./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.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_3af4e7fd-1397-4b11-94b0-6df2835d531f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3af4e7fd-1397-4b11-94b0-6df2835d531f/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3af4e7fd-1397-4b11-94b0-6df2835d531f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3af4e7fd-1397-4b11-94b0-6df2835d531f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3af4e7fd-1397-4b11-94b0-6df2835d531f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3af4e7fd-1397-4b11-94b0-6df2835d531f/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:32:26,666 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:32:26,729 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3af4e7fd-1397-4b11-94b0-6df2835d531f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 04:32:26,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:32:26,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:32:26,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:32:26,757 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:32:26,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:32:26,758 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:32:26,758 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:32:26,759 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:32:26,759 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:32:26,760 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:32:26,760 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:32:26,761 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:32:26,762 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:32:26,762 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:32:26,763 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:32:26,763 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:32:26,764 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:32:26,764 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 04:32:26,765 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 04:32:26,765 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 04:32:26,766 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:32:26,766 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:32:26,767 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:32:26,767 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:32:26,768 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:32:26,768 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:32:26,769 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:32:26,769 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:32:26,770 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:32:26,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:32:26,771 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:32:26,771 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:32:26,771 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:32:26,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:32:26,772 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:32:26,772 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:32:26,772 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:32:26,772 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:32:26,773 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_3af4e7fd-1397-4b11-94b0-6df2835d531f/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3af4e7fd-1397-4b11-94b0-6df2835d531f/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d [2023-11-29 04:32:26,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:32:26,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:32:26,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:32:26,993 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:32:26,993 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:32:26,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3af4e7fd-1397-4b11-94b0-6df2835d531f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i [2023-11-29 04:32:29,757 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:32:30,029 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:32:30,029 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3af4e7fd-1397-4b11-94b0-6df2835d531f/sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i [2023-11-29 04:32:30,045 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3af4e7fd-1397-4b11-94b0-6df2835d531f/bin/uautomizer-verify-BQ2R08f2Ya/data/7b29e258a/2ae9f9172ee7485a85b3902bad0fabee/FLAG96458e049 [2023-11-29 04:32:30,057 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3af4e7fd-1397-4b11-94b0-6df2835d531f/bin/uautomizer-verify-BQ2R08f2Ya/data/7b29e258a/2ae9f9172ee7485a85b3902bad0fabee [2023-11-29 04:32:30,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:32:30,061 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:32:30,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:32:30,062 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:32:30,066 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:32:30,066 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:32:30" (1/1) ... [2023-11-29 04:32:30,067 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af6aebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:30, skipping insertion in model container [2023-11-29 04:32:30,067 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:32:30" (1/1) ... [2023-11-29 04:32:30,117 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:32:30,548 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:32:30,563 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:32:30,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:32:30,687 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:32:30,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:30 WrapperNode [2023-11-29 04:32:30,688 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:32:30,689 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:32:30,689 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:32:30,689 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:32:30,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:30" (1/1) ... [2023-11-29 04:32:30,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:30" (1/1) ... [2023-11-29 04:32:30,751 INFO L138 Inliner]: procedures = 280, calls = 97, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 388 [2023-11-29 04:32:30,752 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:32:30,752 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:32:30,753 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:32:30,753 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:32:30,768 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:30" (1/1) ... [2023-11-29 04:32:30,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:30" (1/1) ... [2023-11-29 04:32:30,775 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:30" (1/1) ... [2023-11-29 04:32:30,810 INFO L175 MemorySlicer]: Split 51 memory accesses to 9 slices as follows [2, 5, 5, 5, 5, 23, 2, 2, 2]. 45 percent of accesses are in the largest equivalence class. The 22 initializations are split as follows [2, 5, 5, 5, 5, 0, 0, 0, 0]. The 15 writes are split as follows [0, 0, 0, 0, 0, 12, 1, 1, 1]. [2023-11-29 04:32:30,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:30" (1/1) ... [2023-11-29 04:32:30,810 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:30" (1/1) ... [2023-11-29 04:32:30,831 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:30" (1/1) ... [2023-11-29 04:32:30,837 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:30" (1/1) ... [2023-11-29 04:32:30,842 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:30" (1/1) ... [2023-11-29 04:32:30,846 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:30" (1/1) ... [2023-11-29 04:32:30,855 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:32:30,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:32:30,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:32:30,856 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:32:30,857 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:30" (1/1) ... [2023-11-29 04:32:30,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:32:30,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3af4e7fd-1397-4b11-94b0-6df2835d531f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:32:30,886 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3af4e7fd-1397-4b11-94b0-6df2835d531f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:32:30,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3af4e7fd-1397-4b11-94b0-6df2835d531f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:32:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:32:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 04:32:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 04:32:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 04:32:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 04:32:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 04:32:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-29 04:32:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-29 04:32:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-29 04:32:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-29 04:32:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-29 04:32:30,926 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-29 04:32:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:32:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 04:32:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 04:32:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 04:32:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 04:32:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 04:32:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 04:32:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 04:32:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-29 04:32:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-29 04:32:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-29 04:32:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-29 04:32:30,928 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-29 04:32:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:32:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:32:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:32:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 04:32:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 04:32:30,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 04:32:30,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-29 04:32:30,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-29 04:32:30,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-29 04:32:30,929 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 04:32:30,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 04:32:30,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:32:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 04:32:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 04:32:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 04:32:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 04:32:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 04:32:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-29 04:32:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-29 04:32:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-29 04:32:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-29 04:32:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-11-29 04:32:30,931 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-11-29 04:32:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:32:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:32:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:32:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 04:32:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 04:32:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 04:32:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 04:32:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 04:32:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-29 04:32:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:32:30,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:32:30,934 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 04:32:31,143 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:32:31,145 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:32:31,723 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:32:32,020 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:32:32,020 INFO L309 CfgBuilder]: Removed 28 assume(true) statements. [2023-11-29 04:32:32,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:32:32 BoogieIcfgContainer [2023-11-29 04:32:32,021 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:32:32,023 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:32:32,023 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:32:32,026 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:32:32,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:32:30" (1/3) ... [2023-11-29 04:32:32,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4a7c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:32:32, skipping insertion in model container [2023-11-29 04:32:32,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:30" (2/3) ... [2023-11-29 04:32:32,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4a7c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:32:32, skipping insertion in model container [2023-11-29 04:32:32,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:32:32" (3/3) ... [2023-11-29 04:32:32,029 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_83-list2_racing1.i [2023-11-29 04:32:32,049 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:32:32,049 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2023-11-29 04:32:32,049 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:32:32,177 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-11-29 04:32:32,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 230 transitions, 499 flow [2023-11-29 04:32:32,417 INFO L124 PetriNetUnfolderBase]: 126/749 cut-off events. [2023-11-29 04:32:32,417 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-29 04:32:32,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 749 events. 126/749 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5482 event pairs, 0 based on Foata normal form. 0/423 useless extension candidates. Maximal degree in co-relation 388. Up to 16 conditions per place. [2023-11-29 04:32:32,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 230 transitions, 499 flow [2023-11-29 04:32:32,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 230 transitions, 499 flow [2023-11-29 04:32:32,461 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:32:32,468 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=PETRI_NET, 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;@42c85410, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:32:32,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 104 error locations. [2023-11-29 04:32:32,471 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:32:32,471 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 04:32:32,471 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:32:32,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:32:32,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 04:32:32,473 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2023-11-29 04:32:32,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:32:32,478 INFO L85 PathProgramCache]: Analyzing trace with hash 32591, now seen corresponding path program 1 times [2023-11-29 04:32:32,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:32:32,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834883925] [2023-11-29 04:32:32,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:32:32,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:32:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:32:32,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:32:32,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:32:32,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834883925] [2023-11-29 04:32:32,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834883925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:32:32,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:32:32,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:32:32,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436357080] [2023-11-29 04:32:32,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:32:32,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:32:32,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:32:32,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:32:32,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:32:32,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 230 [2023-11-29 04:32:32,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 230 transitions, 499 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:32:32,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:32:32,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 230 [2023-11-29 04:32:32,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:32:58,736 INFO L124 PetriNetUnfolderBase]: 153559/282027 cut-off events. [2023-11-29 04:32:58,736 INFO L125 PetriNetUnfolderBase]: For 8674/8674 co-relation queries the response was YES. [2023-11-29 04:32:59,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494917 conditions, 282027 events. 153559/282027 cut-off events. For 8674/8674 co-relation queries the response was YES. Maximal size of possible extension queue 5879. Compared 3132608 event pairs, 141756 based on Foata normal form. 31418/282377 useless extension candidates. Maximal degree in co-relation 430182. Up to 208485 conditions per place. [2023-11-29 04:33:01,014 INFO L140 encePairwiseOnDemand]: 198/230 looper letters, 93 selfloop transitions, 2 changer transitions 0/198 dead transitions. [2023-11-29 04:33:01,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 198 transitions, 625 flow [2023-11-29 04:33:01,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:33:01,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:33:01,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2023-11-29 04:33:01,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6289855072463768 [2023-11-29 04:33:01,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2023-11-29 04:33:01,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2023-11-29 04:33:01,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:33:01,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2023-11-29 04:33:01,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:33:01,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:33:01,047 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:33:01,049 INFO L175 Difference]: Start difference. First operand has 198 places, 230 transitions, 499 flow. Second operand 3 states and 434 transitions. [2023-11-29 04:33:01,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 198 transitions, 625 flow [2023-11-29 04:33:01,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 198 transitions, 625 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:33:01,175 INFO L231 Difference]: Finished difference. Result has 194 places, 198 transitions, 439 flow [2023-11-29 04:33:01,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=439, PETRI_PLACES=194, PETRI_TRANSITIONS=198} [2023-11-29 04:33:01,181 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, -4 predicate places. [2023-11-29 04:33:01,181 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 198 transitions, 439 flow [2023-11-29 04:33:01,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:33:01,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:33:01,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 04:33:01,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:33:01,182 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2023-11-29 04:33:01,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:33:01,183 INFO L85 PathProgramCache]: Analyzing trace with hash 32592, now seen corresponding path program 1 times [2023-11-29 04:33:01,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:33:01,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549277802] [2023-11-29 04:33:01,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:33:01,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:33:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:33:01,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:33:01,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:33:01,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549277802] [2023-11-29 04:33:01,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549277802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:33:01,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:33:01,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:33:01,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132730874] [2023-11-29 04:33:01,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:33:01,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:33:01,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:33:01,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:33:01,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:33:01,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 230 [2023-11-29 04:33:01,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 198 transitions, 439 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:33:01,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:33:01,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 230 [2023-11-29 04:33:01,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:33:25,422 INFO L124 PetriNetUnfolderBase]: 153559/282023 cut-off events. [2023-11-29 04:33:25,423 INFO L125 PetriNetUnfolderBase]: For 8675/8675 co-relation queries the response was YES. [2023-11-29 04:33:26,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494914 conditions, 282023 events. 153559/282023 cut-off events. For 8675/8675 co-relation queries the response was YES. Maximal size of possible extension queue 5879. Compared 3132606 event pairs, 141756 based on Foata normal form. 3/250958 useless extension candidates. Maximal degree in co-relation 494898. Up to 208485 conditions per place. [2023-11-29 04:33:27,607 INFO L140 encePairwiseOnDemand]: 224/230 looper letters, 91 selfloop transitions, 2 changer transitions 0/194 dead transitions. [2023-11-29 04:33:27,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 194 transitions, 617 flow [2023-11-29 04:33:27,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:33:27,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:33:27,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 412 transitions. [2023-11-29 04:33:27,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5971014492753624 [2023-11-29 04:33:27,612 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 412 transitions. [2023-11-29 04:33:27,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 412 transitions. [2023-11-29 04:33:27,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:33:27,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 412 transitions. [2023-11-29 04:33:27,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:33:27,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:33:27,620 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:33:27,620 INFO L175 Difference]: Start difference. First operand has 194 places, 198 transitions, 439 flow. Second operand 3 states and 412 transitions. [2023-11-29 04:33:27,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 194 transitions, 617 flow [2023-11-29 04:33:27,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 194 transitions, 613 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:33:27,691 INFO L231 Difference]: Finished difference. Result has 190 places, 194 transitions, 431 flow [2023-11-29 04:33:27,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=431, PETRI_PLACES=190, PETRI_TRANSITIONS=194} [2023-11-29 04:33:27,692 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, -8 predicate places. [2023-11-29 04:33:27,693 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 194 transitions, 431 flow [2023-11-29 04:33:27,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:33:27,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:33:27,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:33:27,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:33:27,693 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2023-11-29 04:33:27,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:33:27,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1994544029, now seen corresponding path program 1 times [2023-11-29 04:33:27,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:33:27,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525202773] [2023-11-29 04:33:27,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:33:27,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:33:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:33:27,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:33:27,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:33:27,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525202773] [2023-11-29 04:33:27,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525202773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:33:27,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:33:27,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:33:27,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261026412] [2023-11-29 04:33:27,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:33:27,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:33:27,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:33:27,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:33:27,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:33:27,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 230 [2023-11-29 04:33:27,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 194 transitions, 431 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:33:27,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:33:27,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 230 [2023-11-29 04:33:27,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:33:52,871 INFO L124 PetriNetUnfolderBase]: 171331/304849 cut-off events. [2023-11-29 04:33:52,871 INFO L125 PetriNetUnfolderBase]: For 8674/8674 co-relation queries the response was YES. [2023-11-29 04:33:53,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542616 conditions, 304849 events. 171331/304849 cut-off events. For 8674/8674 co-relation queries the response was YES. Maximal size of possible extension queue 6335. Compared 3340912 event pairs, 124188 based on Foata normal form. 0/273751 useless extension candidates. Maximal degree in co-relation 542600. Up to 183636 conditions per place. [2023-11-29 04:33:55,144 INFO L140 encePairwiseOnDemand]: 226/230 looper letters, 155 selfloop transitions, 2 changer transitions 0/254 dead transitions. [2023-11-29 04:33:55,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 254 transitions, 865 flow [2023-11-29 04:33:55,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:33:55,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:33:55,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2023-11-29 04:33:55,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6869565217391305 [2023-11-29 04:33:55,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions. [2023-11-29 04:33:55,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions. [2023-11-29 04:33:55,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:33:55,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions. [2023-11-29 04:33:55,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:33:55,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:33:55,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:33:55,151 INFO L175 Difference]: Start difference. First operand has 190 places, 194 transitions, 431 flow. Second operand 3 states and 474 transitions. [2023-11-29 04:33:55,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 254 transitions, 865 flow [2023-11-29 04:33:55,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 254 transitions, 861 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:33:55,235 INFO L231 Difference]: Finished difference. Result has 188 places, 192 transitions, 427 flow [2023-11-29 04:33:55,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=427, PETRI_PLACES=188, PETRI_TRANSITIONS=192} [2023-11-29 04:33:55,236 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, -10 predicate places. [2023-11-29 04:33:55,236 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 192 transitions, 427 flow [2023-11-29 04:33:55,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:33:55,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:33:55,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:33:55,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:33:55,237 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2023-11-29 04:33:55,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:33:55,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1994544030, now seen corresponding path program 1 times [2023-11-29 04:33:55,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:33:55,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027599610] [2023-11-29 04:33:55,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:33:55,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:33:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:33:55,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:33:55,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:33:55,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027599610] [2023-11-29 04:33:55,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027599610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:33:55,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:33:55,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:33:55,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606487341] [2023-11-29 04:33:55,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:33:55,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:33:55,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:33:55,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:33:55,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:33:55,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 230 [2023-11-29 04:33:55,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 192 transitions, 427 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:33:55,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:33:55,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 230 [2023-11-29 04:33:55,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:34:17,717 INFO L124 PetriNetUnfolderBase]: 148430/273531 cut-off events. [2023-11-29 04:34:17,717 INFO L125 PetriNetUnfolderBase]: For 15499/15547 co-relation queries the response was YES. [2023-11-29 04:34:18,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485527 conditions, 273531 events. 148430/273531 cut-off events. For 15499/15547 co-relation queries the response was YES. Maximal size of possible extension queue 5809. Compared 3052000 event pairs, 137814 based on Foata normal form. 1/243669 useless extension candidates. Maximal degree in co-relation 428226. Up to 200922 conditions per place. [2023-11-29 04:34:19,721 INFO L140 encePairwiseOnDemand]: 225/230 looper letters, 94 selfloop transitions, 3 changer transitions 0/195 dead transitions. [2023-11-29 04:34:19,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 195 transitions, 627 flow [2023-11-29 04:34:19,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:34:19,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:34:19,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-11-29 04:34:19,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6130434782608696 [2023-11-29 04:34:19,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-11-29 04:34:19,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-11-29 04:34:19,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:34:19,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-11-29 04:34:19,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:34:19,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:34:19,727 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:34:19,727 INFO L175 Difference]: Start difference. First operand has 188 places, 192 transitions, 427 flow. Second operand 3 states and 423 transitions. [2023-11-29 04:34:19,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 195 transitions, 627 flow [2023-11-29 04:34:20,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 195 transitions, 623 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:34:20,485 INFO L231 Difference]: Finished difference. Result has 189 places, 194 transitions, 444 flow [2023-11-29 04:34:20,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=444, PETRI_PLACES=189, PETRI_TRANSITIONS=194} [2023-11-29 04:34:20,486 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, -9 predicate places. [2023-11-29 04:34:20,487 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 194 transitions, 444 flow [2023-11-29 04:34:20,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:34:20,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:34:20,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:34:20,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:34:20,487 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2023-11-29 04:34:20,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:34:20,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1410086957, now seen corresponding path program 1 times [2023-11-29 04:34:20,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:34:20,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891852687] [2023-11-29 04:34:20,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:20,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:34:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:20,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:34:20,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:34:20,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891852687] [2023-11-29 04:34:20,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891852687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:34:20,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:34:20,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:34:20,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578218208] [2023-11-29 04:34:20,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:34:20,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:34:20,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:34:20,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:34:20,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:34:20,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 230 [2023-11-29 04:34:20,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 194 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:34:20,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:34:20,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 230 [2023-11-29 04:34:20,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand