./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83298ff2-e672-4b68-b007-73574128fa3c/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83298ff2-e672-4b68-b007-73574128fa3c/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_83298ff2-e672-4b68-b007-73574128fa3c/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83298ff2-e672-4b68-b007-73574128fa3c/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83298ff2-e672-4b68-b007-73574128fa3c/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_83298ff2-e672-4b68-b007-73574128fa3c/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 ef808fc1470b7509ff56eb59d7d443a24f9bd367b94a6fd316176ae1cba1f1f6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:56:23,743 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:56:23,801 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83298ff2-e672-4b68-b007-73574128fa3c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 18:56:23,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:56:23,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:56:23,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:56:23,830 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:56:23,830 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:56:23,831 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:56:23,831 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:56:23,832 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:56:23,832 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:56:23,833 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:56:23,833 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:56:23,834 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:56:23,834 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:56:23,835 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:56:23,835 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:56:23,835 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:56:23,836 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:56:23,836 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:56:23,837 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:56:23,838 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 18:56:23,838 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 18:56:23,839 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:56:23,839 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:56:23,840 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:56:23,840 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:56:23,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:56:23,841 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 18:56:23,841 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 18:56:23,841 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 18:56:23,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:56:23,842 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 18:56:23,842 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 18:56:23,843 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:56:23,843 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:56:23,843 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:56:23,843 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:56:23,843 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:56:23,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:56:23,844 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:56:23,844 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:56:23,844 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:56:23,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:56:23,845 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:56:23,845 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:56:23,845 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:56:23,845 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_83298ff2-e672-4b68-b007-73574128fa3c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83298ff2-e672-4b68-b007-73574128fa3c/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef808fc1470b7509ff56eb59d7d443a24f9bd367b94a6fd316176ae1cba1f1f6 [2023-12-02 18:56:24,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:56:24,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:56:24,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:56:24,062 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:56:24,062 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:56:24,063 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83298ff2-e672-4b68-b007-73574128fa3c/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.i [2023-12-02 18:56:26,822 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:56:27,043 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:56:27,044 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83298ff2-e672-4b68-b007-73574128fa3c/sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.i [2023-12-02 18:56:27,059 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83298ff2-e672-4b68-b007-73574128fa3c/bin/utaipan-verify-nQ1chXbOIh/data/f397703fb/b53f979b16e4480091da79880bb4a9c9/FLAG4357438b2 [2023-12-02 18:56:27,074 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83298ff2-e672-4b68-b007-73574128fa3c/bin/utaipan-verify-nQ1chXbOIh/data/f397703fb/b53f979b16e4480091da79880bb4a9c9 [2023-12-02 18:56:27,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:56:27,078 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:56:27,079 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:56:27,079 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:56:27,084 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:56:27,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:56:27" (1/1) ... [2023-12-02 18:56:27,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3be8b86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:27, skipping insertion in model container [2023-12-02 18:56:27,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:56:27" (1/1) ... [2023-12-02 18:56:27,142 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:56:27,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:56:27,482 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:56:27,544 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:56:27,578 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:56:27,579 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:56:27,586 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:56:27,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:27 WrapperNode [2023-12-02 18:56:27,587 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:56:27,588 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:56:27,588 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:56:27,588 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:56:27,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:27" (1/1) ... [2023-12-02 18:56:27,612 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:27" (1/1) ... [2023-12-02 18:56:27,639 INFO L138 Inliner]: procedures = 177, calls = 86, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 190 [2023-12-02 18:56:27,640 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:56:27,640 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:56:27,640 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:56:27,641 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:56:27,650 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:27" (1/1) ... [2023-12-02 18:56:27,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:27" (1/1) ... [2023-12-02 18:56:27,656 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:27" (1/1) ... [2023-12-02 18:56:27,656 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:27" (1/1) ... [2023-12-02 18:56:27,669 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:27" (1/1) ... [2023-12-02 18:56:27,672 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:27" (1/1) ... [2023-12-02 18:56:27,675 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:27" (1/1) ... [2023-12-02 18:56:27,678 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:27" (1/1) ... [2023-12-02 18:56:27,683 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:56:27,684 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:56:27,684 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:56:27,684 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:56:27,685 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:27" (1/1) ... [2023-12-02 18:56:27,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:56:27,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83298ff2-e672-4b68-b007-73574128fa3c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:56:27,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83298ff2-e672-4b68-b007-73574128fa3c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:56:27,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83298ff2-e672-4b68-b007-73574128fa3c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:56:27,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 18:56:27,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 18:56:27,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-02 18:56:27,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:56:27,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 18:56:27,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 18:56:27,749 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-02 18:56:27,749 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-02 18:56:27,750 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-02 18:56:27,750 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-02 18:56:27,750 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-02 18:56:27,750 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-02 18:56:27,750 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-12-02 18:56:27,750 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-12-02 18:56:27,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:56:27,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-02 18:56:27,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:56:27,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:56:27,752 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 18:56:27,894 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:56:27,896 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:56:28,373 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:56:28,971 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:56:28,971 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 18:56:28,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:56:28 BoogieIcfgContainer [2023-12-02 18:56:28,972 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:56:28,975 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:56:28,975 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:56:28,978 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:56:28,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:56:27" (1/3) ... [2023-12-02 18:56:28,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4c7caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:56:28, skipping insertion in model container [2023-12-02 18:56:28,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:27" (2/3) ... [2023-12-02 18:56:28,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4c7caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:56:28, skipping insertion in model container [2023-12-02 18:56:28,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:56:28" (3/3) ... [2023-12-02 18:56:28,981 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_rmo.oepc.i [2023-12-02 18:56:29,002 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:56:29,002 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 52 error locations. [2023-12-02 18:56:29,002 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 18:56:29,136 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 18:56:29,164 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 115 places, 104 transitions, 224 flow [2023-12-02 18:56:45,640 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 594682 states, 581070 states have (on average 4.745226908978264) internal successors, (2757309), 594681 states have internal predecessors, (2757309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:56:45,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:56:45,673 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;@76f7e254, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:56:45,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2023-12-02 18:56:46,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 594682 states, 581070 states have (on average 4.745226908978264) internal successors, (2757309), 594681 states have internal predecessors, (2757309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:56:46,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 18:56:46,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:56:46,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 18:56:46,467 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-12-02 18:56:46,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:56:46,472 INFO L85 PathProgramCache]: Analyzing trace with hash 27082, now seen corresponding path program 1 times [2023-12-02 18:56:46,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:56:46,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303309692] [2023-12-02 18:56:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:56:46,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:56:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:56:46,705 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 18:56:46,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:56:46,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303309692] [2023-12-02 18:56:46,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303309692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:56:46,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:56:46,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 18:56:46,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246253057] [2023-12-02 18:56:46,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:56:46,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:56:46,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:56:46,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:56:46,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:56:47,590 INFO L87 Difference]: Start difference. First operand has 594682 states, 581070 states have (on average 4.745226908978264) internal successors, (2757309), 594681 states have internal predecessors, (2757309), 0 states have call successors, (0), 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 18:56:51,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:56:51,218 INFO L93 Difference]: Finished difference Result 188887 states and 849350 transitions. [2023-12-02 18:56:51,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:56:51,220 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 18:56:51,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:56:53,060 INFO L225 Difference]: With dead ends: 188887 [2023-12-02 18:56:53,060 INFO L226 Difference]: Without dead ends: 188887 [2023-12-02 18:56:53,061 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 18:56:53,064 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 69 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:56:53,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 34 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:56:53,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188887 states. [2023-12-02 18:56:59,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188887 to 188887. [2023-12-02 18:56:59,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188887 states, 187216 states have (on average 4.536738312964704) internal successors, (849350), 188886 states have internal predecessors, (849350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:57:01,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188887 states to 188887 states and 849350 transitions. [2023-12-02 18:57:01,429 INFO L78 Accepts]: Start accepts. Automaton has 188887 states and 849350 transitions. Word has length 2 [2023-12-02 18:57:01,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:57:01,429 INFO L495 AbstractCegarLoop]: Abstraction has 188887 states and 849350 transitions. [2023-12-02 18:57:01,430 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 18:57:01,430 INFO L276 IsEmpty]: Start isEmpty. Operand 188887 states and 849350 transitions. [2023-12-02 18:57:01,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 18:57:01,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:57:01,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 18:57:01,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 18:57:01,431 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-12-02 18:57:01,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:57:01,432 INFO L85 PathProgramCache]: Analyzing trace with hash 27083, now seen corresponding path program 1 times [2023-12-02 18:57:01,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:57:01,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471533426] [2023-12-02 18:57:01,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:01,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:57:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:57:01,587 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 18:57:01,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:57:01,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471533426] [2023-12-02 18:57:01,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471533426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:57:01,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:57:01,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 18:57:01,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153397735] [2023-12-02 18:57:01,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:57:01,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:57:01,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:57:01,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:57:01,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:57:01,591 INFO L87 Difference]: Start difference. First operand 188887 states and 849350 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 18:57:03,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:57:03,788 INFO L93 Difference]: Finished difference Result 188886 states and 849349 transitions. [2023-12-02 18:57:03,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:57:03,789 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 18:57:03,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:57:05,330 INFO L225 Difference]: With dead ends: 188886 [2023-12-02 18:57:05,330 INFO L226 Difference]: Without dead ends: 188886 [2023-12-02 18:57:05,331 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 18:57:05,332 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 68 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:57:05,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 35 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:57:05,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188886 states. [2023-12-02 18:57:10,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188886 to 188886. [2023-12-02 18:57:10,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188886 states, 187216 states have (on average 4.536732971540894) internal successors, (849349), 188885 states have internal predecessors, (849349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:57:11,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188886 states to 188886 states and 849349 transitions. [2023-12-02 18:57:11,985 INFO L78 Accepts]: Start accepts. Automaton has 188886 states and 849349 transitions. Word has length 2 [2023-12-02 18:57:11,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:57:11,985 INFO L495 AbstractCegarLoop]: Abstraction has 188886 states and 849349 transitions. [2023-12-02 18:57:11,985 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 18:57:11,985 INFO L276 IsEmpty]: Start isEmpty. Operand 188886 states and 849349 transitions. [2023-12-02 18:57:11,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 18:57:11,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:57:11,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 18:57:11,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 18:57:11,986 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-12-02 18:57:11,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:57:11,987 INFO L85 PathProgramCache]: Analyzing trace with hash 807707802, now seen corresponding path program 1 times [2023-12-02 18:57:11,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:57:11,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388609331] [2023-12-02 18:57:11,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:11,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:57:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:57:12,050 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 18:57:12,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:57:12,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388609331] [2023-12-02 18:57:12,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388609331] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:57:12,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:57:12,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:57:12,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030697467] [2023-12-02 18:57:12,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:57:12,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:57:12,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:57:12,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:57:12,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:57:12,053 INFO L87 Difference]: Start difference. First operand 188886 states and 849349 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 18:57:14,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:57:14,434 INFO L93 Difference]: Finished difference Result 188877 states and 849332 transitions. [2023-12-02 18:57:14,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:57:14,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 18:57:14,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:57:15,635 INFO L225 Difference]: With dead ends: 188877 [2023-12-02 18:57:15,635 INFO L226 Difference]: Without dead ends: 188877 [2023-12-02 18:57:15,635 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 18:57:15,637 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 65 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:57:15,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 38 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:57:16,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188877 states. [2023-12-02 18:57:21,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188877 to 188877. [2023-12-02 18:57:21,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188877 states, 187210 states have (on average 4.536787564766839) internal successors, (849332), 188876 states have internal predecessors, (849332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:57:22,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188877 states to 188877 states and 849332 transitions. [2023-12-02 18:57:22,989 INFO L78 Accepts]: Start accepts. Automaton has 188877 states and 849332 transitions. Word has length 5 [2023-12-02 18:57:22,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:57:22,990 INFO L495 AbstractCegarLoop]: Abstraction has 188877 states and 849332 transitions. [2023-12-02 18:57:22,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 18:57:22,990 INFO L276 IsEmpty]: Start isEmpty. Operand 188877 states and 849332 transitions. [2023-12-02 18:57:22,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 18:57:22,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:57:22,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 18:57:22,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 18:57:22,991 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-12-02 18:57:22,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:57:22,991 INFO L85 PathProgramCache]: Analyzing trace with hash 807707803, now seen corresponding path program 1 times [2023-12-02 18:57:22,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:57:22,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487996013] [2023-12-02 18:57:22,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:22,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:57:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:57:23,067 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 18:57:23,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:57:23,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487996013] [2023-12-02 18:57:23,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487996013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:57:23,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:57:23,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:57:23,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633951607] [2023-12-02 18:57:23,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:57:23,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:57:23,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:57:23,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:57:23,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:57:23,069 INFO L87 Difference]: Start difference. First operand 188877 states and 849332 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 18:57:24,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:57:24,905 INFO L93 Difference]: Finished difference Result 188868 states and 849315 transitions. [2023-12-02 18:57:24,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:57:24,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 18:57:24,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:57:26,439 INFO L225 Difference]: With dead ends: 188868 [2023-12-02 18:57:26,439 INFO L226 Difference]: Without dead ends: 188868 [2023-12-02 18:57:26,439 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 18:57:26,440 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 64 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:57:26,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 39 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:57:26,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188868 states. [2023-12-02 18:57:31,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188868 to 188868. [2023-12-02 18:57:32,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188868 states, 187204 states have (on average 4.536842161492276) internal successors, (849315), 188867 states have internal predecessors, (849315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:57:33,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188868 states to 188868 states and 849315 transitions. [2023-12-02 18:57:33,381 INFO L78 Accepts]: Start accepts. Automaton has 188868 states and 849315 transitions. Word has length 5 [2023-12-02 18:57:33,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:57:33,381 INFO L495 AbstractCegarLoop]: Abstraction has 188868 states and 849315 transitions. [2023-12-02 18:57:33,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 18:57:33,382 INFO L276 IsEmpty]: Start isEmpty. Operand 188868 states and 849315 transitions. [2023-12-02 18:57:33,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 18:57:33,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:57:33,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 18:57:33,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 18:57:33,383 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-12-02 18:57:33,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:57:33,383 INFO L85 PathProgramCache]: Analyzing trace with hash 807710861, now seen corresponding path program 1 times [2023-12-02 18:57:33,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:57:33,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840851983] [2023-12-02 18:57:33,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:33,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:57:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:57:33,475 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 18:57:33,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:57:33,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840851983] [2023-12-02 18:57:33,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840851983] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:57:33,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:57:33,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:57:33,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077013470] [2023-12-02 18:57:33,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:57:33,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:57:33,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:57:33,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:57:33,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:57:33,477 INFO L87 Difference]: Start difference. First operand 188868 states and 849315 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 18:57:34,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:57:34,884 INFO L93 Difference]: Finished difference Result 118767 states and 506326 transitions. [2023-12-02 18:57:34,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:57:34,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 18:57:34,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:57:35,460 INFO L225 Difference]: With dead ends: 118767 [2023-12-02 18:57:35,461 INFO L226 Difference]: Without dead ends: 118767 [2023-12-02 18:57:35,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:57:35,462 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 134 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:57:35,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 59 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:57:35,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118767 states. [2023-12-02 18:57:38,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118767 to 109407. [2023-12-02 18:57:38,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109407 states, 108902 states have (on average 4.431360305595857) internal successors, (482584), 109406 states have internal predecessors, (482584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:57:39,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109407 states to 109407 states and 482584 transitions. [2023-12-02 18:57:39,748 INFO L78 Accepts]: Start accepts. Automaton has 109407 states and 482584 transitions. Word has length 5 [2023-12-02 18:57:39,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:57:39,749 INFO L495 AbstractCegarLoop]: Abstraction has 109407 states and 482584 transitions. [2023-12-02 18:57:39,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 18:57:39,749 INFO L276 IsEmpty]: Start isEmpty. Operand 109407 states and 482584 transitions. [2023-12-02 18:57:39,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 18:57:39,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:57:39,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 18:57:39,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 18:57:39,749 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-12-02 18:57:39,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:57:39,750 INFO L85 PathProgramCache]: Analyzing trace with hash 807710862, now seen corresponding path program 1 times [2023-12-02 18:57:39,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:57:39,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829626414] [2023-12-02 18:57:39,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:39,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:57:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:57:39,842 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 18:57:39,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:57:39,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829626414] [2023-12-02 18:57:39,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829626414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:57:39,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:57:39,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:57:39,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893777602] [2023-12-02 18:57:39,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:57:39,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:57:39,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:57:39,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:57:39,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:57:39,844 INFO L87 Difference]: Start difference. First operand 109407 states and 482584 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 18:57:40,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:57:40,229 INFO L93 Difference]: Finished difference Result 44940 states and 187106 transitions. [2023-12-02 18:57:40,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:57:40,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 18:57:40,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:57:40,425 INFO L225 Difference]: With dead ends: 44940 [2023-12-02 18:57:40,425 INFO L226 Difference]: Without dead ends: 43518 [2023-12-02 18:57:40,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:57:40,426 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 120 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:57:40,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 34 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:57:40,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43518 states. [2023-12-02 18:57:41,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43518 to 43518. [2023-12-02 18:57:41,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43518 states, 43448 states have (on average 4.141065181366231) internal successors, (179921), 43517 states have internal predecessors, (179921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:57:41,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43518 states to 43518 states and 179921 transitions. [2023-12-02 18:57:41,868 INFO L78 Accepts]: Start accepts. Automaton has 43518 states and 179921 transitions. Word has length 5 [2023-12-02 18:57:41,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:57:41,868 INFO L495 AbstractCegarLoop]: Abstraction has 43518 states and 179921 transitions. [2023-12-02 18:57:41,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 18:57:41,868 INFO L276 IsEmpty]: Start isEmpty. Operand 43518 states and 179921 transitions. [2023-12-02 18:57:41,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 18:57:41,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:57:41,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:57:41,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 18:57:41,869 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-12-02 18:57:41,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:57:41,869 INFO L85 PathProgramCache]: Analyzing trace with hash 2017251076, now seen corresponding path program 1 times [2023-12-02 18:57:41,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:57:41,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740626124] [2023-12-02 18:57:41,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:41,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:57:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:57:41,911 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 18:57:41,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:57:41,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740626124] [2023-12-02 18:57:41,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740626124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:57:41,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:57:41,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:57:41,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479768965] [2023-12-02 18:57:41,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:57:41,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:57:41,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:57:41,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:57:41,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:57:41,913 INFO L87 Difference]: Start difference. First operand 43518 states and 179921 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 18:57:42,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:57:42,607 INFO L93 Difference]: Finished difference Result 43476 states and 179808 transitions. [2023-12-02 18:57:42,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:57:42,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 18:57:42,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:57:42,795 INFO L225 Difference]: With dead ends: 43476 [2023-12-02 18:57:42,795 INFO L226 Difference]: Without dead ends: 43476 [2023-12-02 18:57:42,796 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 18:57:42,796 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 41 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:57:42,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 42 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:57:42,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43476 states. [2023-12-02 18:57:43,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43476 to 43476. [2023-12-02 18:57:43,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43476 states, 43407 states have (on average 4.142373349920519) internal successors, (179808), 43475 states have internal predecessors, (179808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:57:44,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43476 states to 43476 states and 179808 transitions. [2023-12-02 18:57:44,173 INFO L78 Accepts]: Start accepts. Automaton has 43476 states and 179808 transitions. Word has length 8 [2023-12-02 18:57:44,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:57:44,173 INFO L495 AbstractCegarLoop]: Abstraction has 43476 states and 179808 transitions. [2023-12-02 18:57:44,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 18:57:44,174 INFO L276 IsEmpty]: Start isEmpty. Operand 43476 states and 179808 transitions. [2023-12-02 18:57:44,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 18:57:44,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:57:44,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:57:44,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 18:57:44,174 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-12-02 18:57:44,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:57:44,174 INFO L85 PathProgramCache]: Analyzing trace with hash 2017251077, now seen corresponding path program 1 times [2023-12-02 18:57:44,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:57:44,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131276025] [2023-12-02 18:57:44,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:44,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:57:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:57:44,235 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 18:57:44,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:57:44,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131276025] [2023-12-02 18:57:44,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131276025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:57:44,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:57:44,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:57:44,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602103002] [2023-12-02 18:57:44,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:57:44,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:57:44,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:57:44,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:57:44,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:57:44,237 INFO L87 Difference]: Start difference. First operand 43476 states and 179808 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 18:57:44,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:57:44,544 INFO L93 Difference]: Finished difference Result 43434 states and 179695 transitions. [2023-12-02 18:57:44,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:57:44,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 18:57:44,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:57:44,703 INFO L225 Difference]: With dead ends: 43434 [2023-12-02 18:57:44,704 INFO L226 Difference]: Without dead ends: 43434 [2023-12-02 18:57:44,704 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 18:57:44,704 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 40 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:57:44,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 43 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:57:44,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43434 states. [2023-12-02 18:57:45,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43434 to 43434. [2023-12-02 18:57:45,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43434 states, 43366 states have (on average 4.143683992067518) internal successors, (179695), 43433 states have internal predecessors, (179695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:57:45,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43434 states to 43434 states and 179695 transitions. [2023-12-02 18:57:45,957 INFO L78 Accepts]: Start accepts. Automaton has 43434 states and 179695 transitions. Word has length 8 [2023-12-02 18:57:45,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:57:45,958 INFO L495 AbstractCegarLoop]: Abstraction has 43434 states and 179695 transitions. [2023-12-02 18:57:45,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 18:57:45,958 INFO L276 IsEmpty]: Start isEmpty. Operand 43434 states and 179695 transitions. [2023-12-02 18:57:45,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 18:57:45,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:57:45,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:57:45,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 18:57:45,959 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-12-02 18:57:45,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:57:45,960 INFO L85 PathProgramCache]: Analyzing trace with hash 745311103, now seen corresponding path program 1 times [2023-12-02 18:57:45,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:57:45,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490944658] [2023-12-02 18:57:45,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:45,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:57:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:57:46,009 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 18:57:46,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:57:46,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490944658] [2023-12-02 18:57:46,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490944658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:57:46,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:57:46,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:57:46,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438961060] [2023-12-02 18:57:46,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:57:46,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:57:46,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:57:46,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:57:46,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:57:46,012 INFO L87 Difference]: Start difference. First operand 43434 states and 179695 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 18:57:46,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:57:46,335 INFO L93 Difference]: Finished difference Result 43140 states and 178652 transitions. [2023-12-02 18:57:46,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:57:46,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 18:57:46,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:57:46,480 INFO L225 Difference]: With dead ends: 43140 [2023-12-02 18:57:46,480 INFO L226 Difference]: Without dead ends: 43140 [2023-12-02 18:57:46,481 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 18:57:46,481 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 37 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:57:46,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 45 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:57:46,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43140 states. [2023-12-02 18:57:47,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43140 to 43140. [2023-12-02 18:57:47,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43140 states, 43073 states have (on average 4.147656304413438) internal successors, (178652), 43139 states have internal predecessors, (178652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:57:47,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43140 states to 43140 states and 178652 transitions. [2023-12-02 18:57:47,751 INFO L78 Accepts]: Start accepts. Automaton has 43140 states and 178652 transitions. Word has length 11 [2023-12-02 18:57:47,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:57:47,752 INFO L495 AbstractCegarLoop]: Abstraction has 43140 states and 178652 transitions. [2023-12-02 18:57:47,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 18:57:47,752 INFO L276 IsEmpty]: Start isEmpty. Operand 43140 states and 178652 transitions. [2023-12-02 18:57:47,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 18:57:47,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:57:47,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:57:47,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 18:57:47,753 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-12-02 18:57:47,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:57:47,753 INFO L85 PathProgramCache]: Analyzing trace with hash 745311104, now seen corresponding path program 1 times [2023-12-02 18:57:47,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:57:47,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869672368] [2023-12-02 18:57:47,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:47,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:57:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:57:47,826 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 18:57:47,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:57:47,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869672368] [2023-12-02 18:57:47,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869672368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:57:47,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:57:47,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:57:47,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687681590] [2023-12-02 18:57:47,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:57:47,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:57:47,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:57:47,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:57:47,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:57:47,828 INFO L87 Difference]: Start difference. First operand 43140 states and 178652 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 18:57:48,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:57:48,530 INFO L93 Difference]: Finished difference Result 42846 states and 177609 transitions. [2023-12-02 18:57:48,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:57:48,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 18:57:48,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:57:48,672 INFO L225 Difference]: With dead ends: 42846 [2023-12-02 18:57:48,672 INFO L226 Difference]: Without dead ends: 42846 [2023-12-02 18:57:48,673 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 18:57:48,673 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 36 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:57:48,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 46 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:57:48,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42846 states. [2023-12-02 18:57:49,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42846 to 42846. [2023-12-02 18:57:49,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42846 states, 42780 states have (on average 4.151683029453015) internal successors, (177609), 42845 states have internal predecessors, (177609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:57:49,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42846 states to 42846 states and 177609 transitions. [2023-12-02 18:57:49,991 INFO L78 Accepts]: Start accepts. Automaton has 42846 states and 177609 transitions. Word has length 11 [2023-12-02 18:57:49,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:57:49,991 INFO L495 AbstractCegarLoop]: Abstraction has 42846 states and 177609 transitions. [2023-12-02 18:57:49,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 18:57:49,991 INFO L276 IsEmpty]: Start isEmpty. Operand 42846 states and 177609 transitions. [2023-12-02 18:57:49,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 18:57:49,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:57:49,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:57:49,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 18:57:49,997 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-12-02 18:57:49,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:57:49,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1261801956, now seen corresponding path program 1 times [2023-12-02 18:57:49,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:57:49,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996672413] [2023-12-02 18:57:49,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:49,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:57:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:57:50,134 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 18:57:50,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:57:50,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996672413] [2023-12-02 18:57:50,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996672413] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:57:50,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:57:50,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 18:57:50,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208283872] [2023-12-02 18:57:50,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:57:50,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:57:50,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:57:50,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:57:50,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:57:50,135 INFO L87 Difference]: Start difference. First operand 42846 states and 177609 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:57:50,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:57:50,455 INFO L93 Difference]: Finished difference Result 41838 states and 173049 transitions. [2023-12-02 18:57:50,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:57:50,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-02 18:57:50,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:57:50,602 INFO L225 Difference]: With dead ends: 41838 [2023-12-02 18:57:50,602 INFO L226 Difference]: Without dead ends: 41838 [2023-12-02 18:57:50,602 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 18:57:50,603 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 33 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:57:50,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 42 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:57:50,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41838 states. [2023-12-02 18:57:51,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41838 to 41838. [2023-12-02 18:57:51,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41838 states, 41772 states have (on average 4.142703246193623) internal successors, (173049), 41837 states have internal predecessors, (173049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:57:51,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41838 states to 41838 states and 173049 transitions. [2023-12-02 18:57:51,825 INFO L78 Accepts]: Start accepts. Automaton has 41838 states and 173049 transitions. Word has length 17 [2023-12-02 18:57:51,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:57:51,825 INFO L495 AbstractCegarLoop]: Abstraction has 41838 states and 173049 transitions. [2023-12-02 18:57:51,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:57:51,825 INFO L276 IsEmpty]: Start isEmpty. Operand 41838 states and 173049 transitions. [2023-12-02 18:57:51,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 18:57:51,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:57:51,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:57:51,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 18:57:51,829 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-12-02 18:57:51,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:57:51,830 INFO L85 PathProgramCache]: Analyzing trace with hash 881332457, now seen corresponding path program 1 times [2023-12-02 18:57:51,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:57:51,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426443324] [2023-12-02 18:57:51,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:51,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:57:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:57:51,956 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 18:57:51,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:57:51,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426443324] [2023-12-02 18:57:51,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426443324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:57:51,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:57:51,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:57:51,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871725466] [2023-12-02 18:57:51,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:57:51,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:57:51,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:57:51,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:57:51,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:57:51,958 INFO L87 Difference]: Start difference. First operand 41838 states and 173049 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:57:52,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:57:52,380 INFO L93 Difference]: Finished difference Result 43548 states and 176142 transitions. [2023-12-02 18:57:52,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:57:52,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-02 18:57:52,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:57:52,531 INFO L225 Difference]: With dead ends: 43548 [2023-12-02 18:57:52,531 INFO L226 Difference]: Without dead ends: 43548 [2023-12-02 18:57:52,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:57:52,532 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 103 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:57:52,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 95 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:57:52,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43548 states. [2023-12-02 18:57:53,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43548 to 40578. [2023-12-02 18:57:53,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40578 states, 40513 states have (on average 4.136968380519833) internal successors, (167601), 40577 states have internal predecessors, (167601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:57:53,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40578 states to 40578 states and 167601 transitions. [2023-12-02 18:57:53,810 INFO L78 Accepts]: Start accepts. Automaton has 40578 states and 167601 transitions. Word has length 19 [2023-12-02 18:57:53,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:57:53,811 INFO L495 AbstractCegarLoop]: Abstraction has 40578 states and 167601 transitions. [2023-12-02 18:57:53,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:57:53,811 INFO L276 IsEmpty]: Start isEmpty. Operand 40578 states and 167601 transitions. [2023-12-02 18:57:53,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 18:57:53,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:57:53,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:57:53,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 18:57:53,815 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-12-02 18:57:53,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:57:53,815 INFO L85 PathProgramCache]: Analyzing trace with hash 881332458, now seen corresponding path program 1 times [2023-12-02 18:57:53,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:57:53,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751356731] [2023-12-02 18:57:53,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:53,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:57:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:57:54,080 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 18:57:54,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:57:54,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751356731] [2023-12-02 18:57:54,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751356731] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:57:54,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:57:54,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:57:54,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666813141] [2023-12-02 18:57:54,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:57:54,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:57:54,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:57:54,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:57:54,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:57:54,082 INFO L87 Difference]: Start difference. First operand 40578 states and 167601 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:57:54,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:57:54,737 INFO L93 Difference]: Finished difference Result 39318 states and 162153 transitions. [2023-12-02 18:57:54,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:57:54,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-02 18:57:54,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:57:54,880 INFO L225 Difference]: With dead ends: 39318 [2023-12-02 18:57:54,880 INFO L226 Difference]: Without dead ends: 39318 [2023-12-02 18:57:54,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:57:54,881 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 131 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:57:54,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 66 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:57:54,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39318 states. [2023-12-02 18:57:55,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39318 to 39318. [2023-12-02 18:57:55,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39318 states, 39254 states have (on average 4.130865644265553) internal successors, (162153), 39317 states have internal predecessors, (162153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:57:56,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39318 states to 39318 states and 162153 transitions. [2023-12-02 18:57:56,106 INFO L78 Accepts]: Start accepts. Automaton has 39318 states and 162153 transitions. Word has length 19 [2023-12-02 18:57:56,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:57:56,107 INFO L495 AbstractCegarLoop]: Abstraction has 39318 states and 162153 transitions. [2023-12-02 18:57:56,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:57:56,107 INFO L276 IsEmpty]: Start isEmpty. Operand 39318 states and 162153 transitions. [2023-12-02 18:57:56,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 18:57:56,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:57:56,115 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] [2023-12-02 18:57:56,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 18:57:56,116 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-12-02 18:57:56,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:57:56,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1367461064, now seen corresponding path program 1 times [2023-12-02 18:57:56,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:57:56,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108255370] [2023-12-02 18:57:56,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:56,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:57:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:57:56,730 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 18:57:56,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:57:56,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108255370] [2023-12-02 18:57:56,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108255370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:57:56,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:57:56,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 18:57:56,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989583564] [2023-12-02 18:57:56,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:57:56,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 18:57:56,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:57:56,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 18:57:56,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-02 18:57:56,732 INFO L87 Difference]: Start difference. First operand 39318 states and 162153 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:57:57,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:57:57,168 INFO L93 Difference]: Finished difference Result 32460 states and 132414 transitions. [2023-12-02 18:57:57,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:57:57,169 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-02 18:57:57,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:57:57,275 INFO L225 Difference]: With dead ends: 32460 [2023-12-02 18:57:57,275 INFO L226 Difference]: Without dead ends: 30498 [2023-12-02 18:57:57,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-02 18:57:57,276 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 123 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:57:57,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 265 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:57:57,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30498 states.