./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe035_power.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_666f91d7-7f28-4559-97f9-125ef34440d9/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_666f91d7-7f28-4559-97f9-125ef34440d9/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_666f91d7-7f28-4559-97f9-125ef34440d9/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_666f91d7-7f28-4559-97f9-125ef34440d9/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe035_power.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_666f91d7-7f28-4559-97f9-125ef34440d9/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_666f91d7-7f28-4559-97f9-125ef34440d9/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 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 20:02:59,384 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 20:02:59,452 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_666f91d7-7f28-4559-97f9-125ef34440d9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 20:02:59,456 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 20:02:59,457 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 20:02:59,481 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 20:02:59,482 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 20:02:59,483 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 20:02:59,483 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 20:02:59,484 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 20:02:59,484 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 20:02:59,485 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 20:02:59,485 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 20:02:59,486 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 20:02:59,486 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 20:02:59,487 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 20:02:59,487 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 20:02:59,488 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 20:02:59,488 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 20:02:59,489 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 20:02:59,489 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 20:02:59,490 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 20:02:59,491 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 20:02:59,491 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 20:02:59,492 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 20:02:59,492 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 20:02:59,493 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 20:02:59,493 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 20:02:59,494 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 20:02:59,494 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 20:02:59,495 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 20:02:59,495 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 20:02:59,495 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 20:02:59,496 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 20:02:59,496 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 20:02:59,497 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 20:02:59,497 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 20:02:59,498 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 20:02:59,498 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 20:02:59,498 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 20:02:59,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 20:02:59,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 20:02:59,505 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 20:02:59,505 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 20:02:59,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 20:02:59,505 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 20:02:59,506 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 20:02:59,506 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 20:02:59,506 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_666f91d7-7f28-4559-97f9-125ef34440d9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_666f91d7-7f28-4559-97f9-125ef34440d9/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 [2023-12-02 20:02:59,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 20:02:59,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 20:02:59,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 20:02:59,750 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 20:02:59,750 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 20:02:59,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_666f91d7-7f28-4559-97f9-125ef34440d9/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/pthread-wmm/safe035_power.i [2023-12-02 20:03:02,495 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 20:03:02,721 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 20:03:02,722 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_666f91d7-7f28-4559-97f9-125ef34440d9/sv-benchmarks/c/pthread-wmm/safe035_power.i [2023-12-02 20:03:02,738 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_666f91d7-7f28-4559-97f9-125ef34440d9/bin/utaipan-verify-nQ1chXbOIh/data/77bdf3d4d/b6ab5699fa964f8c83ced45c6fd255a2/FLAG63a92b9dd [2023-12-02 20:03:02,752 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_666f91d7-7f28-4559-97f9-125ef34440d9/bin/utaipan-verify-nQ1chXbOIh/data/77bdf3d4d/b6ab5699fa964f8c83ced45c6fd255a2 [2023-12-02 20:03:02,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 20:03:02,756 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 20:03:02,758 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 20:03:02,758 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 20:03:02,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 20:03:02,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:03:02" (1/1) ... [2023-12-02 20:03:02,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72400b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:02, skipping insertion in model container [2023-12-02 20:03:02,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:03:02" (1/1) ... [2023-12-02 20:03:02,834 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 20:03:03,222 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 20:03:03,233 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 20:03:03,294 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 20:03:03,350 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 20:03:03,350 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 20:03:03,356 INFO L206 MainTranslator]: Completed translation [2023-12-02 20:03:03,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:03 WrapperNode [2023-12-02 20:03:03,368 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 20:03:03,369 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 20:03:03,369 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 20:03:03,369 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 20:03:03,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:03" (1/1) ... [2023-12-02 20:03:03,394 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:03" (1/1) ... [2023-12-02 20:03:03,423 INFO L138 Inliner]: procedures = 176, calls = 61, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 178 [2023-12-02 20:03:03,423 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 20:03:03,424 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 20:03:03,424 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 20:03:03,424 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 20:03:03,432 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:03" (1/1) ... [2023-12-02 20:03:03,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:03" (1/1) ... [2023-12-02 20:03:03,436 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:03" (1/1) ... [2023-12-02 20:03:03,437 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:03" (1/1) ... [2023-12-02 20:03:03,450 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:03" (1/1) ... [2023-12-02 20:03:03,452 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:03" (1/1) ... [2023-12-02 20:03:03,455 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:03" (1/1) ... [2023-12-02 20:03:03,458 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:03" (1/1) ... [2023-12-02 20:03:03,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 20:03:03,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 20:03:03,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 20:03:03,464 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 20:03:03,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:03" (1/1) ... [2023-12-02 20:03:03,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 20:03:03,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_666f91d7-7f28-4559-97f9-125ef34440d9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 20:03:03,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_666f91d7-7f28-4559-97f9-125ef34440d9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 20:03:03,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_666f91d7-7f28-4559-97f9-125ef34440d9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 20:03:03,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 20:03:03,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-02 20:03:03,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 20:03:03,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 20:03:03,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 20:03:03,535 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-02 20:03:03,535 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-02 20:03:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-02 20:03:03,536 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-02 20:03:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-02 20:03:03,536 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-02 20:03:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 20:03:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-02 20:03:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 20:03:03,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 20:03:03,538 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 20:03:03,675 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 20:03:03,677 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 20:03:04,054 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 20:03:04,309 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 20:03:04,309 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 20:03:04,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:03:04 BoogieIcfgContainer [2023-12-02 20:03:04,310 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 20:03:04,313 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 20:03:04,313 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 20:03:04,317 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 20:03:04,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:03:02" (1/3) ... [2023-12-02 20:03:04,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da74479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:03:04, skipping insertion in model container [2023-12-02 20:03:04,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:03" (2/3) ... [2023-12-02 20:03:04,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da74479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:03:04, skipping insertion in model container [2023-12-02 20:03:04,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:03:04" (3/3) ... [2023-12-02 20:03:04,320 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2023-12-02 20:03:04,340 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 20:03:04,340 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-12-02 20:03:04,341 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 20:03:04,399 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 20:03:04,427 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 64 places, 56 transitions, 124 flow [2023-12-02 20:03:04,880 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8621 states, 8610 states have (on average 3.6627177700348432) internal successors, (31536), 8620 states have internal predecessors, (31536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:04,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 20:03:04,906 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;@501ba45d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:03:04,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-12-02 20:03:04,943 INFO L276 IsEmpty]: Start isEmpty. Operand has 8621 states, 8610 states have (on average 3.6627177700348432) internal successors, (31536), 8620 states have internal predecessors, (31536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:04,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 20:03:04,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:03:04,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 20:03:04,950 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 20:03:04,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:03:04,956 INFO L85 PathProgramCache]: Analyzing trace with hash 15672, now seen corresponding path program 1 times [2023-12-02 20:03:04,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:03:04,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857391986] [2023-12-02 20:03:04,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:03:04,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:03:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:03:05,222 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 20:03:05,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:03:05,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857391986] [2023-12-02 20:03:05,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857391986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:03:05,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:03:05,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 20:03:05,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430190929] [2023-12-02 20:03:05,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:03:05,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:03:05,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:03:05,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:03:05,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:03:05,282 INFO L87 Difference]: Start difference. First operand has 8621 states, 8610 states have (on average 3.6627177700348432) internal successors, (31536), 8620 states have internal predecessors, (31536), 0 states have call successors, (0), 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 20:03:05,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:03:05,576 INFO L93 Difference]: Finished difference Result 8044 states and 28287 transitions. [2023-12-02 20:03:05,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:03:05,578 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 20:03:05,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:03:05,662 INFO L225 Difference]: With dead ends: 8044 [2023-12-02 20:03:05,662 INFO L226 Difference]: Without dead ends: 8044 [2023-12-02 20:03:05,663 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 20:03:05,666 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 43 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 20:03:05,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 25 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 20:03:05,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8044 states. [2023-12-02 20:03:06,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8044 to 8044. [2023-12-02 20:03:06,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8044 states, 8034 states have (on average 3.5209111277072442) internal successors, (28287), 8043 states have internal predecessors, (28287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:06,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8044 states to 8044 states and 28287 transitions. [2023-12-02 20:03:06,106 INFO L78 Accepts]: Start accepts. Automaton has 8044 states and 28287 transitions. Word has length 2 [2023-12-02 20:03:06,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:03:06,106 INFO L495 AbstractCegarLoop]: Abstraction has 8044 states and 28287 transitions. [2023-12-02 20:03:06,107 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 20:03:06,107 INFO L276 IsEmpty]: Start isEmpty. Operand 8044 states and 28287 transitions. [2023-12-02 20:03:06,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 20:03:06,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:03:06,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 20:03:06,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 20:03:06,108 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 20:03:06,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:03:06,109 INFO L85 PathProgramCache]: Analyzing trace with hash 15673, now seen corresponding path program 1 times [2023-12-02 20:03:06,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:03:06,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500214347] [2023-12-02 20:03:06,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:03:06,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:03:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:03:06,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:03:06,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:03:06,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500214347] [2023-12-02 20:03:06,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500214347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:03:06,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:03:06,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 20:03:06,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291669129] [2023-12-02 20:03:06,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:03:06,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:03:06,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:03:06,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:03:06,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:03:06,221 INFO L87 Difference]: Start difference. First operand 8044 states and 28287 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 20:03:06,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:03:06,461 INFO L93 Difference]: Finished difference Result 8043 states and 28286 transitions. [2023-12-02 20:03:06,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:03:06,462 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 20:03:06,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:03:06,539 INFO L225 Difference]: With dead ends: 8043 [2023-12-02 20:03:06,539 INFO L226 Difference]: Without dead ends: 8043 [2023-12-02 20:03:06,539 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 20:03:06,541 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 20:03:06,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 36 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 20:03:06,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8043 states. [2023-12-02 20:03:06,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8043 to 8043. [2023-12-02 20:03:06,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8043 states, 8034 states have (on average 3.520786656708987) internal successors, (28286), 8042 states have internal predecessors, (28286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:06,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8043 states to 8043 states and 28286 transitions. [2023-12-02 20:03:06,923 INFO L78 Accepts]: Start accepts. Automaton has 8043 states and 28286 transitions. Word has length 2 [2023-12-02 20:03:06,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:03:06,924 INFO L495 AbstractCegarLoop]: Abstraction has 8043 states and 28286 transitions. [2023-12-02 20:03:06,924 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 20:03:06,924 INFO L276 IsEmpty]: Start isEmpty. Operand 8043 states and 28286 transitions. [2023-12-02 20:03:06,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 20:03:06,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:03:06,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 20:03:06,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 20:03:06,926 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 20:03:06,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:03:06,927 INFO L85 PathProgramCache]: Analyzing trace with hash 467367821, now seen corresponding path program 1 times [2023-12-02 20:03:06,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:03:06,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330027307] [2023-12-02 20:03:06,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:03:06,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:03:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:03:06,992 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 20:03:06,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:03:06,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330027307] [2023-12-02 20:03:06,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330027307] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:03:06,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:03:06,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 20:03:06,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298097968] [2023-12-02 20:03:06,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:03:06,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:03:06,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:03:06,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:03:06,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:03:06,997 INFO L87 Difference]: Start difference. First operand 8043 states and 28286 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 20:03:07,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:03:07,270 INFO L93 Difference]: Finished difference Result 8035 states and 28271 transitions. [2023-12-02 20:03:07,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:03:07,271 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 20:03:07,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:03:07,314 INFO L225 Difference]: With dead ends: 8035 [2023-12-02 20:03:07,314 INFO L226 Difference]: Without dead ends: 8035 [2023-12-02 20:03:07,315 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 20:03:07,316 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 39 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 20:03:07,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 29 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 20:03:07,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8035 states. [2023-12-02 20:03:07,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8035 to 8035. [2023-12-02 20:03:07,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8035 states, 8027 states have (on average 3.5219882895228602) internal successors, (28271), 8034 states have internal predecessors, (28271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:07,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8035 states to 8035 states and 28271 transitions. [2023-12-02 20:03:07,642 INFO L78 Accepts]: Start accepts. Automaton has 8035 states and 28271 transitions. Word has length 5 [2023-12-02 20:03:07,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:03:07,643 INFO L495 AbstractCegarLoop]: Abstraction has 8035 states and 28271 transitions. [2023-12-02 20:03:07,643 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 20:03:07,643 INFO L276 IsEmpty]: Start isEmpty. Operand 8035 states and 28271 transitions. [2023-12-02 20:03:07,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 20:03:07,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:03:07,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 20:03:07,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 20:03:07,644 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 20:03:07,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:03:07,645 INFO L85 PathProgramCache]: Analyzing trace with hash 467367822, now seen corresponding path program 1 times [2023-12-02 20:03:07,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:03:07,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623047876] [2023-12-02 20:03:07,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:03:07,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:03:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:03:07,716 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 20:03:07,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:03:07,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623047876] [2023-12-02 20:03:07,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623047876] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:03:07,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:03:07,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 20:03:07,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242665674] [2023-12-02 20:03:07,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:03:07,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:03:07,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:03:07,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:03:07,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:03:07,719 INFO L87 Difference]: Start difference. First operand 8035 states and 28271 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 20:03:07,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:03:07,929 INFO L93 Difference]: Finished difference Result 8027 states and 28256 transitions. [2023-12-02 20:03:07,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:03:07,929 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 20:03:07,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:03:07,971 INFO L225 Difference]: With dead ends: 8027 [2023-12-02 20:03:07,972 INFO L226 Difference]: Without dead ends: 8027 [2023-12-02 20:03:07,972 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 20:03:07,973 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 38 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 20:03:07,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 30 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 20:03:08,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8027 states. [2023-12-02 20:03:08,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8027 to 8027. [2023-12-02 20:03:08,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8027 states, 8020 states have (on average 3.5231920199501245) internal successors, (28256), 8026 states have internal predecessors, (28256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:08,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8027 states to 8027 states and 28256 transitions. [2023-12-02 20:03:08,372 INFO L78 Accepts]: Start accepts. Automaton has 8027 states and 28256 transitions. Word has length 5 [2023-12-02 20:03:08,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:03:08,372 INFO L495 AbstractCegarLoop]: Abstraction has 8027 states and 28256 transitions. [2023-12-02 20:03:08,372 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 20:03:08,373 INFO L276 IsEmpty]: Start isEmpty. Operand 8027 states and 28256 transitions. [2023-12-02 20:03:08,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 20:03:08,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:03:08,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 20:03:08,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 20:03:08,374 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 20:03:08,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:03:08,375 INFO L85 PathProgramCache]: Analyzing trace with hash -928737776, now seen corresponding path program 1 times [2023-12-02 20:03:08,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:03:08,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690473559] [2023-12-02 20:03:08,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:03:08,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:03:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:03:08,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:03:08,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:03:08,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690473559] [2023-12-02 20:03:08,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690473559] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:03:08,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:03:08,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 20:03:08,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149799687] [2023-12-02 20:03:08,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:03:08,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:03:08,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:03:08,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:03:08,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:03:08,447 INFO L87 Difference]: Start difference. First operand 8027 states and 28256 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 20:03:08,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:03:08,619 INFO L93 Difference]: Finished difference Result 7963 states and 28080 transitions. [2023-12-02 20:03:08,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:03:08,620 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 20:03:08,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:03:08,660 INFO L225 Difference]: With dead ends: 7963 [2023-12-02 20:03:08,660 INFO L226 Difference]: Without dead ends: 7963 [2023-12-02 20:03:08,660 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 20:03:08,662 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 35 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 20:03:08,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 32 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 20:03:08,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7963 