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:52:41,190 INFO L495 AbstractCegarLoop]: Abstraction has 15837 states and 62981 transitions. [2023-12-02 16:52:41,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:41,190 INFO L276 IsEmpty]: Start isEmpty. Operand 15837 states and 62981 transitions. [2023-12-02 16:52:41,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:52:41,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:52:41,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:52:41,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-12-02 16:52:41,222 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:52:41,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:52:41,223 INFO L85 PathProgramCache]: Analyzing trace with hash -212692412, now seen corresponding path program 49 times [2023-12-02 16:52:41,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:52:41,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666859708] [2023-12-02 16:52:41,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:52:41,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:52:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:52:42,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:52:42,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:52:42,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666859708] [2023-12-02 16:52:42,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666859708] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:52:42,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:52:42,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:52:42,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600487446] [2023-12-02 16:52:42,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:52:42,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:52:42,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:52:42,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:52:42,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:52:42,553 INFO L87 Difference]: Start difference. First operand 15837 states and 62981 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:44,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:52:44,397 INFO L93 Difference]: Finished difference Result 31225 states and 118392 transitions. [2023-12-02 16:52:44,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:52:44,397 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:52:44,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:52:44,488 INFO L225 Difference]: With dead ends: 31225 [2023-12-02 16:52:44,488 INFO L226 Difference]: Without dead ends: 31098 [2023-12-02 16:52:44,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:52:44,489 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 495 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:52:44,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 957 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:52:44,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31098 states. [2023-12-02 16:52:44,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31098 to 15825. [2023-12-02 16:52:44,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15825 states, 15824 states have (on average 3.977692113245703) internal successors, (62943), 15824 states have internal predecessors, (62943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:45,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15825 states to 15825 states and 62943 transitions. [2023-12-02 16:52:45,013 INFO L78 Accepts]: Start accepts. Automaton has 15825 states and 62943 transitions. Word has length 58 [2023-12-02 16:52:45,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:52:45,013 INFO L495 AbstractCegarLoop]: Abstraction has 15825 states and 62943 transitions. [2023-12-02 16:52:45,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:45,013 INFO L276 IsEmpty]: Start isEmpty. Operand 15825 states and 62943 transitions. [2023-12-02 16:52:45,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:52:45,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:52:45,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:52:45,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-12-02 16:52:45,045 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:52:45,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:52:45,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1059917246, now seen corresponding path program 50 times [2023-12-02 16:52:45,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:52:45,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046185452] [2023-12-02 16:52:45,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:52:45,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:52:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:52:46,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:52:46,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:52:46,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046185452] [2023-12-02 16:52:46,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046185452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:52:46,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:52:46,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:52:46,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125617446] [2023-12-02 16:52:46,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:52:46,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:52:46,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:52:46,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:52:46,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:52:46,488 INFO L87 Difference]: Start difference. First operand 15825 states and 62943 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:48,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:52:48,207 INFO L93 Difference]: Finished difference Result 31255 states and 118485 transitions. [2023-12-02 16:52:48,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:52:48,208 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:52:48,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:52:48,296 INFO L225 Difference]: With dead ends: 31255 [2023-12-02 16:52:48,296 INFO L226 Difference]: Without dead ends: 31122 [2023-12-02 16:52:48,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:52:48,296 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 507 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 1423 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:52:48,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 943 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1423 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:52:48,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31122 states. [2023-12-02 16:52:48,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31122 to 15846. [2023-12-02 16:52:48,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15846 states, 15845 states have (on average 3.975765225623225) internal successors, (62996), 15845 states have internal predecessors, (62996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:48,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15846 states to 15846 states and 62996 transitions. [2023-12-02 16:52:48,851 INFO L78 Accepts]: Start accepts. Automaton has 15846 states and 62996 transitions. Word has length 58 [2023-12-02 16:52:48,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:52:48,851 INFO L495 AbstractCegarLoop]: Abstraction has 15846 states and 62996 transitions. [2023-12-02 16:52:48,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:48,852 INFO L276 IsEmpty]: Start isEmpty. Operand 15846 states and 62996 transitions. [2023-12-02 16:52:48,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:52:48,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:52:48,884 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:52:48,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-12-02 16:52:48,884 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:52:48,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:52:48,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2102861660, now seen corresponding path program 51 times [2023-12-02 16:52:48,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:52:48,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787423275] [2023-12-02 16:52:48,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:52:48,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:52:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:52:50,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:52:50,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:52:50,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787423275] [2023-12-02 16:52:50,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787423275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:52:50,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:52:50,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:52:50,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830342366] [2023-12-02 16:52:50,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:52:50,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:52:50,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:52:50,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:52:50,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:52:50,303 INFO L87 Difference]: Start difference. First operand 15846 states and 62996 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:52,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:52:52,203 INFO L93 Difference]: Finished difference Result 31165 states and 118246 transitions. [2023-12-02 16:52:52,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:52:52,203 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:52:52,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:52:52,301 INFO L225 Difference]: With dead ends: 31165 [2023-12-02 16:52:52,301 INFO L226 Difference]: Without dead ends: 31008 [2023-12-02 16:52:52,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:52:52,302 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 435 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:52:52,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 988 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:52:52,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31008 states. [2023-12-02 16:52:52,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31008 to 15825. [2023-12-02 16:52:52,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15825 states, 15824 states have (on average 3.9773129423660265) internal successors, (62937), 15824 states have internal predecessors, (62937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:52,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15825 states to 15825 states and 62937 transitions. [2023-12-02 16:52:52,848 INFO L78 Accepts]: Start accepts. Automaton has 15825 states and 62937 transitions. Word has length 58 [2023-12-02 16:52:52,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:52:52,849 INFO L495 AbstractCegarLoop]: Abstraction has 15825 states and 62937 transitions. [2023-12-02 16:52:52,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:52,849 INFO L276 IsEmpty]: Start isEmpty. Operand 15825 states and 62937 transitions. [2023-12-02 16:52:52,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:52:52,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:52:52,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:52:52,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-12-02 16:52:52,881 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:52:52,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:52:52,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1815769122, now seen corresponding path program 52 times [2023-12-02 16:52:52,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:52:52,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919227329] [2023-12-02 16:52:52,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:52:52,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:52:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:52:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:52:54,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:52:54,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919227329] [2023-12-02 16:52:54,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919227329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:52:54,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:52:54,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:52:54,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215315042] [2023-12-02 16:52:54,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:52:54,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:52:54,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:52:54,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:52:54,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:52:54,311 INFO L87 Difference]: Start difference. First operand 15825 states and 62937 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:56,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:52:56,168 INFO L93 Difference]: Finished difference Result 31054 states and 117921 transitions. [2023-12-02 16:52:56,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:52:56,168 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:52:56,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:52:56,264 INFO L225 Difference]: With dead ends: 31054 [2023-12-02 16:52:56,264 INFO L226 Difference]: Without dead ends: 30939 [2023-12-02 16:52:56,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:52:56,264 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 459 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:52:56,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 941 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:52:56,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30939 states. [2023-12-02 16:52:56,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30939 to 15837. [2023-12-02 16:52:56,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15837 states, 15836 states have (on average 3.976319777721647) internal successors, (62969), 15836 states have internal predecessors, (62969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:56,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15837 states to 15837 states and 62969 transitions. [2023-12-02 16:52:56,727 INFO L78 Accepts]: Start accepts. Automaton has 15837 states and 62969 transitions. Word has length 58 [2023-12-02 16:52:56,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:52:56,727 INFO L495 AbstractCegarLoop]: Abstraction has 15837 states and 62969 transitions. [2023-12-02 16:52:56,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:52:56,727 INFO L276 IsEmpty]: Start isEmpty. Operand 15837 states and 62969 transitions. [2023-12-02 16:52:56,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:52:56,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:52:56,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:52:56,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-12-02 16:52:56,754 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:52:56,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:52:56,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1054268796, now seen corresponding path program 53 times [2023-12-02 16:52:56,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:52:56,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495822862] [2023-12-02 16:52:56,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:52:56,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:52:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:52:58,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:52:58,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:52:58,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495822862] [2023-12-02 16:52:58,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495822862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:52:58,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:52:58,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:52:58,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697547752] [2023-12-02 16:52:58,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:52:58,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:52:58,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:52:58,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:52:58,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:52:58,263 INFO L87 Difference]: Start difference. First operand 15837 states and 62969 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:00,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:53:00,202 INFO L93 Difference]: Finished difference Result 30982 states and 117742 transitions. [2023-12-02 16:53:00,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:53:00,203 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:53:00,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:53:00,308 INFO L225 Difference]: With dead ends: 30982 [2023-12-02 16:53:00,308 INFO L226 Difference]: Without dead ends: 30828 [2023-12-02 16:53:00,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:53:00,309 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 483 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:53:00,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 936 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 16:53:00,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30828 states. [2023-12-02 16:53:00,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30828 to 15819. [2023-12-02 16:53:00,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15819 states, 15818 states have (on average 3.9776204324187634) internal successors, (62918), 15818 states have internal predecessors, (62918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:00,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15819 states to 15819 states and 62918 transitions. [2023-12-02 16:53:00,895 INFO L78 Accepts]: Start accepts. Automaton has 15819 states and 62918 transitions. Word has length 58 [2023-12-02 16:53:00,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:53:00,896 INFO L495 AbstractCegarLoop]: Abstraction has 15819 states and 62918 transitions. [2023-12-02 16:53:00,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:00,896 INFO L276 IsEmpty]: Start isEmpty. Operand 15819 states and 62918 transitions. [2023-12-02 16:53:00,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:53:00,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:53:00,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:53:00,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-12-02 16:53:00,931 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:53:00,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:53:00,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1568956890, now seen corresponding path program 54 times [2023-12-02 16:53:00,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:53:00,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886756981] [2023-12-02 16:53:00,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:00,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:53:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:02,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:53:02,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:53:02,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886756981] [2023-12-02 16:53:02,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886756981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:53:02,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:53:02,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:53:02,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607403495] [2023-12-02 16:53:02,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:53:02,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:53:02,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:53:02,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:53:02,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:53:02,511 INFO L87 Difference]: Start difference. First operand 15819 states and 62918 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:04,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:53:04,790 INFO L93 Difference]: Finished difference Result 30895 states and 117478 transitions. [2023-12-02 16:53:04,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:53:04,791 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:53:04,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:53:04,893 INFO L225 Difference]: With dead ends: 30895 [2023-12-02 16:53:04,894 INFO L226 Difference]: Without dead ends: 30636 [2023-12-02 16:53:04,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:53:04,894 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 400 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:53:04,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 993 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 16:53:04,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30636 states. [2023-12-02 16:53:05,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30636 to 15882. [2023-12-02 16:53:05,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15882 states, 15881 states have (on average 3.9718531578615957) internal successors, (63077), 15881 states have internal predecessors, (63077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:05,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15882 states to 15882 states and 63077 transitions. [2023-12-02 16:53:05,468 INFO L78 Accepts]: Start accepts. Automaton has 15882 states and 63077 transitions. Word has length 58 [2023-12-02 16:53:05,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:53:05,469 INFO L495 AbstractCegarLoop]: Abstraction has 15882 states and 63077 transitions. [2023-12-02 16:53:05,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:05,469 INFO L276 IsEmpty]: Start isEmpty. Operand 15882 states and 63077 transitions. [2023-12-02 16:53:05,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:53:05,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:53:05,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:53:05,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-12-02 16:53:05,503 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:53:05,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:53:05,503 INFO L85 PathProgramCache]: Analyzing trace with hash 946042820, now seen corresponding path program 55 times [2023-12-02 16:53:05,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:53:05,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381679661] [2023-12-02 16:53:05,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:05,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:53:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:53:07,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:53:07,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381679661] [2023-12-02 16:53:07,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381679661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:53:07,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:53:07,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:53:07,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570603558] [2023-12-02 16:53:07,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:53:07,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:53:07,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:53:07,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:53:07,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:53:07,172 INFO L87 Difference]: Start difference. First operand 15882 states and 63077 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:09,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:53:09,128 INFO L93 Difference]: Finished difference Result 30793 states and 117114 transitions. [2023-12-02 16:53:09,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:53:09,129 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:53:09,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:53:09,244 INFO L225 Difference]: With dead ends: 30793 [2023-12-02 16:53:09,244 INFO L226 Difference]: Without dead ends: 30660 [2023-12-02 16:53:09,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:53:09,245 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 458 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:53:09,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 854 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:53:09,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30660 states. [2023-12-02 16:53:09,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30660 to 15903. [2023-12-02 16:53:09,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15903 states, 15902 states have (on average 3.969940887938624) internal successors, (63130), 15902 states have internal predecessors, (63130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:09,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15903 states to 15903 states and 63130 transitions. [2023-12-02 16:53:09,912 INFO L78 Accepts]: Start accepts. Automaton has 15903 states and 63130 transitions. Word has length 58 [2023-12-02 16:53:09,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:53:09,912 INFO L495 AbstractCegarLoop]: Abstraction has 15903 states and 63130 transitions. [2023-12-02 16:53:09,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:09,912 INFO L276 IsEmpty]: Start isEmpty. Operand 15903 states and 63130 transitions. [2023-12-02 16:53:09,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:53:09,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:53:09,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:53:09,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-12-02 16:53:09,948 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:53:09,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:53:09,951 INFO L85 PathProgramCache]: Analyzing trace with hash -96901594, now seen corresponding path program 56 times [2023-12-02 16:53:09,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:53:09,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100916376] [2023-12-02 16:53:09,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:09,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:53:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:53:11,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:53:11,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100916376] [2023-12-02 16:53:11,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100916376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:53:11,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:53:11,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:53:11,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760546549] [2023-12-02 16:53:11,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:53:11,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:53:11,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:53:11,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:53:11,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:53:11,518 INFO L87 Difference]: Start difference. First operand 15903 states and 63130 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:13,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:53:13,731 INFO L93 Difference]: Finished difference Result 30658 states and 116742 transitions. [2023-12-02 16:53:13,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:53:13,732 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:53:13,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:53:13,838 INFO L225 Difference]: With dead ends: 30658 [2023-12-02 16:53:13,838 INFO L226 Difference]: Without dead ends: 30420 [2023-12-02 16:53:13,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:53:13,838 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 360 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:53:13,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 960 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 16:53:13,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30420 states. [2023-12-02 16:53:14,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30420 to 15801. [2023-12-02 16:53:14,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15801 states, 15800 states have (on average 3.9777848101265825) internal successors, (62849), 15800 states have internal predecessors, (62849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:14,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15801 states to 15801 states and 62849 transitions. [2023-12-02 16:53:14,416 INFO L78 Accepts]: Start accepts. Automaton has 15801 states and 62849 transitions. Word has length 58 [2023-12-02 16:53:14,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:53:14,416 INFO L495 AbstractCegarLoop]: Abstraction has 15801 states and 62849 transitions. [2023-12-02 16:53:14,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:14,416 INFO L276 IsEmpty]: Start isEmpty. Operand 15801 states and 62849 transitions. [2023-12-02 16:53:14,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:53:14,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:53:14,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:53:14,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-12-02 16:53:14,451 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:53:14,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:53:14,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1068006366, now seen corresponding path program 57 times [2023-12-02 16:53:14,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:53:14,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565605655] [2023-12-02 16:53:14,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:14,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:53:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:53:16,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:53:16,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565605655] [2023-12-02 16:53:16,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565605655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:53:16,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:53:16,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:53:16,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204114308] [2023-12-02 16:53:16,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:53:16,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:53:16,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:53:16,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:53:16,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:53:16,092 INFO L87 Difference]: Start difference. First operand 15801 states and 62849 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:18,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:53:18,086 INFO L93 Difference]: Finished difference Result 31015 states and 117837 transitions. [2023-12-02 16:53:18,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:53:18,086 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:53:18,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:53:18,180 INFO L225 Difference]: With dead ends: 31015 [2023-12-02 16:53:18,180 INFO L226 Difference]: Without dead ends: 30882 [2023-12-02 16:53:18,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:53:18,181 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 442 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:53:18,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 1000 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 16:53:18,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30882 states. [2023-12-02 16:53:18,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30882 to 15867. [2023-12-02 16:53:18,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15867 states, 15866 states have (on average 3.976301525274171) internal successors, (63088), 15866 states have internal predecessors, (63088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15867 states to 15867 states and 63088 transitions. [2023-12-02 16:53:18,794 INFO L78 Accepts]: Start accepts. Automaton has 15867 states and 63088 transitions. Word has length 58 [2023-12-02 16:53:18,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:53:18,794 INFO L495 AbstractCegarLoop]: Abstraction has 15867 states and 63088 transitions. [2023-12-02 16:53:18,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:18,795 INFO L276 IsEmpty]: Start isEmpty. Operand 15867 states and 63088 transitions. [2023-12-02 16:53:18,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:53:18,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:53:18,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:53:18,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-12-02 16:53:18,826 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:53:18,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:53:18,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1002356226, now seen corresponding path program 58 times [2023-12-02 16:53:18,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:53:18,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351437236] [2023-12-02 16:53:18,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:18,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:53:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:53:20,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:53:20,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351437236] [2023-12-02 16:53:20,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351437236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:53:20,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:53:20,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:53:20,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146309274] [2023-12-02 16:53:20,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:53:20,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:53:20,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:53:20,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:53:20,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:53:20,307 INFO L87 Difference]: Start difference. First operand 15867 states and 63088 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:22,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:53:22,026 INFO L93 Difference]: Finished difference Result 30997 states and 117774 transitions. [2023-12-02 16:53:22,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:53:22,026 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:53:22,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:53:22,117 INFO L225 Difference]: With dead ends: 30997 [2023-12-02 16:53:22,117 INFO L226 Difference]: Without dead ends: 30870 [2023-12-02 16:53:22,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:53:22,118 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 483 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:53:22,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 969 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1424 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:53:22,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30870 states. [2023-12-02 16:53:22,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30870 to 15855. [2023-12-02 16:53:22,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15855 states, 15854 states have (on average 3.9765358899962155) internal successors, (63044), 15854 states have internal predecessors, (63044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:22,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15855 states to 15855 states and 63044 transitions. [2023-12-02 16:53:22,639 INFO L78 Accepts]: Start accepts. Automaton has 15855 states and 63044 transitions. Word has length 58 [2023-12-02 16:53:22,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:53:22,639 INFO L495 AbstractCegarLoop]: Abstraction has 15855 states and 63044 transitions. [2023-12-02 16:53:22,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:22,639 INFO L276 IsEmpty]: Start isEmpty. Operand 15855 states and 63044 transitions. [2023-12-02 16:53:22,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:53:22,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:53:22,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:53:22,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-12-02 16:53:22,668 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:53:22,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:53:22,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1672036284, now seen corresponding path program 59 times [2023-12-02 16:53:22,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:53:22,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872377784] [2023-12-02 16:53:22,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:22,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:53:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:24,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:53:24,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:53:24,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872377784] [2023-12-02 16:53:24,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872377784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:53:24,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:53:24,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:53:24,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155468096] [2023-12-02 16:53:24,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:53:24,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:53:24,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:53:24,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:53:24,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:53:24,128 INFO L87 Difference]: Start difference. First operand 15855 states and 63044 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:25,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:53:25,988 INFO L93 Difference]: Finished difference Result 31057 states and 117958 transitions. [2023-12-02 16:53:25,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:53:25,989 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:53:25,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:53:26,085 INFO L225 Difference]: With dead ends: 31057 [2023-12-02 16:53:26,085 INFO L226 Difference]: Without dead ends: 30834 [2023-12-02 16:53:26,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:53:26,086 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 433 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:53:26,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 992 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:53:26,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30834 states. [2023-12-02 16:53:26,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30834 to 15819. [2023-12-02 16:53:26,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15819 states, 15818 states have (on average 3.97686180300923) internal successors, (62906), 15818 states have internal predecessors, (62906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:26,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15819 states to 15819 states and 62906 transitions. [2023-12-02 16:53:26,776 INFO L78 Accepts]: Start accepts. Automaton has 15819 states and 62906 transitions. Word has length 58 [2023-12-02 16:53:26,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:53:26,776 INFO L495 AbstractCegarLoop]: Abstraction has 15819 states and 62906 transitions. [2023-12-02 16:53:26,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:26,776 INFO L276 IsEmpty]: Start isEmpty. Operand 15819 states and 62906 transitions. [2023-12-02 16:53:26,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:53:26,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:53:26,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:53:26,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-12-02 16:53:26,804 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:53:26,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:53:26,806 INFO L85 PathProgramCache]: Analyzing trace with hash 392340036, now seen corresponding path program 60 times [2023-12-02 16:53:26,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:53:26,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557288001] [2023-12-02 16:53:26,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:26,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:53:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:28,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:53:28,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:53:28,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557288001] [2023-12-02 16:53:28,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557288001] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:53:28,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:53:28,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:53:28,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876866276] [2023-12-02 16:53:28,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:53:28,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:53:28,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:53:28,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:53:28,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:53:28,097 INFO L87 Difference]: Start difference. First operand 15819 states and 62906 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:29,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:53:29,913 INFO L93 Difference]: Finished difference Result 31144 states and 118143 transitions. [2023-12-02 16:53:29,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:53:29,914 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:53:29,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:53:29,996 INFO L225 Difference]: With dead ends: 31144 [2023-12-02 16:53:29,996 INFO L226 Difference]: Without dead ends: 31011 [2023-12-02 16:53:29,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:53:29,997 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 434 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:53:29,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1026 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1543 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:53:30,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31011 states. [2023-12-02 16:53:30,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31011 to 15837. [2023-12-02 16:53:30,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15837 states, 15836 states have (on average 3.975940894165193) internal successors, (62963), 15836 states have internal predecessors, (62963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:30,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15837 states to 15837 states and 62963 transitions. [2023-12-02 16:53:30,541 INFO L78 Accepts]: Start accepts. Automaton has 15837 states and 62963 transitions. Word has length 58 [2023-12-02 16:53:30,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:53:30,541 INFO L495 AbstractCegarLoop]: Abstraction has 15837 states and 62963 transitions. [2023-12-02 16:53:30,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:30,541 INFO L276 IsEmpty]: Start isEmpty. Operand 15837 states and 62963 transitions. [2023-12-02 16:53:30,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:53:30,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:53:30,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:53:30,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-12-02 16:53:30,572 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:53:30,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:53:30,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1832264668, now seen corresponding path program 61 times [2023-12-02 16:53:30,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:53:30,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205506383] [2023-12-02 16:53:30,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:30,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:53:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:31,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:53:31,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:53:31,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205506383] [2023-12-02 16:53:31,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205506383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:53:31,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:53:31,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:53:31,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543344977] [2023-12-02 16:53:31,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:53:31,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:53:31,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:53:31,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:53:31,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:53:31,861 INFO L87 Difference]: Start difference. First operand 15837 states and 62963 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:33,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:53:33,784 INFO L93 Difference]: Finished difference Result 31126 states and 118080 transitions. [2023-12-02 16:53:33,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:53:33,784 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:53:33,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:53:33,865 INFO L225 Difference]: With dead ends: 31126 [2023-12-02 16:53:33,865 INFO L226 Difference]: Without dead ends: 30999 [2023-12-02 16:53:33,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:53:33,865 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 445 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:53:33,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1037 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1567 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:53:33,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30999 states. [2023-12-02 16:53:34,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30999 to 15825. [2023-12-02 16:53:34,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15825 states, 15824 states have (on average 3.9765546006066734) internal successors, (62925), 15824 states have internal predecessors, (62925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:34,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15825 states to 15825 states and 62925 transitions. [2023-12-02 16:53:34,292 INFO L78 Accepts]: Start accepts. Automaton has 15825 states and 62925 transitions. Word has length 58 [2023-12-02 16:53:34,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:53:34,293 INFO L495 AbstractCegarLoop]: Abstraction has 15825 states and 62925 transitions. [2023-12-02 16:53:34,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:34,293 INFO L276 IsEmpty]: Start isEmpty. Operand 15825 states and 62925 transitions. [2023-12-02 16:53:34,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:53:34,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:53:34,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:53:34,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-12-02 16:53:34,317 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:53:34,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:53:34,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1615477794, now seen corresponding path program 62 times [2023-12-02 16:53:34,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:53:34,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044843198] [2023-12-02 16:53:34,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:34,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:53:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:35,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:53:35,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:53:35,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044843198] [2023-12-02 16:53:35,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044843198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:53:35,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:53:35,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:53:35,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939780438] [2023-12-02 16:53:35,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:53:35,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:53:35,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:53:35,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:53:35,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:53:35,592 INFO L87 Difference]: Start difference. First operand 15825 states and 62925 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:37,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:53:37,244 INFO L93 Difference]: Finished difference Result 30973 states and 117666 transitions. [2023-12-02 16:53:37,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:53:37,244 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:53:37,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:53:37,334 INFO L225 Difference]: With dead ends: 30973 [2023-12-02 16:53:37,335 INFO L226 Difference]: Without dead ends: 30840 [2023-12-02 16:53:37,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:53:37,335 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 514 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:53:37,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 877 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:53:37,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30840 states. [2023-12-02 16:53:37,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30840 to 15846. [2023-12-02 16:53:37,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15846 states, 15845 states have (on average 3.9746292205743137) internal successors, (62978), 15845 states have internal predecessors, (62978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:37,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15846 states to 15846 states and 62978 transitions. [2023-12-02 16:53:37,781 INFO L78 Accepts]: Start accepts. Automaton has 15846 states and 62978 transitions. Word has length 58 [2023-12-02 16:53:37,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:53:37,782 INFO L495 AbstractCegarLoop]: Abstraction has 15846 states and 62978 transitions. [2023-12-02 16:53:37,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:37,782 INFO L276 IsEmpty]: Start isEmpty. Operand 15846 states and 62978 transitions. [2023-12-02 16:53:37,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:53:37,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:53:37,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:53:37,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-12-02 16:53:37,806 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:53:37,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:53:37,807 INFO L85 PathProgramCache]: Analyzing trace with hash 572533380, now seen corresponding path program 63 times [2023-12-02 16:53:37,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:53:37,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923667568] [2023-12-02 16:53:37,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:37,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:53:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:53:39,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:53:39,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923667568] [2023-12-02 16:53:39,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923667568] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:53:39,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:53:39,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:53:39,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093007813] [2023-12-02 16:53:39,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:53:39,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:53:39,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:53:39,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:53:39,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:53:39,089 INFO L87 Difference]: Start difference. First operand 15846 states and 62978 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:40,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:53:40,908 INFO L93 Difference]: Finished difference Result 30883 states and 117427 transitions. [2023-12-02 16:53:40,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:53:40,908 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:53:40,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:53:41,002 INFO L225 Difference]: With dead ends: 30883 [2023-12-02 16:53:41,002 INFO L226 Difference]: Without dead ends: 30726 [2023-12-02 16:53:41,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:53:41,002 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 432 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:53:41,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 859 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:53:41,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30726 states. [2023-12-02 16:53:41,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30726 to 15825. [2023-12-02 16:53:41,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15825 states, 15824 states have (on average 3.976175429726997) internal successors, (62919), 15824 states have internal predecessors, (62919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:41,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15825 states to 15825 states and 62919 transitions. [2023-12-02 16:53:41,463 INFO L78 Accepts]: Start accepts. Automaton has 15825 states and 62919 transitions. Word has length 58 [2023-12-02 16:53:41,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:53:41,463 INFO L495 AbstractCegarLoop]: Abstraction has 15825 states and 62919 transitions. [2023-12-02 16:53:41,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:41,463 INFO L276 IsEmpty]: Start isEmpty. Operand 15825 states and 62919 transitions. [2023-12-02 16:53:41,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:53:41,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:53:41,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:53:41,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-12-02 16:53:41,490 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:53:41,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:53:41,490 INFO L85 PathProgramCache]: Analyzing trace with hash 196196866, now seen corresponding path program 64 times [2023-12-02 16:53:41,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:53:41,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012937650] [2023-12-02 16:53:41,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:41,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:53:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:42,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:53:42,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:53:42,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012937650] [2023-12-02 16:53:42,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012937650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:53:42,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:53:42,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:53:42,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681445796] [2023-12-02 16:53:42,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:53:42,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:53:42,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:53:42,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:53:42,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:53:42,839 INFO L87 Difference]: Start difference. First operand 15825 states and 62919 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:44,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:53:44,625 INFO L93 Difference]: Finished difference Result 30991 states and 117712 transitions. [2023-12-02 16:53:44,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:53:44,625 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:53:44,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:53:44,706 INFO L225 Difference]: With dead ends: 30991 [2023-12-02 16:53:44,706 INFO L226 Difference]: Without dead ends: 30876 [2023-12-02 16:53:44,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:53:44,706 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 440 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:53:44,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 989 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1497 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:53:44,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30876 states. [2023-12-02 16:53:45,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30876 to 15837. [2023-12-02 16:53:45,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15837 states, 15836 states have (on average 3.975183127052286) internal successors, (62951), 15836 states have internal predecessors, (62951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:45,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15837 states to 15837 states and 62951 transitions. [2023-12-02 16:53:45,196 INFO L78 Accepts]: Start accepts. Automaton has 15837 states and 62951 transitions. Word has length 58 [2023-12-02 16:53:45,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:53:45,196 INFO L495 AbstractCegarLoop]: Abstraction has 15837 states and 62951 transitions. [2023-12-02 16:53:45,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:45,197 INFO L276 IsEmpty]: Start isEmpty. Operand 15837 states and 62951 transitions. [2023-12-02 16:53:45,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:53:45,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:53:45,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:53:45,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-12-02 16:53:45,227 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:53:45,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:53:45,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1621126244, now seen corresponding path program 65 times [2023-12-02 16:53:45,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:53:45,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433147332] [2023-12-02 16:53:45,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:45,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:53:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:46,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:53:46,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:53:46,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433147332] [2023-12-02 16:53:46,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433147332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:53:46,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:53:46,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:53:46,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680482830] [2023-12-02 16:53:46,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:53:46,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:53:46,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:53:46,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:53:46,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:53:46,509 INFO L87 Difference]: Start difference. First operand 15837 states and 62951 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:48,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:53:48,074 INFO L93 Difference]: Finished difference Result 30874 states and 117400 transitions. [2023-12-02 16:53:48,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:53:48,075 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:53:48,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:53:48,159 INFO L225 Difference]: With dead ends: 30874 [2023-12-02 16:53:48,159 INFO L226 Difference]: Without dead ends: 30720 [2023-12-02 16:53:48,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:53:48,160 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 462 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:53:48,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 929 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:53:48,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30720 states. [2023-12-02 16:53:48,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30720 to 15819. [2023-12-02 16:53:48,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15819 states, 15818 states have (on average 3.9764824883044634) internal successors, (62900), 15818 states have internal predecessors, (62900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:48,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15819 states to 15819 states and 62900 transitions. [2023-12-02 16:53:48,638 INFO L78 Accepts]: Start accepts. Automaton has 15819 states and 62900 transitions. Word has length 58 [2023-12-02 16:53:48,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:53:48,638 INFO L495 AbstractCegarLoop]: Abstraction has 15819 states and 62900 transitions. [2023-12-02 16:53:48,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:48,638 INFO L276 IsEmpty]: Start isEmpty. Operand 15819 states and 62900 transitions. [2023-12-02 16:53:48,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:53:48,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:53:48,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:53:48,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-12-02 16:53:48,667 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:53:48,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:53:48,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1080729126, now seen corresponding path program 66 times [2023-12-02 16:53:48,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:53:48,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305708793] [2023-12-02 16:53:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:48,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:53:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:50,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:53:50,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:53:50,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305708793] [2023-12-02 16:53:50,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305708793] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:53:50,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:53:50,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:53:50,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759372964] [2023-12-02 16:53:50,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:53:50,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:53:50,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:53:50,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:53:50,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:53:50,145 INFO L87 Difference]: Start difference. First operand 15819 states and 62900 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:51,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:53:51,806 INFO L93 Difference]: Finished difference Result 30778 states and 117115 transitions. [2023-12-02 16:53:51,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:53:51,807 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:53:51,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:53:51,898 INFO L225 Difference]: With dead ends: 30778 [2023-12-02 16:53:51,898 INFO L226 Difference]: Without dead ends: 30591 [2023-12-02 16:53:51,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:53:51,899 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 457 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:53:51,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 854 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:53:51,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30591 states. [2023-12-02 16:53:52,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30591 to 15855. [2023-12-02 16:53:52,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15855 states, 15854 states have (on average 3.973508262898953) internal successors, (62996), 15854 states have internal predecessors, (62996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:52,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15855 states to 15855 states and 62996 transitions. [2023-12-02 16:53:52,402 INFO L78 Accepts]: Start accepts. Automaton has 15855 states and 62996 transitions. Word has length 58 [2023-12-02 16:53:52,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:53:52,402 INFO L495 AbstractCegarLoop]: Abstraction has 15855 states and 62996 transitions. [2023-12-02 16:53:52,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:52,403 INFO L276 IsEmpty]: Start isEmpty. Operand 15855 states and 62996 transitions. [2023-12-02 16:53:52,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:53:52,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:53:52,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:53:52,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-12-02 16:53:52,433 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:53:52,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:53:52,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1504562236, now seen corresponding path program 67 times [2023-12-02 16:53:52,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:53:52,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659440856] [2023-12-02 16:53:52,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:52,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:53:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:53,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:53:53,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:53:53,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659440856] [2023-12-02 16:53:53,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659440856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:53:53,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:53:53,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:53:53,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438148376] [2023-12-02 16:53:53,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:53:53,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:53:53,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:53:53,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:53:53,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:53:53,796 INFO L87 Difference]: Start difference. First operand 15855 states and 62996 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:55,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:53:55,572 INFO L93 Difference]: Finished difference Result 30739 states and 116952 transitions. [2023-12-02 16:53:55,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:53:55,573 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:53:55,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:53:55,649 INFO L225 Difference]: With dead ends: 30739 [2023-12-02 16:53:55,649 INFO L226 Difference]: Without dead ends: 30624 [2023-12-02 16:53:55,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:53:55,649 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 406 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:53:55,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 983 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:53:55,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30624 states. [2023-12-02 16:53:56,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30624 to 15867. [2023-12-02 16:53:56,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15867 states, 15866 states have (on average 3.9725198537753688) internal successors, (63028), 15866 states have internal predecessors, (63028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:56,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15867 states to 15867 states and 63028 transitions. [2023-12-02 16:53:56,073 INFO L78 Accepts]: Start accepts. Automaton has 15867 states and 63028 transitions. Word has length 58 [2023-12-02 16:53:56,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:53:56,073 INFO L495 AbstractCegarLoop]: Abstraction has 15867 states and 63028 transitions. [2023-12-02 16:53:56,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:56,073 INFO L276 IsEmpty]: Start isEmpty. Operand 15867 states and 63028 transitions. [2023-12-02 16:53:56,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:53:56,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:53:56,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:53:56,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-12-02 16:53:56,098 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:53:56,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:53:56,098 INFO L85 PathProgramCache]: Analyzing trace with hash -79632858, now seen corresponding path program 68 times [2023-12-02 16:53:56,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:53:56,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137843917] [2023-12-02 16:53:56,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:56,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:53:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:57,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:53:57,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:53:57,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137843917] [2023-12-02 16:53:57,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137843917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:53:57,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:53:57,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:53:57,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942696825] [2023-12-02 16:53:57,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:53:57,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:53:57,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:53:57,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:53:57,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:53:57,520 INFO L87 Difference]: Start difference. First operand 15867 states and 63028 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:59,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:53:59,260 INFO L93 Difference]: Finished difference Result 30622 states and 116640 transitions. [2023-12-02 16:53:59,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:53:59,260 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:53:59,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:53:59,342 INFO L225 Difference]: With dead ends: 30622 [2023-12-02 16:53:59,342 INFO L226 Difference]: Without dead ends: 30366 [2023-12-02 16:53:59,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:53:59,343 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 378 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:53:59,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 969 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:53:59,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30366 states. [2023-12-02 16:53:59,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30366 to 15747. [2023-12-02 16:53:59,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15747 states, 15746 states have (on average 3.9782801981455607) internal successors, (62642), 15746 states have internal predecessors, (62642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:59,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15747 states to 15747 states and 62642 transitions. [2023-12-02 16:53:59,804 INFO L78 Accepts]: Start accepts. Automaton has 15747 states and 62642 transitions. Word has length 58 [2023-12-02 16:53:59,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:53:59,804 INFO L495 AbstractCegarLoop]: Abstraction has 15747 states and 62642 transitions. [2023-12-02 16:53:59,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:53:59,804 INFO L276 IsEmpty]: Start isEmpty. Operand 15747 states and 62642 transitions. [2023-12-02 16:53:59,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:53:59,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:53:59,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:53:59,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-12-02 16:53:59,830 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:53:59,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:53:59,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1873140476, now seen corresponding path program 69 times [2023-12-02 16:53:59,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:53:59,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884430923] [2023-12-02 16:53:59,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:59,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:53:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:01,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:01,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:01,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884430923] [2023-12-02 16:54:01,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884430923] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:01,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:01,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:54:01,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407623370] [2023-12-02 16:54:01,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:01,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:54:01,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:01,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:54:01,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:54:01,396 INFO L87 Difference]: Start difference. First operand 15747 states and 62642 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:03,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:03,327 INFO L93 Difference]: Finished difference Result 31363 states and 118980 transitions. [2023-12-02 16:54:03,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:54:03,327 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:54:03,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:03,416 INFO L225 Difference]: With dead ends: 31363 [2023-12-02 16:54:03,416 INFO L226 Difference]: Without dead ends: 31230 [2023-12-02 16:54:03,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:54:03,416 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 480 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:03,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 981 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1465 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:54:03,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31230 states. [2023-12-02 16:54:03,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31230 to 15861. [2023-12-02 16:54:03,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15861 states, 15860 states have (on average 3.976986128625473) internal successors, (63075), 15860 states have internal predecessors, (63075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:03,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15861 states to 15861 states and 63075 transitions. [2023-12-02 16:54:03,984 INFO L78 Accepts]: Start accepts. Automaton has 15861 states and 63075 transitions. Word has length 58 [2023-12-02 16:54:03,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:03,985 INFO L495 AbstractCegarLoop]: Abstraction has 15861 states and 63075 transitions. [2023-12-02 16:54:03,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:03,985 INFO L276 IsEmpty]: Start isEmpty. Operand 15861 states and 63075 transitions. [2023-12-02 16:54:04,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:54:04,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:04,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:04,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-12-02 16:54:04,012 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:54:04,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:04,012 INFO L85 PathProgramCache]: Analyzing trace with hash 197222116, now seen corresponding path program 70 times [2023-12-02 16:54:04,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:04,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668261669] [2023-12-02 16:54:04,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:04,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:05,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:05,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:05,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668261669] [2023-12-02 16:54:05,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668261669] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:05,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:05,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:54:05,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108929256] [2023-12-02 16:54:05,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:05,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:54:05,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:05,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:54:05,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:54:05,426 INFO L87 Difference]: Start difference. First operand 15861 states and 63075 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:07,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:07,190 INFO L93 Difference]: Finished difference Result 31228 states and 118617 transitions. [2023-12-02 16:54:07,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:54:07,191 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:54:07,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:07,276 INFO L225 Difference]: With dead ends: 31228 [2023-12-02 16:54:07,277 INFO L226 Difference]: Without dead ends: 31101 [2023-12-02 16:54:07,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:54:07,277 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 491 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:07,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 927 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:54:07,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31101 states. [2023-12-02 16:54:07,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31101 to 15849. [2023-12-02 16:54:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15849 states, 15848 states have (on average 3.977221100454316) internal successors, (63031), 15848 states have internal predecessors, (63031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:07,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15849 states to 15849 states and 63031 transitions. [2023-12-02 16:54:07,807 INFO L78 Accepts]: Start accepts. Automaton has 15849 states and 63031 transitions. Word has length 58 [2023-12-02 16:54:07,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:07,807 INFO L495 AbstractCegarLoop]: Abstraction has 15849 states and 63031 transitions. [2023-12-02 16:54:07,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:07,808 INFO L276 IsEmpty]: Start isEmpty. Operand 15849 states and 63031 transitions. [2023-12-02 16:54:07,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:54:07,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:07,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:07,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-12-02 16:54:07,839 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:54:07,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:07,839 INFO L85 PathProgramCache]: Analyzing trace with hash 233972486, now seen corresponding path program 71 times [2023-12-02 16:54:07,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:07,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651608046] [2023-12-02 16:54:07,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:07,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:09,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:09,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:09,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651608046] [2023-12-02 16:54:09,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651608046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:09,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:09,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:54:09,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521386342] [2023-12-02 16:54:09,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:09,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:54:09,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:09,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:54:09,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:54:09,364 INFO L87 Difference]: Start difference. First operand 15849 states and 63031 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:11,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:11,169 INFO L93 Difference]: Finished difference Result 31360 states and 119005 transitions. [2023-12-02 16:54:11,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:54:11,169 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:54:11,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:11,261 INFO L225 Difference]: With dead ends: 31360 [2023-12-02 16:54:11,261 INFO L226 Difference]: Without dead ends: 31065 [2023-12-02 16:54:11,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:54:11,261 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 490 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:11,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 905 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:54:11,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31065 states. [2023-12-02 16:54:11,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31065 to 15813. [2023-12-02 16:54:11,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15813 states, 15812 states have (on average 3.977548697192006) internal successors, (62893), 15812 states have internal predecessors, (62893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:11,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15813 states to 15813 states and 62893 transitions. [2023-12-02 16:54:11,753 INFO L78 Accepts]: Start accepts. Automaton has 15813 states and 62893 transitions. Word has length 58 [2023-12-02 16:54:11,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:11,753 INFO L495 AbstractCegarLoop]: Abstraction has 15813 states and 62893 transitions. [2023-12-02 16:54:11,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:11,754 INFO L276 IsEmpty]: Start isEmpty. Operand 15813 states and 62893 transitions. [2023-12-02 16:54:11,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:54:11,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:11,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:11,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-12-02 16:54:11,780 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:54:11,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:11,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1217560794, now seen corresponding path program 72 times [2023-12-02 16:54:11,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:11,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200675908] [2023-12-02 16:54:11,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:11,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:13,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:13,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:13,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200675908] [2023-12-02 16:54:13,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200675908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:13,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:13,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:54:13,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893455539] [2023-12-02 16:54:13,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:13,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:54:13,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:13,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:54:13,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:54:13,019 INFO L87 Difference]: Start difference. First operand 15813 states and 62893 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:14,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:14,774 INFO L93 Difference]: Finished difference Result 31546 states and 119457 transitions. [2023-12-02 16:54:14,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:54:14,774 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:54:14,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:14,868 INFO L225 Difference]: With dead ends: 31546 [2023-12-02 16:54:14,868 INFO L226 Difference]: Without dead ends: 31413 [2023-12-02 16:54:14,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:54:14,868 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 537 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:14,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 905 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:54:14,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31413 states. [2023-12-02 16:54:15,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31413 to 15831. [2023-12-02 16:54:15,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15831 states, 15830 states have (on average 3.9766266582438408) internal successors, (62950), 15830 states have internal predecessors, (62950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:15,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15831 states to 15831 states and 62950 transitions. [2023-12-02 16:54:15,372 INFO L78 Accepts]: Start accepts. Automaton has 15831 states and 62950 transitions. Word has length 58 [2023-12-02 16:54:15,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:15,372 INFO L495 AbstractCegarLoop]: Abstraction has 15831 states and 62950 transitions. [2023-12-02 16:54:15,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:15,372 INFO L276 IsEmpty]: Start isEmpty. Operand 15831 states and 62950 transitions. [2023-12-02 16:54:15,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:54:15,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:15,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:15,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-12-02 16:54:15,397 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:54:15,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:15,397 INFO L85 PathProgramCache]: Analyzing trace with hash 852801798, now seen corresponding path program 73 times [2023-12-02 16:54:15,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:15,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464514732] [2023-12-02 16:54:15,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:15,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:16,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:16,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:16,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464514732] [2023-12-02 16:54:16,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464514732] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:16,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:16,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:54:16,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933313040] [2023-12-02 16:54:16,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:16,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:54:16,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:16,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:54:16,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:54:16,681 INFO L87 Difference]: Start difference. First operand 15831 states and 62950 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:18,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:18,425 INFO L93 Difference]: Finished difference Result 31528 states and 119394 transitions. [2023-12-02 16:54:18,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:54:18,426 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:54:18,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:18,503 INFO L225 Difference]: With dead ends: 31528 [2023-12-02 16:54:18,503 INFO L226 Difference]: Without dead ends: 31401 [2023-12-02 16:54:18,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:54:18,503 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 494 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:18,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 963 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:54:18,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31401 states. [2023-12-02 16:54:18,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31401 to 15819. [2023-12-02 16:54:18,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15819 states, 15818 states have (on average 3.9772411177139966) internal successors, (62912), 15818 states have internal predecessors, (62912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:18,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15819 states to 15819 states and 62912 transitions. [2023-12-02 16:54:18,928 INFO L78 Accepts]: Start accepts. Automaton has 15819 states and 62912 transitions. Word has length 58 [2023-12-02 16:54:18,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:18,929 INFO L495 AbstractCegarLoop]: Abstraction has 15819 states and 62912 transitions. [2023-12-02 16:54:18,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:18,929 INFO L276 IsEmpty]: Start isEmpty. Operand 15819 states and 62912 transitions. [2023-12-02 16:54:18,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:54:18,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:18,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:18,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-12-02 16:54:18,953 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:54:18,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:18,954 INFO L85 PathProgramCache]: Analyzing trace with hash 5576964, now seen corresponding path program 74 times [2023-12-02 16:54:18,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:18,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610726447] [2023-12-02 16:54:18,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:18,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:20,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:20,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:20,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610726447] [2023-12-02 16:54:20,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610726447] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:20,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:20,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:54:20,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136289644] [2023-12-02 16:54:20,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:20,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:54:20,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:20,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:54:20,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:54:20,244 INFO L87 Difference]: Start difference. First operand 15819 states and 62912 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:21,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:21,877 INFO L93 Difference]: Finished difference Result 31558 states and 119487 transitions. [2023-12-02 16:54:21,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:54:21,877 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:54:21,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:21,960 INFO L225 Difference]: With dead ends: 31558 [2023-12-02 16:54:21,960 INFO L226 Difference]: Without dead ends: 31425 [2023-12-02 16:54:21,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:54:21,960 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 501 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:21,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 919 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:54:22,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31425 states. [2023-12-02 16:54:22,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31425 to 15840. [2023-12-02 16:54:22,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15840 states, 15839 states have (on average 3.975314098112255) internal successors, (62965), 15839 states have internal predecessors, (62965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:22,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15840 states to 15840 states and 62965 transitions. [2023-12-02 16:54:22,449 INFO L78 Accepts]: Start accepts. Automaton has 15840 states and 62965 transitions. Word has length 58 [2023-12-02 16:54:22,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:22,449 INFO L495 AbstractCegarLoop]: Abstraction has 15840 states and 62965 transitions. [2023-12-02 16:54:22,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:22,449 INFO L276 IsEmpty]: Start isEmpty. Operand 15840 states and 62965 transitions. [2023-12-02 16:54:22,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:54:22,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:22,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:22,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-12-02 16:54:22,475 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:54:22,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:22,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1037367450, now seen corresponding path program 75 times [2023-12-02 16:54:22,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:22,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141381297] [2023-12-02 16:54:22,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:22,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:23,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:23,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:23,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141381297] [2023-12-02 16:54:23,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141381297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:23,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:23,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:54:23,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562753991] [2023-12-02 16:54:23,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:23,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:54:23,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:23,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:54:23,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:54:23,893 INFO L87 Difference]: Start difference. First operand 15840 states and 62965 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:25,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:25,561 INFO L93 Difference]: Finished difference Result 31468 states and 119248 transitions. [2023-12-02 16:54:25,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:54:25,561 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:54:25,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:25,648 INFO L225 Difference]: With dead ends: 31468 [2023-12-02 16:54:25,648 INFO L226 Difference]: Without dead ends: 31311 [2023-12-02 16:54:25,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:54:25,648 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 472 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:25,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 926 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:54:25,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31311 states. [2023-12-02 16:54:26,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31311 to 15819. [2023-12-02 16:54:26,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15819 states, 15818 states have (on average 3.97686180300923) internal successors, (62906), 15818 states have internal predecessors, (62906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:26,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15819 states to 15819 states and 62906 transitions. [2023-12-02 16:54:26,153 INFO L78 Accepts]: Start accepts. Automaton has 15819 states and 62906 transitions. Word has length 58 [2023-12-02 16:54:26,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:26,153 INFO L495 AbstractCegarLoop]: Abstraction has 15819 states and 62906 transitions. [2023-12-02 16:54:26,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:26,153 INFO L276 IsEmpty]: Start isEmpty. Operand 15819 states and 62906 transitions. [2023-12-02 16:54:26,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:54:26,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:26,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:26,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2023-12-02 16:54:26,183 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:54:26,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:26,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1413703964, now seen corresponding path program 76 times [2023-12-02 16:54:26,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:26,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578361814] [2023-12-02 16:54:26,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:26,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:27,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:27,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:27,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578361814] [2023-12-02 16:54:27,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578361814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:27,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:27,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:54:27,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261551201] [2023-12-02 16:54:27,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:27,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:54:27,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:27,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:54:27,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:54:27,558 INFO L87 Difference]: Start difference. First operand 15819 states and 62906 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:29,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:29,300 INFO L93 Difference]: Finished difference Result 31357 states and 118923 transitions. [2023-12-02 16:54:29,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:54:29,301 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:54:29,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:29,385 INFO L225 Difference]: With dead ends: 31357 [2023-12-02 16:54:29,386 INFO L226 Difference]: Without dead ends: 31242 [2023-12-02 16:54:29,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:54:29,386 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 464 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:29,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 948 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:54:29,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31242 states. [2023-12-02 16:54:29,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31242 to 15831. [2023-12-02 16:54:29,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15831 states, 15830 states have (on average 3.9758686039166142) internal successors, (62938), 15830 states have internal predecessors, (62938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:29,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15831 states to 15831 states and 62938 transitions. [2023-12-02 16:54:29,885 INFO L78 Accepts]: Start accepts. Automaton has 15831 states and 62938 transitions. Word has length 58 [2023-12-02 16:54:29,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:29,886 INFO L495 AbstractCegarLoop]: Abstraction has 15831 states and 62938 transitions. [2023-12-02 16:54:29,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:29,886 INFO L276 IsEmpty]: Start isEmpty. Operand 15831 states and 62938 transitions. [2023-12-02 16:54:29,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:54:29,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:29,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:29,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2023-12-02 16:54:29,918 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:54:29,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:29,919 INFO L85 PathProgramCache]: Analyzing trace with hash 11225414, now seen corresponding path program 77 times [2023-12-02 16:54:29,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:29,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352533921] [2023-12-02 16:54:29,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:29,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:31,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:31,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:31,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352533921] [2023-12-02 16:54:31,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352533921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:31,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:31,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:54:31,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143242019] [2023-12-02 16:54:31,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:31,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:54:31,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:31,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:54:31,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:54:31,195 INFO L87 Difference]: Start difference. First operand 15831 states and 62938 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:32,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:32,797 INFO L93 Difference]: Finished difference Result 31285 states and 118744 transitions. [2023-12-02 16:54:32,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:54:32,797 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:54:32,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:32,887 INFO L225 Difference]: With dead ends: 31285 [2023-12-02 16:54:32,888 INFO L226 Difference]: Without dead ends: 31131 [2023-12-02 16:54:32,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:54:32,888 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 507 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:32,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 852 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:54:32,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31131 states. [2023-12-02 16:54:33,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31131 to 15813. [2023-12-02 16:54:33,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15813 states, 15812 states have (on average 3.9771692385529978) internal successors, (62887), 15812 states have internal predecessors, (62887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:33,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15813 states to 15813 states and 62887 transitions. [2023-12-02 16:54:33,388 INFO L78 Accepts]: Start accepts. Automaton has 15813 states and 62887 transitions. Word has length 58 [2023-12-02 16:54:33,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:33,388 INFO L495 AbstractCegarLoop]: Abstraction has 15813 states and 62887 transitions. [2023-12-02 16:54:33,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:33,388 INFO L276 IsEmpty]: Start isEmpty. Operand 15813 states and 62887 transitions. [2023-12-02 16:54:33,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:54:33,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:33,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:33,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2023-12-02 16:54:33,419 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:54:33,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:33,419 INFO L85 PathProgramCache]: Analyzing trace with hash -503462680, now seen corresponding path program 78 times [2023-12-02 16:54:33,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:33,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229871637] [2023-12-02 16:54:33,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:33,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:34,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:34,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:34,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229871637] [2023-12-02 16:54:34,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229871637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:34,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:34,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:54:34,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032784604] [2023-12-02 16:54:34,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:34,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:54:34,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:34,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:54:34,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:54:34,716 INFO L87 Difference]: Start difference. First operand 15813 states and 62887 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:36,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:36,356 INFO L93 Difference]: Finished difference Result 31588 states and 119641 transitions. [2023-12-02 16:54:36,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:54:36,357 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:54:36,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:36,445 INFO L225 Difference]: With dead ends: 31588 [2023-12-02 16:54:36,445 INFO L226 Difference]: Without dead ends: 31329 [2023-12-02 16:54:36,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:54:36,445 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 482 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:36,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 921 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:54:36,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31329 states. [2023-12-02 16:54:36,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31329 to 15876. [2023-12-02 16:54:36,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15876 states, 15875 states have (on average 3.9714015748031497) internal successors, (63046), 15875 states have internal predecessors, (63046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:36,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15876 states to 15876 states and 63046 transitions. [2023-12-02 16:54:36,938 INFO L78 Accepts]: Start accepts. Automaton has 15876 states and 63046 transitions. Word has length 58 [2023-12-02 16:54:36,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:36,938 INFO L495 AbstractCegarLoop]: Abstraction has 15876 states and 63046 transitions. [2023-12-02 16:54:36,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:36,938 INFO L276 IsEmpty]: Start isEmpty. Operand 15876 states and 63046 transitions. [2023-12-02 16:54:36,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:54:36,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:36,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:36,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2023-12-02 16:54:36,966 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:54:36,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:36,966 INFO L85 PathProgramCache]: Analyzing trace with hash 2011537030, now seen corresponding path program 79 times [2023-12-02 16:54:36,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:36,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351466260] [2023-12-02 16:54:36,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:36,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:38,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:38,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:38,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351466260] [2023-12-02 16:54:38,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351466260] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:38,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:38,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:54:38,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483032616] [2023-12-02 16:54:38,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:38,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:54:38,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:38,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:54:38,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:54:38,297 INFO L87 Difference]: Start difference. First operand 15876 states and 63046 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:39,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:39,932 INFO L93 Difference]: Finished difference Result 31486 states and 119277 transitions. [2023-12-02 16:54:39,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:54:39,933 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:54:39,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:40,023 INFO L225 Difference]: With dead ends: 31486 [2023-12-02 16:54:40,023 INFO L226 Difference]: Without dead ends: 31353 [2023-12-02 16:54:40,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:54:40,024 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 481 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:40,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 920 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:54:40,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31353 states. [2023-12-02 16:54:40,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31353 to 15897. [2023-12-02 16:54:40,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15897 states, 15896 states have (on average 3.969489179667841) internal successors, (63099), 15896 states have internal predecessors, (63099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:40,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15897 states to 15897 states and 63099 transitions. [2023-12-02 16:54:40,510 INFO L78 Accepts]: Start accepts. Automaton has 15897 states and 63099 transitions. Word has length 58 [2023-12-02 16:54:40,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:40,510 INFO L495 AbstractCegarLoop]: Abstraction has 15897 states and 63099 transitions. [2023-12-02 16:54:40,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:40,510 INFO L276 IsEmpty]: Start isEmpty. Operand 15897 states and 63099 transitions. [2023-12-02 16:54:40,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:54:40,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:40,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:40,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2023-12-02 16:54:40,538 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:54:40,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:40,538 INFO L85 PathProgramCache]: Analyzing trace with hash 968592616, now seen corresponding path program 80 times [2023-12-02 16:54:40,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:40,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993315925] [2023-12-02 16:54:40,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:40,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:41,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:41,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993315925] [2023-12-02 16:54:41,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993315925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:41,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:41,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:54:41,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348863592] [2023-12-02 16:54:41,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:41,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:54:41,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:41,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:54:41,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:54:41,807 INFO L87 Difference]: Start difference. First operand 15897 states and 63099 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:43,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:43,524 INFO L93 Difference]: Finished difference Result 31351 states and 118905 transitions. [2023-12-02 16:54:43,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:54:43,524 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:54:43,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:43,615 INFO L225 Difference]: With dead ends: 31351 [2023-12-02 16:54:43,615 INFO L226 Difference]: Without dead ends: 31113 [2023-12-02 16:54:43,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:54:43,616 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 426 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:43,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 924 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:54:43,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31113 states. [2023-12-02 16:54:44,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31113 to 15795. [2023-12-02 16:54:44,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15795 states, 15794 states have (on average 3.9773331644928454) internal successors, (62818), 15794 states have internal predecessors, (62818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:44,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15795 states to 15795 states and 62818 transitions. [2023-12-02 16:54:44,216 INFO L78 Accepts]: Start accepts. Automaton has 15795 states and 62818 transitions. Word has length 58 [2023-12-02 16:54:44,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:44,216 INFO L495 AbstractCegarLoop]: Abstraction has 15795 states and 62818 transitions. [2023-12-02 16:54:44,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:44,216 INFO L276 IsEmpty]: Start isEmpty. Operand 15795 states and 62818 transitions. [2023-12-02 16:54:44,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:54:44,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:44,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:44,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2023-12-02 16:54:44,244 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:54:44,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:44,244 INFO L85 PathProgramCache]: Analyzing trace with hash -407774666, now seen corresponding path program 81 times [2023-12-02 16:54:44,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:44,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167755416] [2023-12-02 16:54:44,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:44,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:45,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:45,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:45,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167755416] [2023-12-02 16:54:45,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167755416] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:45,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:45,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:54:45,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553502034] [2023-12-02 16:54:45,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:45,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:54:45,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:45,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:54:45,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:54:45,622 INFO L87 Difference]: Start difference. First operand 15795 states and 62818 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:47,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:47,473 INFO L93 Difference]: Finished difference Result 31507 states and 119394 transitions. [2023-12-02 16:54:47,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:54:47,474 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:54:47,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:47,574 INFO L225 Difference]: With dead ends: 31507 [2023-12-02 16:54:47,574 INFO L226 Difference]: Without dead ends: 31374 [2023-12-02 16:54:47,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:54:47,574 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 464 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:47,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 921 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:54:47,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31374 states. [2023-12-02 16:54:48,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31374 to 15825. [2023-12-02 16:54:48,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15825 states, 15824 states have (on average 3.9765546006066734) internal successors, (62925), 15824 states have internal predecessors, (62925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:48,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15825 states to 15825 states and 62925 transitions. [2023-12-02 16:54:48,145 INFO L78 Accepts]: Start accepts. Automaton has 15825 states and 62925 transitions. Word has length 58 [2023-12-02 16:54:48,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:48,145 INFO L495 AbstractCegarLoop]: Abstraction has 15825 states and 62925 transitions. [2023-12-02 16:54:48,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:48,145 INFO L276 IsEmpty]: Start isEmpty. Operand 15825 states and 62925 transitions. [2023-12-02 16:54:48,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:54:48,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:48,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:48,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2023-12-02 16:54:48,179 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:54:48,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:48,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1662587926, now seen corresponding path program 82 times [2023-12-02 16:54:48,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:48,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130133868] [2023-12-02 16:54:48,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:48,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:49,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:49,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:49,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130133868] [2023-12-02 16:54:49,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130133868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:49,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:49,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:54:49,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755238199] [2023-12-02 16:54:49,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:49,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:54:49,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:49,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:54:49,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:54:49,651 INFO L87 Difference]: Start difference. First operand 15825 states and 62925 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:51,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:51,273 INFO L93 Difference]: Finished difference Result 31489 states and 119331 transitions. [2023-12-02 16:54:51,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:54:51,274 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:54:51,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:51,362 INFO L225 Difference]: With dead ends: 31489 [2023-12-02 16:54:51,362 INFO L226 Difference]: Without dead ends: 31362 [2023-12-02 16:54:51,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:54:51,362 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 494 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:51,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 934 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:54:51,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31362 states. [2023-12-02 16:54:51,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31362 to 15813. [2023-12-02 16:54:51,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15813 states, 15812 states have (on average 3.9771692385529978) internal successors, (62887), 15812 states have internal predecessors, (62887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:51,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15813 states to 15813 states and 62887 transitions. [2023-12-02 16:54:51,884 INFO L78 Accepts]: Start accepts. Automaton has 15813 states and 62887 transitions. Word has length 58 [2023-12-02 16:54:51,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:51,884 INFO L495 AbstractCegarLoop]: Abstraction has 15813 states and 62887 transitions. [2023-12-02 16:54:51,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:51,884 INFO L276 IsEmpty]: Start isEmpty. Operand 15813 states and 62887 transitions. [2023-12-02 16:54:51,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:54:51,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:51,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:51,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2023-12-02 16:54:51,912 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:54:51,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:51,913 INFO L85 PathProgramCache]: Analyzing trace with hash 815363092, now seen corresponding path program 83 times [2023-12-02 16:54:51,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:51,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505530940] [2023-12-02 16:54:51,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:51,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:53,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:53,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:53,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505530940] [2023-12-02 16:54:53,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505530940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:53,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:53,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:54:53,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463279981] [2023-12-02 16:54:53,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:53,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:54:53,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:53,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:54:53,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:54:53,129 INFO L87 Difference]: Start difference. First operand 15813 states and 62887 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:54,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:54,729 INFO L93 Difference]: Finished difference Result 31654 states and 119775 transitions. [2023-12-02 16:54:54,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:54:54,730 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:54:54,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:54,827 INFO L225 Difference]: With dead ends: 31654 [2023-12-02 16:54:54,828 INFO L226 Difference]: Without dead ends: 31521 [2023-12-02 16:54:54,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:54:54,828 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 492 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:54,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 879 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:54:54,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31521 states. [2023-12-02 16:54:55,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31521 to 15834. [2023-12-02 16:54:55,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15834 states, 15833 states have (on average 3.975241584033348) internal successors, (62940), 15833 states have internal predecessors, (62940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:55,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15834 states to 15834 states and 62940 transitions. [2023-12-02 16:54:55,349 INFO L78 Accepts]: Start accepts. Automaton has 15834 states and 62940 transitions. Word has length 58 [2023-12-02 16:54:55,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:55,349 INFO L495 AbstractCegarLoop]: Abstraction has 15834 states and 62940 transitions. [2023-12-02 16:54:55,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:55,349 INFO L276 IsEmpty]: Start isEmpty. Operand 15834 states and 62940 transitions. [2023-12-02 16:54:55,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:54:55,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:55,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:55,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2023-12-02 16:54:55,380 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:54:55,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:55,380 INFO L85 PathProgramCache]: Analyzing trace with hash -227581322, now seen corresponding path program 84 times [2023-12-02 16:54:55,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:55,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165629932] [2023-12-02 16:54:55,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:55,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:56,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:56,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165629932] [2023-12-02 16:54:56,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165629932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:56,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:56,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:54:56,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758619109] [2023-12-02 16:54:56,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:56,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:54:56,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:56,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:54:56,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:54:56,881 INFO L87 Difference]: Start difference. First operand 15834 states and 62940 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:58,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:58,760 INFO L93 Difference]: Finished difference Result 31564 states and 119536 transitions. [2023-12-02 16:54:58,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:54:58,761 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:54:58,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:58,858 INFO L225 Difference]: With dead ends: 31564 [2023-12-02 16:54:58,858 INFO L226 Difference]: Without dead ends: 31407 [2023-12-02 16:54:58,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:54:58,858 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 471 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:58,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 888 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:54:58,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31407 states. [2023-12-02 16:54:59,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31407 to 15813. [2023-12-02 16:54:59,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15813 states, 15812 states have (on average 3.9767897799139895) internal successors, (62881), 15812 states have internal predecessors, (62881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:59,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15813 states to 15813 states and 62881 transitions. [2023-12-02 16:54:59,297 INFO L78 Accepts]: Start accepts. Automaton has 15813 states and 62881 transitions. Word has length 58 [2023-12-02 16:54:59,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:59,297 INFO L495 AbstractCegarLoop]: Abstraction has 15813 states and 62881 transitions. [2023-12-02 16:54:59,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:59,297 INFO L276 IsEmpty]: Start isEmpty. Operand 15813 states and 62881 transitions. [2023-12-02 16:54:59,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:54:59,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:59,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:59,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2023-12-02 16:54:59,321 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:54:59,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:59,322 INFO L85 PathProgramCache]: Analyzing trace with hash -603917836, now seen corresponding path program 85 times [2023-12-02 16:54:59,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:59,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343453918] [2023-12-02 16:54:59,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:59,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:00,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:55:00,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:55:00,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343453918] [2023-12-02 16:55:00,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343453918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:00,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:00,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:55:00,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161644095] [2023-12-02 16:55:00,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:00,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:55:00,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:55:00,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:55:00,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:55:00,537 INFO L87 Difference]: Start difference. First operand 15813 states and 62881 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:02,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:02,052 INFO L93 Difference]: Finished difference Result 31627 states and 119688 transitions. [2023-12-02 16:55:02,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:55:02,052 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:55:02,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:02,130 INFO L225 Difference]: With dead ends: 31627 [2023-12-02 16:55:02,130 INFO L226 Difference]: Without dead ends: 31512 [2023-12-02 16:55:02,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:55:02,130 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 519 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:02,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 876 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:55:02,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31512 states. [2023-12-02 16:55:02,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31512 to 15825. [2023-12-02 16:55:02,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15825 states, 15824 states have (on average 3.9757962588473204) internal successors, (62913), 15824 states have internal predecessors, (62913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:02,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15825 states to 15825 states and 62913 transitions. [2023-12-02 16:55:02,558 INFO L78 Accepts]: Start accepts. Automaton has 15825 states and 62913 transitions. Word has length 58 [2023-12-02 16:55:02,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:02,558 INFO L495 AbstractCegarLoop]: Abstraction has 15825 states and 62913 transitions. [2023-12-02 16:55:02,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:02,558 INFO L276 IsEmpty]: Start isEmpty. Operand 15825 states and 62913 transitions. [2023-12-02 16:55:02,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:55:02,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:02,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:55:02,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2023-12-02 16:55:02,582 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:55:02,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:02,583 INFO L85 PathProgramCache]: Analyzing trace with hash 821011542, now seen corresponding path program 86 times [2023-12-02 16:55:02,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:55:02,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008313906] [2023-12-02 16:55:02,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:02,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:55:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:55:03,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:55:03,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008313906] [2023-12-02 16:55:03,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008313906] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:03,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:03,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:55:03,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334121321] [2023-12-02 16:55:03,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:03,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:55:03,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:55:03,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:55:03,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:55:03,847 INFO L87 Difference]: Start difference. First operand 15825 states and 62913 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:05,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:05,353 INFO L93 Difference]: Finished difference Result 31555 states and 119509 transitions. [2023-12-02 16:55:05,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:55:05,353 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:55:05,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:05,431 INFO L225 Difference]: With dead ends: 31555 [2023-12-02 16:55:05,431 INFO L226 Difference]: Without dead ends: 31401 [2023-12-02 16:55:05,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:55:05,431 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 459 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:05,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 920 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:55:05,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31401 states. [2023-12-02 16:55:05,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31401 to 15807. [2023-12-02 16:55:05,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15807 states, 15806 states have (on average 3.977097304820954) internal successors, (62862), 15806 states have internal predecessors, (62862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:05,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15807 states to 15807 states and 62862 transitions. [2023-12-02 16:55:05,857 INFO L78 Accepts]: Start accepts. Automaton has 15807 states and 62862 transitions. Word has length 58 [2023-12-02 16:55:05,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:05,857 INFO L495 AbstractCegarLoop]: Abstraction has 15807 states and 62862 transitions. [2023-12-02 16:55:05,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:05,858 INFO L276 IsEmpty]: Start isEmpty. Operand 15807 states and 62862 transitions. [2023-12-02 16:55:05,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:55:05,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:05,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:55:05,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2023-12-02 16:55:05,882 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:55:05,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:05,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1600519302, now seen corresponding path program 87 times [2023-12-02 16:55:05,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:55:05,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909980928] [2023-12-02 16:55:05,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:05,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:55:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:07,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:55:07,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:55:07,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909980928] [2023-12-02 16:55:07,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909980928] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:07,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:07,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:55:07,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749551535] [2023-12-02 16:55:07,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:07,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:55:07,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:55:07,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:55:07,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:55:07,196 INFO L87 Difference]: Start difference. First operand 15807 states and 62862 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:08,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:08,715 INFO L93 Difference]: Finished difference Result 31624 states and 119739 transitions. [2023-12-02 16:55:08,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:55:08,716 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:55:08,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:08,793 INFO L225 Difference]: With dead ends: 31624 [2023-12-02 16:55:08,793 INFO L226 Difference]: Without dead ends: 31491 [2023-12-02 16:55:08,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=336, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:55:08,794 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 486 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:08,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 927 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:55:08,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31491 states. [2023-12-02 16:55:09,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31491 to 15870. [2023-12-02 16:55:09,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15870 states, 15869 states have (on average 3.9739744155271284) internal successors, (63063), 15869 states have internal predecessors, (63063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:09,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15870 states to 15870 states and 63063 transitions. [2023-12-02 16:55:09,228 INFO L78 Accepts]: Start accepts. Automaton has 15870 states and 63063 transitions. Word has length 58 [2023-12-02 16:55:09,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:09,229 INFO L495 AbstractCegarLoop]: Abstraction has 15870 states and 63063 transitions. [2023-12-02 16:55:09,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:09,229 INFO L276 IsEmpty]: Start isEmpty. Operand 15870 states and 63063 transitions. [2023-12-02 16:55:09,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:55:09,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:09,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:55:09,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2023-12-02 16:55:09,256 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:55:09,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:09,257 INFO L85 PathProgramCache]: Analyzing trace with hash 557574888, now seen corresponding path program 88 times [2023-12-02 16:55:09,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:55:09,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479137608] [2023-12-02 16:55:09,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:09,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:55:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:10,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:55:10,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:55:10,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479137608] [2023-12-02 16:55:10,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479137608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:10,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:10,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:55:10,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310413409] [2023-12-02 16:55:10,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:10,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:55:10,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:55:10,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:55:10,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:55:10,789 INFO L87 Difference]: Start difference. First operand 15870 states and 63063 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:12,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:12,478 INFO L93 Difference]: Finished difference Result 31627 states and 119724 transitions. [2023-12-02 16:55:12,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:55:12,479 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:55:12,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:12,568 INFO L225 Difference]: With dead ends: 31627 [2023-12-02 16:55:12,568 INFO L226 Difference]: Without dead ends: 31470 [2023-12-02 16:55:12,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:55:12,569 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 430 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:12,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 959 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:55:12,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31470 states. [2023-12-02 16:55:12,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31470 to 15849. [2023-12-02 16:55:12,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15849 states, 15848 states have (on average 3.974570923775871) internal successors, (62989), 15848 states have internal predecessors, (62989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:13,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15849 states to 15849 states and 62989 transitions. [2023-12-02 16:55:13,048 INFO L78 Accepts]: Start accepts. Automaton has 15849 states and 62989 transitions. Word has length 58 [2023-12-02 16:55:13,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:13,049 INFO L495 AbstractCegarLoop]: Abstraction has 15849 states and 62989 transitions. [2023-12-02 16:55:13,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:13,049 INFO L276 IsEmpty]: Start isEmpty. Operand 15849 states and 62989 transitions. [2023-12-02 16:55:13,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:55:13,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:13,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:55:13,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2023-12-02 16:55:13,077 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:55:13,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:13,078 INFO L85 PathProgramCache]: Analyzing trace with hash -169619946, now seen corresponding path program 89 times [2023-12-02 16:55:13,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:55:13,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595453972] [2023-12-02 16:55:13,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:13,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:55:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:14,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:55:14,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:55:14,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595453972] [2023-12-02 16:55:14,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595453972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:14,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:14,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:55:14,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341193177] [2023-12-02 16:55:14,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:14,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:55:14,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:55:14,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:55:14,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:55:14,520 INFO L87 Difference]: Start difference. First operand 15849 states and 62989 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:16,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:16,145 INFO L93 Difference]: Finished difference Result 31558 states and 119559 transitions. [2023-12-02 16:55:16,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:55:16,146 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:55:16,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:16,233 INFO L225 Difference]: With dead ends: 31558 [2023-12-02 16:55:16,233 INFO L226 Difference]: Without dead ends: 31290 [2023-12-02 16:55:16,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=334, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:55:16,233 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 476 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:16,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 872 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:55:16,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31290 states. [2023-12-02 16:55:16,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31290 to 15807. [2023-12-02 16:55:16,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15807 states, 15806 states have (on average 3.9763380994559028) internal successors, (62850), 15806 states have internal predecessors, (62850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:16,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15807 states to 15807 states and 62850 transitions. [2023-12-02 16:55:16,741 INFO L78 Accepts]: Start accepts. Automaton has 15807 states and 62850 transitions. Word has length 58 [2023-12-02 16:55:16,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:16,741 INFO L495 AbstractCegarLoop]: Abstraction has 15807 states and 62850 transitions. [2023-12-02 16:55:16,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:16,741 INFO L276 IsEmpty]: Start isEmpty. Operand 15807 states and 62850 transitions. [2023-12-02 16:55:16,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:55:16,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:16,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:55:16,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2023-12-02 16:55:16,770 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:55:16,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:16,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1672121210, now seen corresponding path program 90 times [2023-12-02 16:55:16,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:55:16,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341240790] [2023-12-02 16:55:16,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:16,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:55:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:18,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:55:18,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:55:18,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341240790] [2023-12-02 16:55:18,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341240790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:18,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:18,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:55:18,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531159822] [2023-12-02 16:55:18,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:18,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:55:18,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:55:18,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:55:18,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:55:18,116 INFO L87 Difference]: Start difference. First operand 15807 states and 62850 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:19,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:19,851 INFO L93 Difference]: Finished difference Result 31291 states and 118755 transitions. [2023-12-02 16:55:19,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:55:19,852 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:55:19,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:19,938 INFO L225 Difference]: With dead ends: 31291 [2023-12-02 16:55:19,938 INFO L226 Difference]: Without dead ends: 31176 [2023-12-02 16:55:19,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:55:19,938 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 463 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:19,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 909 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:55:19,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31176 states. [2023-12-02 16:55:20,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31176 to 15843. [2023-12-02 16:55:20,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15843 states, 15842 states have (on average 3.974876909481126) internal successors, (62970), 15842 states have internal predecessors, (62970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15843 states to 15843 states and 62970 transitions. [2023-12-02 16:55:20,462 INFO L78 Accepts]: Start accepts. Automaton has 15843 states and 62970 transitions. Word has length 58 [2023-12-02 16:55:20,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:20,462 INFO L495 AbstractCegarLoop]: Abstraction has 15843 states and 62970 transitions. [2023-12-02 16:55:20,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:20,462 INFO L276 IsEmpty]: Start isEmpty. Operand 15843 states and 62970 transitions. [2023-12-02 16:55:20,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:55:20,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:20,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:55:20,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2023-12-02 16:55:20,496 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:55:20,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:20,496 INFO L85 PathProgramCache]: Analyzing trace with hash -247191832, now seen corresponding path program 91 times [2023-12-02 16:55:20,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:55:20,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527359274] [2023-12-02 16:55:20,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:20,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:55:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:21,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:55:21,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:55:21,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527359274] [2023-12-02 16:55:21,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527359274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:21,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:21,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:55:21,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050789278] [2023-12-02 16:55:21,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:21,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:55:21,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:55:21,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:55:21,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:55:21,828 INFO L87 Difference]: Start difference. First operand 15843 states and 62970 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:23,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:23,413 INFO L93 Difference]: Finished difference Result 31312 states and 118800 transitions. [2023-12-02 16:55:23,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:55:23,413 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:55:23,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:23,499 INFO L225 Difference]: With dead ends: 31312 [2023-12-02 16:55:23,499 INFO L226 Difference]: Without dead ends: 31164 [2023-12-02 16:55:23,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:55:23,500 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 435 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:23,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 895 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:55:23,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31164 states. [2023-12-02 16:55:23,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31164 to 15831. [2023-12-02 16:55:23,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15831 states, 15830 states have (on average 3.9751105495893873) internal successors, (62926), 15830 states have internal predecessors, (62926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:23,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15831 states to 15831 states and 62926 transitions. [2023-12-02 16:55:23,993 INFO L78 Accepts]: Start accepts. Automaton has 15831 states and 62926 transitions. Word has length 58 [2023-12-02 16:55:23,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:23,994 INFO L495 AbstractCegarLoop]: Abstraction has 15831 states and 62926 transitions. [2023-12-02 16:55:23,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:23,994 INFO L276 IsEmpty]: Start isEmpty. Operand 15831 states and 62926 transitions. [2023-12-02 16:55:24,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:55:24,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:24,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:55:24,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2023-12-02 16:55:24,024 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:55:24,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:24,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2022979530, now seen corresponding path program 92 times [2023-12-02 16:55:24,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:55:24,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929264672] [2023-12-02 16:55:24,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:24,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:55:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:25,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:55:25,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:55:25,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929264672] [2023-12-02 16:55:25,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929264672] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:25,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:25,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:55:25,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643143565] [2023-12-02 16:55:25,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:25,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:55:25,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:55:25,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:55:25,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:55:25,401 INFO L87 Difference]: Start difference. First operand 15831 states and 62926 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:27,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:27,065 INFO L93 Difference]: Finished difference Result 31252 states and 118665 transitions. [2023-12-02 16:55:27,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:55:27,065 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:55:27,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:27,161 INFO L225 Difference]: With dead ends: 31252 [2023-12-02 16:55:27,161 INFO L226 Difference]: Without dead ends: 30990 [2023-12-02 16:55:27,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=336, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:55:27,162 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 427 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:27,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 896 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:55:27,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30990 states. [2023-12-02 16:55:27,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30990 to 15795. [2023-12-02 16:55:27,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15795 states, 15794 states have (on average 3.976573382297075) internal successors, (62806), 15794 states have internal predecessors, (62806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:27,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15795 states to 15795 states and 62806 transitions. [2023-12-02 16:55:27,732 INFO L78 Accepts]: Start accepts. Automaton has 15795 states and 62806 transitions. Word has length 58 [2023-12-02 16:55:27,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:27,732 INFO L495 AbstractCegarLoop]: Abstraction has 15795 states and 62806 transitions. [2023-12-02 16:55:27,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:27,732 INFO L276 IsEmpty]: Start isEmpty. Operand 15795 states and 62806 transitions. [2023-12-02 16:55:27,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:55:27,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:27,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:55:27,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2023-12-02 16:55:27,759 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:55:27,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:27,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1933423946, now seen corresponding path program 93 times [2023-12-02 16:55:27,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:55:27,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028250248] [2023-12-02 16:55:27,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:27,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:55:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:29,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:55:29,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:55:29,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028250248] [2023-12-02 16:55:29,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028250248] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:29,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:29,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:55:29,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099193169] [2023-12-02 16:55:29,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:29,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:55:29,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:55:29,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:55:29,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:55:29,021 INFO L87 Difference]: Start difference. First operand 15795 states and 62806 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:30,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:30,847 INFO L93 Difference]: Finished difference Result 30991 states and 117859 transitions. [2023-12-02 16:55:30,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:55:30,847 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:55:30,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:30,933 INFO L225 Difference]: With dead ends: 30991 [2023-12-02 16:55:30,934 INFO L226 Difference]: Without dead ends: 30732 [2023-12-02 16:55:30,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:55:30,934 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 446 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:30,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 826 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:55:30,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30732 states. [2023-12-02 16:55:31,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30732 to 16026. [2023-12-02 16:55:31,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16026 states, 16025 states have (on average 3.964804992199688) internal successors, (63536), 16025 states have internal predecessors, (63536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:31,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16026 states to 16026 states and 63536 transitions. [2023-12-02 16:55:31,451 INFO L78 Accepts]: Start accepts. Automaton has 16026 states and 63536 transitions. Word has length 58 [2023-12-02 16:55:31,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:31,451 INFO L495 AbstractCegarLoop]: Abstraction has 16026 states and 63536 transitions. [2023-12-02 16:55:31,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:31,451 INFO L276 IsEmpty]: Start isEmpty. Operand 16026 states and 63536 transitions. [2023-12-02 16:55:31,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:55:31,480 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:31,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:55:31,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2023-12-02 16:55:31,481 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:55:31,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:31,481 INFO L85 PathProgramCache]: Analyzing trace with hash 581575764, now seen corresponding path program 94 times [2023-12-02 16:55:31,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:55:31,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816149073] [2023-12-02 16:55:31,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:31,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:55:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:32,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:55:32,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:55:32,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816149073] [2023-12-02 16:55:32,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816149073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:32,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:32,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:55:32,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510388932] [2023-12-02 16:55:32,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:32,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:55:32,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:55:32,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:55:32,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:55:32,720 INFO L87 Difference]: Start difference. First operand 16026 states and 63536 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:34,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:34,413 INFO L93 Difference]: Finished difference Result 31024 states and 117846 transitions. [2023-12-02 16:55:34,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:55:34,414 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:55:34,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:34,499 INFO L225 Difference]: With dead ends: 31024 [2023-12-02 16:55:34,500 INFO L226 Difference]: Without dead ends: 30891 [2023-12-02 16:55:34,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=170, Invalid=336, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:55:34,500 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 430 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:34,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 888 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:55:34,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30891 states. [2023-12-02 16:55:34,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30891 to 16047. [2023-12-02 16:55:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16047 states, 16046 states have (on average 3.9629191075657486) internal successors, (63589), 16046 states have internal predecessors, (63589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:34,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16047 states to 16047 states and 63589 transitions. [2023-12-02 16:55:34,991 INFO L78 Accepts]: Start accepts. Automaton has 16047 states and 63589 transitions. Word has length 58 [2023-12-02 16:55:34,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:34,991 INFO L495 AbstractCegarLoop]: Abstraction has 16047 states and 63589 transitions. [2023-12-02 16:55:34,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:34,991 INFO L276 IsEmpty]: Start isEmpty. Operand 16047 states and 63589 transitions. [2023-12-02 16:55:35,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:55:35,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:35,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:55:35,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2023-12-02 16:55:35,019 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:55:35,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:35,019 INFO L85 PathProgramCache]: Analyzing trace with hash -461368650, now seen corresponding path program 95 times [2023-12-02 16:55:35,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:55:35,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221740677] [2023-12-02 16:55:35,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:35,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:55:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:36,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:55:36,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:55:36,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221740677] [2023-12-02 16:55:36,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221740677] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:36,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:36,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:55:36,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528905607] [2023-12-02 16:55:36,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:36,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:55:36,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:55:36,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:55:36,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:55:36,516 INFO L87 Difference]: Start difference. First operand 16047 states and 63589 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:38,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:38,158 INFO L93 Difference]: Finished difference Result 30889 states and 117474 transitions. [2023-12-02 16:55:38,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:55:38,158 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:55:38,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:38,250 INFO L225 Difference]: With dead ends: 30889 [2023-12-02 16:55:38,250 INFO L226 Difference]: Without dead ends: 30669 [2023-12-02 16:55:38,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:55:38,251 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 391 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:38,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 865 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:55:38,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30669 states. [2023-12-02 16:55:38,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30669 to 15963. [2023-12-02 16:55:38,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15963 states, 15962 states have (on average 3.9665455456709684) internal successors, (63314), 15962 states have internal predecessors, (63314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:38,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15963 states to 15963 states and 63314 transitions. [2023-12-02 16:55:38,751 INFO L78 Accepts]: Start accepts. Automaton has 15963 states and 63314 transitions. Word has length 58 [2023-12-02 16:55:38,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:38,751 INFO L495 AbstractCegarLoop]: Abstraction has 15963 states and 63314 transitions. [2023-12-02 16:55:38,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:38,752 INFO L276 IsEmpty]: Start isEmpty. Operand 15963 states and 63314 transitions. [2023-12-02 16:55:38,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:55:38,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:38,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:55:38,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2023-12-02 16:55:38,785 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:55:38,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:38,785 INFO L85 PathProgramCache]: Analyzing trace with hash -639228092, now seen corresponding path program 96 times [2023-12-02 16:55:38,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:55:38,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826855033] [2023-12-02 16:55:38,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:38,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:55:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:40,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:55:40,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:55:40,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826855033] [2023-12-02 16:55:40,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826855033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:40,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:40,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:55:40,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435472854] [2023-12-02 16:55:40,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:40,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:55:40,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:55:40,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:55:40,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:55:40,111 INFO L87 Difference]: Start difference. First operand 15963 states and 63314 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:41,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:41,627 INFO L93 Difference]: Finished difference Result 30892 states and 117480 transitions. [2023-12-02 16:55:41,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:55:41,628 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:55:41,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:41,718 INFO L225 Difference]: With dead ends: 30892 [2023-12-02 16:55:41,718 INFO L226 Difference]: Without dead ends: 30759 [2023-12-02 16:55:41,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=173, Invalid=333, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:55:41,719 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 450 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:41,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 798 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:55:41,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30759 states. [2023-12-02 16:55:42,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30759 to 16026. [2023-12-02 16:55:42,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16026 states, 16025 states have (on average 3.9634945397815913) internal successors, (63515), 16025 states have internal predecessors, (63515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:42,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16026 states to 16026 states and 63515 transitions. [2023-12-02 16:55:42,215 INFO L78 Accepts]: Start accepts. Automaton has 16026 states and 63515 transitions. Word has length 58 [2023-12-02 16:55:42,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:42,215 INFO L495 AbstractCegarLoop]: Abstraction has 16026 states and 63515 transitions. [2023-12-02 16:55:42,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:42,215 INFO L276 IsEmpty]: Start isEmpty. Operand 16026 states and 63515 transitions. [2023-12-02 16:55:42,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:55:42,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:42,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:55:42,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2023-12-02 16:55:42,242 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:55:42,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:42,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1682172506, now seen corresponding path program 97 times [2023-12-02 16:55:42,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:55:42,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743389549] [2023-12-02 16:55:42,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:42,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:55:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:43,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:55:43,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:55:43,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743389549] [2023-12-02 16:55:43,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743389549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:43,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:43,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:55:43,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602561021] [2023-12-02 16:55:43,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:43,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:55:43,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:55:43,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:55:43,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:55:43,527 INFO L87 Difference]: Start difference. First operand 16026 states and 63515 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:45,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:45,102 INFO L93 Difference]: Finished difference Result 30895 states and 117465 transitions. [2023-12-02 16:55:45,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:55:45,102 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:55:45,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:45,188 INFO L225 Difference]: With dead ends: 30895 [2023-12-02 16:55:45,188 INFO L226 Difference]: Without dead ends: 30738 [2023-12-02 16:55:45,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=332, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:55:45,188 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 401 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:45,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 794 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:55:45,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30738 states. [2023-12-02 16:55:45,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30738 to 16005. [2023-12-02 16:55:45,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16005 states, 16004 states have (on average 3.9640714821294676) internal successors, (63441), 16004 states have internal predecessors, (63441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:45,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16005 states to 16005 states and 63441 transitions. [2023-12-02 16:55:45,688 INFO L78 Accepts]: Start accepts. Automaton has 16005 states and 63441 transitions. Word has length 58 [2023-12-02 16:55:45,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:45,689 INFO L495 AbstractCegarLoop]: Abstraction has 16005 states and 63441 transitions. [2023-12-02 16:55:45,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:45,689 INFO L276 IsEmpty]: Start isEmpty. Operand 16005 states and 63441 transitions. [2023-12-02 16:55:45,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:55:45,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:45,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:55:45,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2023-12-02 16:55:45,717 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:55:45,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:45,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1885599956, now seen corresponding path program 98 times [2023-12-02 16:55:45,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:55:45,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423386745] [2023-12-02 16:55:45,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:45,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:55:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:55:47,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:55:47,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423386745] [2023-12-02 16:55:47,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423386745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:47,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:47,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:55:47,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781908619] [2023-12-02 16:55:47,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:47,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:55:47,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:55:47,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:55:47,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:55:47,014 INFO L87 Difference]: Start difference. First operand 16005 states and 63441 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:48,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:48,835 INFO L93 Difference]: Finished difference Result 30736 states and 117034 transitions. [2023-12-02 16:55:48,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:55:48,835 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:55:48,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:48,924 INFO L225 Difference]: With dead ends: 30736 [2023-12-02 16:55:48,924 INFO L226 Difference]: Without dead ends: 30252 [2023-12-02 16:55:48,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=331, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:55:48,924 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 378 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:48,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 796 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:55:48,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30252 states. [2023-12-02 16:55:49,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30252 to 15747. [2023-12-02 16:55:49,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15747 states, 15746 states have (on average 3.9752318049028323) internal successors, (62594), 15746 states have internal predecessors, (62594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:49,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15747 states to 15747 states and 62594 transitions. [2023-12-02 16:55:49,402 INFO L78 Accepts]: Start accepts. Automaton has 15747 states and 62594 transitions. Word has length 58 [2023-12-02 16:55:49,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:49,403 INFO L495 AbstractCegarLoop]: Abstraction has 15747 states and 62594 transitions. [2023-12-02 16:55:49,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:49,403 INFO L276 IsEmpty]: Start isEmpty. Operand 15747 states and 62594 transitions. [2023-12-02 16:55:49,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:55:49,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:49,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:55:49,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2023-12-02 16:55:49,430 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:55:49,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:49,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1330355460, now seen corresponding path program 99 times [2023-12-02 16:55:49,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:55:49,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347901091] [2023-12-02 16:55:49,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:49,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:55:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:50,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:55:50,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:55:50,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347901091] [2023-12-02 16:55:50,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347901091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:50,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:50,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:55:50,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293416094] [2023-12-02 16:55:50,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:50,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:55:50,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:55:50,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:55:50,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:55:50,818 INFO L87 Difference]: Start difference. First operand 15747 states and 62594 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:52,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:52,812 INFO L93 Difference]: Finished difference Result 31336 states and 118887 transitions. [2023-12-02 16:55:52,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 16:55:52,812 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:55:52,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:52,898 INFO L225 Difference]: With dead ends: 31336 [2023-12-02 16:55:52,898 INFO L226 Difference]: Without dead ends: 31203 [2023-12-02 16:55:52,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=233, Invalid=469, Unknown=0, NotChecked=0, Total=702 [2023-12-02 16:55:52,899 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 422 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 1585 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:52,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 1078 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1585 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:55:52,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31203 states. [2023-12-02 16:55:53,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31203 to 15849. [2023-12-02 16:55:53,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15849 states, 15848 states have (on average 3.9741923271075215) internal successors, (62983), 15848 states have internal predecessors, (62983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:53,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15849 states to 15849 states and 62983 transitions. [2023-12-02 16:55:53,399 INFO L78 Accepts]: Start accepts. Automaton has 15849 states and 62983 transitions. Word has length 58 [2023-12-02 16:55:53,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:53,399 INFO L495 AbstractCegarLoop]: Abstraction has 15849 states and 62983 transitions. [2023-12-02 16:55:53,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:53,399 INFO L276 IsEmpty]: Start isEmpty. Operand 15849 states and 62983 transitions. [2023-12-02 16:55:53,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:55:53,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:53,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:55:53,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2023-12-02 16:55:53,428 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:55:53,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:53,429 INFO L85 PathProgramCache]: Analyzing trace with hash -894249244, now seen corresponding path program 100 times [2023-12-02 16:55:53,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:55:53,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24703610] [2023-12-02 16:55:53,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:53,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:55:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:54,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:55:54,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:55:54,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24703610] [2023-12-02 16:55:54,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24703610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:54,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:54,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:55:54,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451399229] [2023-12-02 16:55:54,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:54,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:55:54,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:55:54,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:55:54,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:55:54,706 INFO L87 Difference]: Start difference. First operand 15849 states and 62983 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:56,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:56,810 INFO L93 Difference]: Finished difference Result 31318 states and 118824 transitions. [2023-12-02 16:55:56,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 16:55:56,810 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:55:56,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:56,897 INFO L225 Difference]: With dead ends: 31318 [2023-12-02 16:55:56,897 INFO L226 Difference]: Without dead ends: 31191 [2023-12-02 16:55:56,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=215, Invalid=435, Unknown=0, NotChecked=0, Total=650 [2023-12-02 16:55:56,898 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 434 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:56,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1070 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1584 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 16:55:56,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31191 states. [2023-12-02 16:55:57,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31191 to 15837. [2023-12-02 16:55:57,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15837 states, 15836 states have (on average 3.974425359939379) internal successors, (62939), 15836 states have internal predecessors, (62939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:57,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15837 states to 15837 states and 62939 transitions. [2023-12-02 16:55:57,435 INFO L78 Accepts]: Start accepts. Automaton has 15837 states and 62939 transitions. Word has length 58 [2023-12-02 16:55:57,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:57,435 INFO L495 AbstractCegarLoop]: Abstraction has 15837 states and 62939 transitions. [2023-12-02 16:55:57,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:57,436 INFO L276 IsEmpty]: Start isEmpty. Operand 15837 states and 62939 transitions. [2023-12-02 16:55:57,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:55:57,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:57,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:55:57,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2023-12-02 16:55:57,468 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:55:57,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:57,468 INFO L85 PathProgramCache]: Analyzing trace with hash 726325542, now seen corresponding path program 101 times [2023-12-02 16:55:57,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:55:57,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300767594] [2023-12-02 16:55:57,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:57,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:55:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:58,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:55:58,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:55:58,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300767594] [2023-12-02 16:55:58,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300767594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:58,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:58,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:55:58,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47280790] [2023-12-02 16:55:58,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:58,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:55:58,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:55:58,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:55:58,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:55:58,906 INFO L87 Difference]: Start difference. First operand 15837 states and 62939 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:00,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:56:00,859 INFO L93 Difference]: Finished difference Result 31216 states and 118495 transitions. [2023-12-02 16:56:00,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:56:00,859 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:56:00,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:56:00,951 INFO L225 Difference]: With dead ends: 31216 [2023-12-02 16:56:00,951 INFO L226 Difference]: Without dead ends: 30993 [2023-12-02 16:56:00,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=402, Unknown=0, NotChecked=0, Total=600 [2023-12-02 16:56:00,952 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 451 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:56:00,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 1013 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:56:01,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30993 states. [2023-12-02 16:56:01,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30993 to 15801. [2023-12-02 16:56:01,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15801 states, 15800 states have (on average 3.974746835443038) internal successors, (62801), 15800 states have internal predecessors, (62801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:01,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15801 states to 15801 states and 62801 transitions. [2023-12-02 16:56:01,530 INFO L78 Accepts]: Start accepts. Automaton has 15801 states and 62801 transitions. Word has length 58 [2023-12-02 16:56:01,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:56:01,530 INFO L495 AbstractCegarLoop]: Abstraction has 15801 states and 62801 transitions. [2023-12-02 16:56:01,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:01,531 INFO L276 IsEmpty]: Start isEmpty. Operand 15801 states and 62801 transitions. [2023-12-02 16:56:01,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:56:01,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:56:01,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:56:01,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2023-12-02 16:56:01,561 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:56:01,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:56:01,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1504265434, now seen corresponding path program 102 times [2023-12-02 16:56:01,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:56:01,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549643664] [2023-12-02 16:56:01,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:56:01,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:56:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:56:02,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:56:02,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:56:02,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549643664] [2023-12-02 16:56:02,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549643664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:56:02,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:56:02,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:56:02,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135408521] [2023-12-02 16:56:02,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:56:02,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:56:02,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:56:02,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:56:02,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:56:02,950 INFO L87 Difference]: Start difference. First operand 15801 states and 62801 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:04,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:56:04,707 INFO L93 Difference]: Finished difference Result 31474 states and 119151 transitions. [2023-12-02 16:56:04,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:56:04,707 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:56:04,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:56:04,798 INFO L225 Difference]: With dead ends: 31474 [2023-12-02 16:56:04,798 INFO L226 Difference]: Without dead ends: 31341 [2023-12-02 16:56:04,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:56:04,799 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 484 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:56:04,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 981 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1458 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:56:04,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31341 states. [2023-12-02 16:56:05,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31341 to 15819. [2023-12-02 16:56:05,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15819 states, 15818 states have (on average 3.973827285371096) internal successors, (62858), 15818 states have internal predecessors, (62858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:05,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15819 states to 15819 states and 62858 transitions. [2023-12-02 16:56:05,391 INFO L78 Accepts]: Start accepts. Automaton has 15819 states and 62858 transitions. Word has length 58 [2023-12-02 16:56:05,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:56:05,391 INFO L495 AbstractCegarLoop]: Abstraction has 15819 states and 62858 transitions. [2023-12-02 16:56:05,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:05,392 INFO L276 IsEmpty]: Start isEmpty. Operand 15819 states and 62858 transitions. [2023-12-02 16:56:05,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:56:05,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:56:05,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:56:05,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2023-12-02 16:56:05,426 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:56:05,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:56:05,426 INFO L85 PathProgramCache]: Analyzing trace with hash 566097158, now seen corresponding path program 103 times [2023-12-02 16:56:05,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:56:05,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629280732] [2023-12-02 16:56:05,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:56:05,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:56:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:56:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:56:06,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:56:06,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629280732] [2023-12-02 16:56:06,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629280732] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:56:06,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:56:06,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:56:06,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644314119] [2023-12-02 16:56:06,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:56:06,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:56:06,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:56:06,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:56:06,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:56:06,962 INFO L87 Difference]: Start difference. First operand 15819 states and 62858 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:08,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:56:08,867 INFO L93 Difference]: Finished difference Result 31456 states and 119088 transitions. [2023-12-02 16:56:08,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:56:08,867 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:56:08,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:56:08,973 INFO L225 Difference]: With dead ends: 31456 [2023-12-02 16:56:08,973 INFO L226 Difference]: Without dead ends: 31329 [2023-12-02 16:56:08,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:56:08,973 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 467 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 1490 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:56:08,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 996 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1490 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:56:09,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31329 states. [2023-12-02 16:56:09,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31329 to 15807. [2023-12-02 16:56:09,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15807 states, 15806 states have (on average 3.9744400860432747) internal successors, (62820), 15806 states have internal predecessors, (62820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:09,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15807 states to 15807 states and 62820 transitions. [2023-12-02 16:56:09,495 INFO L78 Accepts]: Start accepts. Automaton has 15807 states and 62820 transitions. Word has length 58 [2023-12-02 16:56:09,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:56:09,495 INFO L495 AbstractCegarLoop]: Abstraction has 15807 states and 62820 transitions. [2023-12-02 16:56:09,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:09,496 INFO L276 IsEmpty]: Start isEmpty. Operand 15807 states and 62820 transitions. [2023-12-02 16:56:09,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:56:09,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:56:09,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:56:09,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2023-12-02 16:56:09,531 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:56:09,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:56:09,531 INFO L85 PathProgramCache]: Analyzing trace with hash -281127676, now seen corresponding path program 104 times [2023-12-02 16:56:09,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:56:09,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299278837] [2023-12-02 16:56:09,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:56:09,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:56:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:56:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:56:11,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:56:11,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299278837] [2023-12-02 16:56:11,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299278837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:56:11,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:56:11,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:56:11,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512254926] [2023-12-02 16:56:11,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:56:11,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:56:11,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:56:11,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:56:11,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:56:11,028 INFO L87 Difference]: Start difference. First operand 15807 states and 62820 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:13,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:56:13,260 INFO L93 Difference]: Finished difference Result 31303 states and 118674 transitions. [2023-12-02 16:56:13,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:56:13,261 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:56:13,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:56:13,361 INFO L225 Difference]: With dead ends: 31303 [2023-12-02 16:56:13,362 INFO L226 Difference]: Without dead ends: 31170 [2023-12-02 16:56:13,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:56:13,362 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 405 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:56:13,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 1063 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 16:56:13,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31170 states. [2023-12-02 16:56:13,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31170 to 15828. [2023-12-02 16:56:13,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15828 states, 15827 states have (on average 3.972515321918241) internal successors, (62873), 15827 states have internal predecessors, (62873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15828 states to 15828 states and 62873 transitions. [2023-12-02 16:56:13,941 INFO L78 Accepts]: Start accepts. Automaton has 15828 states and 62873 transitions. Word has length 58 [2023-12-02 16:56:13,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:56:13,941 INFO L495 AbstractCegarLoop]: Abstraction has 15828 states and 62873 transitions. [2023-12-02 16:56:13,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:13,941 INFO L276 IsEmpty]: Start isEmpty. Operand 15828 states and 62873 transitions. [2023-12-02 16:56:13,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:56:13,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:56:13,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:56:13,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2023-12-02 16:56:13,975 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:56:13,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:56:13,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1324072090, now seen corresponding path program 105 times [2023-12-02 16:56:13,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:56:13,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410874570] [2023-12-02 16:56:13,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:56:13,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:56:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:56:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:56:15,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:56:15,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410874570] [2023-12-02 16:56:15,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410874570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:56:15,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:56:15,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:56:15,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744944393] [2023-12-02 16:56:15,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:56:15,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:56:15,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:56:15,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:56:15,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:56:15,330 INFO L87 Difference]: Start difference. First operand 15828 states and 62873 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:17,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:56:17,227 INFO L93 Difference]: Finished difference Result 31213 states and 118435 transitions. [2023-12-02 16:56:17,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:56:17,227 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:56:17,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:56:17,329 INFO L225 Difference]: With dead ends: 31213 [2023-12-02 16:56:17,329 INFO L226 Difference]: Without dead ends: 31056 [2023-12-02 16:56:17,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:56:17,330 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 416 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:56:17,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 953 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:56:17,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31056 states. [2023-12-02 16:56:17,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31056 to 15807. [2023-12-02 16:56:17,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15807 states, 15806 states have (on average 3.974060483360749) internal successors, (62814), 15806 states have internal predecessors, (62814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:17,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15807 states to 15807 states and 62814 transitions. [2023-12-02 16:56:17,918 INFO L78 Accepts]: Start accepts. Automaton has 15807 states and 62814 transitions. Word has length 58 [2023-12-02 16:56:17,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:56:17,918 INFO L495 AbstractCegarLoop]: Abstraction has 15807 states and 62814 transitions. [2023-12-02 16:56:17,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:17,918 INFO L276 IsEmpty]: Start isEmpty. Operand 15807 states and 62814 transitions. [2023-12-02 16:56:17,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:56:17,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:56:17,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:56:17,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2023-12-02 16:56:17,952 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:56:17,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:56:17,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1700408604, now seen corresponding path program 106 times [2023-12-02 16:56:17,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:56:17,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319087355] [2023-12-02 16:56:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:56:17,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:56:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:56:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:56:19,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:56:19,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319087355] [2023-12-02 16:56:19,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319087355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:56:19,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:56:19,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:56:19,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113578430] [2023-12-02 16:56:19,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:56:19,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:56:19,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:56:19,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:56:19,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:56:19,525 INFO L87 Difference]: Start difference. First operand 15807 states and 62814 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:21,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:56:21,787 INFO L93 Difference]: Finished difference Result 31321 states and 118720 transitions. [2023-12-02 16:56:21,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:56:21,788 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:56:21,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:56:21,888 INFO L225 Difference]: With dead ends: 31321 [2023-12-02 16:56:21,888 INFO L226 Difference]: Without dead ends: 31206 [2023-12-02 16:56:21,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:56:21,888 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 427 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:56:21,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 1097 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1682 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 16:56:21,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31206 states. [2023-12-02 16:56:22,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31206 to 15819. [2023-12-02 16:56:22,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15819 states, 15818 states have (on average 3.973068655961563) internal successors, (62846), 15818 states have internal predecessors, (62846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:22,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15819 states to 15819 states and 62846 transitions. [2023-12-02 16:56:22,360 INFO L78 Accepts]: Start accepts. Automaton has 15819 states and 62846 transitions. Word has length 58 [2023-12-02 16:56:22,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:56:22,360 INFO L495 AbstractCegarLoop]: Abstraction has 15819 states and 62846 transitions. [2023-12-02 16:56:22,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:22,361 INFO L276 IsEmpty]: Start isEmpty. Operand 15819 states and 62846 transitions. [2023-12-02 16:56:22,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:56:22,386 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:56:22,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:56:22,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2023-12-02 16:56:22,386 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:56:22,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:56:22,386 INFO L85 PathProgramCache]: Analyzing trace with hash -275479226, now seen corresponding path program 107 times [2023-12-02 16:56:22,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:56:22,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424254885] [2023-12-02 16:56:22,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:56:22,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:56:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:56:23,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:56:23,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:56:23,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424254885] [2023-12-02 16:56:23,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424254885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:56:23,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:56:23,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:56:23,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362626651] [2023-12-02 16:56:23,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:56:23,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:56:23,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:56:23,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:56:23,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:56:23,655 INFO L87 Difference]: Start difference. First operand 15819 states and 62846 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:25,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:56:25,362 INFO L93 Difference]: Finished difference Result 31204 states and 118408 transitions. [2023-12-02 16:56:25,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:56:25,362 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:56:25,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:56:25,455 INFO L225 Difference]: With dead ends: 31204 [2023-12-02 16:56:25,455 INFO L226 Difference]: Without dead ends: 31050 [2023-12-02 16:56:25,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:56:25,455 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 424 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:56:25,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 925 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:56:25,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31050 states. [2023-12-02 16:56:25,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31050 to 15801. [2023-12-02 16:56:25,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15801 states, 15800 states have (on average 3.974367088607595) internal successors, (62795), 15800 states have internal predecessors, (62795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:25,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15801 states to 15801 states and 62795 transitions. [2023-12-02 16:56:25,975 INFO L78 Accepts]: Start accepts. Automaton has 15801 states and 62795 transitions. Word has length 58 [2023-12-02 16:56:25,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:56:25,975 INFO L495 AbstractCegarLoop]: Abstraction has 15801 states and 62795 transitions. [2023-12-02 16:56:25,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:25,975 INFO L276 IsEmpty]: Start isEmpty. Operand 15801 states and 62795 transitions. [2023-12-02 16:56:26,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:56:26,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:56:26,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:56:26,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2023-12-02 16:56:26,005 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:56:26,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:56:26,005 INFO L85 PathProgramCache]: Analyzing trace with hash -815876344, now seen corresponding path program 108 times [2023-12-02 16:56:26,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:56:26,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880654125] [2023-12-02 16:56:26,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:56:26,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:56:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:56:27,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:56:27,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:56:27,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880654125] [2023-12-02 16:56:27,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880654125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:56:27,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:56:27,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:56:27,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059923384] [2023-12-02 16:56:27,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:56:27,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:56:27,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:56:27,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:56:27,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:56:27,311 INFO L87 Difference]: Start difference. First operand 15801 states and 62795 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:28,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:56:28,920 INFO L93 Difference]: Finished difference Result 31390 states and 118960 transitions. [2023-12-02 16:56:28,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:56:28,921 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:56:28,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:56:29,013 INFO L225 Difference]: With dead ends: 31390 [2023-12-02 16:56:29,013 INFO L226 Difference]: Without dead ends: 31203 [2023-12-02 16:56:29,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:56:29,014 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 459 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:56:29,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 949 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:56:29,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31203 states. [2023-12-02 16:56:29,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31203 to 15837. [2023-12-02 16:56:29,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15837 states, 15836 states have (on average 3.9713942914877496) internal successors, (62891), 15836 states have internal predecessors, (62891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:29,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15837 states to 15837 states and 62891 transitions. [2023-12-02 16:56:29,531 INFO L78 Accepts]: Start accepts. Automaton has 15837 states and 62891 transitions. Word has length 58 [2023-12-02 16:56:29,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:56:29,531 INFO L495 AbstractCegarLoop]: Abstraction has 15837 states and 62891 transitions. [2023-12-02 16:56:29,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:29,532 INFO L276 IsEmpty]: Start isEmpty. Operand 15837 states and 62891 transitions. [2023-12-02 16:56:29,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:56:29,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:56:29,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:56:29,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2023-12-02 16:56:29,559 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:56:29,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:56:29,560 INFO L85 PathProgramCache]: Analyzing trace with hash 893799590, now seen corresponding path program 109 times [2023-12-02 16:56:29,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:56:29,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18370596] [2023-12-02 16:56:29,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:56:29,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:56:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:56:31,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:56:31,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:56:31,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18370596] [2023-12-02 16:56:31,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18370596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:56:31,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:56:31,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:56:31,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933879795] [2023-12-02 16:56:31,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:56:31,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:56:31,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:56:31,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:56:31,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:56:31,031 INFO L87 Difference]: Start difference. First operand 15837 states and 62891 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:32,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:56:32,819 INFO L93 Difference]: Finished difference Result 31351 states and 118797 transitions. [2023-12-02 16:56:32,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:56:32,819 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:56:32,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:56:32,910 INFO L225 Difference]: With dead ends: 31351 [2023-12-02 16:56:32,910 INFO L226 Difference]: Without dead ends: 31236 [2023-12-02 16:56:32,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:56:32,910 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 487 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:56:32,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 936 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:56:32,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31236 states. [2023-12-02 16:56:33,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31236 to 15849. [2023-12-02 16:56:33,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15849 states, 15848 states have (on average 3.970406360424028) internal successors, (62923), 15848 states have internal predecessors, (62923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15849 states to 15849 states and 62923 transitions. [2023-12-02 16:56:33,394 INFO L78 Accepts]: Start accepts. Automaton has 15849 states and 62923 transitions. Word has length 58 [2023-12-02 16:56:33,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:56:33,394 INFO L495 AbstractCegarLoop]: Abstraction has 15849 states and 62923 transitions. [2023-12-02 16:56:33,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:33,394 INFO L276 IsEmpty]: Start isEmpty. Operand 15849 states and 62923 transitions. [2023-12-02 16:56:33,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:56:33,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:56:33,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:56:33,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2023-12-02 16:56:33,422 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:56:33,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:56:33,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1976238328, now seen corresponding path program 110 times [2023-12-02 16:56:33,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:56:33,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315782420] [2023-12-02 16:56:33,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:56:33,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:56:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:56:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:56:34,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:56:34,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315782420] [2023-12-02 16:56:34,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315782420] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:56:34,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:56:34,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:56:34,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628899286] [2023-12-02 16:56:34,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:56:34,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:56:34,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:56:34,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:56:34,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:56:34,779 INFO L87 Difference]: Start difference. First operand 15849 states and 62923 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:36,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:56:36,726 INFO L93 Difference]: Finished difference Result 31234 states and 118485 transitions. [2023-12-02 16:56:36,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:56:36,727 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:56:36,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:56:36,820 INFO L225 Difference]: With dead ends: 31234 [2023-12-02 16:56:36,820 INFO L226 Difference]: Without dead ends: 31032 [2023-12-02 16:56:36,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:56:36,821 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 428 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:56:36,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 992 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1510 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:56:36,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31032 states. [2023-12-02 16:56:37,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31032 to 15783. [2023-12-02 16:56:37,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15783 states, 15782 states have (on average 3.9745279432264606) internal successors, (62726), 15782 states have internal predecessors, (62726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:37,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15783 states to 15783 states and 62726 transitions. [2023-12-02 16:56:37,334 INFO L78 Accepts]: Start accepts. Automaton has 15783 states and 62726 transitions. Word has length 58 [2023-12-02 16:56:37,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:56:37,334 INFO L495 AbstractCegarLoop]: Abstraction has 15783 states and 62726 transitions. [2023-12-02 16:56:37,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:37,334 INFO L276 IsEmpty]: Start isEmpty. Operand 15783 states and 62726 transitions. [2023-12-02 16:56:37,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:56:37,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:56:37,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:56:37,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2023-12-02 16:56:37,362 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:56:37,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:56:37,362 INFO L85 PathProgramCache]: Analyzing trace with hash 925092950, now seen corresponding path program 111 times [2023-12-02 16:56:37,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:56:37,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18588934] [2023-12-02 16:56:37,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:56:37,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:56:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:56:38,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:56:38,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:56:38,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18588934] [2023-12-02 16:56:38,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18588934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:56:38,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:56:38,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:56:38,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235073428] [2023-12-02 16:56:38,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:56:38,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:56:38,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:56:38,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:56:38,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:56:38,841 INFO L87 Difference]: Start difference. First operand 15783 states and 62726 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:40,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:56:40,790 INFO L93 Difference]: Finished difference Result 31930 states and 120636 transitions. [2023-12-02 16:56:40,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 16:56:40,791 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:56:40,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:56:40,898 INFO L225 Difference]: With dead ends: 31930 [2023-12-02 16:56:40,899 INFO L226 Difference]: Without dead ends: 31797 [2023-12-02 16:56:40,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=236, Invalid=466, Unknown=0, NotChecked=0, Total=702 [2023-12-02 16:56:40,899 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 488 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:56:40,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1002 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:56:40,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31797 states. [2023-12-02 16:56:41,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31797 to 15813. [2023-12-02 16:56:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15813 states, 15812 states have (on average 3.9737541108019228) internal successors, (62833), 15812 states have internal predecessors, (62833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:41,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15813 states to 15813 states and 62833 transitions. [2023-12-02 16:56:41,387 INFO L78 Accepts]: Start accepts. Automaton has 15813 states and 62833 transitions. Word has length 58 [2023-12-02 16:56:41,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:56:41,387 INFO L495 AbstractCegarLoop]: Abstraction has 15813 states and 62833 transitions. [2023-12-02 16:56:41,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:41,387 INFO L276 IsEmpty]: Start isEmpty. Operand 15813 states and 62833 transitions. [2023-12-02 16:56:41,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:56:41,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:56:41,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:56:41,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2023-12-02 16:56:41,416 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:56:41,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:56:41,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1299511754, now seen corresponding path program 112 times [2023-12-02 16:56:41,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:56:41,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259314717] [2023-12-02 16:56:41,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:56:41,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:56:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:56:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:56:42,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:56:42,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259314717] [2023-12-02 16:56:42,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259314717] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:56:42,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:56:42,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:56:42,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951580351] [2023-12-02 16:56:42,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:56:42,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:56:42,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:56:42,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:56:42,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:56:42,726 INFO L87 Difference]: Start difference. First operand 15813 states and 62833 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:44,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:56:44,897 INFO L93 Difference]: Finished difference Result 31786 states and 120192 transitions. [2023-12-02 16:56:44,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 16:56:44,898 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:56:44,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:56:44,981 INFO L225 Difference]: With dead ends: 31786 [2023-12-02 16:56:44,981 INFO L226 Difference]: Without dead ends: 31659 [2023-12-02 16:56:44,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=218, Invalid=432, Unknown=0, NotChecked=0, Total=650 [2023-12-02 16:56:44,981 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 456 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:56:44,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1059 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1581 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 16:56:45,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31659 states. [2023-12-02 16:56:45,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31659 to 15801. [2023-12-02 16:56:45,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15801 states, 15800 states have (on average 3.974367088607595) internal successors, (62795), 15800 states have internal predecessors, (62795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:45,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15801 states to 15801 states and 62795 transitions. [2023-12-02 16:56:45,456 INFO L78 Accepts]: Start accepts. Automaton has 15801 states and 62795 transitions. Word has length 58 [2023-12-02 16:56:45,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:56:45,457 INFO L495 AbstractCegarLoop]: Abstraction has 15801 states and 62795 transitions. [2023-12-02 16:56:45,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:45,457 INFO L276 IsEmpty]: Start isEmpty. Operand 15801 states and 62795 transitions. [2023-12-02 16:56:45,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:56:45,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:56:45,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:56:45,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2023-12-02 16:56:45,483 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:56:45,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:56:45,483 INFO L85 PathProgramCache]: Analyzing trace with hash -2146736588, now seen corresponding path program 113 times [2023-12-02 16:56:45,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:56:45,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781863224] [2023-12-02 16:56:45,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:56:45,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:56:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:56:46,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:56:46,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:56:46,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781863224] [2023-12-02 16:56:46,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781863224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:56:46,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:56:46,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:56:46,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411237159] [2023-12-02 16:56:46,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:56:46,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:56:46,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:56:46,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:56:46,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:56:46,872 INFO L87 Difference]: Start difference. First operand 15801 states and 62795 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:48,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:56:48,585 INFO L93 Difference]: Finished difference Result 31789 states and 120123 transitions. [2023-12-02 16:56:48,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:56:48,585 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:56:48,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:56:48,675 INFO L225 Difference]: With dead ends: 31789 [2023-12-02 16:56:48,675 INFO L226 Difference]: Without dead ends: 31656 [2023-12-02 16:56:48,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=202, Invalid=398, Unknown=0, NotChecked=0, Total=600 [2023-12-02 16:56:48,675 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 561 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:56:48,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 887 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:56:48,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31656 states. [2023-12-02 16:56:49,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31656 to 15822. [2023-12-02 16:56:49,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15822 states, 15821 states have (on average 3.9724416914227927) internal successors, (62848), 15821 states have internal predecessors, (62848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:49,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15822 states to 15822 states and 62848 transitions. [2023-12-02 16:56:49,153 INFO L78 Accepts]: Start accepts. Automaton has 15822 states and 62848 transitions. Word has length 58 [2023-12-02 16:56:49,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:56:49,153 INFO L495 AbstractCegarLoop]: Abstraction has 15822 states and 62848 transitions. [2023-12-02 16:56:49,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:49,153 INFO L276 IsEmpty]: Start isEmpty. Operand 15822 states and 62848 transitions. [2023-12-02 16:56:49,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:56:49,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:56:49,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:56:49,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2023-12-02 16:56:49,179 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:56:49,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:56:49,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1105286294, now seen corresponding path program 114 times [2023-12-02 16:56:49,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:56:49,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043220437] [2023-12-02 16:56:49,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:56:49,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:56:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:56:50,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:56:50,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:56:50,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043220437] [2023-12-02 16:56:50,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043220437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:56:50,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:56:50,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:56:50,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907215256] [2023-12-02 16:56:50,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:56:50,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:56:50,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:56:50,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:56:50,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:56:50,567 INFO L87 Difference]: Start difference. First operand 15822 states and 62848 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:52,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:56:52,294 INFO L93 Difference]: Finished difference Result 31699 states and 119884 transitions. [2023-12-02 16:56:52,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:56:52,294 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:56:52,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:56:52,377 INFO L225 Difference]: With dead ends: 31699 [2023-12-02 16:56:52,377 INFO L226 Difference]: Without dead ends: 31542 [2023-12-02 16:56:52,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=203, Invalid=397, Unknown=0, NotChecked=0, Total=600 [2023-12-02 16:56:52,378 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 458 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 1423 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:56:52,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 937 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1423 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:56:52,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31542 states. [2023-12-02 16:56:52,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31542 to 15801. [2023-12-02 16:56:52,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15801 states, 15800 states have (on average 3.973987341772152) internal successors, (62789), 15800 states have internal predecessors, (62789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:52,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15801 states to 15801 states and 62789 transitions. [2023-12-02 16:56:52,854 INFO L78 Accepts]: Start accepts. Automaton has 15801 states and 62789 transitions. Word has length 58 [2023-12-02 16:56:52,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:56:52,855 INFO L495 AbstractCegarLoop]: Abstraction has 15801 states and 62789 transitions. [2023-12-02 16:56:52,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:52,855 INFO L276 IsEmpty]: Start isEmpty. Operand 15801 states and 62789 transitions. [2023-12-02 16:56:52,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:56:52,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:56:52,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:56:52,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2023-12-02 16:56:52,883 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:56:52,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:56:52,883 INFO L85 PathProgramCache]: Analyzing trace with hash 728949780, now seen corresponding path program 115 times [2023-12-02 16:56:52,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:56:52,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739199773] [2023-12-02 16:56:52,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:56:52,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:56:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:56:54,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:56:54,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:56:54,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739199773] [2023-12-02 16:56:54,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739199773] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:56:54,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:56:54,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:56:54,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504827985] [2023-12-02 16:56:54,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:56:54,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:56:54,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:56:54,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:56:54,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:56:54,207 INFO L87 Difference]: Start difference. First operand 15801 states and 62789 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:56,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:56:56,116 INFO L93 Difference]: Finished difference Result 31762 states and 120036 transitions. [2023-12-02 16:56:56,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:56:56,116 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:56:56,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:56:56,199 INFO L225 Difference]: With dead ends: 31762 [2023-12-02 16:56:56,199 INFO L226 Difference]: Without dead ends: 31647 [2023-12-02 16:56:56,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=202, Invalid=398, Unknown=0, NotChecked=0, Total=600 [2023-12-02 16:56:56,200 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 451 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:56:56,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 1047 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1556 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:56:56,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31647 states. [2023-12-02 16:56:56,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31647 to 15813. [2023-12-02 16:56:56,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15813 states, 15812 states have (on average 3.972995193523906) internal successors, (62821), 15812 states have internal predecessors, (62821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:56,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15813 states to 15813 states and 62821 transitions. [2023-12-02 16:56:56,719 INFO L78 Accepts]: Start accepts. Automaton has 15813 states and 62821 transitions. Word has length 58 [2023-12-02 16:56:56,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:56:56,719 INFO L495 AbstractCegarLoop]: Abstraction has 15813 states and 62821 transitions. [2023-12-02 16:56:56,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:56:56,720 INFO L276 IsEmpty]: Start isEmpty. Operand 15813 states and 62821 transitions. [2023-12-02 16:56:56,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:56:56,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:56:56,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:56:56,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2023-12-02 16:56:56,751 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:56:56,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:56:56,751 INFO L85 PathProgramCache]: Analyzing trace with hash -2141088138, now seen corresponding path program 116 times [2023-12-02 16:56:56,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:56:56,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166714724] [2023-12-02 16:56:56,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:56:56,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:56:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:56:58,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:56:58,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:56:58,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166714724] [2023-12-02 16:56:58,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166714724] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:56:58,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:56:58,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:56:58,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630911290] [2023-12-02 16:56:58,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:56:58,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:56:58,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:56:58,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:56:58,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:56:58,052 INFO L87 Difference]: Start difference. First operand 15813 states and 62821 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:00,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:57:00,008 INFO L93 Difference]: Finished difference Result 31690 states and 119857 transitions. [2023-12-02 16:57:00,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:57:00,009 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:57:00,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:57:00,091 INFO L225 Difference]: With dead ends: 31690 [2023-12-02 16:57:00,091 INFO L226 Difference]: Without dead ends: 31536 [2023-12-02 16:57:00,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=203, Invalid=397, Unknown=0, NotChecked=0, Total=600 [2023-12-02 16:57:00,092 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 415 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:57:00,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 1041 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:57:00,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31536 states. [2023-12-02 16:57:00,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31536 to 15795. [2023-12-02 16:57:00,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15795 states, 15794 states have (on average 3.974294035709763) internal successors, (62770), 15794 states have internal predecessors, (62770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:00,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15795 states to 15795 states and 62770 transitions. [2023-12-02 16:57:00,558 INFO L78 Accepts]: Start accepts. Automaton has 15795 states and 62770 transitions. Word has length 58 [2023-12-02 16:57:00,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:57:00,558 INFO L495 AbstractCegarLoop]: Abstraction has 15795 states and 62770 transitions. [2023-12-02 16:57:00,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:00,558 INFO L276 IsEmpty]: Start isEmpty. Operand 15795 states and 62770 transitions. [2023-12-02 16:57:00,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:57:00,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:57:00,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:57:00,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2023-12-02 16:57:00,584 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:57:00,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:57:00,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1361580378, now seen corresponding path program 117 times [2023-12-02 16:57:00,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:57:00,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211288707] [2023-12-02 16:57:00,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:57:00,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:57:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:57:01,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:57:01,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:57:01,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211288707] [2023-12-02 16:57:01,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211288707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:57:01,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:57:01,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:57:01,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242712488] [2023-12-02 16:57:01,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:57:01,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:57:01,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:57:01,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:57:01,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:57:01,814 INFO L87 Difference]: Start difference. First operand 15795 states and 62770 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:03,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:57:03,614 INFO L93 Difference]: Finished difference Result 31579 states and 119577 transitions. [2023-12-02 16:57:03,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 16:57:03,614 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:57:03,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:57:03,701 INFO L225 Difference]: With dead ends: 31579 [2023-12-02 16:57:03,701 INFO L226 Difference]: Without dead ends: 31446 [2023-12-02 16:57:03,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=241, Invalid=461, Unknown=0, NotChecked=0, Total=702 [2023-12-02 16:57:03,701 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 416 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:57:03,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 973 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:57:03,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31446 states. [2023-12-02 16:57:04,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31446 to 15858. [2023-12-02 16:57:04,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15858 states, 15857 states have (on average 3.9711799205398246) internal successors, (62971), 15857 states have internal predecessors, (62971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:04,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15858 states to 15858 states and 62971 transitions. [2023-12-02 16:57:04,180 INFO L78 Accepts]: Start accepts. Automaton has 15858 states and 62971 transitions. Word has length 58 [2023-12-02 16:57:04,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:57:04,180 INFO L495 AbstractCegarLoop]: Abstraction has 15858 states and 62971 transitions. [2023-12-02 16:57:04,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:04,180 INFO L276 IsEmpty]: Start isEmpty. Operand 15858 states and 62971 transitions. [2023-12-02 16:57:04,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:57:04,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:57:04,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:57:04,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2023-12-02 16:57:04,206 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:57:04,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:57:04,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1890442504, now seen corresponding path program 118 times [2023-12-02 16:57:04,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:57:04,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124713491] [2023-12-02 16:57:04,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:57:04,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:57:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:57:05,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:57:05,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:57:05,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124713491] [2023-12-02 16:57:05,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124713491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:57:05,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:57:05,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:57:05,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272278939] [2023-12-02 16:57:05,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:57:05,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:57:05,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:57:05,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:57:05,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:57:05,409 INFO L87 Difference]: Start difference. First operand 15858 states and 62971 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:07,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:57:07,083 INFO L93 Difference]: Finished difference Result 31456 states and 119181 transitions. [2023-12-02 16:57:07,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 16:57:07,084 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:57:07,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:57:07,170 INFO L225 Difference]: With dead ends: 31456 [2023-12-02 16:57:07,170 INFO L226 Difference]: Without dead ends: 31299 [2023-12-02 16:57:07,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=225, Invalid=425, Unknown=0, NotChecked=0, Total=650 [2023-12-02 16:57:07,170 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 437 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:57:07,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 843 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:57:07,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31299 states. [2023-12-02 16:57:07,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31299 to 15837. [2023-12-02 16:57:07,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15837 states, 15836 states have (on average 3.971773175044203) internal successors, (62897), 15836 states have internal predecessors, (62897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:07,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15837 states to 15837 states and 62897 transitions. [2023-12-02 16:57:07,665 INFO L78 Accepts]: Start accepts. Automaton has 15837 states and 62897 transitions. Word has length 58 [2023-12-02 16:57:07,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:57:07,666 INFO L495 AbstractCegarLoop]: Abstraction has 15837 states and 62897 transitions. [2023-12-02 16:57:07,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:07,666 INFO L276 IsEmpty]: Start isEmpty. Operand 15837 states and 62897 transitions. [2023-12-02 16:57:07,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:57:07,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:57:07,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:57:07,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2023-12-02 16:57:07,693 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:57:07,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:57:07,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1163247670, now seen corresponding path program 119 times [2023-12-02 16:57:07,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:57:07,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499101609] [2023-12-02 16:57:07,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:57:07,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:57:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:57:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:57:09,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:57:09,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499101609] [2023-12-02 16:57:09,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499101609] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:57:09,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:57:09,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:57:09,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259048026] [2023-12-02 16:57:09,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:57:09,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:57:09,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:57:09,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:57:09,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:57:09,214 INFO L87 Difference]: Start difference. First operand 15837 states and 62897 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:11,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:57:11,045 INFO L93 Difference]: Finished difference Result 31387 states and 119016 transitions. [2023-12-02 16:57:11,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 16:57:11,045 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:57:11,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:57:11,137 INFO L225 Difference]: With dead ends: 31387 [2023-12-02 16:57:11,137 INFO L226 Difference]: Without dead ends: 31119 [2023-12-02 16:57:11,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=225, Invalid=425, Unknown=0, NotChecked=0, Total=650 [2023-12-02 16:57:11,137 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 424 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:57:11,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 908 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:57:11,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31119 states. [2023-12-02 16:57:11,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31119 to 15795. [2023-12-02 16:57:11,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15795 states, 15794 states have (on average 3.973534253513993) internal successors, (62758), 15794 states have internal predecessors, (62758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:11,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15795 states to 15795 states and 62758 transitions. [2023-12-02 16:57:11,651 INFO L78 Accepts]: Start accepts. Automaton has 15795 states and 62758 transitions. Word has length 58 [2023-12-02 16:57:11,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:57:11,651 INFO L495 AbstractCegarLoop]: Abstraction has 15795 states and 62758 transitions. [2023-12-02 16:57:11,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:11,651 INFO L276 IsEmpty]: Start isEmpty. Operand 15795 states and 62758 transitions. [2023-12-02 16:57:11,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:57:11,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:57:11,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:57:11,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2023-12-02 16:57:11,681 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:57:11,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:57:11,682 INFO L85 PathProgramCache]: Analyzing trace with hash -339253594, now seen corresponding path program 120 times [2023-12-02 16:57:11,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:57:11,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314595509] [2023-12-02 16:57:11,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:57:11,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:57:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:57:12,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:57:12,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:57:12,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314595509] [2023-12-02 16:57:12,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314595509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:57:12,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:57:12,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:57:12,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443011830] [2023-12-02 16:57:12,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:57:12,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:57:12,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:57:12,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:57:12,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:57:12,980 INFO L87 Difference]: Start difference. First operand 15795 states and 62758 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:14,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:57:14,704 INFO L93 Difference]: Finished difference Result 31498 states and 119309 transitions. [2023-12-02 16:57:14,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:57:14,704 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:57:14,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:57:14,797 INFO L225 Difference]: With dead ends: 31498 [2023-12-02 16:57:14,797 INFO L226 Difference]: Without dead ends: 31383 [2023-12-02 16:57:14,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=203, Invalid=397, Unknown=0, NotChecked=0, Total=600 [2023-12-02 16:57:14,798 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 467 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:57:14,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 954 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:57:14,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31383 states. [2023-12-02 16:57:15,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31383 to 15831. [2023-12-02 16:57:15,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15831 states, 15830 states have (on average 3.9720783322804802) internal successors, (62878), 15830 states have internal predecessors, (62878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:15,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15831 states to 15831 states and 62878 transitions. [2023-12-02 16:57:15,304 INFO L78 Accepts]: Start accepts. Automaton has 15831 states and 62878 transitions. Word has length 58 [2023-12-02 16:57:15,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:57:15,304 INFO L495 AbstractCegarLoop]: Abstraction has 15831 states and 62878 transitions. [2023-12-02 16:57:15,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:15,304 INFO L276 IsEmpty]: Start isEmpty. Operand 15831 states and 62878 transitions. [2023-12-02 16:57:15,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:57:15,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:57:15,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:57:15,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2023-12-02 16:57:15,334 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:57:15,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:57:15,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1085675784, now seen corresponding path program 121 times [2023-12-02 16:57:15,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:57:15,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272249948] [2023-12-02 16:57:15,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:57:15,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:57:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:57:16,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:57:16,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:57:16,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272249948] [2023-12-02 16:57:16,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272249948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:57:16,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:57:16,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:57:16,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904818177] [2023-12-02 16:57:16,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:57:16,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:57:16,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:57:16,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:57:16,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:57:16,646 INFO L87 Difference]: Start difference. First operand 15831 states and 62878 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:18,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:57:18,525 INFO L93 Difference]: Finished difference Result 31519 states and 119354 transitions. [2023-12-02 16:57:18,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:57:18,525 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:57:18,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:57:18,614 INFO L225 Difference]: With dead ends: 31519 [2023-12-02 16:57:18,614 INFO L226 Difference]: Without dead ends: 31371 [2023-12-02 16:57:18,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=204, Invalid=396, Unknown=0, NotChecked=0, Total=600 [2023-12-02 16:57:18,615 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 454 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:57:18,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 968 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1432 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:57:18,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31371 states. [2023-12-02 16:57:19,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31371 to 15819. [2023-12-02 16:57:19,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15819 states, 15818 states have (on average 3.9723100265520292) internal successors, (62834), 15818 states have internal predecessors, (62834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:19,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15819 states to 15819 states and 62834 transitions. [2023-12-02 16:57:19,124 INFO L78 Accepts]: Start accepts. Automaton has 15819 states and 62834 transitions. Word has length 58 [2023-12-02 16:57:19,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:57:19,124 INFO L495 AbstractCegarLoop]: Abstraction has 15819 states and 62834 transitions. [2023-12-02 16:57:19,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:19,124 INFO L276 IsEmpty]: Start isEmpty. Operand 15819 states and 62834 transitions. [2023-12-02 16:57:19,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:57:19,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:57:19,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:57:19,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2023-12-02 16:57:19,153 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:57:19,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:57:19,154 INFO L85 PathProgramCache]: Analyzing trace with hash -690111914, now seen corresponding path program 122 times [2023-12-02 16:57:19,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:57:19,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336060358] [2023-12-02 16:57:19,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:57:19,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:57:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:57:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:57:20,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:57:20,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336060358] [2023-12-02 16:57:20,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336060358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:57:20,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:57:20,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:57:20,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105519075] [2023-12-02 16:57:20,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:57:20,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:57:20,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:57:20,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:57:20,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:57:20,477 INFO L87 Difference]: Start difference. First operand 15819 states and 62834 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:22,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:57:22,256 INFO L93 Difference]: Finished difference Result 31369 states and 118953 transitions. [2023-12-02 16:57:22,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:57:22,257 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:57:22,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:57:22,342 INFO L225 Difference]: With dead ends: 31369 [2023-12-02 16:57:22,342 INFO L226 Difference]: Without dead ends: 31107 [2023-12-02 16:57:22,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=205, Invalid=395, Unknown=0, NotChecked=0, Total=600 [2023-12-02 16:57:22,342 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 443 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:57:22,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 902 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:57:22,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31107 states. [2023-12-02 16:57:22,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31107 to 15783. [2023-12-02 16:57:22,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15783 states, 15782 states have (on average 3.973767583322773) internal successors, (62714), 15782 states have internal predecessors, (62714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:22,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15783 states to 15783 states and 62714 transitions. [2023-12-02 16:57:22,814 INFO L78 Accepts]: Start accepts. Automaton has 15783 states and 62714 transitions. Word has length 58 [2023-12-02 16:57:22,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:57:22,814 INFO L495 AbstractCegarLoop]: Abstraction has 15783 states and 62714 transitions. [2023-12-02 16:57:22,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:22,814 INFO L276 IsEmpty]: Start isEmpty. Operand 15783 states and 62714 transitions. [2023-12-02 16:57:22,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:57:22,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:57:22,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:57:22,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2023-12-02 16:57:22,840 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:57:22,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:57:22,841 INFO L85 PathProgramCache]: Analyzing trace with hash 429557430, now seen corresponding path program 123 times [2023-12-02 16:57:22,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:57:22,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971494306] [2023-12-02 16:57:22,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:57:22,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:57:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:57:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:57:24,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:57:24,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971494306] [2023-12-02 16:57:24,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971494306] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:57:24,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:57:24,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:57:24,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589918466] [2023-12-02 16:57:24,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:57:24,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:57:24,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:57:24,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:57:24,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:57:24,053 INFO L87 Difference]: Start difference. First operand 15783 states and 62714 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:25,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:57:25,733 INFO L93 Difference]: Finished difference Result 30892 states and 117472 transitions. [2023-12-02 16:57:25,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:57:25,733 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:57:25,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:57:25,817 INFO L225 Difference]: With dead ends: 30892 [2023-12-02 16:57:25,817 INFO L226 Difference]: Without dead ends: 30705 [2023-12-02 16:57:25,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=187, Invalid=365, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:57:25,817 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 386 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:57:25,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 937 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:57:25,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30705 states. [2023-12-02 16:57:26,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30705 to 15891. [2023-12-02 16:57:26,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15891 states, 15890 states have (on average 3.96941472624292) internal successors, (63074), 15890 states have internal predecessors, (63074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:26,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15891 states to 15891 states and 63074 transitions. [2023-12-02 16:57:26,282 INFO L78 Accepts]: Start accepts. Automaton has 15891 states and 63074 transitions. Word has length 58 [2023-12-02 16:57:26,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:57:26,282 INFO L495 AbstractCegarLoop]: Abstraction has 15891 states and 63074 transitions. [2023-12-02 16:57:26,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:26,282 INFO L276 IsEmpty]: Start isEmpty. Operand 15891 states and 63074 transitions. [2023-12-02 16:57:26,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:57:26,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:57:26,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:57:26,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2023-12-02 16:57:26,308 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:57:26,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:57:26,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2139233364, now seen corresponding path program 124 times [2023-12-02 16:57:26,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:57:26,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088388078] [2023-12-02 16:57:26,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:57:26,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:57:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:57:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:57:27,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:57:27,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088388078] [2023-12-02 16:57:27,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088388078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:57:27,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:57:27,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:57:27,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146666292] [2023-12-02 16:57:27,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:57:27,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:57:27,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:57:27,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:57:27,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:57:27,526 INFO L87 Difference]: Start difference. First operand 15891 states and 63074 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:29,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:57:29,227 INFO L93 Difference]: Finished difference Result 30970 states and 117609 transitions. [2023-12-02 16:57:29,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:57:29,227 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:57:29,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:57:29,314 INFO L225 Difference]: With dead ends: 30970 [2023-12-02 16:57:29,314 INFO L226 Difference]: Without dead ends: 30855 [2023-12-02 16:57:29,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=364, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:57:29,314 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 401 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 1471 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:57:29,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 1007 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1471 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:57:29,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30855 states. [2023-12-02 16:57:29,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30855 to 15903. [2023-12-02 16:57:29,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15903 states, 15902 states have (on average 3.9684316438183878) internal successors, (63106), 15902 states have internal predecessors, (63106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:29,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15903 states to 15903 states and 63106 transitions. [2023-12-02 16:57:29,802 INFO L78 Accepts]: Start accepts. Automaton has 15903 states and 63106 transitions. Word has length 58 [2023-12-02 16:57:29,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:57:29,802 INFO L495 AbstractCegarLoop]: Abstraction has 15903 states and 63106 transitions. [2023-12-02 16:57:29,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:29,802 INFO L276 IsEmpty]: Start isEmpty. Operand 15903 states and 63106 transitions. [2023-12-02 16:57:29,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:57:29,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:57:29,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:57:29,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2023-12-02 16:57:29,829 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:57:29,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:57:29,829 INFO L85 PathProgramCache]: Analyzing trace with hash -730804554, now seen corresponding path program 125 times [2023-12-02 16:57:29,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:57:29,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474132039] [2023-12-02 16:57:29,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:57:29,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:57:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:57:31,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:57:31,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:57:31,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474132039] [2023-12-02 16:57:31,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474132039] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:57:31,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:57:31,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:57:31,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142110294] [2023-12-02 16:57:31,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:57:31,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:57:31,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:57:31,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:57:31,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:57:31,007 INFO L87 Difference]: Start difference. First operand 15903 states and 63106 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:32,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:57:32,674 INFO L93 Difference]: Finished difference Result 30853 states and 117297 transitions. [2023-12-02 16:57:32,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:57:32,675 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:57:32,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:57:32,759 INFO L225 Difference]: With dead ends: 30853 [2023-12-02 16:57:32,759 INFO L226 Difference]: Without dead ends: 30669 [2023-12-02 16:57:32,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=363, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:57:32,760 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 383 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:57:32,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 1035 Invalid, 1618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:57:32,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30669 states. [2023-12-02 16:57:33,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30669 to 15855. [2023-12-02 16:57:33,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15855 states, 15854 states have (on average 3.9701021824145326) internal successors, (62942), 15854 states have internal predecessors, (62942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:33,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15855 states to 15855 states and 62942 transitions. [2023-12-02 16:57:33,241 INFO L78 Accepts]: Start accepts. Automaton has 15855 states and 62942 transitions. Word has length 58 [2023-12-02 16:57:33,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:57:33,241 INFO L495 AbstractCegarLoop]: Abstraction has 15855 states and 62942 transitions. [2023-12-02 16:57:33,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:33,242 INFO L276 IsEmpty]: Start isEmpty. Operand 15855 states and 62942 transitions. [2023-12-02 16:57:33,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:57:33,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:57:33,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:57:33,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2023-12-02 16:57:33,269 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:57:33,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:57:33,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1523178204, now seen corresponding path program 126 times [2023-12-02 16:57:33,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:57:33,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816379010] [2023-12-02 16:57:33,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:57:33,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:57:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:57:34,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:57:34,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:57:34,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816379010] [2023-12-02 16:57:34,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816379010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:57:34,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:57:34,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:57:34,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105179127] [2023-12-02 16:57:34,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:57:34,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:57:34,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:57:34,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:57:34,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:57:34,483 INFO L87 Difference]: Start difference. First operand 15855 states and 62942 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:36,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:57:36,287 INFO L93 Difference]: Finished difference Result 30874 states and 117354 transitions. [2023-12-02 16:57:36,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:57:36,287 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:57:36,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:57:36,368 INFO L225 Difference]: With dead ends: 30874 [2023-12-02 16:57:36,368 INFO L226 Difference]: Without dead ends: 30759 [2023-12-02 16:57:36,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=363, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:57:36,369 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 419 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:57:36,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 926 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:57:36,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30759 states. [2023-12-02 16:57:36,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30759 to 15891. [2023-12-02 16:57:36,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15891 states, 15890 states have (on average 3.968659534298301) internal successors, (63062), 15890 states have internal predecessors, (63062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15891 states to 15891 states and 63062 transitions. [2023-12-02 16:57:36,822 INFO L78 Accepts]: Start accepts. Automaton has 15891 states and 63062 transitions. Word has length 58 [2023-12-02 16:57:36,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:57:36,822 INFO L495 AbstractCegarLoop]: Abstraction has 15891 states and 63062 transitions. [2023-12-02 16:57:36,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:36,822 INFO L276 IsEmpty]: Start isEmpty. Operand 15891 states and 63062 transitions. [2023-12-02 16:57:36,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:57:36,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:57:36,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:57:36,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2023-12-02 16:57:36,852 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:57:36,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:57:36,852 INFO L85 PathProgramCache]: Analyzing trace with hash -98248826, now seen corresponding path program 127 times [2023-12-02 16:57:36,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:57:36,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198562485] [2023-12-02 16:57:36,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:57:36,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:57:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:57:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:57:38,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:57:38,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198562485] [2023-12-02 16:57:38,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198562485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:57:38,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:57:38,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:57:38,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043929740] [2023-12-02 16:57:38,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:57:38,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:57:38,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:57:38,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:57:38,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:57:38,043 INFO L87 Difference]: Start difference. First operand 15891 states and 63062 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:39,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:57:39,599 INFO L93 Difference]: Finished difference Result 30895 states and 117399 transitions. [2023-12-02 16:57:39,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:57:39,600 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:57:39,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:57:39,683 INFO L225 Difference]: With dead ends: 30895 [2023-12-02 16:57:39,683 INFO L226 Difference]: Without dead ends: 30747 [2023-12-02 16:57:39,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:57:39,684 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 437 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:57:39,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 863 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:57:39,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30747 states. [2023-12-02 16:57:40,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30747 to 15879. [2023-12-02 16:57:40,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15879 states, 15878 states have (on average 3.9688877692404585) internal successors, (63018), 15878 states have internal predecessors, (63018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:40,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15879 states to 15879 states and 63018 transitions. [2023-12-02 16:57:40,168 INFO L78 Accepts]: Start accepts. Automaton has 15879 states and 63018 transitions. Word has length 58 [2023-12-02 16:57:40,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:57:40,169 INFO L495 AbstractCegarLoop]: Abstraction has 15879 states and 63018 transitions. [2023-12-02 16:57:40,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:40,169 INFO L276 IsEmpty]: Start isEmpty. Operand 15879 states and 63018 transitions. [2023-12-02 16:57:40,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:57:40,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:57:40,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:57:40,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2023-12-02 16:57:40,196 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:57:40,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:57:40,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1874036524, now seen corresponding path program 128 times [2023-12-02 16:57:40,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:57:40,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810947128] [2023-12-02 16:57:40,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:57:40,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:57:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:57:41,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:57:41,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:57:41,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810947128] [2023-12-02 16:57:41,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810947128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:57:41,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:57:41,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:57:41,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297814819] [2023-12-02 16:57:41,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:57:41,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:57:41,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:57:41,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:57:41,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:57:41,435 INFO L87 Difference]: Start difference. First operand 15879 states and 63018 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:43,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:57:43,197 INFO L93 Difference]: Finished difference Result 30745 states and 116998 transitions. [2023-12-02 16:57:43,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:57:43,198 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:57:43,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:57:43,280 INFO L225 Difference]: With dead ends: 30745 [2023-12-02 16:57:43,280 INFO L226 Difference]: Without dead ends: 30099 [2023-12-02 16:57:43,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=191, Invalid=361, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:57:43,281 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 410 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:57:43,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 919 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:57:43,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30099 states. [2023-12-02 16:57:43,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30099 to 15459. [2023-12-02 16:57:43,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15459 states, 15458 states have (on average 3.9840859102083064) internal successors, (61586), 15458 states have internal predecessors, (61586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:43,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15459 states to 15459 states and 61586 transitions. [2023-12-02 16:57:43,847 INFO L78 Accepts]: Start accepts. Automaton has 15459 states and 61586 transitions. Word has length 58 [2023-12-02 16:57:43,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:57:43,848 INFO L495 AbstractCegarLoop]: Abstraction has 15459 states and 61586 transitions. [2023-12-02 16:57:43,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:43,848 INFO L276 IsEmpty]: Start isEmpty. Operand 15459 states and 61586 transitions. [2023-12-02 16:57:43,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:57:43,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:57:43,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:57:43,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2023-12-02 16:57:43,875 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:57:43,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:57:43,878 INFO L85 PathProgramCache]: Analyzing trace with hash -129188532, now seen corresponding path program 129 times [2023-12-02 16:57:43,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:57:43,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802350428] [2023-12-02 16:57:43,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:57:43,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:57:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:57:45,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:57:45,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:57:45,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802350428] [2023-12-02 16:57:45,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802350428] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:57:45,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:57:45,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:57:45,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164326592] [2023-12-02 16:57:45,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:57:45,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:57:45,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:57:45,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:57:45,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:57:45,265 INFO L87 Difference]: Start difference. First operand 15459 states and 61586 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:47,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:57:47,057 INFO L93 Difference]: Finished difference Result 33148 states and 124692 transitions. [2023-12-02 16:57:47,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:57:47,057 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:57:47,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:57:47,159 INFO L225 Difference]: With dead ends: 33148 [2023-12-02 16:57:47,159 INFO L226 Difference]: Without dead ends: 32889 [2023-12-02 16:57:47,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:57:47,159 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 554 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:57:47,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 968 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:57:47,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32889 states. [2023-12-02 16:57:47,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32889 to 15912. [2023-12-02 16:57:47,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15912 states, 15911 states have (on average 3.960844698636164) internal successors, (63021), 15911 states have internal predecessors, (63021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:47,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15912 states to 15912 states and 63021 transitions. [2023-12-02 16:57:47,688 INFO L78 Accepts]: Start accepts. Automaton has 15912 states and 63021 transitions. Word has length 58 [2023-12-02 16:57:47,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:57:47,688 INFO L495 AbstractCegarLoop]: Abstraction has 15912 states and 63021 transitions. [2023-12-02 16:57:47,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:47,689 INFO L276 IsEmpty]: Start isEmpty. Operand 15912 states and 63021 transitions. [2023-12-02 16:57:47,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:57:47,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:57:47,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:57:47,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2023-12-02 16:57:47,718 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:57:47,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:57:47,718 INFO L85 PathProgramCache]: Analyzing trace with hash 804785484, now seen corresponding path program 130 times [2023-12-02 16:57:47,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:57:47,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143294272] [2023-12-02 16:57:47,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:57:47,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:57:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:57:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:57:48,976 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:57:48,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143294272] [2023-12-02 16:57:48,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143294272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:57:48,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:57:48,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:57:48,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817772256] [2023-12-02 16:57:48,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:57:48,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:57:48,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:57:48,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:57:48,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:57:48,977 INFO L87 Difference]: Start difference. First operand 15912 states and 63021 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:50,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:57:50,776 INFO L93 Difference]: Finished difference Result 33181 states and 124679 transitions. [2023-12-02 16:57:50,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:57:50,776 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:57:50,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:57:50,878 INFO L225 Difference]: With dead ends: 33181 [2023-12-02 16:57:50,878 INFO L226 Difference]: Without dead ends: 33048 [2023-12-02 16:57:50,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:57:50,879 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 522 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:57:50,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 970 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:57:50,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33048 states. [2023-12-02 16:57:51,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33048 to 15933. [2023-12-02 16:57:51,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15933 states, 15932 states have (on average 3.958950539794125) internal successors, (63074), 15932 states have internal predecessors, (63074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:51,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15933 states to 15933 states and 63074 transitions. [2023-12-02 16:57:51,456 INFO L78 Accepts]: Start accepts. Automaton has 15933 states and 63074 transitions. Word has length 58 [2023-12-02 16:57:51,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:57:51,456 INFO L495 AbstractCegarLoop]: Abstraction has 15933 states and 63074 transitions. [2023-12-02 16:57:51,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:51,456 INFO L276 IsEmpty]: Start isEmpty. Operand 15933 states and 63074 transitions. [2023-12-02 16:57:51,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:57:51,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:57:51,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:57:51,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2023-12-02 16:57:51,485 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:57:51,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:57:51,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1605195478, now seen corresponding path program 131 times [2023-12-02 16:57:51,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:57:51,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34367859] [2023-12-02 16:57:51,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:57:51,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:57:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:57:52,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:57:52,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:57:52,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34367859] [2023-12-02 16:57:52,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34367859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:57:52,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:57:52,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:57:52,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271518804] [2023-12-02 16:57:52,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:57:52,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:57:52,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:57:52,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:57:52,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:57:52,786 INFO L87 Difference]: Start difference. First operand 15933 states and 63074 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:54,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:57:54,544 INFO L93 Difference]: Finished difference Result 33046 states and 124307 transitions. [2023-12-02 16:57:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:57:54,544 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:57:54,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:57:54,643 INFO L225 Difference]: With dead ends: 33046 [2023-12-02 16:57:54,643 INFO L226 Difference]: Without dead ends: 32826 [2023-12-02 16:57:54,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:57:54,644 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 474 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:57:54,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 1028 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:57:54,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32826 states. [2023-12-02 16:57:55,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32826 to 15849. [2023-12-02 16:57:55,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15849 states, 15848 states have (on average 3.9625820292781424) internal successors, (62799), 15848 states have internal predecessors, (62799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:55,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15849 states to 15849 states and 62799 transitions. [2023-12-02 16:57:55,181 INFO L78 Accepts]: Start accepts. Automaton has 15849 states and 62799 transitions. Word has length 58 [2023-12-02 16:57:55,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:57:55,182 INFO L495 AbstractCegarLoop]: Abstraction has 15849 states and 62799 transitions. [2023-12-02 16:57:55,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:55,182 INFO L276 IsEmpty]: Start isEmpty. Operand 15849 states and 62799 transitions. [2023-12-02 16:57:55,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:57:55,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:57:55,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:57:55,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2023-12-02 16:57:55,212 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:57:55,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:57:55,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2083786282, now seen corresponding path program 132 times [2023-12-02 16:57:55,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:57:55,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429198714] [2023-12-02 16:57:55,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:57:55,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:57:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:57:56,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:57:56,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:57:56,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429198714] [2023-12-02 16:57:56,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429198714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:57:56,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:57:56,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:57:56,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756676725] [2023-12-02 16:57:56,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:57:56,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:57:56,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:57:56,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:57:56,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:57:56,564 INFO L87 Difference]: Start difference. First operand 15849 states and 62799 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:58,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:57:58,444 INFO L93 Difference]: Finished difference Result 33175 states and 124673 transitions. [2023-12-02 16:57:58,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:57:58,444 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:57:58,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:57:58,542 INFO L225 Difference]: With dead ends: 33175 [2023-12-02 16:57:58,542 INFO L226 Difference]: Without dead ends: 33042 [2023-12-02 16:57:58,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=203, Invalid=397, Unknown=0, NotChecked=0, Total=600 [2023-12-02 16:57:58,543 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 556 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:57:58,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 1004 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:57:58,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33042 states. [2023-12-02 16:57:59,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33042 to 15912. [2023-12-02 16:57:59,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15912 states, 15911 states have (on average 3.9595248570171577) internal successors, (63000), 15911 states have internal predecessors, (63000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:59,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15912 states to 15912 states and 63000 transitions. [2023-12-02 16:57:59,080 INFO L78 Accepts]: Start accepts. Automaton has 15912 states and 63000 transitions. Word has length 58 [2023-12-02 16:57:59,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:57:59,081 INFO L495 AbstractCegarLoop]: Abstraction has 15912 states and 63000 transitions. [2023-12-02 16:57:59,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:57:59,081 INFO L276 IsEmpty]: Start isEmpty. Operand 15912 states and 63000 transitions. [2023-12-02 16:57:59,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:57:59,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:57:59,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:57:59,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2023-12-02 16:57:59,111 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:57:59,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:57:59,111 INFO L85 PathProgramCache]: Analyzing trace with hash -326194680, now seen corresponding path program 133 times [2023-12-02 16:57:59,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:57:59,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72901477] [2023-12-02 16:57:59,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:57:59,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:57:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:58:00,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:58:00,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:58:00,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72901477] [2023-12-02 16:58:00,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72901477] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:58:00,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:58:00,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:58:00,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323475707] [2023-12-02 16:58:00,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:58:00,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:58:00,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:58:00,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:58:00,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:58:00,335 INFO L87 Difference]: Start difference. First operand 15912 states and 63000 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:02,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:58:02,032 INFO L93 Difference]: Finished difference Result 33178 states and 124658 transitions. [2023-12-02 16:58:02,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:58:02,032 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:58:02,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:58:02,130 INFO L225 Difference]: With dead ends: 33178 [2023-12-02 16:58:02,130 INFO L226 Difference]: Without dead ends: 33021 [2023-12-02 16:58:02,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=186, Invalid=366, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:58:02,131 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 536 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:58:02,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 1003 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:58:02,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33021 states. [2023-12-02 16:58:02,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33021 to 15891. [2023-12-02 16:58:02,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15891 states, 15890 states have (on average 3.9601006922592825) internal successors, (62926), 15890 states have internal predecessors, (62926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:02,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15891 states to 15891 states and 62926 transitions. [2023-12-02 16:58:02,673 INFO L78 Accepts]: Start accepts. Automaton has 15891 states and 62926 transitions. Word has length 58 [2023-12-02 16:58:02,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:58:02,673 INFO L495 AbstractCegarLoop]: Abstraction has 15891 states and 62926 transitions. [2023-12-02 16:58:02,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:02,673 INFO L276 IsEmpty]: Start isEmpty. Operand 15891 states and 62926 transitions. [2023-12-02 16:58:02,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:58:02,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:58:02,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:58:02,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2023-12-02 16:58:02,704 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:58:02,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:58:02,704 INFO L85 PathProgramCache]: Analyzing trace with hash -2008031590, now seen corresponding path program 134 times [2023-12-02 16:58:02,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:58:02,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054176358] [2023-12-02 16:58:02,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:58:02,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:58:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:58:03,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:58:03,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:58:03,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054176358] [2023-12-02 16:58:03,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054176358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:58:03,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:58:03,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:58:03,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245949698] [2023-12-02 16:58:03,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:58:03,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:58:03,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:58:03,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:58:03,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:58:03,883 INFO L87 Difference]: Start difference. First operand 15891 states and 62926 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:05,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:58:05,700 INFO L93 Difference]: Finished difference Result 33019 states and 124227 transitions. [2023-12-02 16:58:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:58:05,700 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:58:05,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:58:05,797 INFO L225 Difference]: With dead ends: 33019 [2023-12-02 16:58:05,797 INFO L226 Difference]: Without dead ends: 32433 [2023-12-02 16:58:05,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=187, Invalid=365, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:58:05,797 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 518 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:58:05,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 934 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:58:05,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32433 states. [2023-12-02 16:58:06,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32433 to 15531. [2023-12-02 16:58:06,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15531 states, 15530 states have (on average 3.9795235028976177) internal successors, (61802), 15530 states have internal predecessors, (61802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:06,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15531 states to 15531 states and 61802 transitions. [2023-12-02 16:58:06,400 INFO L78 Accepts]: Start accepts. Automaton has 15531 states and 61802 transitions. Word has length 58 [2023-12-02 16:58:06,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:58:06,400 INFO L495 AbstractCegarLoop]: Abstraction has 15531 states and 61802 transitions. [2023-12-02 16:58:06,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:06,400 INFO L276 IsEmpty]: Start isEmpty. Operand 15531 states and 61802 transitions. [2023-12-02 16:58:06,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:58:06,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:58:06,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:58:06,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2023-12-02 16:58:06,430 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:58:06,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:58:06,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1362602582, now seen corresponding path program 135 times [2023-12-02 16:58:06,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:58:06,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274649017] [2023-12-02 16:58:06,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:58:06,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:58:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:58:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:58:07,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:58:07,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274649017] [2023-12-02 16:58:07,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274649017] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:58:07,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:58:07,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:58:07,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012126297] [2023-12-02 16:58:07,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:58:07,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:58:07,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:58:07,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:58:07,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:58:07,821 INFO L87 Difference]: Start difference. First operand 15531 states and 61802 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:09,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:58:09,543 INFO L93 Difference]: Finished difference Result 32674 states and 123219 transitions. [2023-12-02 16:58:09,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:58:09,544 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:58:09,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:58:09,640 INFO L225 Difference]: With dead ends: 32674 [2023-12-02 16:58:09,641 INFO L226 Difference]: Without dead ends: 32541 [2023-12-02 16:58:09,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:58:09,641 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 542 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:58:09,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 1016 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:58:09,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32541 states. [2023-12-02 16:58:10,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32541 to 15645. [2023-12-02 16:58:10,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15645 states, 15644 states have (on average 3.9782025057530044) internal successors, (62235), 15644 states have internal predecessors, (62235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:10,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15645 states to 15645 states and 62235 transitions. [2023-12-02 16:58:10,175 INFO L78 Accepts]: Start accepts. Automaton has 15645 states and 62235 transitions. Word has length 58 [2023-12-02 16:58:10,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:58:10,175 INFO L495 AbstractCegarLoop]: Abstraction has 15645 states and 62235 transitions. [2023-12-02 16:58:10,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:10,175 INFO L276 IsEmpty]: Start isEmpty. Operand 15645 states and 62235 transitions. [2023-12-02 16:58:10,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:58:10,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:58:10,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:58:10,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2023-12-02 16:58:10,205 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:58:10,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:58:10,206 INFO L85 PathProgramCache]: Analyzing trace with hash 707760010, now seen corresponding path program 136 times [2023-12-02 16:58:10,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:58:10,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395793164] [2023-12-02 16:58:10,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:58:10,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:58:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:58:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:58:11,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:58:11,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395793164] [2023-12-02 16:58:11,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395793164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:58:11,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:58:11,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:58:11,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85197710] [2023-12-02 16:58:11,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:58:11,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:58:11,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:58:11,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:58:11,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:58:11,533 INFO L87 Difference]: Start difference. First operand 15645 states and 62235 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:13,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:58:13,453 INFO L93 Difference]: Finished difference Result 32539 states and 122856 transitions. [2023-12-02 16:58:13,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:58:13,453 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:58:13,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:58:13,549 INFO L225 Difference]: With dead ends: 32539 [2023-12-02 16:58:13,549 INFO L226 Difference]: Without dead ends: 32412 [2023-12-02 16:58:13,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:58:13,550 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 469 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1523 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:58:13,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1058 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1523 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:58:13,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32412 states. [2023-12-02 16:58:14,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32412 to 15633. [2023-12-02 16:58:14,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15633 states, 15632 states have (on average 3.9784416581371547) internal successors, (62191), 15632 states have internal predecessors, (62191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:14,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15633 states to 15633 states and 62191 transitions. [2023-12-02 16:58:14,079 INFO L78 Accepts]: Start accepts. Automaton has 15633 states and 62191 transitions. Word has length 58 [2023-12-02 16:58:14,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:58:14,079 INFO L495 AbstractCegarLoop]: Abstraction has 15633 states and 62191 transitions. [2023-12-02 16:58:14,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:14,079 INFO L276 IsEmpty]: Start isEmpty. Operand 15633 states and 62191 transitions. [2023-12-02 16:58:14,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:58:14,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:58:14,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:58:14,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2023-12-02 16:58:14,108 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:58:14,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:58:14,109 INFO L85 PathProgramCache]: Analyzing trace with hash 744510380, now seen corresponding path program 137 times [2023-12-02 16:58:14,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:58:14,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406576163] [2023-12-02 16:58:14,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:58:14,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:58:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:58:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:58:15,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:58:15,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406576163] [2023-12-02 16:58:15,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406576163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:58:15,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:58:15,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:58:15,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039427555] [2023-12-02 16:58:15,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:58:15,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:58:15,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:58:15,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:58:15,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:58:15,356 INFO L87 Difference]: Start difference. First operand 15633 states and 62191 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:17,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:58:17,105 INFO L93 Difference]: Finished difference Result 32671 states and 123244 transitions. [2023-12-02 16:58:17,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:58:17,106 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:58:17,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:58:17,201 INFO L225 Difference]: With dead ends: 32671 [2023-12-02 16:58:17,201 INFO L226 Difference]: Without dead ends: 32376 [2023-12-02 16:58:17,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:58:17,202 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 485 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:58:17,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 994 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:58:17,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32376 states. [2023-12-02 16:58:17,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32376 to 15597. [2023-12-02 16:58:17,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15597 states, 15596 states have (on average 3.9787766093870225) internal successors, (62053), 15596 states have internal predecessors, (62053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:17,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15597 states to 15597 states and 62053 transitions. [2023-12-02 16:58:17,727 INFO L78 Accepts]: Start accepts. Automaton has 15597 states and 62053 transitions. Word has length 58 [2023-12-02 16:58:17,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:58:17,728 INFO L495 AbstractCegarLoop]: Abstraction has 15597 states and 62053 transitions. [2023-12-02 16:58:17,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:17,728 INFO L276 IsEmpty]: Start isEmpty. Operand 15597 states and 62053 transitions. [2023-12-02 16:58:17,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:58:17,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:58:17,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:58:17,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2023-12-02 16:58:17,757 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:58:17,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:58:17,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1847829930, now seen corresponding path program 138 times [2023-12-02 16:58:17,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:58:17,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063629398] [2023-12-02 16:58:17,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:58:17,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:58:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:58:19,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:58:19,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:58:19,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063629398] [2023-12-02 16:58:19,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063629398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:58:19,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:58:19,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:58:19,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435934153] [2023-12-02 16:58:19,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:58:19,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:58:19,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:58:19,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:58:19,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:58:19,029 INFO L87 Difference]: Start difference. First operand 15597 states and 62053 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:20,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:58:20,761 INFO L93 Difference]: Finished difference Result 32857 states and 123696 transitions. [2023-12-02 16:58:20,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:58:20,761 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:58:20,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:58:20,857 INFO L225 Difference]: With dead ends: 32857 [2023-12-02 16:58:20,857 INFO L226 Difference]: Without dead ends: 32724 [2023-12-02 16:58:20,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:58:20,857 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 580 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:58:20,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 960 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:58:20,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32724 states. [2023-12-02 16:58:21,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32724 to 15615. [2023-12-02 16:58:21,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15615 states, 15614 states have (on average 3.9778403996413476) internal successors, (62110), 15614 states have internal predecessors, (62110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:21,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15615 states to 15615 states and 62110 transitions. [2023-12-02 16:58:21,386 INFO L78 Accepts]: Start accepts. Automaton has 15615 states and 62110 transitions. Word has length 58 [2023-12-02 16:58:21,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:58:21,387 INFO L495 AbstractCegarLoop]: Abstraction has 15615 states and 62110 transitions. [2023-12-02 16:58:21,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:21,387 INFO L276 IsEmpty]: Start isEmpty. Operand 15615 states and 62110 transitions. [2023-12-02 16:58:21,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:58:21,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:58:21,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:58:21,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2023-12-02 16:58:21,417 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:58:21,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:58:21,417 INFO L85 PathProgramCache]: Analyzing trace with hash -376774774, now seen corresponding path program 139 times [2023-12-02 16:58:21,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:58:21,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427800743] [2023-12-02 16:58:21,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:58:21,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:58:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:58:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:58:22,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:58:22,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427800743] [2023-12-02 16:58:22,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427800743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:58:22,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:58:22,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:58:22,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424241987] [2023-12-02 16:58:22,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:58:22,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:58:22,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:58:22,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:58:22,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:58:22,715 INFO L87 Difference]: Start difference. First operand 15615 states and 62110 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:24,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:58:24,415 INFO L93 Difference]: Finished difference Result 32839 states and 123633 transitions. [2023-12-02 16:58:24,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:58:24,415 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:58:24,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:58:24,512 INFO L225 Difference]: With dead ends: 32839 [2023-12-02 16:58:24,512 INFO L226 Difference]: Without dead ends: 32712 [2023-12-02 16:58:24,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:58:24,512 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 533 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:58:24,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 1008 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:58:24,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32712 states. [2023-12-02 16:58:24,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32712 to 15603. [2023-12-02 16:58:24,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15603 states, 15602 states have (on average 3.9784642994487887) internal successors, (62072), 15602 states have internal predecessors, (62072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:25,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15603 states to 15603 states and 62072 transitions. [2023-12-02 16:58:25,039 INFO L78 Accepts]: Start accepts. Automaton has 15603 states and 62072 transitions. Word has length 58 [2023-12-02 16:58:25,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:58:25,039 INFO L495 AbstractCegarLoop]: Abstraction has 15603 states and 62072 transitions. [2023-12-02 16:58:25,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:25,039 INFO L276 IsEmpty]: Start isEmpty. Operand 15603 states and 62072 transitions. [2023-12-02 16:58:25,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:58:25,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:58:25,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:58:25,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2023-12-02 16:58:25,069 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:58:25,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:58:25,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1223999608, now seen corresponding path program 140 times [2023-12-02 16:58:25,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:58:25,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736633162] [2023-12-02 16:58:25,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:58:25,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:58:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:58:26,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:58:26,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:58:26,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736633162] [2023-12-02 16:58:26,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736633162] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:58:26,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:58:26,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:58:26,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344144899] [2023-12-02 16:58:26,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:58:26,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:58:26,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:58:26,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:58:26,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:58:26,301 INFO L87 Difference]: Start difference. First operand 15603 states and 62072 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:27,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:58:27,923 INFO L93 Difference]: Finished difference Result 32869 states and 123726 transitions. [2023-12-02 16:58:27,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:58:27,923 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:58:27,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:58:28,117 INFO L225 Difference]: With dead ends: 32869 [2023-12-02 16:58:28,117 INFO L226 Difference]: Without dead ends: 32736 [2023-12-02 16:58:28,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:58:28,117 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 561 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:58:28,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 949 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:58:28,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32736 states. [2023-12-02 16:58:28,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32736 to 15624. [2023-12-02 16:58:28,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15624 states, 15623 states have (on average 3.9765089931511235) internal successors, (62125), 15623 states have internal predecessors, (62125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:28,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15624 states to 15624 states and 62125 transitions. [2023-12-02 16:58:28,618 INFO L78 Accepts]: Start accepts. Automaton has 15624 states and 62125 transitions. Word has length 58 [2023-12-02 16:58:28,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:58:28,618 INFO L495 AbstractCegarLoop]: Abstraction has 15624 states and 62125 transitions. [2023-12-02 16:58:28,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:28,618 INFO L276 IsEmpty]: Start isEmpty. Operand 15624 states and 62125 transitions. [2023-12-02 16:58:28,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:58:28,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:58:28,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:58:28,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2023-12-02 16:58:28,648 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:58:28,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:58:28,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2028023274, now seen corresponding path program 141 times [2023-12-02 16:58:28,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:58:28,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800595302] [2023-12-02 16:58:28,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:58:28,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:58:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:58:29,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:58:29,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:58:29,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800595302] [2023-12-02 16:58:29,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800595302] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:58:29,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:58:29,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:58:29,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577482599] [2023-12-02 16:58:29,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:58:29,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:58:29,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:58:29,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:58:29,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:58:29,994 INFO L87 Difference]: Start difference. First operand 15624 states and 62125 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:31,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:58:31,871 INFO L93 Difference]: Finished difference Result 32779 states and 123487 transitions. [2023-12-02 16:58:31,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:58:31,871 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:58:31,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:58:31,969 INFO L225 Difference]: With dead ends: 32779 [2023-12-02 16:58:31,969 INFO L226 Difference]: Without dead ends: 32622 [2023-12-02 16:58:31,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:58:31,969 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 526 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:58:31,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 972 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:58:32,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32622 states. [2023-12-02 16:58:32,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32622 to 15603. [2023-12-02 16:58:32,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15603 states, 15602 states have (on average 3.978079733367517) internal successors, (62066), 15602 states have internal predecessors, (62066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:32,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15603 states to 15603 states and 62066 transitions. [2023-12-02 16:58:32,507 INFO L78 Accepts]: Start accepts. Automaton has 15603 states and 62066 transitions. Word has length 58 [2023-12-02 16:58:32,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:58:32,507 INFO L495 AbstractCegarLoop]: Abstraction has 15603 states and 62066 transitions. [2023-12-02 16:58:32,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:32,508 INFO L276 IsEmpty]: Start isEmpty. Operand 15603 states and 62066 transitions. [2023-12-02 16:58:32,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:58:32,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:58:32,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:58:32,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2023-12-02 16:58:32,537 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:58:32,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:58:32,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1651686760, now seen corresponding path program 142 times [2023-12-02 16:58:32,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:58:32,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880545784] [2023-12-02 16:58:32,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:58:32,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:58:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:58:33,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:58:33,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:58:33,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880545784] [2023-12-02 16:58:33,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880545784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:58:33,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:58:33,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:58:33,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443300287] [2023-12-02 16:58:33,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:58:33,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:58:33,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:58:33,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:58:33,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:58:33,875 INFO L87 Difference]: Start difference. First operand 15603 states and 62066 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:35,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:58:35,607 INFO L93 Difference]: Finished difference Result 32668 states and 123162 transitions. [2023-12-02 16:58:35,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:58:35,608 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:58:35,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:58:35,705 INFO L225 Difference]: With dead ends: 32668 [2023-12-02 16:58:35,705 INFO L226 Difference]: Without dead ends: 32553 [2023-12-02 16:58:35,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:58:35,706 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 529 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:58:35,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 907 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:58:35,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32553 states. [2023-12-02 16:58:36,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32553 to 15615. [2023-12-02 16:58:36,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15615 states, 15614 states have (on average 3.977071858588446) internal successors, (62098), 15614 states have internal predecessors, (62098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:36,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15615 states to 15615 states and 62098 transitions. [2023-12-02 16:58:36,243 INFO L78 Accepts]: Start accepts. Automaton has 15615 states and 62098 transitions. Word has length 58 [2023-12-02 16:58:36,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:58:36,243 INFO L495 AbstractCegarLoop]: Abstraction has 15615 states and 62098 transitions. [2023-12-02 16:58:36,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:36,243 INFO L276 IsEmpty]: Start isEmpty. Operand 15615 states and 62098 transitions. [2023-12-02 16:58:36,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:58:36,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:58:36,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:58:36,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2023-12-02 16:58:36,273 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:58:36,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:58:36,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1218351158, now seen corresponding path program 143 times [2023-12-02 16:58:36,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:58:36,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821726789] [2023-12-02 16:58:36,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:58:36,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:58:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:58:37,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:58:37,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:58:37,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821726789] [2023-12-02 16:58:37,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821726789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:58:37,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:58:37,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:58:37,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121064369] [2023-12-02 16:58:37,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:58:37,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:58:37,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:58:37,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:58:37,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:58:37,464 INFO L87 Difference]: Start difference. First operand 15615 states and 62098 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:39,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:58:39,182 INFO L93 Difference]: Finished difference Result 32596 states and 122983 transitions. [2023-12-02 16:58:39,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:58:39,183 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:58:39,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:58:39,280 INFO L225 Difference]: With dead ends: 32596 [2023-12-02 16:58:39,280 INFO L226 Difference]: Without dead ends: 32442 [2023-12-02 16:58:39,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:58:39,280 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 472 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:58:39,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 885 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:58:39,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32442 states. [2023-12-02 16:58:39,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32442 to 15597. [2023-12-02 16:58:39,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15597 states, 15596 states have (on average 3.978391895357784) internal successors, (62047), 15596 states have internal predecessors, (62047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:39,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15597 states to 15597 states and 62047 transitions. [2023-12-02 16:58:39,810 INFO L78 Accepts]: Start accepts. Automaton has 15597 states and 62047 transitions. Word has length 58 [2023-12-02 16:58:39,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:58:39,810 INFO L495 AbstractCegarLoop]: Abstraction has 15597 states and 62047 transitions. [2023-12-02 16:58:39,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:39,811 INFO L276 IsEmpty]: Start isEmpty. Operand 15597 states and 62047 transitions. [2023-12-02 16:58:39,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:58:39,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:58:39,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:58:39,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2023-12-02 16:58:39,840 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:58:39,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:58:39,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1733039252, now seen corresponding path program 144 times [2023-12-02 16:58:39,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:58:39,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502074940] [2023-12-02 16:58:39,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:58:39,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:58:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:58:40,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:58:40,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:58:40,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502074940] [2023-12-02 16:58:40,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502074940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:58:40,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:58:40,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:58:40,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870061759] [2023-12-02 16:58:40,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:58:40,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:58:40,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:58:40,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:58:40,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:58:40,989 INFO L87 Difference]: Start difference. First operand 15597 states and 62047 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:42,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:58:42,824 INFO L93 Difference]: Finished difference Result 32899 states and 123880 transitions. [2023-12-02 16:58:42,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:58:42,825 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:58:42,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:58:42,922 INFO L225 Difference]: With dead ends: 32899 [2023-12-02 16:58:42,923 INFO L226 Difference]: Without dead ends: 32640 [2023-12-02 16:58:42,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:58:42,923 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 532 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:58:42,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1030 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:58:42,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32640 states. [2023-12-02 16:58:43,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32640 to 15660. [2023-12-02 16:58:43,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15660 states, 15659 states have (on average 3.9725397534963918) internal successors, (62206), 15659 states have internal predecessors, (62206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:43,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15660 states to 15660 states and 62206 transitions. [2023-12-02 16:58:43,448 INFO L78 Accepts]: Start accepts. Automaton has 15660 states and 62206 transitions. Word has length 58 [2023-12-02 16:58:43,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:58:43,448 INFO L495 AbstractCegarLoop]: Abstraction has 15660 states and 62206 transitions. [2023-12-02 16:58:43,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:43,448 INFO L276 IsEmpty]: Start isEmpty. Operand 15660 states and 62206 transitions. [2023-12-02 16:58:43,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:58:43,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:58:43,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:58:43,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2023-12-02 16:58:43,476 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:58:43,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:58:43,476 INFO L85 PathProgramCache]: Analyzing trace with hash 781960458, now seen corresponding path program 145 times [2023-12-02 16:58:43,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:58:43,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864929727] [2023-12-02 16:58:43,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:58:43,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:58:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:58:44,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:58:44,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:58:44,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864929727] [2023-12-02 16:58:44,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864929727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:58:44,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:58:44,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:58:44,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598656268] [2023-12-02 16:58:44,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:58:44,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:58:44,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:58:44,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:58:44,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:58:44,861 INFO L87 Difference]: Start difference. First operand 15660 states and 62206 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:46,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:58:46,527 INFO L93 Difference]: Finished difference Result 32797 states and 123516 transitions. [2023-12-02 16:58:46,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:58:46,527 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:58:46,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:58:46,622 INFO L225 Difference]: With dead ends: 32797 [2023-12-02 16:58:46,623 INFO L226 Difference]: Without dead ends: 32664 [2023-12-02 16:58:46,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:58:46,623 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 544 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:58:46,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 939 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:58:46,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32664 states. [2023-12-02 16:58:47,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32664 to 15681. [2023-12-02 16:58:47,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15681 states, 15680 states have (on average 3.9705994897959185) internal successors, (62259), 15680 states have internal predecessors, (62259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:47,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15681 states to 15681 states and 62259 transitions. [2023-12-02 16:58:47,145 INFO L78 Accepts]: Start accepts. Automaton has 15681 states and 62259 transitions. Word has length 58 [2023-12-02 16:58:47,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:58:47,145 INFO L495 AbstractCegarLoop]: Abstraction has 15681 states and 62259 transitions. [2023-12-02 16:58:47,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:47,145 INFO L276 IsEmpty]: Start isEmpty. Operand 15681 states and 62259 transitions. [2023-12-02 16:58:47,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:58:47,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:58:47,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:58:47,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2023-12-02 16:58:47,175 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:58:47,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:58:47,175 INFO L85 PathProgramCache]: Analyzing trace with hash -260983956, now seen corresponding path program 146 times [2023-12-02 16:58:47,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:58:47,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302521294] [2023-12-02 16:58:47,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:58:47,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:58:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:58:48,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:58:48,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:58:48,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302521294] [2023-12-02 16:58:48,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302521294] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:58:48,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:58:48,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:58:48,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505299797] [2023-12-02 16:58:48,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:58:48,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:58:48,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:58:48,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:58:48,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:58:48,445 INFO L87 Difference]: Start difference. First operand 15681 states and 62259 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:50,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:58:50,207 INFO L93 Difference]: Finished difference Result 32662 states and 123144 transitions. [2023-12-02 16:58:50,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:58:50,207 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:58:50,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:58:50,404 INFO L225 Difference]: With dead ends: 32662 [2023-12-02 16:58:50,404 INFO L226 Difference]: Without dead ends: 32424 [2023-12-02 16:58:50,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:58:50,404 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 482 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:58:50,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 1018 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:58:50,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32424 states. [2023-12-02 16:58:50,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32424 to 15579. [2023-12-02 16:58:50,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15579 states, 15578 states have (on average 3.978559506997047) internal successors, (61978), 15578 states have internal predecessors, (61978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:50,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15579 states to 15579 states and 61978 transitions. [2023-12-02 16:58:50,898 INFO L78 Accepts]: Start accepts. Automaton has 15579 states and 61978 transitions. Word has length 58 [2023-12-02 16:58:50,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:58:50,898 INFO L495 AbstractCegarLoop]: Abstraction has 15579 states and 61978 transitions. [2023-12-02 16:58:50,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:50,898 INFO L276 IsEmpty]: Start isEmpty. Operand 15579 states and 61978 transitions. [2023-12-02 16:58:50,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:58:50,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:58:50,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:58:50,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2023-12-02 16:58:50,926 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:58:50,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:58:50,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1371007112, now seen corresponding path program 147 times [2023-12-02 16:58:50,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:58:50,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514394454] [2023-12-02 16:58:50,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:58:50,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:58:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:58:52,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:58:52,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:58:52,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514394454] [2023-12-02 16:58:52,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514394454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:58:52,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:58:52,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:58:52,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610711030] [2023-12-02 16:58:52,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:58:52,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:58:52,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:58:52,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:58:52,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:58:52,321 INFO L87 Difference]: Start difference. First operand 15579 states and 61978 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:54,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:58:54,307 INFO L93 Difference]: Finished difference Result 33106 states and 124500 transitions. [2023-12-02 16:58:54,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 16:58:54,308 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:58:54,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:58:54,402 INFO L225 Difference]: With dead ends: 33106 [2023-12-02 16:58:54,402 INFO L226 Difference]: Without dead ends: 32973 [2023-12-02 16:58:54,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=214, Invalid=436, Unknown=0, NotChecked=0, Total=650 [2023-12-02 16:58:54,402 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 529 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:58:54,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 1076 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:58:54,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32973 states. [2023-12-02 16:58:54,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32973 to 15609. [2023-12-02 16:58:54,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15609 states, 15608 states have (on average 3.97776781137878) internal successors, (62085), 15608 states have internal predecessors, (62085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:54,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15609 states to 15609 states and 62085 transitions. [2023-12-02 16:58:54,934 INFO L78 Accepts]: Start accepts. Automaton has 15609 states and 62085 transitions. Word has length 58 [2023-12-02 16:58:54,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:58:54,935 INFO L495 AbstractCegarLoop]: Abstraction has 15609 states and 62085 transitions. [2023-12-02 16:58:54,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:54,935 INFO L276 IsEmpty]: Start isEmpty. Operand 15609 states and 62085 transitions. [2023-12-02 16:58:54,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:58:54,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:58:54,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:58:54,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2023-12-02 16:58:54,964 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:58:54,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:58:54,965 INFO L85 PathProgramCache]: Analyzing trace with hash -853597592, now seen corresponding path program 148 times [2023-12-02 16:58:54,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:58:54,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171067456] [2023-12-02 16:58:54,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:58:54,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:58:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:58:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:58:56,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:58:56,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171067456] [2023-12-02 16:58:56,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171067456] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:58:56,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:58:56,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:58:56,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448828001] [2023-12-02 16:58:56,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:58:56,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:58:56,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:58:56,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:58:56,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:58:56,274 INFO L87 Difference]: Start difference. First operand 15609 states and 62085 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:57,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:58:57,956 INFO L93 Difference]: Finished difference Result 32962 states and 124056 transitions. [2023-12-02 16:58:57,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:58:57,956 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:58:57,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:58:58,050 INFO L225 Difference]: With dead ends: 32962 [2023-12-02 16:58:58,050 INFO L226 Difference]: Without dead ends: 32835 [2023-12-02 16:58:58,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2023-12-02 16:58:58,051 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 572 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:58:58,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 996 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:58:58,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32835 states. [2023-12-02 16:58:58,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32835 to 15597. [2023-12-02 16:58:58,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15597 states, 15596 states have (on average 3.978391895357784) internal successors, (62047), 15596 states have internal predecessors, (62047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:58,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15597 states to 15597 states and 62047 transitions. [2023-12-02 16:58:58,579 INFO L78 Accepts]: Start accepts. Automaton has 15597 states and 62047 transitions. Word has length 58 [2023-12-02 16:58:58,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:58:58,579 INFO L495 AbstractCegarLoop]: Abstraction has 15597 states and 62047 transitions. [2023-12-02 16:58:58,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:58:58,579 INFO L276 IsEmpty]: Start isEmpty. Operand 15597 states and 62047 transitions. [2023-12-02 16:58:58,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:58:58,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:58:58,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:58:58,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2023-12-02 16:58:58,608 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:58:58,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:58:58,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1700822426, now seen corresponding path program 149 times [2023-12-02 16:58:58,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:58:58,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451588876] [2023-12-02 16:58:58,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:58:58,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:58:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:58:59,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:58:59,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:58:59,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451588876] [2023-12-02 16:58:59,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451588876] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:58:59,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:58:59,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:58:59,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289403173] [2023-12-02 16:58:59,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:58:59,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:58:59,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:58:59,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:58:59,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:58:59,789 INFO L87 Difference]: Start difference. First operand 15597 states and 62047 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:01,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:59:01,460 INFO L93 Difference]: Finished difference Result 33127 states and 124500 transitions. [2023-12-02 16:59:01,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:59:01,460 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:59:01,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:59:01,556 INFO L225 Difference]: With dead ends: 33127 [2023-12-02 16:59:01,556 INFO L226 Difference]: Without dead ends: 32994 [2023-12-02 16:59:01,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:59:01,556 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 597 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:59:01,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 955 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:59:01,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32994 states. [2023-12-02 16:59:02,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32994 to 15618. [2023-12-02 16:59:02,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15618 states, 15617 states have (on average 3.976435935198822) internal successors, (62100), 15617 states have internal predecessors, (62100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:02,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15618 states to 15618 states and 62100 transitions. [2023-12-02 16:59:02,080 INFO L78 Accepts]: Start accepts. Automaton has 15618 states and 62100 transitions. Word has length 58 [2023-12-02 16:59:02,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:59:02,081 INFO L495 AbstractCegarLoop]: Abstraction has 15618 states and 62100 transitions. [2023-12-02 16:59:02,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:02,081 INFO L276 IsEmpty]: Start isEmpty. Operand 15618 states and 62100 transitions. [2023-12-02 16:59:02,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:59:02,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:59:02,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:59:02,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2023-12-02 16:59:02,111 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:59:02,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:59:02,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1551200456, now seen corresponding path program 150 times [2023-12-02 16:59:02,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:59:02,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675277054] [2023-12-02 16:59:02,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:59:02,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:59:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:59:03,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:59:03,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:59:03,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675277054] [2023-12-02 16:59:03,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675277054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:59:03,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:59:03,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:59:03,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353148409] [2023-12-02 16:59:03,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:59:03,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:59:03,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:59:03,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:59:03,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:59:03,425 INFO L87 Difference]: Start difference. First operand 15618 states and 62100 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:05,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:59:05,074 INFO L93 Difference]: Finished difference Result 33037 states and 124261 transitions. [2023-12-02 16:59:05,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:59:05,075 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:59:05,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:59:05,163 INFO L225 Difference]: With dead ends: 33037 [2023-12-02 16:59:05,164 INFO L226 Difference]: Without dead ends: 32880 [2023-12-02 16:59:05,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:59:05,164 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 562 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:59:05,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 873 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:59:05,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32880 states. [2023-12-02 16:59:05,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32880 to 15597. [2023-12-02 16:59:05,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15597 states, 15596 states have (on average 3.978007181328546) internal successors, (62041), 15596 states have internal predecessors, (62041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:05,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15597 states to 15597 states and 62041 transitions. [2023-12-02 16:59:05,656 INFO L78 Accepts]: Start accepts. Automaton has 15597 states and 62041 transitions. Word has length 58 [2023-12-02 16:59:05,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:59:05,656 INFO L495 AbstractCegarLoop]: Abstraction has 15597 states and 62041 transitions. [2023-12-02 16:59:05,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:05,656 INFO L276 IsEmpty]: Start isEmpty. Operand 15597 states and 62041 transitions. [2023-12-02 16:59:05,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:59:05,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:59:05,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:59:05,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2023-12-02 16:59:05,683 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:59:05,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:59:05,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1174863942, now seen corresponding path program 151 times [2023-12-02 16:59:05,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:59:05,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371666804] [2023-12-02 16:59:05,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:59:05,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:59:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:59:06,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:59:06,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:59:06,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371666804] [2023-12-02 16:59:06,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371666804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:59:06,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:59:06,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:59:06,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191090260] [2023-12-02 16:59:06,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:59:06,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:59:06,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:59:06,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:59:06,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:59:06,943 INFO L87 Difference]: Start difference. First operand 15597 states and 62041 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:08,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:59:08,695 INFO L93 Difference]: Finished difference Result 33100 states and 124413 transitions. [2023-12-02 16:59:08,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:59:08,696 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:59:08,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:59:08,784 INFO L225 Difference]: With dead ends: 33100 [2023-12-02 16:59:08,784 INFO L226 Difference]: Without dead ends: 32985 [2023-12-02 16:59:08,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:59:08,784 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 617 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 1356 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:59:08,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 950 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1356 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:59:08,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32985 states. [2023-12-02 16:59:09,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32985 to 15609. [2023-12-02 16:59:09,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15609 states, 15608 states have (on average 3.9769989748846744) internal successors, (62073), 15608 states have internal predecessors, (62073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:09,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15609 states to 15609 states and 62073 transitions. [2023-12-02 16:59:09,257 INFO L78 Accepts]: Start accepts. Automaton has 15609 states and 62073 transitions. Word has length 58 [2023-12-02 16:59:09,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:59:09,257 INFO L495 AbstractCegarLoop]: Abstraction has 15609 states and 62073 transitions. [2023-12-02 16:59:09,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:09,257 INFO L276 IsEmpty]: Start isEmpty. Operand 15609 states and 62073 transitions. [2023-12-02 16:59:09,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:59:09,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:59:09,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:59:09,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2023-12-02 16:59:09,284 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:59:09,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:59:09,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1695173976, now seen corresponding path program 152 times [2023-12-02 16:59:09,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:59:09,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551562592] [2023-12-02 16:59:09,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:59:09,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:59:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:59:10,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:59:10,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:59:10,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551562592] [2023-12-02 16:59:10,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551562592] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:59:10,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:59:10,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:59:10,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949656346] [2023-12-02 16:59:10,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:59:10,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:59:10,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:59:10,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:59:10,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:59:10,410 INFO L87 Difference]: Start difference. First operand 15609 states and 62073 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:12,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:59:12,264 INFO L93 Difference]: Finished difference Result 33028 states and 124234 transitions. [2023-12-02 16:59:12,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:59:12,265 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:59:12,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:59:12,354 INFO L225 Difference]: With dead ends: 33028 [2023-12-02 16:59:12,354 INFO L226 Difference]: Without dead ends: 32874 [2023-12-02 16:59:12,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:59:12,355 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 558 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:59:12,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 981 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1432 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:59:12,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32874 states. [2023-12-02 16:59:12,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32874 to 15591. [2023-12-02 16:59:12,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15591 states, 15590 states have (on average 3.9783194355355995) internal successors, (62022), 15590 states have internal predecessors, (62022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:12,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15591 states to 15591 states and 62022 transitions. [2023-12-02 16:59:12,834 INFO L78 Accepts]: Start accepts. Automaton has 15591 states and 62022 transitions. Word has length 58 [2023-12-02 16:59:12,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:59:12,835 INFO L495 AbstractCegarLoop]: Abstraction has 15591 states and 62022 transitions. [2023-12-02 16:59:12,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:12,835 INFO L276 IsEmpty]: Start isEmpty. Operand 15591 states and 62022 transitions. [2023-12-02 16:59:12,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:59:12,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:59:12,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:59:12,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2023-12-02 16:59:12,861 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:59:12,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:59:12,861 INFO L85 PathProgramCache]: Analyzing trace with hash -915666216, now seen corresponding path program 153 times [2023-12-02 16:59:12,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:59:12,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049654967] [2023-12-02 16:59:12,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:59:12,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:59:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:59:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:59:14,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:59:14,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049654967] [2023-12-02 16:59:14,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049654967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:59:14,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:59:14,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:59:14,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071378219] [2023-12-02 16:59:14,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:59:14,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:59:14,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:59:14,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:59:14,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:59:14,141 INFO L87 Difference]: Start difference. First operand 15591 states and 62022 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:15,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:59:15,932 INFO L93 Difference]: Finished difference Result 33391 states and 125353 transitions. [2023-12-02 16:59:15,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 16:59:15,932 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:59:15,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:59:16,021 INFO L225 Difference]: With dead ends: 33391 [2023-12-02 16:59:16,021 INFO L226 Difference]: Without dead ends: 33258 [2023-12-02 16:59:16,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=218, Invalid=432, Unknown=0, NotChecked=0, Total=650 [2023-12-02 16:59:16,021 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 533 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:59:16,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 964 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:59:16,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33258 states. [2023-12-02 16:59:16,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33258 to 15654. [2023-12-02 16:59:16,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15654 states, 15653 states have (on average 3.9751485338273813) internal successors, (62223), 15653 states have internal predecessors, (62223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:16,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15654 states to 15654 states and 62223 transitions. [2023-12-02 16:59:16,498 INFO L78 Accepts]: Start accepts. Automaton has 15654 states and 62223 transitions. Word has length 58 [2023-12-02 16:59:16,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:59:16,498 INFO L495 AbstractCegarLoop]: Abstraction has 15654 states and 62223 transitions. [2023-12-02 16:59:16,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:16,498 INFO L276 IsEmpty]: Start isEmpty. Operand 15654 states and 62223 transitions. [2023-12-02 16:59:16,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:59:16,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:59:16,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:59:16,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2023-12-02 16:59:16,527 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:59:16,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:59:16,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1958610630, now seen corresponding path program 154 times [2023-12-02 16:59:16,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:59:16,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959609330] [2023-12-02 16:59:16,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:59:16,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:59:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:59:17,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:59:17,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:59:17,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959609330] [2023-12-02 16:59:17,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959609330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:59:17,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:59:17,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:59:17,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759114481] [2023-12-02 16:59:17,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:59:17,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:59:17,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:59:17,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:59:17,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:59:17,816 INFO L87 Difference]: Start difference. First operand 15654 states and 62223 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:19,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:59:19,524 INFO L93 Difference]: Finished difference Result 33268 states and 124957 transitions. [2023-12-02 16:59:19,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:59:19,525 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:59:19,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:59:19,614 INFO L225 Difference]: With dead ends: 33268 [2023-12-02 16:59:19,614 INFO L226 Difference]: Without dead ends: 33111 [2023-12-02 16:59:19,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=399, Unknown=0, NotChecked=0, Total=600 [2023-12-02 16:59:19,614 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 520 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:59:19,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 1008 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:59:19,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33111 states. [2023-12-02 16:59:20,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33111 to 15633. [2023-12-02 16:59:20,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15633 states, 15632 states have (on average 3.975754861821904) internal successors, (62149), 15632 states have internal predecessors, (62149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:20,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15633 states to 15633 states and 62149 transitions. [2023-12-02 16:59:20,113 INFO L78 Accepts]: Start accepts. Automaton has 15633 states and 62149 transitions. Word has length 58 [2023-12-02 16:59:20,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:59:20,113 INFO L495 AbstractCegarLoop]: Abstraction has 15633 states and 62149 transitions. [2023-12-02 16:59:20,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:20,113 INFO L276 IsEmpty]: Start isEmpty. Operand 15633 states and 62149 transitions. [2023-12-02 16:59:20,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:59:20,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:59:20,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:59:20,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2023-12-02 16:59:20,139 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:59:20,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:59:20,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1609161832, now seen corresponding path program 155 times [2023-12-02 16:59:20,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:59:20,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106295138] [2023-12-02 16:59:20,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:59:20,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:59:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:59:21,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:59:21,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:59:21,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106295138] [2023-12-02 16:59:21,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106295138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:59:21,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:59:21,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:59:21,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108188908] [2023-12-02 16:59:21,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:59:21,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:59:21,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:59:21,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:59:21,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:59:21,379 INFO L87 Difference]: Start difference. First operand 15633 states and 62149 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:23,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:59:23,046 INFO L93 Difference]: Finished difference Result 33199 states and 124792 transitions. [2023-12-02 16:59:23,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:59:23,047 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:59:23,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:59:23,135 INFO L225 Difference]: With dead ends: 33199 [2023-12-02 16:59:23,135 INFO L226 Difference]: Without dead ends: 32931 [2023-12-02 16:59:23,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=202, Invalid=398, Unknown=0, NotChecked=0, Total=600 [2023-12-02 16:59:23,135 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 530 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:59:23,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 1020 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:59:23,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32931 states. [2023-12-02 16:59:23,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32931 to 15591. [2023-12-02 16:59:23,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15591 states, 15590 states have (on average 3.9775497113534315) internal successors, (62010), 15590 states have internal predecessors, (62010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:23,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15591 states to 15591 states and 62010 transitions. [2023-12-02 16:59:23,621 INFO L78 Accepts]: Start accepts. Automaton has 15591 states and 62010 transitions. Word has length 58 [2023-12-02 16:59:23,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:59:23,621 INFO L495 AbstractCegarLoop]: Abstraction has 15591 states and 62010 transitions. [2023-12-02 16:59:23,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:23,621 INFO L276 IsEmpty]: Start isEmpty. Operand 15591 states and 62010 transitions. [2023-12-02 16:59:23,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:59:23,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:59:23,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:59:23,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2023-12-02 16:59:23,647 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:59:23,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:59:23,647 INFO L85 PathProgramCache]: Analyzing trace with hash 106660568, now seen corresponding path program 156 times [2023-12-02 16:59:23,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:59:23,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646749620] [2023-12-02 16:59:23,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:59:23,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:59:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:59:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:59:24,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:59:24,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646749620] [2023-12-02 16:59:24,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646749620] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:59:24,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:59:24,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:59:24,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306443791] [2023-12-02 16:59:24,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:59:24,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:59:24,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:59:24,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:59:24,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:59:24,942 INFO L87 Difference]: Start difference. First operand 15591 states and 62010 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:26,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:59:26,887 INFO L93 Difference]: Finished difference Result 32764 states and 123480 transitions. [2023-12-02 16:59:26,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:59:26,887 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:59:26,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:59:26,972 INFO L225 Difference]: With dead ends: 32764 [2023-12-02 16:59:26,973 INFO L226 Difference]: Without dead ends: 32649 [2023-12-02 16:59:26,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:59:26,973 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 524 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:59:26,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 1082 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:59:27,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32649 states. [2023-12-02 16:59:27,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32649 to 15627. [2023-12-02 16:59:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15627 states, 15626 states have (on average 3.9760655318059643) internal successors, (62130), 15626 states have internal predecessors, (62130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:27,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15627 states to 15627 states and 62130 transitions. [2023-12-02 16:59:27,437 INFO L78 Accepts]: Start accepts. Automaton has 15627 states and 62130 transitions. Word has length 58 [2023-12-02 16:59:27,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:59:27,437 INFO L495 AbstractCegarLoop]: Abstraction has 15627 states and 62130 transitions. [2023-12-02 16:59:27,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:27,437 INFO L276 IsEmpty]: Start isEmpty. Operand 15627 states and 62130 transitions. [2023-12-02 16:59:27,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:59:27,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:59:27,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:59:27,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2023-12-02 16:59:27,464 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:59:27,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:59:27,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1531589946, now seen corresponding path program 157 times [2023-12-02 16:59:27,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:59:27,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673499252] [2023-12-02 16:59:27,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:59:27,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:59:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:59:28,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:59:28,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:59:28,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673499252] [2023-12-02 16:59:28,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673499252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:59:28,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:59:28,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:59:28,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178484708] [2023-12-02 16:59:28,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:59:28,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:59:28,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:59:28,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:59:28,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:59:28,658 INFO L87 Difference]: Start difference. First operand 15627 states and 62130 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:30,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:59:30,353 INFO L93 Difference]: Finished difference Result 32785 states and 123525 transitions. [2023-12-02 16:59:30,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:59:30,354 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:59:30,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:59:30,440 INFO L225 Difference]: With dead ends: 32785 [2023-12-02 16:59:30,440 INFO L226 Difference]: Without dead ends: 32637 [2023-12-02 16:59:30,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:59:30,440 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 509 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:59:30,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 1015 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:59:30,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32637 states. [2023-12-02 16:59:30,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32637 to 15615. [2023-12-02 16:59:30,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15615 states, 15614 states have (on average 3.976303317535545) internal successors, (62086), 15614 states have internal predecessors, (62086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:30,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15615 states to 15615 states and 62086 transitions. [2023-12-02 16:59:30,911 INFO L78 Accepts]: Start accepts. Automaton has 15615 states and 62086 transitions. Word has length 58 [2023-12-02 16:59:30,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:59:30,911 INFO L495 AbstractCegarLoop]: Abstraction has 15615 states and 62086 transitions. [2023-12-02 16:59:30,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:30,911 INFO L276 IsEmpty]: Start isEmpty. Operand 15615 states and 62086 transitions. [2023-12-02 16:59:30,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:59:30,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:59:30,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:59:30,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2023-12-02 16:59:30,938 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:59:30,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:59:30,938 INFO L85 PathProgramCache]: Analyzing trace with hash -244197752, now seen corresponding path program 158 times [2023-12-02 16:59:30,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:59:30,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602348641] [2023-12-02 16:59:30,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:59:30,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:59:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:59:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:59:32,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:59:32,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602348641] [2023-12-02 16:59:32,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602348641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:59:32,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:59:32,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:59:32,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486629933] [2023-12-02 16:59:32,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:59:32,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:59:32,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:59:32,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:59:32,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:59:32,201 INFO L87 Difference]: Start difference. First operand 15615 states and 62086 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:34,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:59:34,015 INFO L93 Difference]: Finished difference Result 32725 states and 123390 transitions. [2023-12-02 16:59:34,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:59:34,016 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:59:34,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:59:34,103 INFO L225 Difference]: With dead ends: 32725 [2023-12-02 16:59:34,103 INFO L226 Difference]: Without dead ends: 32463 [2023-12-02 16:59:34,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:59:34,104 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 536 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:59:34,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 952 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1409 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:59:34,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32463 states. [2023-12-02 16:59:34,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32463 to 15579. [2023-12-02 16:59:34,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15579 states, 15578 states have (on average 3.9777891898831688) internal successors, (61966), 15578 states have internal predecessors, (61966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:34,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15579 states to 15579 states and 61966 transitions. [2023-12-02 16:59:34,585 INFO L78 Accepts]: Start accepts. Automaton has 15579 states and 61966 transitions. Word has length 58 [2023-12-02 16:59:34,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:59:34,586 INFO L495 AbstractCegarLoop]: Abstraction has 15579 states and 61966 transitions. [2023-12-02 16:59:34,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:34,586 INFO L276 IsEmpty]: Start isEmpty. Operand 15579 states and 61966 transitions. [2023-12-02 16:59:34,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:59:34,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:59:34,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:59:34,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2023-12-02 16:59:34,615 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:59:34,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:59:34,615 INFO L85 PathProgramCache]: Analyzing trace with hash -154642168, now seen corresponding path program 159 times [2023-12-02 16:59:34,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:59:34,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223691905] [2023-12-02 16:59:34,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:59:34,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:59:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:59:35,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:59:35,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:59:35,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223691905] [2023-12-02 16:59:35,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223691905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:59:35,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:59:35,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:59:35,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651406799] [2023-12-02 16:59:35,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:59:35,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:59:35,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:59:35,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:59:35,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:59:35,969 INFO L87 Difference]: Start difference. First operand 15579 states and 61966 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:37,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:59:37,815 INFO L93 Difference]: Finished difference Result 32980 states and 124194 transitions. [2023-12-02 16:59:37,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:59:37,815 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:59:37,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:59:37,903 INFO L225 Difference]: With dead ends: 32980 [2023-12-02 16:59:37,903 INFO L226 Difference]: Without dead ends: 32721 [2023-12-02 16:59:37,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:59:37,904 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 512 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:59:37,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 910 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:59:37,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32721 states. [2023-12-02 16:59:38,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32721 to 15810. [2023-12-02 16:59:38,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15810 states, 15809 states have (on average 3.965842241761022) internal successors, (62696), 15809 states have internal predecessors, (62696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:38,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15810 states to 15810 states and 62696 transitions. [2023-12-02 16:59:38,386 INFO L78 Accepts]: Start accepts. Automaton has 15810 states and 62696 transitions. Word has length 58 [2023-12-02 16:59:38,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:59:38,386 INFO L495 AbstractCegarLoop]: Abstraction has 15810 states and 62696 transitions. [2023-12-02 16:59:38,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:38,386 INFO L276 IsEmpty]: Start isEmpty. Operand 15810 states and 62696 transitions. [2023-12-02 16:59:38,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:59:38,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:59:38,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:59:38,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2023-12-02 16:59:38,413 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:59:38,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:59:38,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1934609754, now seen corresponding path program 160 times [2023-12-02 16:59:38,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:59:38,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991596656] [2023-12-02 16:59:38,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:59:38,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:59:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:59:39,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:59:39,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:59:39,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991596656] [2023-12-02 16:59:39,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991596656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:59:39,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:59:39,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:59:39,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502933893] [2023-12-02 16:59:39,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:59:39,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:59:39,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:59:39,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:59:39,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:59:39,767 INFO L87 Difference]: Start difference. First operand 15810 states and 62696 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:41,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:59:41,581 INFO L93 Difference]: Finished difference Result 33013 states and 124181 transitions. [2023-12-02 16:59:41,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:59:41,581 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:59:41,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:59:41,667 INFO L225 Difference]: With dead ends: 33013 [2023-12-02 16:59:41,667 INFO L226 Difference]: Without dead ends: 32880 [2023-12-02 16:59:41,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:59:41,668 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 473 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:59:41,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 1056 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:59:41,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32880 states. [2023-12-02 16:59:42,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32880 to 15831. [2023-12-02 16:59:42,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15831 states, 15830 states have (on average 3.9639292482627924) internal successors, (62749), 15830 states have internal predecessors, (62749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:42,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15831 states to 15831 states and 62749 transitions. [2023-12-02 16:59:42,140 INFO L78 Accepts]: Start accepts. Automaton has 15831 states and 62749 transitions. Word has length 58 [2023-12-02 16:59:42,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:59:42,140 INFO L495 AbstractCegarLoop]: Abstraction has 15831 states and 62749 transitions. [2023-12-02 16:59:42,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:42,140 INFO L276 IsEmpty]: Start isEmpty. Operand 15831 states and 62749 transitions. [2023-12-02 16:59:42,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:59:42,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:59:42,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:59:42,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2023-12-02 16:59:42,167 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:59:42,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:59:42,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1317413128, now seen corresponding path program 161 times [2023-12-02 16:59:42,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:59:42,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535265321] [2023-12-02 16:59:42,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:59:42,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:59:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:59:43,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:59:43,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:59:43,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535265321] [2023-12-02 16:59:43,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535265321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:59:43,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:59:43,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:59:43,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581321119] [2023-12-02 16:59:43,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:59:43,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:59:43,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:59:43,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:59:43,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:59:43,444 INFO L87 Difference]: Start difference. First operand 15831 states and 62749 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:45,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:59:45,220 INFO L93 Difference]: Finished difference Result 32878 states and 123809 transitions. [2023-12-02 16:59:45,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:59:45,220 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:59:45,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:59:45,306 INFO L225 Difference]: With dead ends: 32878 [2023-12-02 16:59:45,306 INFO L226 Difference]: Without dead ends: 32658 [2023-12-02 16:59:45,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:59:45,307 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 458 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:59:45,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 945 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:59:45,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32658 states. [2023-12-02 16:59:45,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32658 to 15747. [2023-12-02 16:59:45,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15747 states, 15746 states have (on average 3.9676108217960118) internal successors, (62474), 15746 states have internal predecessors, (62474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:45,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15747 states to 15747 states and 62474 transitions. [2023-12-02 16:59:45,777 INFO L78 Accepts]: Start accepts. Automaton has 15747 states and 62474 transitions. Word has length 58 [2023-12-02 16:59:45,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:59:45,778 INFO L495 AbstractCegarLoop]: Abstraction has 15747 states and 62474 transitions. [2023-12-02 16:59:45,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:45,778 INFO L276 IsEmpty]: Start isEmpty. Operand 15747 states and 62474 transitions. [2023-12-02 16:59:45,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:59:45,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:59:45,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:59:45,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2023-12-02 16:59:45,805 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:59:45,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:59:45,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1139553686, now seen corresponding path program 162 times [2023-12-02 16:59:45,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:59:45,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657954454] [2023-12-02 16:59:45,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:59:45,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:59:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:59:47,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:59:47,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:59:47,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657954454] [2023-12-02 16:59:47,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657954454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:59:47,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:59:47,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:59:47,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949616345] [2023-12-02 16:59:47,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:59:47,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:59:47,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:59:47,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:59:47,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:59:47,106 INFO L87 Difference]: Start difference. First operand 15747 states and 62474 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:48,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:59:48,765 INFO L93 Difference]: Finished difference Result 32839 states and 123667 transitions. [2023-12-02 16:59:48,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:59:48,766 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:59:48,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:59:48,853 INFO L225 Difference]: With dead ends: 32839 [2023-12-02 16:59:48,853 INFO L226 Difference]: Without dead ends: 32706 [2023-12-02 16:59:48,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:59:48,853 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 506 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:59:48,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 903 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:59:48,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32706 states. [2023-12-02 16:59:49,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32706 to 15810. [2023-12-02 16:59:49,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15810 states, 15809 states have (on average 3.964513884496173) internal successors, (62675), 15809 states have internal predecessors, (62675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:49,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15810 states to 15810 states and 62675 transitions. [2023-12-02 16:59:49,324 INFO L78 Accepts]: Start accepts. Automaton has 15810 states and 62675 transitions. Word has length 58 [2023-12-02 16:59:49,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:59:49,324 INFO L495 AbstractCegarLoop]: Abstraction has 15810 states and 62675 transitions. [2023-12-02 16:59:49,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:49,324 INFO L276 IsEmpty]: Start isEmpty. Operand 15810 states and 62675 transitions. [2023-12-02 16:59:49,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:59:49,351 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:59:49,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:59:49,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2023-12-02 16:59:49,351 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:59:49,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:59:49,351 INFO L85 PathProgramCache]: Analyzing trace with hash 96609272, now seen corresponding path program 163 times [2023-12-02 16:59:49,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:59:49,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988611699] [2023-12-02 16:59:49,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:59:49,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:59:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:59:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:59:50,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:59:50,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988611699] [2023-12-02 16:59:50,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988611699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:59:50,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:59:50,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:59:50,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337174016] [2023-12-02 16:59:50,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:59:50,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:59:50,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:59:50,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:59:50,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:59:50,735 INFO L87 Difference]: Start difference. First operand 15810 states and 62675 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:52,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:59:52,421 INFO L93 Difference]: Finished difference Result 32842 states and 123652 transitions. [2023-12-02 16:59:52,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:59:52,422 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:59:52,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:59:52,515 INFO L225 Difference]: With dead ends: 32842 [2023-12-02 16:59:52,515 INFO L226 Difference]: Without dead ends: 32685 [2023-12-02 16:59:52,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:59:52,515 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 475 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:59:52,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 1002 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1487 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:59:52,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32685 states. [2023-12-02 16:59:52,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32685 to 15789. [2023-12-02 16:59:52,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15789 states, 15788 states have (on average 3.965100076007094) internal successors, (62601), 15788 states have internal predecessors, (62601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:53,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15789 states to 15789 states and 62601 transitions. [2023-12-02 16:59:53,007 INFO L78 Accepts]: Start accepts. Automaton has 15789 states and 62601 transitions. Word has length 58 [2023-12-02 16:59:53,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:59:53,008 INFO L495 AbstractCegarLoop]: Abstraction has 15789 states and 62601 transitions. [2023-12-02 16:59:53,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:53,008 INFO L276 IsEmpty]: Start isEmpty. Operand 15789 states and 62601 transitions. [2023-12-02 16:59:53,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:59:53,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:59:53,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:59:53,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2023-12-02 16:59:53,034 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:59:53,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:59:53,034 INFO L85 PathProgramCache]: Analyzing trace with hash -630585562, now seen corresponding path program 164 times [2023-12-02 16:59:53,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:59:53,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518098922] [2023-12-02 16:59:53,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:59:53,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:59:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:59:54,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:59:54,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:59:54,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518098922] [2023-12-02 16:59:54,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518098922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:59:54,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:59:54,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:59:54,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361991407] [2023-12-02 16:59:54,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:59:54,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:59:54,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:59:54,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:59:54,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:59:54,300 INFO L87 Difference]: Start difference. First operand 15789 states and 62601 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:55,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:59:55,971 INFO L93 Difference]: Finished difference Result 32683 states and 123221 transitions. [2023-12-02 16:59:55,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:59:55,971 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:59:55,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:59:56,057 INFO L225 Difference]: With dead ends: 32683 [2023-12-02 16:59:56,057 INFO L226 Difference]: Without dead ends: 32151 [2023-12-02 16:59:56,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:59:56,057 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 462 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:59:56,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 911 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:59:56,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32151 states. [2023-12-02 16:59:56,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32151 to 15483. [2023-12-02 16:59:56,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15483 states, 15482 states have (on average 3.9825603927141198) internal successors, (61658), 15482 states have internal predecessors, (61658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:56,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15483 states to 15483 states and 61658 transitions. [2023-12-02 16:59:56,515 INFO L78 Accepts]: Start accepts. Automaton has 15483 states and 61658 transitions. Word has length 58 [2023-12-02 16:59:56,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:59:56,515 INFO L495 AbstractCegarLoop]: Abstraction has 15483 states and 61658 transitions. [2023-12-02 16:59:56,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand 15483 states and 61658 transitions. [2023-12-02 16:59:56,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:59:56,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:59:56,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:59:56,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2023-12-02 16:59:56,542 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 16:59:56,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:59:56,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1096801578, now seen corresponding path program 165 times [2023-12-02 16:59:56,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:59:56,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731427174] [2023-12-02 16:59:56,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:59:56,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:59:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:59:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:59:57,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:59:57,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731427174] [2023-12-02 16:59:57,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731427174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:59:57,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:59:57,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 16:59:57,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881143526] [2023-12-02 16:59:57,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:59:57,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:59:57,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:59:57,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:59:57,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:59:57,865 INFO L87 Difference]: Start difference. First operand 15483 states and 61658 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:59:59,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:59:59,530 INFO L93 Difference]: Finished difference Result 31906 states and 120672 transitions. [2023-12-02 16:59:59,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:59:59,531 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 16:59:59,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:59:59,614 INFO L225 Difference]: With dead ends: 31906 [2023-12-02 16:59:59,614 INFO L226 Difference]: Without dead ends: 31647 [2023-12-02 16:59:59,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:59:59,614 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 472 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:59:59,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 924 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:59:59,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31647 states. [2023-12-02 17:00:00,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31647 to 15930. [2023-12-02 17:00:00,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15930 states, 15929 states have (on average 3.95881725155377) internal successors, (63060), 15929 states have internal predecessors, (63060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:00,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15930 states to 15930 states and 63060 transitions. [2023-12-02 17:00:00,088 INFO L78 Accepts]: Start accepts. Automaton has 15930 states and 63060 transitions. Word has length 58 [2023-12-02 17:00:00,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:00,088 INFO L495 AbstractCegarLoop]: Abstraction has 15930 states and 63060 transitions. [2023-12-02 17:00:00,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:00,088 INFO L276 IsEmpty]: Start isEmpty. Operand 15930 states and 63060 transitions. [2023-12-02 17:00:00,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:00:00,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:00,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:00:00,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2023-12-02 17:00:00,115 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:00:00,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:00,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2030775594, now seen corresponding path program 166 times [2023-12-02 17:00:00,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:00,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958324511] [2023-12-02 17:00:00,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:00,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:01,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:00:01,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:01,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958324511] [2023-12-02 17:00:01,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958324511] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:01,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:00:01,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:00:01,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962469371] [2023-12-02 17:00:01,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:01,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:00:01,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:01,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:00:01,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:00:01,198 INFO L87 Difference]: Start difference. First operand 15930 states and 63060 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:02,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:02,943 INFO L93 Difference]: Finished difference Result 31939 states and 120659 transitions. [2023-12-02 17:00:02,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:00:02,943 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:00:02,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:03,029 INFO L225 Difference]: With dead ends: 31939 [2023-12-02 17:00:03,029 INFO L226 Difference]: Without dead ends: 31806 [2023-12-02 17:00:03,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:00:03,029 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 472 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:03,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 1009 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:00:03,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31806 states. [2023-12-02 17:00:03,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31806 to 15951. [2023-12-02 17:00:03,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15951 states, 15950 states have (on average 3.9569278996865203) internal successors, (63113), 15950 states have internal predecessors, (63113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:03,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15951 states to 15951 states and 63113 transitions. [2023-12-02 17:00:03,514 INFO L78 Accepts]: Start accepts. Automaton has 15951 states and 63113 transitions. Word has length 58 [2023-12-02 17:00:03,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:03,515 INFO L495 AbstractCegarLoop]: Abstraction has 15951 states and 63113 transitions. [2023-12-02 17:00:03,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:03,515 INFO L276 IsEmpty]: Start isEmpty. Operand 15951 states and 63113 transitions. [2023-12-02 17:00:03,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:00:03,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:03,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:00:03,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2023-12-02 17:00:03,542 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:00:03,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:03,542 INFO L85 PathProgramCache]: Analyzing trace with hash -379205368, now seen corresponding path program 167 times [2023-12-02 17:00:03,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:03,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242614026] [2023-12-02 17:00:03,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:03,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:04,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:00:04,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:04,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242614026] [2023-12-02 17:00:04,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242614026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:04,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:00:04,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:00:04,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569795027] [2023-12-02 17:00:04,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:04,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:00:04,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:04,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:00:04,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:00:04,790 INFO L87 Difference]: Start difference. First operand 15951 states and 63113 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:06,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:06,515 INFO L93 Difference]: Finished difference Result 31804 states and 120287 transitions. [2023-12-02 17:00:06,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:00:06,515 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:00:06,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:06,600 INFO L225 Difference]: With dead ends: 31804 [2023-12-02 17:00:06,600 INFO L226 Difference]: Without dead ends: 31584 [2023-12-02 17:00:06,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:00:06,601 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 535 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:06,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 865 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 17:00:06,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31584 states. [2023-12-02 17:00:07,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31584 to 15867. [2023-12-02 17:00:07,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15867 states, 15866 states have (on average 3.9605445606958276) internal successors, (62838), 15866 states have internal predecessors, (62838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:07,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15867 states to 15867 states and 62838 transitions. [2023-12-02 17:00:07,115 INFO L78 Accepts]: Start accepts. Automaton has 15867 states and 62838 transitions. Word has length 58 [2023-12-02 17:00:07,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:07,115 INFO L495 AbstractCegarLoop]: Abstraction has 15867 states and 62838 transitions. [2023-12-02 17:00:07,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:07,115 INFO L276 IsEmpty]: Start isEmpty. Operand 15867 states and 62838 transitions. [2023-12-02 17:00:07,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:00:07,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:07,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:00:07,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2023-12-02 17:00:07,141 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:00:07,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:07,142 INFO L85 PathProgramCache]: Analyzing trace with hash -985190904, now seen corresponding path program 168 times [2023-12-02 17:00:07,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:07,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27727892] [2023-12-02 17:00:07,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:07,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:00:08,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:08,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27727892] [2023-12-02 17:00:08,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27727892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:08,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:00:08,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:00:08,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900771809] [2023-12-02 17:00:08,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:08,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:00:08,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:08,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:00:08,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:00:08,394 INFO L87 Difference]: Start difference. First operand 15867 states and 62838 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:10,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:10,183 INFO L93 Difference]: Finished difference Result 31933 states and 120653 transitions. [2023-12-02 17:00:10,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 17:00:10,183 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:00:10,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:10,267 INFO L225 Difference]: With dead ends: 31933 [2023-12-02 17:00:10,267 INFO L226 Difference]: Without dead ends: 31800 [2023-12-02 17:00:10,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=203, Invalid=397, Unknown=0, NotChecked=0, Total=600 [2023-12-02 17:00:10,268 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 508 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:10,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 1042 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:00:10,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31800 states. [2023-12-02 17:00:10,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31800 to 15930. [2023-12-02 17:00:10,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15930 states, 15929 states have (on average 3.957498901374851) internal successors, (63039), 15929 states have internal predecessors, (63039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:10,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15930 states to 15930 states and 63039 transitions. [2023-12-02 17:00:10,737 INFO L78 Accepts]: Start accepts. Automaton has 15930 states and 63039 transitions. Word has length 58 [2023-12-02 17:00:10,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:10,737 INFO L495 AbstractCegarLoop]: Abstraction has 15930 states and 63039 transitions. [2023-12-02 17:00:10,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:10,737 INFO L276 IsEmpty]: Start isEmpty. Operand 15930 states and 63039 transitions. [2023-12-02 17:00:10,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:00:10,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:10,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:00:10,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2023-12-02 17:00:10,769 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:00:10,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:10,769 INFO L85 PathProgramCache]: Analyzing trace with hash 899795430, now seen corresponding path program 169 times [2023-12-02 17:00:10,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:10,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621390355] [2023-12-02 17:00:10,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:10,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:00:12,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:12,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621390355] [2023-12-02 17:00:12,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621390355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:12,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:00:12,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:00:12,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639802275] [2023-12-02 17:00:12,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:12,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:00:12,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:12,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:00:12,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:00:12,047 INFO L87 Difference]: Start difference. First operand 15930 states and 63039 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:13,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:13,755 INFO L93 Difference]: Finished difference Result 31936 states and 120638 transitions. [2023-12-02 17:00:13,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 17:00:13,756 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:00:13,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:13,840 INFO L225 Difference]: With dead ends: 31936 [2023-12-02 17:00:13,840 INFO L226 Difference]: Without dead ends: 31779 [2023-12-02 17:00:13,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2023-12-02 17:00:13,841 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 502 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:13,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 971 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 17:00:13,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31779 states. [2023-12-02 17:00:14,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31779 to 15909. [2023-12-02 17:00:14,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15909 states, 15908 states have (on average 3.9580714106110135) internal successors, (62965), 15908 states have internal predecessors, (62965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:14,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15909 states to 15909 states and 62965 transitions. [2023-12-02 17:00:14,309 INFO L78 Accepts]: Start accepts. Automaton has 15909 states and 62965 transitions. Word has length 58 [2023-12-02 17:00:14,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:14,309 INFO L495 AbstractCegarLoop]: Abstraction has 15909 states and 62965 transitions. [2023-12-02 17:00:14,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:14,309 INFO L276 IsEmpty]: Start isEmpty. Operand 15909 states and 62965 transitions. [2023-12-02 17:00:14,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:00:14,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:14,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:00:14,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2023-12-02 17:00:14,336 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:00:14,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:14,337 INFO L85 PathProgramCache]: Analyzing trace with hash -782041480, now seen corresponding path program 170 times [2023-12-02 17:00:14,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:14,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811917727] [2023-12-02 17:00:14,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:14,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:15,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:00:15,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:15,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811917727] [2023-12-02 17:00:15,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811917727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:15,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:00:15,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:00:15,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363386656] [2023-12-02 17:00:15,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:15,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:00:15,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:15,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:00:15,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:00:15,601 INFO L87 Difference]: Start difference. First operand 15909 states and 62965 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:17,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:17,412 INFO L93 Difference]: Finished difference Result 31777 states and 120207 transitions. [2023-12-02 17:00:17,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 17:00:17,412 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:00:17,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:17,498 INFO L225 Difference]: With dead ends: 31777 [2023-12-02 17:00:17,498 INFO L226 Difference]: Without dead ends: 31191 [2023-12-02 17:00:17,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=186, Invalid=366, Unknown=0, NotChecked=0, Total=552 [2023-12-02 17:00:17,499 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 455 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:17,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 946 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 17:00:17,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31191 states. [2023-12-02 17:00:17,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31191 to 15549. [2023-12-02 17:00:17,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15549 states, 15548 states have (on average 3.9762670439927965) internal successors, (61823), 15548 states have internal predecessors, (61823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:17,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15549 states to 15549 states and 61823 transitions. [2023-12-02 17:00:17,949 INFO L78 Accepts]: Start accepts. Automaton has 15549 states and 61823 transitions. Word has length 58 [2023-12-02 17:00:17,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:17,950 INFO L495 AbstractCegarLoop]: Abstraction has 15549 states and 61823 transitions. [2023-12-02 17:00:17,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:17,950 INFO L276 IsEmpty]: Start isEmpty. Operand 15549 states and 61823 transitions. [2023-12-02 17:00:17,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:00:17,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:17,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:00:17,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2023-12-02 17:00:17,975 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:00:17,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:17,976 INFO L85 PathProgramCache]: Analyzing trace with hash -447298718, now seen corresponding path program 171 times [2023-12-02 17:00:17,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:17,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465733892] [2023-12-02 17:00:17,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:17,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:19,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:00:19,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:19,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465733892] [2023-12-02 17:00:19,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465733892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:19,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:00:19,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:00:19,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434677445] [2023-12-02 17:00:19,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:19,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:00:19,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:19,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:00:19,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:00:19,273 INFO L87 Difference]: Start difference. First operand 15549 states and 61823 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:21,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:21,045 INFO L93 Difference]: Finished difference Result 31933 states and 120784 transitions. [2023-12-02 17:00:21,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:00:21,046 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:00:21,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:21,131 INFO L225 Difference]: With dead ends: 31933 [2023-12-02 17:00:21,132 INFO L226 Difference]: Without dead ends: 31674 [2023-12-02 17:00:21,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:00:21,132 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 457 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:21,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 1065 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:00:21,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31674 states. [2023-12-02 17:00:21,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31674 to 15711. [2023-12-02 17:00:21,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15711 states, 15710 states have (on average 3.970719287078294) internal successors, (62380), 15710 states have internal predecessors, (62380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:21,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15711 states to 15711 states and 62380 transitions. [2023-12-02 17:00:21,612 INFO L78 Accepts]: Start accepts. Automaton has 15711 states and 62380 transitions. Word has length 58 [2023-12-02 17:00:21,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:21,613 INFO L495 AbstractCegarLoop]: Abstraction has 15711 states and 62380 transitions. [2023-12-02 17:00:21,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:21,613 INFO L276 IsEmpty]: Start isEmpty. Operand 15711 states and 62380 transitions. [2023-12-02 17:00:21,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:00:21,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:21,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:00:21,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2023-12-02 17:00:21,642 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:00:21,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:21,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1164008704, now seen corresponding path program 172 times [2023-12-02 17:00:21,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:21,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227142766] [2023-12-02 17:00:21,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:21,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:23,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:00:23,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:23,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227142766] [2023-12-02 17:00:23,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227142766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:23,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:00:23,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:00:23,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843041094] [2023-12-02 17:00:23,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:23,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:00:23,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:23,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:00:23,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:00:23,036 INFO L87 Difference]: Start difference. First operand 15711 states and 62380 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:24,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:24,958 INFO L93 Difference]: Finished difference Result 31966 states and 120771 transitions. [2023-12-02 17:00:24,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:00:24,958 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:00:24,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:25,043 INFO L225 Difference]: With dead ends: 31966 [2023-12-02 17:00:25,043 INFO L226 Difference]: Without dead ends: 31833 [2023-12-02 17:00:25,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:00:25,043 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 436 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:25,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 1092 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1620 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 17:00:25,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31833 states. [2023-12-02 17:00:25,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31833 to 15732. [2023-12-02 17:00:25,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15732 states, 15731 states have (on average 3.9687877439450765) internal successors, (62433), 15731 states have internal predecessors, (62433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:25,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15732 states to 15732 states and 62433 transitions. [2023-12-02 17:00:25,506 INFO L78 Accepts]: Start accepts. Automaton has 15732 states and 62433 transitions. Word has length 58 [2023-12-02 17:00:25,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:25,506 INFO L495 AbstractCegarLoop]: Abstraction has 15732 states and 62433 transitions. [2023-12-02 17:00:25,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:25,506 INFO L276 IsEmpty]: Start isEmpty. Operand 15732 states and 62433 transitions. [2023-12-02 17:00:25,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:00:25,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:25,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:00:25,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2023-12-02 17:00:25,533 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:00:25,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:25,533 INFO L85 PathProgramCache]: Analyzing trace with hash 2061439586, now seen corresponding path program 173 times [2023-12-02 17:00:25,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:25,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397028397] [2023-12-02 17:00:25,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:25,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:26,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:00:26,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:26,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397028397] [2023-12-02 17:00:26,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397028397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:26,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:00:26,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:00:26,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197152142] [2023-12-02 17:00:26,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:26,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:00:26,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:26,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:00:26,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:00:26,672 INFO L87 Difference]: Start difference. First operand 15732 states and 62433 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:28,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:28,547 INFO L93 Difference]: Finished difference Result 31831 states and 120399 transitions. [2023-12-02 17:00:28,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:00:28,548 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:00:28,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:28,632 INFO L225 Difference]: With dead ends: 31831 [2023-12-02 17:00:28,632 INFO L226 Difference]: Without dead ends: 31611 [2023-12-02 17:00:28,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:00:28,632 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 419 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:28,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1009 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 17:00:28,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31611 states. [2023-12-02 17:00:29,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31611 to 15648. [2023-12-02 17:00:29,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15648 states, 15647 states have (on average 3.9748194542084745) internal successors, (62194), 15647 states have internal predecessors, (62194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:29,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15648 states to 15648 states and 62194 transitions. [2023-12-02 17:00:29,098 INFO L78 Accepts]: Start accepts. Automaton has 15648 states and 62194 transitions. Word has length 58 [2023-12-02 17:00:29,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:29,098 INFO L495 AbstractCegarLoop]: Abstraction has 15648 states and 62194 transitions. [2023-12-02 17:00:29,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:29,099 INFO L276 IsEmpty]: Start isEmpty. Operand 15648 states and 62194 transitions. [2023-12-02 17:00:29,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:00:29,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:29,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:00:29,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2023-12-02 17:00:29,125 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:00:29,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:29,126 INFO L85 PathProgramCache]: Analyzing trace with hash -690567806, now seen corresponding path program 174 times [2023-12-02 17:00:29,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:29,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92074179] [2023-12-02 17:00:29,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:29,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:30,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:00:30,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:30,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92074179] [2023-12-02 17:00:30,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92074179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:30,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:00:30,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:00:30,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546006498] [2023-12-02 17:00:30,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:30,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:00:30,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:30,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:00:30,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:00:30,347 INFO L87 Difference]: Start difference. First operand 15648 states and 62194 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:32,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:32,037 INFO L93 Difference]: Finished difference Result 31543 states and 119596 transitions. [2023-12-02 17:00:32,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:00:32,037 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:00:32,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:32,122 INFO L225 Difference]: With dead ends: 31543 [2023-12-02 17:00:32,122 INFO L226 Difference]: Without dead ends: 31284 [2023-12-02 17:00:32,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:00:32,122 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 418 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:32,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 983 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:00:32,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31284 states. [2023-12-02 17:00:32,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31284 to 15702. [2023-12-02 17:00:32,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15702 states, 15701 states have (on average 3.9701292911279538) internal successors, (62335), 15701 states have internal predecessors, (62335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:32,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15702 states to 15702 states and 62335 transitions. [2023-12-02 17:00:32,578 INFO L78 Accepts]: Start accepts. Automaton has 15702 states and 62335 transitions. Word has length 58 [2023-12-02 17:00:32,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:32,578 INFO L495 AbstractCegarLoop]: Abstraction has 15702 states and 62335 transitions. [2023-12-02 17:00:32,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:32,579 INFO L276 IsEmpty]: Start isEmpty. Operand 15702 states and 62335 transitions. [2023-12-02 17:00:32,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:00:32,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:32,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:00:32,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2023-12-02 17:00:32,605 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:00:32,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:32,605 INFO L85 PathProgramCache]: Analyzing trace with hash 2064622336, now seen corresponding path program 175 times [2023-12-02 17:00:32,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:32,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669497657] [2023-12-02 17:00:32,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:32,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:33,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:00:33,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:33,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669497657] [2023-12-02 17:00:33,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669497657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:33,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:00:33,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:00:33,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164933546] [2023-12-02 17:00:33,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:33,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:00:33,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:33,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:00:33,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:00:33,911 INFO L87 Difference]: Start difference. First operand 15702 states and 62335 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:35,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:35,419 INFO L93 Difference]: Finished difference Result 31564 states and 119562 transitions. [2023-12-02 17:00:35,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:00:35,419 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:00:35,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:35,504 INFO L225 Difference]: With dead ends: 31564 [2023-12-02 17:00:35,504 INFO L226 Difference]: Without dead ends: 31431 [2023-12-02 17:00:35,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:00:35,504 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 475 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:35,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 839 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 17:00:35,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31431 states. [2023-12-02 17:00:35,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31431 to 15720. [2023-12-02 17:00:35,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15720 states, 15719 states have (on average 3.968573064444303) internal successors, (62382), 15719 states have internal predecessors, (62382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:35,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15720 states to 15720 states and 62382 transitions. [2023-12-02 17:00:35,964 INFO L78 Accepts]: Start accepts. Automaton has 15720 states and 62382 transitions. Word has length 58 [2023-12-02 17:00:35,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:35,964 INFO L495 AbstractCegarLoop]: Abstraction has 15720 states and 62382 transitions. [2023-12-02 17:00:35,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:35,965 INFO L276 IsEmpty]: Start isEmpty. Operand 15720 states and 62382 transitions. [2023-12-02 17:00:36,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:00:36,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:36,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:00:36,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2023-12-02 17:00:36,004 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:00:36,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:36,004 INFO L85 PathProgramCache]: Analyzing trace with hash -717926814, now seen corresponding path program 176 times [2023-12-02 17:00:36,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:36,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223267599] [2023-12-02 17:00:36,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:36,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:37,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:00:37,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:37,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223267599] [2023-12-02 17:00:37,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223267599] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:37,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:00:37,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:00:37,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89289807] [2023-12-02 17:00:37,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:37,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:00:37,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:37,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:00:37,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:00:37,153 INFO L87 Difference]: Start difference. First operand 15720 states and 62382 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:38,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:38,805 INFO L93 Difference]: Finished difference Result 31429 states and 119193 transitions. [2023-12-02 17:00:38,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:00:38,806 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:00:38,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:38,891 INFO L225 Difference]: With dead ends: 31429 [2023-12-02 17:00:38,891 INFO L226 Difference]: Without dead ends: 31230 [2023-12-02 17:00:38,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:00:38,891 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 440 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:38,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 1011 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 17:00:39,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31230 states. [2023-12-02 17:00:39,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31230 to 15648. [2023-12-02 17:00:39,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15648 states, 15647 states have (on average 3.9730938838115932) internal successors, (62167), 15647 states have internal predecessors, (62167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:39,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15648 states to 15648 states and 62167 transitions. [2023-12-02 17:00:39,439 INFO L78 Accepts]: Start accepts. Automaton has 15648 states and 62167 transitions. Word has length 58 [2023-12-02 17:00:39,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:39,439 INFO L495 AbstractCegarLoop]: Abstraction has 15648 states and 62167 transitions. [2023-12-02 17:00:39,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:39,439 INFO L276 IsEmpty]: Start isEmpty. Operand 15648 states and 62167 transitions. [2023-12-02 17:00:39,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:00:39,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:39,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:00:39,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2023-12-02 17:00:39,467 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:00:39,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:39,471 INFO L85 PathProgramCache]: Analyzing trace with hash 823481314, now seen corresponding path program 177 times [2023-12-02 17:00:39,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:39,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345282979] [2023-12-02 17:00:39,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:39,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:00:40,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:40,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345282979] [2023-12-02 17:00:40,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345282979] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:40,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:00:40,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:00:40,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717117617] [2023-12-02 17:00:40,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:40,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:00:40,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:40,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:00:40,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:00:40,869 INFO L87 Difference]: Start difference. First operand 15648 states and 62167 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:42,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:42,573 INFO L93 Difference]: Finished difference Result 31804 states and 120261 transitions. [2023-12-02 17:00:42,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:00:42,574 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:00:42,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:42,662 INFO L225 Difference]: With dead ends: 31804 [2023-12-02 17:00:42,662 INFO L226 Difference]: Without dead ends: 31671 [2023-12-02 17:00:42,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:00:42,662 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 502 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:42,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 938 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:00:42,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31671 states. [2023-12-02 17:00:43,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31671 to 15678. [2023-12-02 17:00:43,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15678 states, 15677 states have (on average 3.9712317407667284) internal successors, (62257), 15677 states have internal predecessors, (62257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:43,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15678 states to 15678 states and 62257 transitions. [2023-12-02 17:00:43,138 INFO L78 Accepts]: Start accepts. Automaton has 15678 states and 62257 transitions. Word has length 58 [2023-12-02 17:00:43,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:43,138 INFO L495 AbstractCegarLoop]: Abstraction has 15678 states and 62257 transitions. [2023-12-02 17:00:43,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:43,138 INFO L276 IsEmpty]: Start isEmpty. Operand 15678 states and 62257 transitions. [2023-12-02 17:00:43,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:00:43,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:43,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:00:43,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2023-12-02 17:00:43,166 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:00:43,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:43,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1106133602, now seen corresponding path program 178 times [2023-12-02 17:00:43,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:43,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114907372] [2023-12-02 17:00:43,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:43,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:44,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:00:44,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:44,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114907372] [2023-12-02 17:00:44,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114907372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:44,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:00:44,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:00:44,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051183456] [2023-12-02 17:00:44,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:44,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:00:44,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:44,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:00:44,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:00:44,687 INFO L87 Difference]: Start difference. First operand 15678 states and 62257 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:46,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:46,567 INFO L93 Difference]: Finished difference Result 31807 states and 120246 transitions. [2023-12-02 17:00:46,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:00:46,567 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:00:46,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:46,652 INFO L225 Difference]: With dead ends: 31807 [2023-12-02 17:00:46,652 INFO L226 Difference]: Without dead ends: 31650 [2023-12-02 17:00:46,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:00:46,653 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 500 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:46,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 967 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 17:00:46,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31650 states. [2023-12-02 17:00:47,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31650 to 15657. [2023-12-02 17:00:47,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15657 states, 15656 states have (on average 3.972598364844149) internal successors, (62195), 15656 states have internal predecessors, (62195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:47,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15657 states to 15657 states and 62195 transitions. [2023-12-02 17:00:47,118 INFO L78 Accepts]: Start accepts. Automaton has 15657 states and 62195 transitions. Word has length 58 [2023-12-02 17:00:47,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:47,119 INFO L495 AbstractCegarLoop]: Abstraction has 15657 states and 62195 transitions. [2023-12-02 17:00:47,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:47,119 INFO L276 IsEmpty]: Start isEmpty. Operand 15657 states and 62195 transitions. [2023-12-02 17:00:47,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:00:47,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:47,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:00:47,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2023-12-02 17:00:47,145 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:00:47,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:47,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1326490110, now seen corresponding path program 179 times [2023-12-02 17:00:47,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:47,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290010813] [2023-12-02 17:00:47,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:47,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:48,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:00:48,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:48,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290010813] [2023-12-02 17:00:48,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290010813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:48,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:00:48,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:00:48,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786399209] [2023-12-02 17:00:48,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:48,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:00:48,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:48,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:00:48,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:00:48,369 INFO L87 Difference]: Start difference. First operand 15657 states and 62195 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:50,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:50,044 INFO L93 Difference]: Finished difference Result 31738 states and 120045 transitions. [2023-12-02 17:00:50,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:00:50,044 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:00:50,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:50,131 INFO L225 Difference]: With dead ends: 31738 [2023-12-02 17:00:50,131 INFO L226 Difference]: Without dead ends: 31605 [2023-12-02 17:00:50,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:00:50,131 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 566 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:50,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 991 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:00:50,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31605 states. [2023-12-02 17:00:50,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31605 to 15675. [2023-12-02 17:00:50,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15675 states, 15674 states have (on average 3.971034834758198) internal successors, (62242), 15674 states have internal predecessors, (62242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:50,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15675 states to 15675 states and 62242 transitions. [2023-12-02 17:00:50,603 INFO L78 Accepts]: Start accepts. Automaton has 15675 states and 62242 transitions. Word has length 58 [2023-12-02 17:00:50,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:50,603 INFO L495 AbstractCegarLoop]: Abstraction has 15675 states and 62242 transitions. [2023-12-02 17:00:50,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:50,603 INFO L276 IsEmpty]: Start isEmpty. Operand 15675 states and 62242 transitions. [2023-12-02 17:00:50,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:00:50,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:50,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:00:50,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2023-12-02 17:00:50,630 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:00:50,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:50,630 INFO L85 PathProgramCache]: Analyzing trace with hash 874249826, now seen corresponding path program 180 times [2023-12-02 17:00:50,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:50,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122930856] [2023-12-02 17:00:50,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:50,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:51,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:00:51,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:51,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122930856] [2023-12-02 17:00:51,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122930856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:51,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:00:51,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:00:51,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109631083] [2023-12-02 17:00:51,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:51,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:00:51,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:51,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:00:51,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:00:51,727 INFO L87 Difference]: Start difference. First operand 15675 states and 62242 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:53,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:53,201 INFO L93 Difference]: Finished difference Result 31732 states and 120012 transitions. [2023-12-02 17:00:53,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:00:53,201 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:00:53,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:53,328 INFO L225 Difference]: With dead ends: 31732 [2023-12-02 17:00:53,328 INFO L226 Difference]: Without dead ends: 31587 [2023-12-02 17:00:53,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:00:53,329 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 512 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:53,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 941 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 17:00:53,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31587 states. [2023-12-02 17:00:53,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31587 to 15657. [2023-12-02 17:00:53,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15657 states, 15656 states have (on average 3.972023505365355) internal successors, (62186), 15656 states have internal predecessors, (62186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:53,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15657 states to 15657 states and 62186 transitions. [2023-12-02 17:00:53,840 INFO L78 Accepts]: Start accepts. Automaton has 15657 states and 62186 transitions. Word has length 58 [2023-12-02 17:00:53,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:53,840 INFO L495 AbstractCegarLoop]: Abstraction has 15657 states and 62186 transitions. [2023-12-02 17:00:53,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:53,840 INFO L276 IsEmpty]: Start isEmpty. Operand 15657 states and 62186 transitions. [2023-12-02 17:00:53,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:00:53,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:53,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:00:53,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2023-12-02 17:00:53,868 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:00:53,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:53,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1550481442, now seen corresponding path program 181 times [2023-12-02 17:00:53,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:53,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679891119] [2023-12-02 17:00:53,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:53,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:55,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:00:55,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:55,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679891119] [2023-12-02 17:00:55,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679891119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:55,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:00:55,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:00:55,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652819669] [2023-12-02 17:00:55,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:55,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:00:55,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:55,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:00:55,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:00:55,135 INFO L87 Difference]: Start difference. First operand 15657 states and 62186 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:56,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:00:56,738 INFO L93 Difference]: Finished difference Result 31588 states and 119626 transitions. [2023-12-02 17:00:56,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:00:56,738 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:00:56,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:00:56,844 INFO L225 Difference]: With dead ends: 31588 [2023-12-02 17:00:56,844 INFO L226 Difference]: Without dead ends: 31452 [2023-12-02 17:00:56,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:00:56,845 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 518 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:00:56,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 931 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 17:00:56,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31452 states. [2023-12-02 17:00:57,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31452 to 15675. [2023-12-02 17:00:57,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15675 states, 15674 states have (on average 3.9704606354472376) internal successors, (62233), 15674 states have internal predecessors, (62233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:57,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15675 states to 15675 states and 62233 transitions. [2023-12-02 17:00:57,315 INFO L78 Accepts]: Start accepts. Automaton has 15675 states and 62233 transitions. Word has length 58 [2023-12-02 17:00:57,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:00:57,315 INFO L495 AbstractCegarLoop]: Abstraction has 15675 states and 62233 transitions. [2023-12-02 17:00:57,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:00:57,315 INFO L276 IsEmpty]: Start isEmpty. Operand 15675 states and 62233 transitions. [2023-12-02 17:00:57,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:00:57,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:00:57,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:00:57,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2023-12-02 17:00:57,342 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:00:57,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:00:57,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1844008446, now seen corresponding path program 182 times [2023-12-02 17:00:57,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:00:57,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763586591] [2023-12-02 17:00:57,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:00:57,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:00:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:00:58,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:00:58,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:00:58,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763586591] [2023-12-02 17:00:58,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763586591] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:00:58,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:00:58,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:00:58,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757506791] [2023-12-02 17:00:58,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:00:58,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:00:58,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:00:58,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:00:58,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:00:58,686 INFO L87 Difference]: Start difference. First operand 15675 states and 62233 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:00,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:01:00,534 INFO L93 Difference]: Finished difference Result 31543 states and 119475 transitions. [2023-12-02 17:01:00,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:01:00,535 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:01:00,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:01:00,621 INFO L225 Difference]: With dead ends: 31543 [2023-12-02 17:01:00,621 INFO L226 Difference]: Without dead ends: 31362 [2023-12-02 17:01:00,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:01:00,621 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 466 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:01:00,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 996 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1440 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 17:01:00,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31362 states. [2023-12-02 17:01:01,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31362 to 15621. [2023-12-02 17:01:01,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15621 states, 15620 states have (on average 3.974583866837388) internal successors, (62083), 15620 states have internal predecessors, (62083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:01,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15621 states to 15621 states and 62083 transitions. [2023-12-02 17:01:01,082 INFO L78 Accepts]: Start accepts. Automaton has 15621 states and 62083 transitions. Word has length 58 [2023-12-02 17:01:01,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:01:01,083 INFO L495 AbstractCegarLoop]: Abstraction has 15621 states and 62083 transitions. [2023-12-02 17:01:01,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:01,083 INFO L276 IsEmpty]: Start isEmpty. Operand 15621 states and 62083 transitions. [2023-12-02 17:01:01,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:01:01,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:01:01,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:01:01,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2023-12-02 17:01:01,109 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:01:01,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:01:01,109 INFO L85 PathProgramCache]: Analyzing trace with hash 448693664, now seen corresponding path program 183 times [2023-12-02 17:01:01,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:01:01,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441622406] [2023-12-02 17:01:01,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:01:01,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:01:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:01:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:01:02,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:01:02,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441622406] [2023-12-02 17:01:02,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441622406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:01:02,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:01:02,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:01:02,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915137863] [2023-12-02 17:01:02,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:01:02,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:01:02,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:01:02,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:01:02,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:01:02,507 INFO L87 Difference]: Start difference. First operand 15621 states and 62083 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:04,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:01:04,235 INFO L93 Difference]: Finished difference Result 31438 states and 119205 transitions. [2023-12-02 17:01:04,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:01:04,235 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:01:04,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:01:04,319 INFO L225 Difference]: With dead ends: 31438 [2023-12-02 17:01:04,319 INFO L226 Difference]: Without dead ends: 31179 [2023-12-02 17:01:04,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:01:04,319 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 472 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:01:04,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 906 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:01:04,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31179 states. [2023-12-02 17:01:04,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31179 to 15852. [2023-12-02 17:01:04,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15852 states, 15851 states have (on average 3.9627152861018233) internal successors, (62813), 15851 states have internal predecessors, (62813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:04,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15852 states to 15852 states and 62813 transitions. [2023-12-02 17:01:04,773 INFO L78 Accepts]: Start accepts. Automaton has 15852 states and 62813 transitions. Word has length 58 [2023-12-02 17:01:04,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:01:04,774 INFO L495 AbstractCegarLoop]: Abstraction has 15852 states and 62813 transitions. [2023-12-02 17:01:04,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:04,774 INFO L276 IsEmpty]: Start isEmpty. Operand 15852 states and 62813 transitions. [2023-12-02 17:01:04,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:01:04,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:01:04,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:01:04,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2023-12-02 17:01:04,801 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:01:04,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:01:04,801 INFO L85 PathProgramCache]: Analyzing trace with hash -268016322, now seen corresponding path program 184 times [2023-12-02 17:01:04,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:01:04,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228259474] [2023-12-02 17:01:04,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:01:04,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:01:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:01:06,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:01:06,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:01:06,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228259474] [2023-12-02 17:01:06,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228259474] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:01:06,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:01:06,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:01:06,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115318157] [2023-12-02 17:01:06,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:01:06,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:01:06,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:01:06,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:01:06,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:01:06,049 INFO L87 Difference]: Start difference. First operand 15852 states and 62813 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:07,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:01:07,818 INFO L93 Difference]: Finished difference Result 31471 states and 119192 transitions. [2023-12-02 17:01:07,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:01:07,818 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:01:07,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:01:07,903 INFO L225 Difference]: With dead ends: 31471 [2023-12-02 17:01:07,903 INFO L226 Difference]: Without dead ends: 31338 [2023-12-02 17:01:07,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:01:07,903 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 442 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:01:07,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 954 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1439 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:01:07,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31338 states. [2023-12-02 17:01:08,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31338 to 15873. [2023-12-02 17:01:08,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15873 states, 15872 states have (on average 3.960811491935484) internal successors, (62866), 15872 states have internal predecessors, (62866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:08,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15873 states to 15873 states and 62866 transitions. [2023-12-02 17:01:08,373 INFO L78 Accepts]: Start accepts. Automaton has 15873 states and 62866 transitions. Word has length 58 [2023-12-02 17:01:08,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:01:08,373 INFO L495 AbstractCegarLoop]: Abstraction has 15873 states and 62866 transitions. [2023-12-02 17:01:08,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:08,373 INFO L276 IsEmpty]: Start isEmpty. Operand 15873 states and 62866 transitions. [2023-12-02 17:01:08,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:01:08,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:01:08,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:01:08,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2023-12-02 17:01:08,401 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:01:08,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:01:08,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1337535328, now seen corresponding path program 185 times [2023-12-02 17:01:08,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:01:08,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876810558] [2023-12-02 17:01:08,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:01:08,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:01:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:01:09,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:01:09,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:01:09,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876810558] [2023-12-02 17:01:09,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876810558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:01:09,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:01:09,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:01:09,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058353358] [2023-12-02 17:01:09,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:01:09,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:01:09,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:01:09,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:01:09,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:01:09,611 INFO L87 Difference]: Start difference. First operand 15873 states and 62866 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:11,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:01:11,320 INFO L93 Difference]: Finished difference Result 31336 states and 118820 transitions. [2023-12-02 17:01:11,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:01:11,321 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:01:11,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:01:11,406 INFO L225 Difference]: With dead ends: 31336 [2023-12-02 17:01:11,406 INFO L226 Difference]: Without dead ends: 31116 [2023-12-02 17:01:11,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:01:11,406 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 464 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:01:11,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 916 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:01:11,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31116 states. [2023-12-02 17:01:11,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31116 to 15789. [2023-12-02 17:01:11,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15789 states, 15788 states have (on average 3.964466683557132) internal successors, (62591), 15788 states have internal predecessors, (62591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:11,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15789 states to 15789 states and 62591 transitions. [2023-12-02 17:01:11,866 INFO L78 Accepts]: Start accepts. Automaton has 15789 states and 62591 transitions. Word has length 58 [2023-12-02 17:01:11,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:01:11,866 INFO L495 AbstractCegarLoop]: Abstraction has 15789 states and 62591 transitions. [2023-12-02 17:01:11,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:11,866 INFO L276 IsEmpty]: Start isEmpty. Operand 15789 states and 62591 transitions. [2023-12-02 17:01:11,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:01:11,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:01:11,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:01:11,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2023-12-02 17:01:11,893 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:01:11,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:01:11,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1465863620, now seen corresponding path program 186 times [2023-12-02 17:01:11,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:01:11,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746149062] [2023-12-02 17:01:11,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:01:11,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:01:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:01:13,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:01:13,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:01:13,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746149062] [2023-12-02 17:01:13,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746149062] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:01:13,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:01:13,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:01:13,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347082169] [2023-12-02 17:01:13,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:01:13,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:01:13,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:01:13,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:01:13,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:01:13,226 INFO L87 Difference]: Start difference. First operand 15789 states and 62591 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:14,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:01:14,850 INFO L93 Difference]: Finished difference Result 31339 states and 118826 transitions. [2023-12-02 17:01:14,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:01:14,850 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:01:14,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:01:14,937 INFO L225 Difference]: With dead ends: 31339 [2023-12-02 17:01:14,937 INFO L226 Difference]: Without dead ends: 31206 [2023-12-02 17:01:14,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:01:14,938 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 494 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:01:14,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 877 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 17:01:14,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31206 states. [2023-12-02 17:01:15,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31206 to 15852. [2023-12-02 17:01:15,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15852 states, 15851 states have (on average 3.961390448552142) internal successors, (62792), 15851 states have internal predecessors, (62792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:15,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15852 states to 15852 states and 62792 transitions. [2023-12-02 17:01:15,392 INFO L78 Accepts]: Start accepts. Automaton has 15852 states and 62792 transitions. Word has length 58 [2023-12-02 17:01:15,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:01:15,392 INFO L495 AbstractCegarLoop]: Abstraction has 15852 states and 62792 transitions. [2023-12-02 17:01:15,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:15,392 INFO L276 IsEmpty]: Start isEmpty. Operand 15852 states and 62792 transitions. [2023-12-02 17:01:15,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:01:15,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:01:15,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:01:15,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2023-12-02 17:01:15,419 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:01:15,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:01:15,419 INFO L85 PathProgramCache]: Analyzing trace with hash 396344614, now seen corresponding path program 187 times [2023-12-02 17:01:15,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:01:15,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806380352] [2023-12-02 17:01:15,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:01:15,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:01:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:01:16,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:01:16,614 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:01:16,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806380352] [2023-12-02 17:01:16,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806380352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:01:16,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:01:16,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:01:16,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007066589] [2023-12-02 17:01:16,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:01:16,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:01:16,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:01:16,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:01:16,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:01:16,615 INFO L87 Difference]: Start difference. First operand 15852 states and 62792 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:18,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:01:18,376 INFO L93 Difference]: Finished difference Result 31342 states and 118811 transitions. [2023-12-02 17:01:18,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:01:18,377 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:01:18,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:01:18,460 INFO L225 Difference]: With dead ends: 31342 [2023-12-02 17:01:18,460 INFO L226 Difference]: Without dead ends: 31185 [2023-12-02 17:01:18,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:01:18,460 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 449 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:01:18,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 990 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:01:18,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31185 states. [2023-12-02 17:01:18,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31185 to 15831. [2023-12-02 17:01:18,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15831 states, 15830 states have (on average 3.9619709412507897) internal successors, (62718), 15830 states have internal predecessors, (62718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:18,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15831 states to 15831 states and 62718 transitions. [2023-12-02 17:01:18,920 INFO L78 Accepts]: Start accepts. Automaton has 15831 states and 62718 transitions. Word has length 58 [2023-12-02 17:01:18,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:01:18,921 INFO L495 AbstractCegarLoop]: Abstraction has 15831 states and 62718 transitions. [2023-12-02 17:01:18,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:18,921 INFO L276 IsEmpty]: Start isEmpty. Operand 15831 states and 62718 transitions. [2023-12-02 17:01:18,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:01:18,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:01:18,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:01:18,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2023-12-02 17:01:18,948 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:01:18,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:01:18,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1881433940, now seen corresponding path program 188 times [2023-12-02 17:01:18,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:01:18,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365644516] [2023-12-02 17:01:18,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:01:18,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:01:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:01:20,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:01:20,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:01:20,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365644516] [2023-12-02 17:01:20,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365644516] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:01:20,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:01:20,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:01:20,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541799868] [2023-12-02 17:01:20,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:01:20,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:01:20,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:01:20,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:01:20,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:01:20,190 INFO L87 Difference]: Start difference. First operand 15831 states and 62718 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:21,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:01:21,956 INFO L93 Difference]: Finished difference Result 31183 states and 118380 transitions. [2023-12-02 17:01:21,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:01:21,956 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:01:21,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:01:22,041 INFO L225 Difference]: With dead ends: 31183 [2023-12-02 17:01:22,042 INFO L226 Difference]: Without dead ends: 30747 [2023-12-02 17:01:22,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:01:22,042 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 478 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:01:22,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 860 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:01:22,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30747 states. [2023-12-02 17:01:22,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30747 to 15621. [2023-12-02 17:01:22,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15621 states, 15620 states have (on average 3.9699743918053776) internal successors, (62011), 15620 states have internal predecessors, (62011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:22,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15621 states to 15621 states and 62011 transitions. [2023-12-02 17:01:22,501 INFO L78 Accepts]: Start accepts. Automaton has 15621 states and 62011 transitions. Word has length 58 [2023-12-02 17:01:22,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:01:22,501 INFO L495 AbstractCegarLoop]: Abstraction has 15621 states and 62011 transitions. [2023-12-02 17:01:22,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:22,501 INFO L276 IsEmpty]: Start isEmpty. Operand 15621 states and 62011 transitions. [2023-12-02 17:01:22,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:01:22,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:01:22,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:01:22,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2023-12-02 17:01:22,527 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:01:22,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:01:22,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1523765820, now seen corresponding path program 189 times [2023-12-02 17:01:22,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:01:22,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005868979] [2023-12-02 17:01:22,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:01:22,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:01:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:01:23,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:01:23,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:01:23,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005868979] [2023-12-02 17:01:23,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005868979] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:01:23,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:01:23,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:01:23,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791691719] [2023-12-02 17:01:23,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:01:23,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:01:23,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:01:23,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:01:23,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:01:23,653 INFO L87 Difference]: Start difference. First operand 15621 states and 62011 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:25,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:01:25,316 INFO L93 Difference]: Finished difference Result 31504 states and 119258 transitions. [2023-12-02 17:01:25,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 17:01:25,317 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:01:25,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:01:25,400 INFO L225 Difference]: With dead ends: 31504 [2023-12-02 17:01:25,400 INFO L226 Difference]: Without dead ends: 31371 [2023-12-02 17:01:25,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2023-12-02 17:01:25,401 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 478 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 1490 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:01:25,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 998 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1490 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:01:25,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31371 states. [2023-12-02 17:01:25,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31371 to 15669. [2023-12-02 17:01:25,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15669 states, 15668 states have (on average 3.9682792953791166) internal successors, (62175), 15668 states have internal predecessors, (62175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:25,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15669 states to 15669 states and 62175 transitions. [2023-12-02 17:01:25,864 INFO L78 Accepts]: Start accepts. Automaton has 15669 states and 62175 transitions. Word has length 58 [2023-12-02 17:01:25,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:01:25,864 INFO L495 AbstractCegarLoop]: Abstraction has 15669 states and 62175 transitions. [2023-12-02 17:01:25,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:25,864 INFO L276 IsEmpty]: Start isEmpty. Operand 15669 states and 62175 transitions. [2023-12-02 17:01:25,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:01:25,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:01:25,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:01:25,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2023-12-02 17:01:25,891 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:01:25,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:01:25,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1241113532, now seen corresponding path program 190 times [2023-12-02 17:01:25,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:01:25,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624471514] [2023-12-02 17:01:25,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:01:25,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:01:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:01:27,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:01:27,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:01:27,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624471514] [2023-12-02 17:01:27,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624471514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:01:27,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:01:27,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:01:27,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463840881] [2023-12-02 17:01:27,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:01:27,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:01:27,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:01:27,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:01:27,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:01:27,243 INFO L87 Difference]: Start difference. First operand 15669 states and 62175 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:29,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:01:29,046 INFO L93 Difference]: Finished difference Result 31507 states and 119243 transitions. [2023-12-02 17:01:29,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 17:01:29,046 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:01:29,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:01:29,131 INFO L225 Difference]: With dead ends: 31507 [2023-12-02 17:01:29,131 INFO L226 Difference]: Without dead ends: 31350 [2023-12-02 17:01:29,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2023-12-02 17:01:29,132 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 508 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:01:29,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 1016 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1501 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:01:29,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31350 states. [2023-12-02 17:01:29,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31350 to 15648. [2023-12-02 17:01:29,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15648 states, 15647 states have (on average 3.9696427430178307) internal successors, (62113), 15647 states have internal predecessors, (62113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:29,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15648 states to 15648 states and 62113 transitions. [2023-12-02 17:01:29,589 INFO L78 Accepts]: Start accepts. Automaton has 15648 states and 62113 transitions. Word has length 58 [2023-12-02 17:01:29,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:01:29,589 INFO L495 AbstractCegarLoop]: Abstraction has 15648 states and 62113 transitions. [2023-12-02 17:01:29,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:29,589 INFO L276 IsEmpty]: Start isEmpty. Operand 15648 states and 62113 transitions. [2023-12-02 17:01:29,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:01:29,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:01:29,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:01:29,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2023-12-02 17:01:29,616 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:01:29,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:01:29,616 INFO L85 PathProgramCache]: Analyzing trace with hash 621230052, now seen corresponding path program 191 times [2023-12-02 17:01:29,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:01:29,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173336549] [2023-12-02 17:01:29,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:01:29,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:01:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:01:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:01:30,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:01:30,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173336549] [2023-12-02 17:01:30,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173336549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:01:30,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:01:30,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:01:30,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042891251] [2023-12-02 17:01:30,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:01:30,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:01:30,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:01:30,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:01:30,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:01:30,823 INFO L87 Difference]: Start difference. First operand 15648 states and 62113 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:32,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:01:32,513 INFO L93 Difference]: Finished difference Result 31429 states and 119072 transitions. [2023-12-02 17:01:32,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 17:01:32,513 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:01:32,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:01:32,596 INFO L225 Difference]: With dead ends: 31429 [2023-12-02 17:01:32,596 INFO L226 Difference]: Without dead ends: 31296 [2023-12-02 17:01:32,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=438, Unknown=0, NotChecked=0, Total=650 [2023-12-02 17:01:32,597 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 499 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:01:32,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 914 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 17:01:32,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31296 states. [2023-12-02 17:01:32,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31296 to 15666. [2023-12-02 17:01:33,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15666 states, 15665 states have (on average 3.9680817108203) internal successors, (62160), 15665 states have internal predecessors, (62160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:33,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15666 states to 15666 states and 62160 transitions. [2023-12-02 17:01:33,057 INFO L78 Accepts]: Start accepts. Automaton has 15666 states and 62160 transitions. Word has length 58 [2023-12-02 17:01:33,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:01:33,057 INFO L495 AbstractCegarLoop]: Abstraction has 15666 states and 62160 transitions. [2023-12-02 17:01:33,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:33,057 INFO L276 IsEmpty]: Start isEmpty. Operand 15666 states and 62160 transitions. [2023-12-02 17:01:33,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:01:33,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:01:33,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:01:33,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2023-12-02 17:01:33,084 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:01:33,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:01:33,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1472997308, now seen corresponding path program 192 times [2023-12-02 17:01:33,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:01:33,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58753529] [2023-12-02 17:01:33,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:01:33,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:01:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:01:34,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:01:34,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:01:34,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58753529] [2023-12-02 17:01:34,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58753529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:01:34,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:01:34,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:01:34,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564204267] [2023-12-02 17:01:34,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:01:34,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:01:34,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:01:34,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:01:34,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:01:34,357 INFO L87 Difference]: Start difference. First operand 15666 states and 62160 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:36,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:01:36,067 INFO L93 Difference]: Finished difference Result 31297 states and 118658 transitions. [2023-12-02 17:01:36,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 17:01:36,067 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:01:36,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:01:36,150 INFO L225 Difference]: With dead ends: 31297 [2023-12-02 17:01:36,150 INFO L226 Difference]: Without dead ends: 31152 [2023-12-02 17:01:36,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=194, Invalid=406, Unknown=0, NotChecked=0, Total=600 [2023-12-02 17:01:36,151 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 426 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:01:36,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 986 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 17:01:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31152 states. [2023-12-02 17:01:36,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31152 to 15648. [2023-12-02 17:01:36,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15648 states, 15647 states have (on average 3.9690675528855373) internal successors, (62104), 15647 states have internal predecessors, (62104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:36,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15648 states to 15648 states and 62104 transitions. [2023-12-02 17:01:36,605 INFO L78 Accepts]: Start accepts. Automaton has 15648 states and 62104 transitions. Word has length 58 [2023-12-02 17:01:36,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:01:36,606 INFO L495 AbstractCegarLoop]: Abstraction has 15648 states and 62104 transitions. [2023-12-02 17:01:36,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:36,606 INFO L276 IsEmpty]: Start isEmpty. Operand 15648 states and 62104 transitions. [2023-12-02 17:01:36,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:01:36,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:01:36,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:01:36,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2023-12-02 17:01:36,633 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:01:36,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:01:36,633 INFO L85 PathProgramCache]: Analyzing trace with hash -796765692, now seen corresponding path program 193 times [2023-12-02 17:01:36,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:01:36,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533496691] [2023-12-02 17:01:36,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:01:36,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:01:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:01:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:01:37,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:01:37,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533496691] [2023-12-02 17:01:37,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533496691] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:01:37,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:01:37,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:01:37,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274511346] [2023-12-02 17:01:37,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:01:37,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:01:37,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:01:37,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:01:37,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:01:37,927 INFO L87 Difference]: Start difference. First operand 15648 states and 62104 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:39,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:01:39,909 INFO L93 Difference]: Finished difference Result 31480 states and 119157 transitions. [2023-12-02 17:01:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 17:01:39,910 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:01:39,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:01:39,994 INFO L225 Difference]: With dead ends: 31480 [2023-12-02 17:01:39,994 INFO L226 Difference]: Without dead ends: 31344 [2023-12-02 17:01:39,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2023-12-02 17:01:39,994 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 488 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:01:39,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1082 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 17:01:40,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31344 states. [2023-12-02 17:01:40,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31344 to 15666. [2023-12-02 17:01:40,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15666 states, 15665 states have (on average 3.9675071816150655) internal successors, (62151), 15665 states have internal predecessors, (62151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:40,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15666 states to 15666 states and 62151 transitions. [2023-12-02 17:01:40,462 INFO L78 Accepts]: Start accepts. Automaton has 15666 states and 62151 transitions. Word has length 58 [2023-12-02 17:01:40,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:01:40,463 INFO L495 AbstractCegarLoop]: Abstraction has 15666 states and 62151 transitions. [2023-12-02 17:01:40,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:40,463 INFO L276 IsEmpty]: Start isEmpty. Operand 15666 states and 62151 transitions. [2023-12-02 17:01:40,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:01:40,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:01:40,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:01:40,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2023-12-02 17:01:40,490 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:01:40,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:01:40,490 INFO L85 PathProgramCache]: Analyzing trace with hash 103711716, now seen corresponding path program 194 times [2023-12-02 17:01:40,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:01:40,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217281299] [2023-12-02 17:01:40,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:01:40,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:01:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:01:41,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:01:41,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:01:41,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217281299] [2023-12-02 17:01:41,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217281299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:01:41,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:01:41,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:01:41,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971226487] [2023-12-02 17:01:41,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:01:41,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:01:41,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:01:41,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:01:41,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:01:41,922 INFO L87 Difference]: Start difference. First operand 15666 states and 62151 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:43,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:01:43,846 INFO L93 Difference]: Finished difference Result 31435 states and 119006 transitions. [2023-12-02 17:01:43,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 17:01:43,847 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:01:43,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:01:43,938 INFO L225 Difference]: With dead ends: 31435 [2023-12-02 17:01:43,938 INFO L226 Difference]: Without dead ends: 31281 [2023-12-02 17:01:43,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2023-12-02 17:01:43,939 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 480 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:01:43,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 973 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 17:01:43,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31281 states. [2023-12-02 17:01:44,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31281 to 15639. [2023-12-02 17:01:44,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15639 states, 15638 states have (on average 3.9695613249776187) internal successors, (62076), 15638 states have internal predecessors, (62076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:44,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15639 states to 15639 states and 62076 transitions. [2023-12-02 17:01:44,392 INFO L78 Accepts]: Start accepts. Automaton has 15639 states and 62076 transitions. Word has length 58 [2023-12-02 17:01:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:01:44,392 INFO L495 AbstractCegarLoop]: Abstraction has 15639 states and 62076 transitions. [2023-12-02 17:01:44,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:44,392 INFO L276 IsEmpty]: Start isEmpty. Operand 15639 states and 62076 transitions. [2023-12-02 17:01:44,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:01:44,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:01:44,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:01:44,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2023-12-02 17:01:44,419 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:01:44,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:01:44,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1317247102, now seen corresponding path program 195 times [2023-12-02 17:01:44,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:01:44,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939948290] [2023-12-02 17:01:44,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:01:44,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:01:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:01:45,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:01:45,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:01:45,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939948290] [2023-12-02 17:01:45,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939948290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:01:45,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:01:45,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:01:45,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831229470] [2023-12-02 17:01:45,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:01:45,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:01:45,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:01:45,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:01:45,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:01:45,844 INFO L87 Difference]: Start difference. First operand 15639 states and 62076 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:47,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:01:47,816 INFO L93 Difference]: Finished difference Result 31573 states and 119484 transitions. [2023-12-02 17:01:47,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 17:01:47,816 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:01:47,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:01:47,899 INFO L225 Difference]: With dead ends: 31573 [2023-12-02 17:01:47,900 INFO L226 Difference]: Without dead ends: 31440 [2023-12-02 17:01:47,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=215, Invalid=435, Unknown=0, NotChecked=0, Total=650 [2023-12-02 17:01:47,900 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 481 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:01:47,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 980 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:01:47,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31440 states. [2023-12-02 17:01:48,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31440 to 15702. [2023-12-02 17:01:48,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15702 states, 15701 states have (on average 3.966435258900707) internal successors, (62277), 15701 states have internal predecessors, (62277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:48,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15702 states to 15702 states and 62277 transitions. [2023-12-02 17:01:48,364 INFO L78 Accepts]: Start accepts. Automaton has 15702 states and 62277 transitions. Word has length 58 [2023-12-02 17:01:48,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:01:48,364 INFO L495 AbstractCegarLoop]: Abstraction has 15702 states and 62277 transitions. [2023-12-02 17:01:48,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:48,364 INFO L276 IsEmpty]: Start isEmpty. Operand 15702 states and 62277 transitions. [2023-12-02 17:01:48,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:01:48,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:01:48,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:01:48,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2023-12-02 17:01:48,391 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:01:48,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:01:48,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1034594814, now seen corresponding path program 196 times [2023-12-02 17:01:48,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:01:48,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077440304] [2023-12-02 17:01:48,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:01:48,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:01:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:01:49,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:01:49,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:01:49,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077440304] [2023-12-02 17:01:49,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077440304] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:01:49,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:01:49,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:01:49,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130779032] [2023-12-02 17:01:49,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:01:49,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:01:49,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:01:49,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:01:49,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:01:49,699 INFO L87 Difference]: Start difference. First operand 15702 states and 62277 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:51,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:01:51,568 INFO L93 Difference]: Finished difference Result 31450 states and 119088 transitions. [2023-12-02 17:01:51,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 17:01:51,568 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:01:51,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:01:51,652 INFO L225 Difference]: With dead ends: 31450 [2023-12-02 17:01:51,652 INFO L226 Difference]: Without dead ends: 31293 [2023-12-02 17:01:51,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=198, Invalid=402, Unknown=0, NotChecked=0, Total=600 [2023-12-02 17:01:51,653 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 458 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:01:51,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 928 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:01:51,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31293 states. [2023-12-02 17:01:52,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31293 to 15681. [2023-12-02 17:01:52,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15681 states, 15680 states have (on average 3.96702806122449) internal successors, (62203), 15680 states have internal predecessors, (62203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:52,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15681 states to 15681 states and 62203 transitions. [2023-12-02 17:01:52,126 INFO L78 Accepts]: Start accepts. Automaton has 15681 states and 62203 transitions. Word has length 58 [2023-12-02 17:01:52,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:01:52,127 INFO L495 AbstractCegarLoop]: Abstraction has 15681 states and 62203 transitions. [2023-12-02 17:01:52,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:52,127 INFO L276 IsEmpty]: Start isEmpty. Operand 15681 states and 62203 transitions. [2023-12-02 17:01:52,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:01:52,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:01:52,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:01:52,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2023-12-02 17:01:52,154 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:01:52,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:01:52,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1963247788, now seen corresponding path program 197 times [2023-12-02 17:01:52,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:01:52,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007761854] [2023-12-02 17:01:52,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:01:52,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:01:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:01:53,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:01:53,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:01:53,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007761854] [2023-12-02 17:01:53,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007761854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:01:53,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:01:53,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:01:53,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141626417] [2023-12-02 17:01:53,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:01:53,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:01:53,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:01:53,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:01:53,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:01:53,426 INFO L87 Difference]: Start difference. First operand 15681 states and 62203 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:55,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:01:55,203 INFO L93 Difference]: Finished difference Result 31381 states and 118923 transitions. [2023-12-02 17:01:55,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 17:01:55,203 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:01:55,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:01:55,289 INFO L225 Difference]: With dead ends: 31381 [2023-12-02 17:01:55,289 INFO L226 Difference]: Without dead ends: 31113 [2023-12-02 17:01:55,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2023-12-02 17:01:55,290 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 464 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:01:55,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 889 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 17:01:55,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31113 states. [2023-12-02 17:01:55,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31113 to 15639. [2023-12-02 17:01:55,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15639 states, 15638 states have (on average 3.9684102826448395) internal successors, (62058), 15638 states have internal predecessors, (62058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:55,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15639 states to 15639 states and 62058 transitions. [2023-12-02 17:01:55,755 INFO L78 Accepts]: Start accepts. Automaton has 15639 states and 62058 transitions. Word has length 58 [2023-12-02 17:01:55,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:01:55,755 INFO L495 AbstractCegarLoop]: Abstraction has 15639 states and 62058 transitions. [2023-12-02 17:01:55,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:55,755 INFO L276 IsEmpty]: Start isEmpty. Operand 15639 states and 62058 transitions. [2023-12-02 17:01:55,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:01:55,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:01:55,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:01:55,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2023-12-02 17:01:55,781 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:01:55,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:01:55,782 INFO L85 PathProgramCache]: Analyzing trace with hash 444934322, now seen corresponding path program 198 times [2023-12-02 17:01:55,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:01:55,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702977731] [2023-12-02 17:01:55,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:01:55,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:01:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:01:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:01:57,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:01:57,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702977731] [2023-12-02 17:01:57,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702977731] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:01:57,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:01:57,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:01:57,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733718340] [2023-12-02 17:01:57,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:01:57,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:01:57,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:01:57,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:01:57,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:01:57,211 INFO L87 Difference]: Start difference. First operand 15639 states and 62058 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:59,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:01:59,058 INFO L93 Difference]: Finished difference Result 31174 states and 118228 transitions. [2023-12-02 17:01:59,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 17:01:59,059 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:01:59,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:01:59,150 INFO L225 Difference]: With dead ends: 31174 [2023-12-02 17:01:59,150 INFO L226 Difference]: Without dead ends: 31038 [2023-12-02 17:01:59,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2023-12-02 17:01:59,150 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 501 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:01:59,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 885 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:01:59,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31038 states. [2023-12-02 17:01:59,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31038 to 15693. [2023-12-02 17:01:59,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15693 states, 15692 states have (on average 3.9660336477185827) internal successors, (62235), 15692 states have internal predecessors, (62235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:59,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15693 states to 15693 states and 62235 transitions. [2023-12-02 17:01:59,611 INFO L78 Accepts]: Start accepts. Automaton has 15693 states and 62235 transitions. Word has length 58 [2023-12-02 17:01:59,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:01:59,611 INFO L495 AbstractCegarLoop]: Abstraction has 15693 states and 62235 transitions. [2023-12-02 17:01:59,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:01:59,611 INFO L276 IsEmpty]: Start isEmpty. Operand 15693 states and 62235 transitions. [2023-12-02 17:01:59,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:01:59,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:01:59,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:01:59,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2023-12-02 17:01:59,638 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:01:59,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:01:59,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1345411730, now seen corresponding path program 199 times [2023-12-02 17:01:59,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:01:59,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975869303] [2023-12-02 17:01:59,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:01:59,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:01:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:02:00,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:02:00,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:02:00,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975869303] [2023-12-02 17:02:00,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975869303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:02:00,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:02:00,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:02:00,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12606122] [2023-12-02 17:02:00,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:02:00,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:02:00,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:02:00,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:02:00,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:02:00,825 INFO L87 Difference]: Start difference. First operand 15693 states and 62235 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:02,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:02:02,482 INFO L93 Difference]: Finished difference Result 31036 states and 117853 transitions. [2023-12-02 17:02:02,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 17:02:02,482 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:02:02,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:02:02,565 INFO L225 Difference]: With dead ends: 31036 [2023-12-02 17:02:02,565 INFO L226 Difference]: Without dead ends: 30891 [2023-12-02 17:02:02,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2023-12-02 17:02:02,565 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 498 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:02:02,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 895 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 17:02:02,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30891 states. [2023-12-02 17:02:02,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30891 to 15675. [2023-12-02 17:02:02,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15675 states, 15674 states have (on average 3.9664412402705116) internal successors, (62170), 15674 states have internal predecessors, (62170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:03,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15675 states to 15675 states and 62170 transitions. [2023-12-02 17:02:03,027 INFO L78 Accepts]: Start accepts. Automaton has 15675 states and 62170 transitions. Word has length 58 [2023-12-02 17:02:03,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:02:03,027 INFO L495 AbstractCegarLoop]: Abstraction has 15675 states and 62170 transitions. [2023-12-02 17:02:03,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:03,027 INFO L276 IsEmpty]: Start isEmpty. Operand 15675 states and 62170 transitions. [2023-12-02 17:02:03,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:02:03,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:02:03,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:02:03,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2023-12-02 17:02:03,055 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:02:03,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:02:03,055 INFO L85 PathProgramCache]: Analyzing trace with hash 313048884, now seen corresponding path program 200 times [2023-12-02 17:02:03,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:02:03,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442537545] [2023-12-02 17:02:03,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:02:03,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:02:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:02:04,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:02:04,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:02:04,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442537545] [2023-12-02 17:02:04,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442537545] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:02:04,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:02:04,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:02:04,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860267543] [2023-12-02 17:02:04,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:02:04,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:02:04,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:02:04,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:02:04,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:02:04,262 INFO L87 Difference]: Start difference. First operand 15675 states and 62170 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:06,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:02:06,155 INFO L93 Difference]: Finished difference Result 30889 states and 117452 transitions. [2023-12-02 17:02:06,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 17:02:06,155 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:02:06,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:02:06,238 INFO L225 Difference]: With dead ends: 30889 [2023-12-02 17:02:06,238 INFO L226 Difference]: Without dead ends: 30471 [2023-12-02 17:02:06,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2023-12-02 17:02:06,238 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 409 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:02:06,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 979 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 17:02:06,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30471 states. [2023-12-02 17:02:06,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30471 to 15483. [2023-12-02 17:02:06,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15483 states, 15482 states have (on average 3.9810102053998193) internal successors, (61634), 15482 states have internal predecessors, (61634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:06,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15483 states to 15483 states and 61634 transitions. [2023-12-02 17:02:06,688 INFO L78 Accepts]: Start accepts. Automaton has 15483 states and 61634 transitions. Word has length 58 [2023-12-02 17:02:06,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:02:06,688 INFO L495 AbstractCegarLoop]: Abstraction has 15483 states and 61634 transitions. [2023-12-02 17:02:06,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:06,688 INFO L276 IsEmpty]: Start isEmpty. Operand 15483 states and 61634 transitions. [2023-12-02 17:02:06,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:02:06,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:02:06,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:02:06,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2023-12-02 17:02:06,716 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:02:06,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:02:06,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1105633928, now seen corresponding path program 201 times [2023-12-02 17:02:06,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:02:06,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669120345] [2023-12-02 17:02:06,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:02:06,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:02:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:02:07,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:02:07,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:02:07,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669120345] [2023-12-02 17:02:07,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669120345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:02:07,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:02:07,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:02:07,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47850051] [2023-12-02 17:02:07,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:02:07,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:02:07,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:02:07,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:02:07,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:02:07,934 INFO L87 Difference]: Start difference. First operand 15483 states and 61634 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:09,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:02:09,630 INFO L93 Difference]: Finished difference Result 32653 states and 123267 transitions. [2023-12-02 17:02:09,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:02:09,630 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:02:09,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:02:09,717 INFO L225 Difference]: With dead ends: 32653 [2023-12-02 17:02:09,717 INFO L226 Difference]: Without dead ends: 32520 [2023-12-02 17:02:09,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=156, Invalid=350, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:02:09,718 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 598 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:02:09,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 970 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 17:02:09,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32520 states. [2023-12-02 17:02:10,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32520 to 15582. [2023-12-02 17:02:10,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15582 states, 15581 states have (on average 3.980745780116809) internal successors, (62024), 15581 states have internal predecessors, (62024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:10,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15582 states to 15582 states and 62024 transitions. [2023-12-02 17:02:10,190 INFO L78 Accepts]: Start accepts. Automaton has 15582 states and 62024 transitions. Word has length 58 [2023-12-02 17:02:10,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:02:10,190 INFO L495 AbstractCegarLoop]: Abstraction has 15582 states and 62024 transitions. [2023-12-02 17:02:10,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:10,191 INFO L276 IsEmpty]: Start isEmpty. Operand 15582 states and 62024 transitions. [2023-12-02 17:02:10,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:02:10,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:02:10,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:02:10,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2023-12-02 17:02:10,218 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:02:10,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:02:10,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1118970776, now seen corresponding path program 202 times [2023-12-02 17:02:10,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:02:10,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577888097] [2023-12-02 17:02:10,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:02:10,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:02:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:02:11,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:02:11,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:02:11,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577888097] [2023-12-02 17:02:11,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577888097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:02:11,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:02:11,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:02:11,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256088782] [2023-12-02 17:02:11,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:02:11,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:02:11,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:02:11,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:02:11,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:02:11,505 INFO L87 Difference]: Start difference. First operand 15582 states and 62024 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:13,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:02:13,190 INFO L93 Difference]: Finished difference Result 32518 states and 122904 transitions. [2023-12-02 17:02:13,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:02:13,190 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:02:13,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:02:13,278 INFO L225 Difference]: With dead ends: 32518 [2023-12-02 17:02:13,278 INFO L226 Difference]: Without dead ends: 32391 [2023-12-02 17:02:13,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:02:13,278 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 486 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:02:13,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 912 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 17:02:13,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32391 states. [2023-12-02 17:02:13,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32391 to 15570. [2023-12-02 17:02:13,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15570 states, 15569 states have (on average 3.9809878604920033) internal successors, (61980), 15569 states have internal predecessors, (61980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:13,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15570 states to 15570 states and 61980 transitions. [2023-12-02 17:02:13,754 INFO L78 Accepts]: Start accepts. Automaton has 15570 states and 61980 transitions. Word has length 58 [2023-12-02 17:02:13,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:02:13,754 INFO L495 AbstractCegarLoop]: Abstraction has 15570 states and 61980 transitions. [2023-12-02 17:02:13,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:13,754 INFO L276 IsEmpty]: Start isEmpty. Operand 15570 states and 61980 transitions. [2023-12-02 17:02:13,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:02:13,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:02:13,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:02:13,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2023-12-02 17:02:13,780 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:02:13,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:02:13,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1082220406, now seen corresponding path program 203 times [2023-12-02 17:02:13,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:02:13,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021081640] [2023-12-02 17:02:13,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:02:13,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:02:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:02:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:02:15,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:02:15,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021081640] [2023-12-02 17:02:15,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021081640] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:02:15,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:02:15,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:02:15,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028736291] [2023-12-02 17:02:15,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:02:15,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:02:15,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:02:15,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:02:15,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:02:15,218 INFO L87 Difference]: Start difference. First operand 15570 states and 61980 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:17,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:02:17,297 INFO L93 Difference]: Finished difference Result 32650 states and 123292 transitions. [2023-12-02 17:02:17,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:02:17,298 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:02:17,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:02:17,384 INFO L225 Difference]: With dead ends: 32650 [2023-12-02 17:02:17,384 INFO L226 Difference]: Without dead ends: 32355 [2023-12-02 17:02:17,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=350, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:02:17,384 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 519 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:02:17,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 953 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 17:02:17,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32355 states. [2023-12-02 17:02:17,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32355 to 15534. [2023-12-02 17:02:17,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15534 states, 15533 states have (on average 3.981330071460761) internal successors, (61842), 15533 states have internal predecessors, (61842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:17,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15534 states to 15534 states and 61842 transitions. [2023-12-02 17:02:17,850 INFO L78 Accepts]: Start accepts. Automaton has 15534 states and 61842 transitions. Word has length 58 [2023-12-02 17:02:17,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:02:17,850 INFO L495 AbstractCegarLoop]: Abstraction has 15534 states and 61842 transitions. [2023-12-02 17:02:17,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:17,850 INFO L276 IsEmpty]: Start isEmpty. Operand 15534 states and 61842 transitions. [2023-12-02 17:02:17,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:02:17,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:02:17,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:02:17,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2023-12-02 17:02:17,876 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:02:17,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:02:17,877 INFO L85 PathProgramCache]: Analyzing trace with hash 927978922, now seen corresponding path program 204 times [2023-12-02 17:02:17,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:02:17,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524084189] [2023-12-02 17:02:17,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:02:17,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:02:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:02:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:02:19,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:02:19,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524084189] [2023-12-02 17:02:19,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524084189] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:02:19,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:02:19,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:02:19,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746119226] [2023-12-02 17:02:19,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:02:19,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:02:19,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:02:19,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:02:19,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:02:19,420 INFO L87 Difference]: Start difference. First operand 15534 states and 61842 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:21,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:02:21,284 INFO L93 Difference]: Finished difference Result 32575 states and 123012 transitions. [2023-12-02 17:02:21,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:02:21,284 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:02:21,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:02:21,370 INFO L225 Difference]: With dead ends: 32575 [2023-12-02 17:02:21,370 INFO L226 Difference]: Without dead ends: 32442 [2023-12-02 17:02:21,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:02:21,370 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 501 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:02:21,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 1023 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 17:02:21,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32442 states. [2023-12-02 17:02:21,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32442 to 15552. [2023-12-02 17:02:21,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15552 states, 15551 states have (on average 3.980387113368915) internal successors, (61899), 15551 states have internal predecessors, (61899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:21,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15552 states to 15552 states and 61899 transitions. [2023-12-02 17:02:21,836 INFO L78 Accepts]: Start accepts. Automaton has 15552 states and 61899 transitions. Word has length 58 [2023-12-02 17:02:21,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:02:21,836 INFO L495 AbstractCegarLoop]: Abstraction has 15552 states and 61899 transitions. [2023-12-02 17:02:21,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:21,836 INFO L276 IsEmpty]: Start isEmpty. Operand 15552 states and 61899 transitions. [2023-12-02 17:02:21,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:02:21,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:02:21,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:02:21,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2023-12-02 17:02:21,863 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:02:21,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:02:21,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1296625782, now seen corresponding path program 205 times [2023-12-02 17:02:21,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:02:21,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113313355] [2023-12-02 17:02:21,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:02:21,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:02:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:02:23,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:02:23,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:02:23,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113313355] [2023-12-02 17:02:23,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113313355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:02:23,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:02:23,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:02:23,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329252313] [2023-12-02 17:02:23,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:02:23,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:02:23,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:02:23,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:02:23,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:02:23,176 INFO L87 Difference]: Start difference. First operand 15552 states and 61899 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:25,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:02:25,035 INFO L93 Difference]: Finished difference Result 32557 states and 122949 transitions. [2023-12-02 17:02:25,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:02:25,035 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:02:25,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:02:25,123 INFO L225 Difference]: With dead ends: 32557 [2023-12-02 17:02:25,123 INFO L226 Difference]: Without dead ends: 32430 [2023-12-02 17:02:25,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:02:25,123 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 476 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 1580 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:02:25,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 1051 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1580 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 17:02:25,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32430 states. [2023-12-02 17:02:25,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32430 to 15540. [2023-12-02 17:02:25,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15540 states, 15539 states have (on average 3.981015509363537) internal successors, (61861), 15539 states have internal predecessors, (61861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15540 states to 15540 states and 61861 transitions. [2023-12-02 17:02:25,592 INFO L78 Accepts]: Start accepts. Automaton has 15540 states and 61861 transitions. Word has length 58 [2023-12-02 17:02:25,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:02:25,593 INFO L495 AbstractCegarLoop]: Abstraction has 15540 states and 61861 transitions. [2023-12-02 17:02:25,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:25,593 INFO L276 IsEmpty]: Start isEmpty. Operand 15540 states and 61861 transitions. [2023-12-02 17:02:25,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:02:25,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:02:25,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:02:25,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2023-12-02 17:02:25,620 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:02:25,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:02:25,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2143850616, now seen corresponding path program 206 times [2023-12-02 17:02:25,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:02:25,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830052869] [2023-12-02 17:02:25,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:02:25,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:02:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:02:27,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:02:27,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:02:27,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830052869] [2023-12-02 17:02:27,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830052869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:02:27,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:02:27,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:02:27,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756025529] [2023-12-02 17:02:27,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:02:27,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:02:27,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:02:27,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:02:27,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:02:27,033 INFO L87 Difference]: Start difference. First operand 15540 states and 61861 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:28,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:02:28,785 INFO L93 Difference]: Finished difference Result 32605 states and 123093 transitions. [2023-12-02 17:02:28,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:02:28,785 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:02:28,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:02:28,870 INFO L225 Difference]: With dead ends: 32605 [2023-12-02 17:02:28,870 INFO L226 Difference]: Without dead ends: 32472 [2023-12-02 17:02:28,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:02:28,871 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 603 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:02:28,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 909 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:02:28,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32472 states. [2023-12-02 17:02:29,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32472 to 15561. [2023-12-02 17:02:29,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15561 states, 15560 states have (on average 3.9790488431876607) internal successors, (61914), 15560 states have internal predecessors, (61914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:29,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15561 states to 15561 states and 61914 transitions. [2023-12-02 17:02:29,334 INFO L78 Accepts]: Start accepts. Automaton has 15561 states and 61914 transitions. Word has length 58 [2023-12-02 17:02:29,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:02:29,334 INFO L495 AbstractCegarLoop]: Abstraction has 15561 states and 61914 transitions. [2023-12-02 17:02:29,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:29,334 INFO L276 IsEmpty]: Start isEmpty. Operand 15561 states and 61914 transitions. [2023-12-02 17:02:29,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:02:29,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:02:29,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:02:29,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2023-12-02 17:02:29,361 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:02:29,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:02:29,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1108172266, now seen corresponding path program 207 times [2023-12-02 17:02:29,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:02:29,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396045539] [2023-12-02 17:02:29,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:02:29,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:02:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:02:30,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:02:30,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:02:30,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396045539] [2023-12-02 17:02:30,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396045539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:02:30,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:02:30,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:02:30,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442049084] [2023-12-02 17:02:30,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:02:30,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:02:30,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:02:30,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:02:30,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:02:30,625 INFO L87 Difference]: Start difference. First operand 15561 states and 61914 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:32,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:02:32,384 INFO L93 Difference]: Finished difference Result 32608 states and 123078 transitions. [2023-12-02 17:02:32,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:02:32,384 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:02:32,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:02:32,472 INFO L225 Difference]: With dead ends: 32608 [2023-12-02 17:02:32,472 INFO L226 Difference]: Without dead ends: 32451 [2023-12-02 17:02:32,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:02:32,473 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 540 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 1423 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:02:32,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 939 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1423 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:02:32,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32451 states. [2023-12-02 17:02:32,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32451 to 15540. [2023-12-02 17:02:32,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15540 states, 15539 states have (on average 3.980629384130253) internal successors, (61855), 15539 states have internal predecessors, (61855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:32,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15540 states to 15540 states and 61855 transitions. [2023-12-02 17:02:32,946 INFO L78 Accepts]: Start accepts. Automaton has 15540 states and 61855 transitions. Word has length 58 [2023-12-02 17:02:32,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:02:32,946 INFO L495 AbstractCegarLoop]: Abstraction has 15540 states and 61855 transitions. [2023-12-02 17:02:32,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:32,946 INFO L276 IsEmpty]: Start isEmpty. Operand 15540 states and 61855 transitions. [2023-12-02 17:02:32,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:02:32,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:02:32,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:02:32,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2023-12-02 17:02:32,973 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:02:32,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:02:32,973 INFO L85 PathProgramCache]: Analyzing trace with hash 731835752, now seen corresponding path program 208 times [2023-12-02 17:02:32,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:02:32,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154403790] [2023-12-02 17:02:32,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:02:32,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:02:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:02:34,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:02:34,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:02:34,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154403790] [2023-12-02 17:02:34,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154403790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:02:34,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:02:34,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:02:34,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760270774] [2023-12-02 17:02:34,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:02:34,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:02:34,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:02:34,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:02:34,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:02:34,388 INFO L87 Difference]: Start difference. First operand 15540 states and 61855 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:36,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:02:36,083 INFO L93 Difference]: Finished difference Result 32386 states and 122478 transitions. [2023-12-02 17:02:36,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:02:36,084 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:02:36,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:02:36,170 INFO L225 Difference]: With dead ends: 32386 [2023-12-02 17:02:36,170 INFO L226 Difference]: Without dead ends: 32271 [2023-12-02 17:02:36,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:02:36,170 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 452 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:02:36,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 1031 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1556 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:02:36,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32271 states. [2023-12-02 17:02:36,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32271 to 15552. [2023-12-02 17:02:36,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15552 states, 15551 states have (on average 3.979615458812938) internal successors, (61887), 15551 states have internal predecessors, (61887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:36,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15552 states to 15552 states and 61887 transitions. [2023-12-02 17:02:36,636 INFO L78 Accepts]: Start accepts. Automaton has 15552 states and 61887 transitions. Word has length 58 [2023-12-02 17:02:36,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:02:36,636 INFO L495 AbstractCegarLoop]: Abstraction has 15552 states and 61887 transitions. [2023-12-02 17:02:36,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:36,636 INFO L276 IsEmpty]: Start isEmpty. Operand 15552 states and 61887 transitions. [2023-12-02 17:02:36,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:02:36,663 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:02:36,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:02:36,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2023-12-02 17:02:36,663 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:02:36,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:02:36,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2138202166, now seen corresponding path program 209 times [2023-12-02 17:02:36,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:02:36,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088654179] [2023-12-02 17:02:36,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:02:36,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:02:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:02:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:02:37,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:02:37,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088654179] [2023-12-02 17:02:37,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088654179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:02:37,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:02:37,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:02:37,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948131008] [2023-12-02 17:02:37,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:02:37,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:02:37,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:02:37,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:02:37,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:02:37,833 INFO L87 Difference]: Start difference. First operand 15552 states and 61887 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:39,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:02:39,547 INFO L93 Difference]: Finished difference Result 32407 states and 122523 transitions. [2023-12-02 17:02:39,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:02:39,547 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:02:39,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:02:39,634 INFO L225 Difference]: With dead ends: 32407 [2023-12-02 17:02:39,634 INFO L226 Difference]: Without dead ends: 32253 [2023-12-02 17:02:39,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:02:39,634 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 498 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:02:39,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 941 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 17:02:39,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32253 states. [2023-12-02 17:02:40,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32253 to 15534. [2023-12-02 17:02:40,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15534 states, 15533 states have (on average 3.9809437970771904) internal successors, (61836), 15533 states have internal predecessors, (61836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:40,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15534 states to 15534 states and 61836 transitions. [2023-12-02 17:02:40,101 INFO L78 Accepts]: Start accepts. Automaton has 15534 states and 61836 transitions. Word has length 58 [2023-12-02 17:02:40,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:02:40,101 INFO L495 AbstractCegarLoop]: Abstraction has 15534 states and 61836 transitions. [2023-12-02 17:02:40,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:40,101 INFO L276 IsEmpty]: Start isEmpty. Operand 15534 states and 61836 transitions. [2023-12-02 17:02:40,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:02:40,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:02:40,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:02:40,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2023-12-02 17:02:40,128 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:02:40,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:02:40,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1642077036, now seen corresponding path program 210 times [2023-12-02 17:02:40,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:02:40,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171457956] [2023-12-02 17:02:40,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:02:40,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:02:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:02:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:02:41,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:02:41,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171457956] [2023-12-02 17:02:41,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171457956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:02:41,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:02:41,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:02:41,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616359516] [2023-12-02 17:02:41,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:02:41,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:02:41,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:02:41,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:02:41,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:02:41,566 INFO L87 Difference]: Start difference. First operand 15534 states and 61836 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:43,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:02:43,464 INFO L93 Difference]: Finished difference Result 32707 states and 123457 transitions. [2023-12-02 17:02:43,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:02:43,465 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:02:43,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:02:43,551 INFO L225 Difference]: With dead ends: 32707 [2023-12-02 17:02:43,551 INFO L226 Difference]: Without dead ends: 32448 [2023-12-02 17:02:43,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:02:43,551 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 491 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:02:43,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 993 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 17:02:43,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32448 states. [2023-12-02 17:02:43,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32448 to 15597. [2023-12-02 17:02:43,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15597 states, 15596 states have (on average 3.9750577071043858) internal successors, (61995), 15596 states have internal predecessors, (61995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:44,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15597 states to 15597 states and 61995 transitions. [2023-12-02 17:02:44,015 INFO L78 Accepts]: Start accepts. Automaton has 15597 states and 61995 transitions. Word has length 58 [2023-12-02 17:02:44,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:02:44,016 INFO L495 AbstractCegarLoop]: Abstraction has 15597 states and 61995 transitions. [2023-12-02 17:02:44,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:44,016 INFO L276 IsEmpty]: Start isEmpty. Operand 15597 states and 61995 transitions. [2023-12-02 17:02:44,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:02:44,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:02:44,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:02:44,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2023-12-02 17:02:44,043 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:02:44,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:02:44,043 INFO L85 PathProgramCache]: Analyzing trace with hash -137890550, now seen corresponding path program 211 times [2023-12-02 17:02:44,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:02:44,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244274055] [2023-12-02 17:02:44,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:02:44,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:02:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:02:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:02:45,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:02:45,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244274055] [2023-12-02 17:02:45,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244274055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:02:45,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:02:45,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:02:45,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170285106] [2023-12-02 17:02:45,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:02:45,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:02:45,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:02:45,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:02:45,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:02:45,363 INFO L87 Difference]: Start difference. First operand 15597 states and 61995 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:46,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:02:46,991 INFO L93 Difference]: Finished difference Result 32740 states and 123444 transitions. [2023-12-02 17:02:46,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:02:46,992 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:02:46,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:02:47,079 INFO L225 Difference]: With dead ends: 32740 [2023-12-02 17:02:47,079 INFO L226 Difference]: Without dead ends: 32607 [2023-12-02 17:02:47,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:02:47,080 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 489 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:02:47,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 952 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 17:02:47,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32607 states. [2023-12-02 17:02:47,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32607 to 15618. [2023-12-02 17:02:47,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15618 states, 15617 states have (on average 3.9731062303899596) internal successors, (62048), 15617 states have internal predecessors, (62048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:47,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15618 states to 15618 states and 62048 transitions. [2023-12-02 17:02:47,559 INFO L78 Accepts]: Start accepts. Automaton has 15618 states and 62048 transitions. Word has length 58 [2023-12-02 17:02:47,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:02:47,559 INFO L495 AbstractCegarLoop]: Abstraction has 15618 states and 62048 transitions. [2023-12-02 17:02:47,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:47,560 INFO L276 IsEmpty]: Start isEmpty. Operand 15618 states and 62048 transitions. [2023-12-02 17:02:47,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:02:47,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:02:47,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:02:47,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2023-12-02 17:02:47,590 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:02:47,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:02:47,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1180834964, now seen corresponding path program 212 times [2023-12-02 17:02:47,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:02:47,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470144150] [2023-12-02 17:02:47,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:02:47,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:02:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:02:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:02:48,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:02:48,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470144150] [2023-12-02 17:02:48,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470144150] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:02:48,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:02:48,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:02:48,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277511845] [2023-12-02 17:02:48,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:02:48,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:02:48,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:02:48,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:02:48,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:02:48,945 INFO L87 Difference]: Start difference. First operand 15618 states and 62048 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:50,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:02:50,724 INFO L93 Difference]: Finished difference Result 32605 states and 123072 transitions. [2023-12-02 17:02:50,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:02:50,724 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:02:50,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:02:50,815 INFO L225 Difference]: With dead ends: 32605 [2023-12-02 17:02:50,815 INFO L226 Difference]: Without dead ends: 32367 [2023-12-02 17:02:50,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:02:50,816 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 460 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:02:50,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 975 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:02:50,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32367 states. [2023-12-02 17:02:51,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32367 to 15516. [2023-12-02 17:02:51,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15516 states, 15515 states have (on average 3.9816951337415403) internal successors, (61776), 15515 states have internal predecessors, (61776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:51,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15516 states to 15516 states and 61776 transitions. [2023-12-02 17:02:51,279 INFO L78 Accepts]: Start accepts. Automaton has 15516 states and 61776 transitions. Word has length 58 [2023-12-02 17:02:51,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:02:51,279 INFO L495 AbstractCegarLoop]: Abstraction has 15516 states and 61776 transitions. [2023-12-02 17:02:51,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:51,279 INFO L276 IsEmpty]: Start isEmpty. Operand 15516 states and 61776 transitions. [2023-12-02 17:02:51,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:02:51,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:02:51,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:02:51,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2023-12-02 17:02:51,305 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:02:51,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:02:51,306 INFO L85 PathProgramCache]: Analyzing trace with hash -525142936, now seen corresponding path program 213 times [2023-12-02 17:02:51,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:02:51,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792364180] [2023-12-02 17:02:51,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:02:51,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:02:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:02:52,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:02:52,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:02:52,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792364180] [2023-12-02 17:02:52,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792364180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:02:52,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:02:52,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:02:52,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317010729] [2023-12-02 17:02:52,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:02:52,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:02:52,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:02:52,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:02:52,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:02:52,665 INFO L87 Difference]: Start difference. First operand 15516 states and 61776 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:54,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:02:54,516 INFO L93 Difference]: Finished difference Result 32155 states and 121701 transitions. [2023-12-02 17:02:54,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:02:54,517 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:02:54,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:02:54,603 INFO L225 Difference]: With dead ends: 32155 [2023-12-02 17:02:54,603 INFO L226 Difference]: Without dead ends: 32022 [2023-12-02 17:02:54,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:02:54,604 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 512 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:02:54,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 972 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 17:02:54,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32022 states. [2023-12-02 17:02:55,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32022 to 15582. [2023-12-02 17:02:55,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15582 states, 15581 states have (on average 3.9801681535203133) internal successors, (62015), 15581 states have internal predecessors, (62015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:55,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15582 states to 15582 states and 62015 transitions. [2023-12-02 17:02:55,085 INFO L78 Accepts]: Start accepts. Automaton has 15582 states and 62015 transitions. Word has length 58 [2023-12-02 17:02:55,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:02:55,086 INFO L495 AbstractCegarLoop]: Abstraction has 15582 states and 62015 transitions. [2023-12-02 17:02:55,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:55,086 INFO L276 IsEmpty]: Start isEmpty. Operand 15582 states and 62015 transitions. [2023-12-02 17:02:55,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:02:55,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:02:55,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:02:55,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2023-12-02 17:02:55,112 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:02:55,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:02:55,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1545219656, now seen corresponding path program 214 times [2023-12-02 17:02:55,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:02:55,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374313584] [2023-12-02 17:02:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:02:55,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:02:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:02:56,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:02:56,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:02:56,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374313584] [2023-12-02 17:02:56,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374313584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:02:56,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:02:56,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:02:56,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422842454] [2023-12-02 17:02:56,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:02:56,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:02:56,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:02:56,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:02:56,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:02:56,392 INFO L87 Difference]: Start difference. First operand 15582 states and 62015 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:58,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:02:58,108 INFO L93 Difference]: Finished difference Result 32020 states and 121338 transitions. [2023-12-02 17:02:58,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:02:58,109 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:02:58,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:02:58,197 INFO L225 Difference]: With dead ends: 32020 [2023-12-02 17:02:58,197 INFO L226 Difference]: Without dead ends: 31893 [2023-12-02 17:02:58,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:02:58,197 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 445 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:02:58,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 986 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:02:58,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31893 states. [2023-12-02 17:02:58,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31893 to 15570. [2023-12-02 17:02:58,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15570 states, 15569 states have (on average 3.9804097886826386) internal successors, (61971), 15569 states have internal predecessors, (61971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:58,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15570 states to 15570 states and 61971 transitions. [2023-12-02 17:02:58,688 INFO L78 Accepts]: Start accepts. Automaton has 15570 states and 61971 transitions. Word has length 58 [2023-12-02 17:02:58,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:02:58,688 INFO L495 AbstractCegarLoop]: Abstraction has 15570 states and 61971 transitions. [2023-12-02 17:02:58,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:02:58,689 INFO L276 IsEmpty]: Start isEmpty. Operand 15570 states and 61971 transitions. [2023-12-02 17:02:58,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:02:58,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:02:58,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:02:58,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2023-12-02 17:02:58,715 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:02:58,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:02:58,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1581970026, now seen corresponding path program 215 times [2023-12-02 17:02:58,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:02:58,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579400267] [2023-12-02 17:02:58,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:02:58,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:02:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:03:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:03:00,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:03:00,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579400267] [2023-12-02 17:03:00,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579400267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:03:00,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:03:00,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:03:00,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730497069] [2023-12-02 17:03:00,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:03:00,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:03:00,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:03:00,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:03:00,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:03:00,022 INFO L87 Difference]: Start difference. First operand 15570 states and 61971 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:03:01,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:03:01,909 INFO L93 Difference]: Finished difference Result 32152 states and 121726 transitions. [2023-12-02 17:03:01,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:03:01,910 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:03:01,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:03:02,002 INFO L225 Difference]: With dead ends: 32152 [2023-12-02 17:03:02,002 INFO L226 Difference]: Without dead ends: 31857 [2023-12-02 17:03:02,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:03:02,002 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 481 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:03:02,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 955 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 17:03:02,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31857 states. [2023-12-02 17:03:02,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31857 to 15534. [2023-12-02 17:03:02,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15534 states, 15533 states have (on average 3.9807506598854054) internal successors, (61833), 15533 states have internal predecessors, (61833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:03:02,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15534 states to 15534 states and 61833 transitions. [2023-12-02 17:03:02,462 INFO L78 Accepts]: Start accepts. Automaton has 15534 states and 61833 transitions. Word has length 58 [2023-12-02 17:03:02,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:03:02,462 INFO L495 AbstractCegarLoop]: Abstraction has 15534 states and 61833 transitions. [2023-12-02 17:03:02,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:03:02,463 INFO L276 IsEmpty]: Start isEmpty. Operand 15534 states and 61833 transitions. [2023-12-02 17:03:02,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:03:02,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:03:02,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:03:02,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2023-12-02 17:03:02,489 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:03:02,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:03:02,489 INFO L85 PathProgramCache]: Analyzing trace with hash 360633770, now seen corresponding path program 216 times [2023-12-02 17:03:02,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:03:02,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543216864] [2023-12-02 17:03:02,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:03:02,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:03:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:03:03,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:03:03,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:03:03,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543216864] [2023-12-02 17:03:03,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543216864] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:03:03,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:03:03,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:03:03,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969117432] [2023-12-02 17:03:03,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:03:03,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:03:03,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:03:03,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:03:03,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:03:03,850 INFO L87 Difference]: Start difference. First operand 15534 states and 61833 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:03:05,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:03:05,546 INFO L93 Difference]: Finished difference Result 32065 states and 121416 transitions. [2023-12-02 17:03:05,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:03:05,546 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 17:03:05,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:03:05,636 INFO L225 Difference]: With dead ends: 32065 [2023-12-02 17:03:05,636 INFO L226 Difference]: Without dead ends: 31932 [2023-12-02 17:03:05,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:03:05,637 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 472 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:03:05,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 1014 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1487 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:03:05,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31932 states. [2023-12-02 17:03:06,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31932 to 15552. [2023-12-02 17:03:06,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15552 states, 15551 states have (on average 3.979808372451932) internal successors, (61890), 15551 states have internal predecessors, (61890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:03:06,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15552 states to 15552 states and 61890 transitions. [2023-12-02 17:03:06,109 INFO L78 Accepts]: Start accepts. Automaton has 15552 states and 61890 transitions. Word has length 58 [2023-12-02 17:03:06,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:03:06,109 INFO L495 AbstractCegarLoop]: Abstraction has 15552 states and 61890 transitions. [2023-12-02 17:03:06,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:03:06,109 INFO L276 IsEmpty]: Start isEmpty. Operand 15552 states and 61890 transitions. [2023-12-02 17:03:06,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:03:06,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:03:06,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:03:06,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2023-12-02 17:03:06,136 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-12-02 17:03:06,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:03:06,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1863970934, now seen corresponding path program 217 times [2023-12-02 17:03:06,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:03:06,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051980402] [2023-12-02 17:03:06,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:03:06,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:03:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:03:07,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:03:07,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:03:07,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051980402] [2023-12-02 17:03:07,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051980402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:03:07,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:03:07,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-02 17:03:07,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353226532] [2023-12-02 17:03:07,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:03:07,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:03:07,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:03:07,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:03:07,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:03:07,266 INFO L87 Difference]: Start difference. First operand 15552 states and 61890 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)