states. [2023-12-02 20:03:08,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7963 to 7963. [2023-12-02 20:03:08,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7963 states, 7957 states have (on average 3.5289682040970214) internal successors, (28080), 7962 states have internal predecessors, (28080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:08,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7963 states to 7963 states and 28080 transitions. [2023-12-02 20:03:08,975 INFO L78 Accepts]: Start accepts. Automaton has 7963 states and 28080 transitions. Word has length 8 [2023-12-02 20:03:08,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:03:08,976 INFO L495 AbstractCegarLoop]: Abstraction has 7963 states and 28080 transitions. [2023-12-02 20:03:08,977 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 20:03:08,977 INFO L276 IsEmpty]: Start isEmpty. Operand 7963 states and 28080 transitions. [2023-12-02 20:03:08,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 20:03:08,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:03:08,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 20:03:08,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 20:03:08,978 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 20:03:08,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:03:08,979 INFO L85 PathProgramCache]: Analyzing trace with hash -928737775, now seen corresponding path program 1 times [2023-12-02 20:03:08,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:03:08,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984080666] [2023-12-02 20:03:08,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:03:08,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:03:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:03:09,053 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 20:03:09,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:03:09,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984080666] [2023-12-02 20:03:09,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984080666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:03:09,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:03:09,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 20:03:09,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706925706] [2023-12-02 20:03:09,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:03:09,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:03:09,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:03:09,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:03:09,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:03:09,056 INFO L87 Difference]: Start difference. First operand 7963 states and 28080 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 20:03:09,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:03:09,202 INFO L93 Difference]: Finished difference Result 7899 states and 27904 transitions. [2023-12-02 20:03:09,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:03:09,203 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 20:03:09,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:03:09,231 INFO L225 Difference]: With dead ends: 7899 [2023-12-02 20:03:09,231 INFO L226 Difference]: Without dead ends: 7899 [2023-12-02 20:03:09,231 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 20:03:09,232 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 34 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 20:03:09,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 33 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 20:03:09,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7899 states. [2023-12-02 20:03:09,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7899 to 7899. [2023-12-02 20:03:09,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7899 states, 7894 states have (on average 3.53483658474791) internal successors, (27904), 7898 states have internal predecessors, (27904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:09,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7899 states to 7899 states and 27904 transitions. [2023-12-02 20:03:09,557 INFO L78 Accepts]: Start accepts. Automaton has 7899 states and 27904 transitions. Word has length 8 [2023-12-02 20:03:09,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:03:09,558 INFO L495 AbstractCegarLoop]: Abstraction has 7899 states and 27904 transitions. [2023-12-02 20:03:09,558 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 20:03:09,558 INFO L276 IsEmpty]: Start isEmpty. Operand 7899 states and 27904 transitions. [2023-12-02 20:03:09,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 20:03:09,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:03:09,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 20:03:09,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 20:03:09,560 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 20:03:09,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:03:09,560 INFO L85 PathProgramCache]: Analyzing trace with hash 152716340, now seen corresponding path program 1 times [2023-12-02 20:03:09,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:03:09,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449932843] [2023-12-02 20:03:09,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:03:09,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:03:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:03:09,661 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 20:03:09,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:03:09,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449932843] [2023-12-02 20:03:09,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449932843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:03:09,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:03:09,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 20:03:09,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045996799] [2023-12-02 20:03:09,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:03:09,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:03:09,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:03:09,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:03:09,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:03:09,663 INFO L87 Difference]: Start difference. First operand 7899 states and 27904 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:09,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:03:09,773 INFO L93 Difference]: Finished difference Result 7003 states and 24608 transitions. [2023-12-02 20:03:09,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:03:09,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-02 20:03:09,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:03:09,798 INFO L225 Difference]: With dead ends: 7003 [2023-12-02 20:03:09,798 INFO L226 Difference]: Without dead ends: 6875 [2023-12-02 20:03:09,798 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 20:03:09,799 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 20:03:09,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 30 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 20:03:09,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6875 states. [2023-12-02 20:03:09,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6875 to 6875. [2023-12-02 20:03:09,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6875 states, 6873 states have (on average 3.5198603230030554) internal successors, (24192), 6874 states have internal predecessors, (24192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:10,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6875 states to 6875 states and 24192 transitions. [2023-12-02 20:03:10,025 INFO L78 Accepts]: Start accepts. Automaton has 6875 states and 24192 transitions. Word has length 11 [2023-12-02 20:03:10,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:03:10,026 INFO L495 AbstractCegarLoop]: Abstraction has 6875 states and 24192 transitions. [2023-12-02 20:03:10,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:10,026 INFO L276 IsEmpty]: Start isEmpty. Operand 6875 states and 24192 transitions. [2023-12-02 20:03:10,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 20:03:10,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:03:10,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 20:03:10,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 20:03:10,033 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 20:03:10,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:03:10,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1459720887, now seen corresponding path program 1 times [2023-12-02 20:03:10,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:03:10,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389152323] [2023-12-02 20:03:10,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:03:10,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:03:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:03:10,599 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 20:03:10,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:03:10,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389152323] [2023-12-02 20:03:10,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389152323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:03:10,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:03:10,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 20:03:10,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321428750] [2023-12-02 20:03:10,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:03:10,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 20:03:10,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:03:10,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 20:03:10,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-02 20:03:10,601 INFO L87 Difference]: Start difference. First operand 6875 states and 24192 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:11,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:03:11,152 INFO L93 Difference]: Finished difference Result 6363 states and 22336 transitions. [2023-12-02 20:03:11,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:03:11,152 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2023-12-02 20:03:11,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:03:11,171 INFO L225 Difference]: With dead ends: 6363 [2023-12-02 20:03:11,172 INFO L226 Difference]: Without dead ends: 5339 [2023-12-02 20:03:11,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-02 20:03:11,172 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 127 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 20:03:11,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 199 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 20:03:11,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5339 states. [2023-12-02 20:03:11,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5339 to 5339. [2023-12-02 20:03:11,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5339 states, 5338 states have (on average 3.488947171225178) internal successors, (18624), 5338 states have internal predecessors, (18624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:11,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5339 states to 5339 states and 18624 transitions. [2023-12-02 20:03:11,376 INFO L78 Accepts]: Start accepts. Automaton has 5339 states and 18624 transitions. Word has length 18 [2023-12-02 20:03:11,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:03:11,376 INFO L495 AbstractCegarLoop]: Abstraction has 5339 states and 18624 transitions. [2023-12-02 20:03:11,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:11,377 INFO L276 IsEmpty]: Start isEmpty. Operand 5339 states and 18624 transitions. [2023-12-02 20:03:11,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 20:03:11,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:03:11,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 20:03:11,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 20:03:11,382 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 20:03:11,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:03:11,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1459722290, now seen corresponding path program 1 times [2023-12-02 20:03:11,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:03:11,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159083940] [2023-12-02 20:03:11,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:03:11,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:03:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:03:11,602 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 20:03:11,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:03:11,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159083940] [2023-12-02 20:03:11,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159083940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:03:11,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:03:11,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 20:03:11,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861610811] [2023-12-02 20:03:11,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:03:11,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 20:03:11,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:03:11,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 20:03:11,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 20:03:11,605 INFO L87 Difference]: Start difference. First operand 5339 states and 18624 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:11,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:03:11,754 INFO L93 Difference]: Finished difference Result 4123 states and 13272 transitions. [2023-12-02 20:03:11,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:03:11,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2023-12-02 20:03:11,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:03:11,765 INFO L225 Difference]: With dead ends: 4123 [2023-12-02 20:03:11,766 INFO L226 Difference]: Without dead ends: 3611 [2023-12-02 20:03:11,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 20:03:11,767 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 71 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 20:03:11,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 32 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 20:03:11,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2023-12-02 20:03:11,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 3611. [2023-12-02 20:03:11,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3611 states, 3610 states have (on average 3.2443213296398894) internal successors, (11712), 3610 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:11,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3611 states to 3611 states and 11712 transitions. [2023-12-02 20:03:11,909 INFO L78 Accepts]: Start accepts. Automaton has 3611 states and 11712 transitions. Word has length 18 [2023-12-02 20:03:11,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:03:11,909 INFO L495 AbstractCegarLoop]: Abstraction has 3611 states and 11712 transitions. [2023-12-02 20:03:11,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:11,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3611 states and 11712 transitions. [2023-12-02 20:03:11,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 20:03:11,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:03:11,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 20:03:11,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 20:03:11,919 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 20:03:11,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:03:11,919 INFO L85 PathProgramCache]: Analyzing trace with hash -579032175, now seen corresponding path program 1 times [2023-12-02 20:03:11,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:03:11,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339596317] [2023-12-02 20:03:11,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:03:11,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:03:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:03:12,224 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 20:03:12,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:03:12,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339596317] [2023-12-02 20:03:12,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339596317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:03:12,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:03:12,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 20:03:12,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988844424] [2023-12-02 20:03:12,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:03:12,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 20:03:12,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:03:12,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 20:03:12,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 20:03:12,227 INFO L87 Difference]: Start difference. First operand 3611 states and 11712 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:12,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:03:12,439 INFO L93 Difference]: Finished difference Result 2179 states and 6576 transitions. [2023-12-02 20:03:12,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:03:12,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-12-02 20:03:12,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:03:12,446 INFO L225 Difference]: With dead ends: 2179 [2023-12-02 20:03:12,446 INFO L226 Difference]: Without dead ends: 1883 [2023-12-02 20:03:12,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 20:03:12,447 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 126 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 20:03:12,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 39 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 20:03:12,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2023-12-02 20:03:12,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1883. [2023-12-02 20:03:12,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1882 states have (on average 3.0095642933049946) internal successors, (5664), 1882 states have internal predecessors, (5664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:12,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 5664 transitions. [2023-12-02 20:03:12,502 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 5664 transitions. Word has length 24 [2023-12-02 20:03:12,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:03:12,503 INFO L495 AbstractCegarLoop]: Abstraction has 1883 states and 5664 transitions. [2023-12-02 20:03:12,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:12,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 5664 transitions. [2023-12-02 20:03:12,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 20:03:12,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:03:12,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 20:03:12,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 20:03:12,511 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 20:03:12,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:03:12,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1244023314, now seen corresponding path program 1 times [2023-12-02 20:03:12,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:03:12,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115826436] [2023-12-02 20:03:12,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:03:12,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:03:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:03:12,938 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 20:03:12,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:03:12,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115826436] [2023-12-02 20:03:12,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115826436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:03:12,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:03:12,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 20:03:12,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80107142] [2023-12-02 20:03:12,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:03:12,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 20:03:12,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:03:12,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 20:03:12,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 20:03:12,940 INFO L87 Difference]: Start difference. First operand 1883 states and 5664 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:13,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:03:13,139 INFO L93 Difference]: Finished difference Result 1387 states and 4164 transitions. [2023-12-02 20:03:13,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:03:13,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2023-12-02 20:03:13,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:03:13,143 INFO L225 Difference]: With dead ends: 1387 [2023-12-02 20:03:13,143 INFO L226 Difference]: Without dead ends: 1307 [2023-12-02 20:03:13,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-02 20:03:13,144 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 142 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 20:03:13,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 32 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 20:03:13,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2023-12-02 20:03:13,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1307. [2023-12-02 20:03:13,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1306 states have (on average 3.013782542113323) internal successors, (3936), 1306 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:13,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 3936 transitions. [2023-12-02 20:03:13,184 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 3936 transitions. Word has length 30 [2023-12-02 20:03:13,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:03:13,185 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 3936 transitions. [2023-12-02 20:03:13,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:13,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 3936 transitions. [2023-12-02 20:03:13,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 20:03:13,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:03:13,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 20:03:13,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 20:03:13,191 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 20:03:13,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:03:13,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1594878028, now seen corresponding path program 1 times [2023-12-02 20:03:13,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:03:13,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390887656] [2023-12-02 20:03:13,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:03:13,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:03:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:03:14,817 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 20:03:14,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:03:14,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390887656] [2023-12-02 20:03:14,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390887656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:03:14,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:03:14,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 20:03:14,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430138635] [2023-12-02 20:03:14,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:03:14,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 20:03:14,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:03:14,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 20:03:14,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-02 20:03:14,819 INFO L87 Difference]: Start difference. First operand 1307 states and 3936 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:15,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:03:15,172 INFO L93 Difference]: Finished difference Result 1803 states and 5358 transitions. [2023-12-02 20:03:15,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 20:03:15,172 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-02 20:03:15,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:03:15,175 INFO L225 Difference]: With dead ends: 1803 [2023-12-02 20:03:15,175 INFO L226 Difference]: Without dead ends: 1307 [2023-12-02 20:03:15,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-02 20:03:15,176 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 61 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 20:03:15,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 132 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 20:03:15,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2023-12-02 20:03:15,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1307. [2023-12-02 20:03:15,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1306 states have (on average 2.9816232771822357) internal successors, (3894), 1306 states have internal predecessors, (3894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:15,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 3894 transitions. [2023-12-02 20:03:15,197 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 3894 transitions. Word has length 36 [2023-12-02 20:03:15,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:03:15,198 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 3894 transitions. [2023-12-02 20:03:15,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:15,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 3894 transitions. [2023-12-02 20:03:15,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 20:03:15,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:03:15,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 20:03:15,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 20:03:15,202 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 20:03:15,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:03:15,203 INFO L85 PathProgramCache]: Analyzing trace with hash 395028388, now seen corresponding path program 2 times [2023-12-02 20:03:15,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:03:15,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485639113] [2023-12-02 20:03:15,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:03:15,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:03:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:03:16,406 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 20:03:16,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:03:16,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485639113] [2023-12-02 20:03:16,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485639113] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:03:16,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:03:16,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 20:03:16,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755426681] [2023-12-02 20:03:16,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:03:16,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 20:03:16,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:03:16,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 20:03:16,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-02 20:03:16,409 INFO L87 Difference]: Start difference. First operand 1307 states and 3894 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:16,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:03:16,917 INFO L93 Difference]: Finished difference Result 1741 states and 5175 transitions. [2023-12-02 20:03:16,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 20:03:16,917 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-02 20:03:16,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:03:16,921 INFO L225 Difference]: With dead ends: 1741 [2023-12-02 20:03:16,921 INFO L226 Difference]: Without dead ends: 1403 [2023-12-02 20:03:16,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-12-02 20:03:16,922 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 67 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 20:03:16,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 186 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 20:03:16,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2023-12-02 20:03:16,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1319. [2023-12-02 20:03:16,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 2.975720789074355) internal successors, (3922), 1318 states have internal predecessors, (3922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:16,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 3922 transitions. [2023-12-02 20:03:16,963 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 3922 transitions. Word has length 36 [2023-12-02 20:03:16,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:03:16,963 INFO L495 AbstractCegarLoop]: Abstraction has 1319 states and 3922 transitions. [2023-12-02 20:03:16,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:16,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 3922 transitions. [2023-12-02 20:03:16,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 20:03:16,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:03:16,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 20:03:16,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 20:03:16,969 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 20:03:16,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:03:16,970 INFO L85 PathProgramCache]: Analyzing trace with hash -2080110760, now seen corresponding path program 3 times [2023-12-02 20:03:16,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:03:16,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782764831] [2023-12-02 20:03:16,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:03:16,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:03:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:03:17,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:03:17,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:03:17,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782764831] [2023-12-02 20:03:17,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782764831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:03:17,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:03:17,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 20:03:17,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267516470] [2023-12-02 20:03:17,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:03:17,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 20:03:17,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:03:17,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 20:03:17,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 20:03:17,825 INFO L87 Difference]: Start difference. First operand 1319 states and 3922 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:18,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:03:18,160 INFO L93 Difference]: Finished difference Result 2019 states and 6050 transitions. [2023-12-02 20:03:18,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 20:03:18,160 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-02 20:03:18,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:03:18,164 INFO L225 Difference]: With dead ends: 2019 [2023-12-02 20:03:18,164 INFO L226 Difference]: Without dead ends: 1639 [2023-12-02 20:03:18,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-02 20:03:18,165 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 39 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 20:03:18,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 191 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 20:03:18,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2023-12-02 20:03:18,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1357. [2023-12-02 20:03:18,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1356 states have (on average 2.963864306784661) internal successors, (4019), 1356 states have internal predecessors, (4019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:18,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 4019 transitions. [2023-12-02 20:03:18,200 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 4019 transitions. Word has length 36 [2023-12-02 20:03:18,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:03:18,201 INFO L495 AbstractCegarLoop]: Abstraction has 1357 states and 4019 transitions. [2023-12-02 20:03:18,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:18,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 4019 transitions. [2023-12-02 20:03:18,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 20:03:18,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:03:18,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 20:03:18,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 20:03:18,205 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 20:03:18,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:03:18,205 INFO L85 PathProgramCache]: Analyzing trace with hash 413998536, now seen corresponding path program 4 times [2023-12-02 20:03:18,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:03:18,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379210292] [2023-12-02 20:03:18,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:03:18,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:03:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:03:19,920 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 20:03:19,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:03:19,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379210292] [2023-12-02 20:03:19,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379210292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:03:19,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:03:19,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-02 20:03:19,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997302067] [2023-12-02 20:03:19,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:03:19,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 20:03:19,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:03:19,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 20:03:19,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-02 20:03:19,923 INFO L87 Difference]: Start difference. First operand 1357 states and 4019 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:20,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:03:20,460 INFO L93 Difference]: Finished difference Result 2453 states and 7247 transitions. [2023-12-02 20:03:20,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 20:03:20,460 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-02 20:03:20,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:03:20,464 INFO L225 Difference]: With dead ends: 2453 [2023-12-02 20:03:20,464 INFO L226 Difference]: Without dead ends: 1714 [2023-12-02 20:03:20,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-12-02 20:03:20,465 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 99 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 20:03:20,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 295 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 20:03:20,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2023-12-02 20:03:20,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1238. [2023-12-02 20:03:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 2.9126919967663705) internal successors, (3603), 1237 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 3603 transitions. [2023-12-02 20:03:20,487 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 3603 transitions. Word has length 36 [2023-12-02 20:03:20,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:03:20,488 INFO L495 AbstractCegarLoop]: Abstraction has 1238 states and 3603 transitions. [2023-12-02 20:03:20,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:20,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 3603 transitions. [2023-12-02 20:03:20,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 20:03:20,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:03:20,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 20:03:20,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 20:03:20,491 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 20:03:20,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:03:20,491 INFO L85 PathProgramCache]: Analyzing trace with hash -390800138, now seen corresponding path program 5 times [2023-12-02 20:03:20,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:03:20,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787761070] [2023-12-02 20:03:20,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:03:20,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:03:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:03:22,186 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 20:03:22,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:03:22,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787761070] [2023-12-02 20:03:22,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787761070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:03:22,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:03:22,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 20:03:22,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017626124] [2023-12-02 20:03:22,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:03:22,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 20:03:22,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:03:22,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 20:03:22,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-02 20:03:22,188 INFO L87 Difference]: Start difference. First operand 1238 states and 3603 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:22,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:03:22,655 INFO L93 Difference]: Finished difference Result 1604 states and 4664 transitions. [2023-12-02 20:03:22,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 20:03:22,656 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-02 20:03:22,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:03:22,657 INFO L225 Difference]: With dead ends: 1604 [2023-12-02 20:03:22,657 INFO L226 Difference]: Without dead ends: 573 [2023-12-02 20:03:22,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-12-02 20:03:22,658 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 86 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 20:03:22,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 196 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 20:03:22,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2023-12-02 20:03:22,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 561. [2023-12-02 20:03:22,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 560 states have (on average 2.767857142857143) internal successors, (1550), 560 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:22,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 1550 transitions. [2023-12-02 20:03:22,666 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 1550 transitions. Word has length 36 [2023-12-02 20:03:22,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:03:22,666 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 1550 transitions. [2023-12-02 20:03:22,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:22,666 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 1550 transitions. [2023-12-02 20:03:22,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 20:03:22,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:03:22,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 20:03:22,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-02 20:03:22,668 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 20:03:22,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:03:22,668 INFO L85 PathProgramCache]: Analyzing trace with hash -20950240, now seen corresponding path program 6 times [2023-12-02 20:03:22,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:03:22,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685963247] [2023-12-02 20:03:22,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:03:22,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:03:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:03:22,959 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 20:03:22,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 20:03:22,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685963247] [2023-12-02 20:03:22,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685963247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:03:22,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:03:22,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 20:03:22,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133122334] [2023-12-02 20:03:22,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:03:22,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 20:03:22,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 20:03:22,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 20:03:22,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 20:03:22,961 INFO L87 Difference]: Start difference. First operand 561 states and 1550 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:23,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:03:23,092 INFO L93 Difference]: Finished difference Result 537 states and 1490 transitions. [2023-12-02 20:03:23,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:03:23,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-02 20:03:23,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:03:23,093 INFO L225 Difference]: With dead ends: 537 [2023-12-02 20:03:23,093 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 20:03:23,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-02 20:03:23,094 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 31 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 20:03:23,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 70 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 20:03:23,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 20:03:23,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 20:03:23,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:23,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 20:03:23,095 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2023-12-02 20:03:23,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:03:23,096 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 20:03:23,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:03:23,096 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 20:03:23,096 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 20:03:23,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-12-02 20:03:23,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-12-02 20:03:23,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-12-02 20:03:23,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-12-02 20:03:23,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-12-02 20:03:23,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-12-02 20:03:23,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-12-02 20:03:23,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (5 of 13 remaining) [2023-12-02 20:03:23,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 13 remaining) [2023-12-02 20:03:23,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 13 remaining) [2023-12-02 20:03:23,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 13 remaining) [2023-12-02 20:03:23,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 13 remaining) [2023-12-02 20:03:23,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2023-12-02 20:03:23,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 20:03:23,103 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 20:03:23,107 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-02 20:03:23,107 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 20:03:23,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:03:23 BasicIcfg [2023-12-02 20:03:23,110 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 20:03:23,110 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 20:03:23,111 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 20:03:23,111 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 20:03:23,111 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:03:04" (3/4) ... [2023-12-02 20:03:23,112 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 20:03:23,114 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-12-02 20:03:23,114 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-12-02 20:03:23,114 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-12-02 20:03:23,120 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 94 nodes and edges [2023-12-02 20:03:23,121 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-12-02 20:03:23,121 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-12-02 20:03:23,121 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 20:03:23,193 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_666f91d7-7f28-4559-97f9-125ef34440d9/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 20:03:23,193 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_666f91d7-7f28-4559-97f9-125ef34440d9/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 20:03:23,194 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 20:03:23,194 INFO L158 Benchmark]: Toolchain (without parser) took 20438.11ms. Allocated memory was 140.5MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 97.7MB in the beginning and 707.3MB in the end (delta: -609.6MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2023-12-02 20:03:23,195 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 51.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 20:03:23,195 INFO L158 Benchmark]: CACSL2BoogieTranslator took 610.91ms. Allocated memory is still 140.5MB. Free memory was 97.3MB in the beginning and 109.1MB in the end (delta: -11.8MB). Peak memory consumption was 37.6MB. Max. memory is 16.1GB. [2023-12-02 20:03:23,196 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.03ms. Allocated memory is still 140.5MB. Free memory was 109.1MB in the beginning and 106.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 20:03:23,196 INFO L158 Benchmark]: Boogie Preprocessor took 39.48ms. Allocated memory is still 140.5MB. Free memory was 106.1MB in the beginning and 103.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 20:03:23,197 INFO L158 Benchmark]: RCFGBuilder took 846.38ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 103.6MB in the beginning and 113.0MB in the end (delta: -9.3MB). Peak memory consumption was 55.7MB. Max. memory is 16.1GB. [2023-12-02 20:03:23,197 INFO L158 Benchmark]: TraceAbstraction took 18796.86ms. Allocated memory was 169.9MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 113.0MB in the beginning and 712.5MB in the end (delta: -599.6MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2023-12-02 20:03:23,197 INFO L158 Benchmark]: Witness Printer took 83.33ms. Allocated memory is still 1.8GB. Free memory was 712.5MB in the beginning and 707.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 20:03:23,199 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 51.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 610.91ms. Allocated memory is still 140.5MB. Free memory was 97.3MB in the beginning and 109.1MB in the end (delta: -11.8MB). Peak memory consumption was 37.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.03ms. Allocated memory is still 140.5MB. Free memory was 109.1MB in the beginning and 106.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.48ms. Allocated memory is still 140.5MB. Free memory was 106.1MB in the beginning and 103.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 846.38ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 103.6MB in the beginning and 113.0MB in the end (delta: -9.3MB). Peak memory consumption was 55.7MB. Max. memory is 16.1GB. * TraceAbstraction took 18796.86ms. Allocated memory was 169.9MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 113.0MB in the beginning and 712.5MB in the end (delta: -599.6MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. * Witness Printer took 83.33ms. Allocated memory is still 1.8GB. Free memory was 712.5MB in the beginning and 707.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 866]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 83 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 18.7s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1067 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1067 mSDsluCounter, 1587 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1193 mSDsCounter, 127 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2731 IncrementalHoareTripleChecker+Invalid, 2858 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 127 mSolverCounterUnsat, 394 mSDtfsCounter, 2731 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8621occurred in iteration=0, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 17 MinimizatonAttempts, 854 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 347 NumberOfCodeBlocks, 347 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 330 ConstructedInterpolants, 0 QuantifiedInterpolants, 2632 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-02 20:03:23,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_666f91d7-7f28-4559-97f9-125ef34440d9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE