./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d3b91d-15ee-4598-b40b-6d3e010e9718/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d3b91d-15ee-4598-b40b-6d3e010e9718/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d3b91d-15ee-4598-b40b-6d3e010e9718/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d3b91d-15ee-4598-b40b-6d3e010e9718/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d3b91d-15ee-4598-b40b-6d3e010e9718/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d3b91d-15ee-4598-b40b-6d3e010e9718/bin/uautomizer-verify-aQ6SnzHsRB --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 ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:42:26,581 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:42:26,649 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d3b91d-15ee-4598-b40b-6d3e010e9718/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 04:42:26,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:42:26,663 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:42:26,697 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:42:26,698 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:42:26,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:42:26,698 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:42:26,698 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:42:26,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:42:26,699 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:42:26,699 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:42:26,699 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:42:26,699 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:42:26,700 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:42:26,700 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:42:26,700 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:42:26,700 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:42:26,700 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:42:26,700 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 04:42:26,700 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 04:42:26,701 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 04:42:26,701 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:42:26,701 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:42:26,701 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:42:26,701 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:42:26,701 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:42:26,701 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:42:26,702 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:42:26,702 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:42:26,702 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:42:26,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:42:26,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:42:26,702 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:42:26,703 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:42:26,703 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:42:26,703 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:42:26,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:42:26,703 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:42:26,703 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:42:26,703 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:42:26,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:42:26,704 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:42:26,704 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:42:26,704 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:42:26,704 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:42:26,704 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_77d3b91d-15ee-4598-b40b-6d3e010e9718/bin/uautomizer-verify-aQ6SnzHsRB 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 -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 [2024-11-28 04:42:27,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:42:27,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:42:27,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:42:27,020 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:42:27,020 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:42:27,022 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d3b91d-15ee-4598-b40b-6d3e010e9718/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2024-11-28 04:42:29,909 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d3b91d-15ee-4598-b40b-6d3e010e9718/bin/uautomizer-verify-aQ6SnzHsRB/data/671437ed8/5822008e8e6d4205afe621409bd61f32/FLAG6cccfa971 [2024-11-28 04:42:30,267 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:42:30,268 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d3b91d-15ee-4598-b40b-6d3e010e9718/sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2024-11-28 04:42:30,286 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d3b91d-15ee-4598-b40b-6d3e010e9718/bin/uautomizer-verify-aQ6SnzHsRB/data/671437ed8/5822008e8e6d4205afe621409bd61f32/FLAG6cccfa971 [2024-11-28 04:42:30,301 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d3b91d-15ee-4598-b40b-6d3e010e9718/bin/uautomizer-verify-aQ6SnzHsRB/data/671437ed8/5822008e8e6d4205afe621409bd61f32 [2024-11-28 04:42:30,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:42:30,305 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:42:30,307 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:42:30,307 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:42:30,311 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:42:30,312 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:42:30" (1/1) ... [2024-11-28 04:42:30,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dd37a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:30, skipping insertion in model container [2024-11-28 04:42:30,313 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:42:30" (1/1) ... [2024-11-28 04:42:30,345 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:42:30,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:42:30,801 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:42:30,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:42:30,888 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:42:30,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:30 WrapperNode [2024-11-28 04:42:30,889 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:42:30,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:42:30,891 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:42:30,891 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:42:30,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:30" (1/1) ... [2024-11-28 04:42:30,919 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:30" (1/1) ... [2024-11-28 04:42:30,954 INFO L138 Inliner]: procedures = 171, calls = 44, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 159 [2024-11-28 04:42:30,958 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:42:30,958 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:42:30,958 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:42:30,959 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:42:30,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:30" (1/1) ... [2024-11-28 04:42:30,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:30" (1/1) ... [2024-11-28 04:42:30,971 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:30" (1/1) ... [2024-11-28 04:42:30,997 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 2, 5, 5]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0]. [2024-11-28 04:42:30,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:30" (1/1) ... [2024-11-28 04:42:30,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:30" (1/1) ... [2024-11-28 04:42:31,011 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:30" (1/1) ... [2024-11-28 04:42:31,012 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:30" (1/1) ... [2024-11-28 04:42:31,019 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:30" (1/1) ... [2024-11-28 04:42:31,020 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:30" (1/1) ... [2024-11-28 04:42:31,026 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:30" (1/1) ... [2024-11-28 04:42:31,028 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:42:31,032 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:42:31,032 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:42:31,032 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:42:31,036 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:30" (1/1) ... [2024-11-28 04:42:31,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:42:31,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d3b91d-15ee-4598-b40b-6d3e010e9718/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:31,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d3b91d-15ee-4598-b40b-6d3e010e9718/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:42:31,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d3b91d-15ee-4598-b40b-6d3e010e9718/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:42:31,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:42:31,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:42:31,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:42:31,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:42:31,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:42:31,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:42:31,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:42:31,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:42:31,104 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 04:42:31,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:42:31,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:42:31,105 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 04:42:31,105 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 04:42:31,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:42:31,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:42:31,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:42:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:42:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:42:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 04:42:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:42:31,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:42:31,109 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 04:42:31,268 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:42:31,270 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:42:31,614 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:42:31,614 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:42:31,791 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:42:31,791 INFO L312 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-28 04:42:31,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:42:31 BoogieIcfgContainer [2024-11-28 04:42:31,792 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:42:31,794 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:42:31,794 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:42:31,799 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:42:31,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:42:30" (1/3) ... [2024-11-28 04:42:31,799 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e19e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:42:31, skipping insertion in model container [2024-11-28 04:42:31,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:30" (2/3) ... [2024-11-28 04:42:31,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e19e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:42:31, skipping insertion in model container [2024-11-28 04:42:31,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:42:31" (3/3) ... [2024-11-28 04:42:31,801 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2024-11-28 04:42:31,817 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:42:31,818 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_60-invariant_racefree.i that has 2 procedures, 76 locations, 1 initial locations, 10 loop locations, and 7 error locations. [2024-11-28 04:42:31,818 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:42:31,885 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-28 04:42:31,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 98 transitions, 203 flow [2024-11-28 04:42:32,020 INFO L124 PetriNetUnfolderBase]: 32/147 cut-off events. [2024-11-28 04:42:32,024 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:42:32,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 147 events. 32/147 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 661 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 93. Up to 6 conditions per place. [2024-11-28 04:42:32,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 98 transitions, 203 flow [2024-11-28 04:42:32,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 98 transitions, 203 flow [2024-11-28 04:42:32,054 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:42:32,070 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@45387e91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:42:32,070 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-28 04:42:32,078 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:42:32,082 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 04:42:32,082 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:42:32,082 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:32,082 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:42:32,083 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-28 04:42:32,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:32,088 INFO L85 PathProgramCache]: Analyzing trace with hash 476419, now seen corresponding path program 1 times [2024-11-28 04:42:32,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:32,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521251466] [2024-11-28 04:42:32,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:32,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:32,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:32,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521251466] [2024-11-28 04:42:32,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521251466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:32,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:32,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:42:32,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051170090] [2024-11-28 04:42:32,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:32,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:42:32,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:32,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:42:32,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:42:32,482 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 98 [2024-11-28 04:42:32,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 98 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:32,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:32,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 98 [2024-11-28 04:42:32,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:32,910 INFO L124 PetriNetUnfolderBase]: 338/1050 cut-off events. [2024-11-28 04:42:32,910 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:42:32,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1757 conditions, 1050 events. 338/1050 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6569 event pairs, 285 based on Foata normal form. 266/1278 useless extension candidates. Maximal degree in co-relation 1682. Up to 635 conditions per place. [2024-11-28 04:42:32,925 INFO L140 encePairwiseOnDemand]: 74/98 looper letters, 53 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-11-28 04:42:32,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 89 transitions, 295 flow [2024-11-28 04:42:32,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:42:32,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:42:32,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2024-11-28 04:42:32,948 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-28 04:42:32,950 INFO L175 Difference]: Start difference. First operand has 79 places, 98 transitions, 203 flow. Second operand 3 states and 189 transitions. [2024-11-28 04:42:32,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 89 transitions, 295 flow [2024-11-28 04:42:32,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 89 transitions, 295 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:42:32,964 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 159 flow [2024-11-28 04:42:32,968 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2024-11-28 04:42:32,971 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2024-11-28 04:42:32,973 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 159 flow [2024-11-28 04:42:32,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:32,973 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:32,974 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:42:32,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:42:32,974 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-28 04:42:32,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:32,976 INFO L85 PathProgramCache]: Analyzing trace with hash 476420, now seen corresponding path program 1 times [2024-11-28 04:42:32,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:32,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544947398] [2024-11-28 04:42:32,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:32,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:33,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:33,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:33,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544947398] [2024-11-28 04:42:33,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544947398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:33,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:33,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:42:33,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248856316] [2024-11-28 04:42:33,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:33,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:42:33,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:33,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:42:33,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:42:33,169 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 98 [2024-11-28 04:42:33,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:33,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:33,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 98 [2024-11-28 04:42:33,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:33,456 INFO L124 PetriNetUnfolderBase]: 321/1000 cut-off events. [2024-11-28 04:42:33,456 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 04:42:33,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 1000 events. 321/1000 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6128 event pairs, 266 based on Foata normal form. 1/948 useless extension candidates. Maximal degree in co-relation 1645. Up to 636 conditions per place. [2024-11-28 04:42:33,471 INFO L140 encePairwiseOnDemand]: 94/98 looper letters, 53 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2024-11-28 04:42:33,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 90 transitions, 301 flow [2024-11-28 04:42:33,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:42:33,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:42:33,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2024-11-28 04:42:33,475 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-28 04:42:33,476 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 159 flow. Second operand 3 states and 168 transitions. [2024-11-28 04:42:33,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 90 transitions, 301 flow [2024-11-28 04:42:33,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 90 transitions, 297 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:42:33,480 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 165 flow [2024-11-28 04:42:33,484 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2024-11-28 04:42:33,485 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, -1 predicate places. [2024-11-28 04:42:33,485 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 165 flow [2024-11-28 04:42:33,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:33,486 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:33,486 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 04:42:33,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:42:33,486 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-28 04:42:33,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:33,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1912194304, now seen corresponding path program 1 times [2024-11-28 04:42:33,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:33,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796405611] [2024-11-28 04:42:33,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:33,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:33,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:33,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:33,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796405611] [2024-11-28 04:42:33,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796405611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:33,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:33,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:42:33,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764675902] [2024-11-28 04:42:33,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:33,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:42:33,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:33,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:42:33,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:42:33,796 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 98 [2024-11-28 04:42:33,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 165 flow. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:33,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:33,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 98 [2024-11-28 04:42:33,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:33,921 INFO L124 PetriNetUnfolderBase]: 46/145 cut-off events. [2024-11-28 04:42:33,921 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-28 04:42:33,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 145 events. 46/145 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 590 event pairs, 0 based on Foata normal form. 32/171 useless extension candidates. Maximal degree in co-relation 265. Up to 93 conditions per place. [2024-11-28 04:42:33,923 INFO L140 encePairwiseOnDemand]: 94/98 looper letters, 35 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-11-28 04:42:33,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 194 flow [2024-11-28 04:42:33,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:33,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:42:33,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2024-11-28 04:42:33,925 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46683673469387754 [2024-11-28 04:42:33,925 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 165 flow. Second operand 4 states and 183 transitions. [2024-11-28 04:42:33,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 194 flow [2024-11-28 04:42:33,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 188 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:42:33,927 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 84 flow [2024-11-28 04:42:33,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-11-28 04:42:33,928 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, -36 predicate places. [2024-11-28 04:42:33,928 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 84 flow [2024-11-28 04:42:33,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:33,928 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:33,929 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-28 04:42:33,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:42:33,929 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-28 04:42:33,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:33,930 INFO L85 PathProgramCache]: Analyzing trace with hash -851518233, now seen corresponding path program 1 times [2024-11-28 04:42:33,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:33,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113864320] [2024-11-28 04:42:33,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:33,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:42:33,956 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:42:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:42:34,004 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:42:34,004 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:42:34,005 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-11-28 04:42:34,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2024-11-28 04:42:34,010 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2024-11-28 04:42:34,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2024-11-28 04:42:34,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2024-11-28 04:42:34,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (3 of 9 remaining) [2024-11-28 04:42:34,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 9 remaining) [2024-11-28 04:42:34,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 9 remaining) [2024-11-28 04:42:34,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2024-11-28 04:42:34,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:42:34,012 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-28 04:42:34,014 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 04:42:34,015 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 04:42:34,057 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 04:42:34,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 143 transitions, 302 flow [2024-11-28 04:42:34,105 INFO L124 PetriNetUnfolderBase]: 55/253 cut-off events. [2024-11-28 04:42:34,105 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 04:42:34,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 253 events. 55/253 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1271 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 151. Up to 9 conditions per place. [2024-11-28 04:42:34,108 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 143 transitions, 302 flow [2024-11-28 04:42:34,111 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 143 transitions, 302 flow [2024-11-28 04:42:34,113 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:42:34,114 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@45387e91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:42:34,114 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-28 04:42:34,117 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:42:34,117 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 04:42:34,117 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:42:34,118 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:34,118 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:42:34,118 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-11-28 04:42:34,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:34,122 INFO L85 PathProgramCache]: Analyzing trace with hash 618418, now seen corresponding path program 1 times [2024-11-28 04:42:34,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:34,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815823937] [2024-11-28 04:42:34,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:34,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:34,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:34,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:34,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815823937] [2024-11-28 04:42:34,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815823937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:34,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:34,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:42:34,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704465259] [2024-11-28 04:42:34,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:34,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:42:34,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:34,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:42:34,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:42:34,211 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 143 [2024-11-28 04:42:34,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 143 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:34,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:34,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 143 [2024-11-28 04:42:34,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:37,513 INFO L124 PetriNetUnfolderBase]: 11475/23376 cut-off events. [2024-11-28 04:42:37,514 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-11-28 04:42:37,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40793 conditions, 23376 events. 11475/23376 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 220226 event pairs, 9705 based on Foata normal form. 6815/29358 useless extension candidates. Maximal degree in co-relation 16441. Up to 15663 conditions per place. [2024-11-28 04:42:37,659 INFO L140 encePairwiseOnDemand]: 109/143 looper letters, 85 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2024-11-28 04:42:37,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 138 transitions, 466 flow [2024-11-28 04:42:37,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:42:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:42:37,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2024-11-28 04:42:37,663 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6806526806526807 [2024-11-28 04:42:37,664 INFO L175 Difference]: Start difference. First operand has 114 places, 143 transitions, 302 flow. Second operand 3 states and 292 transitions. [2024-11-28 04:42:37,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 138 transitions, 466 flow [2024-11-28 04:42:37,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 138 transitions, 466 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:42:37,672 INFO L231 Difference]: Finished difference. Result has 111 places, 108 transitions, 236 flow [2024-11-28 04:42:37,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=111, PETRI_TRANSITIONS=108} [2024-11-28 04:42:37,674 INFO L279 CegarLoopForPetriNet]: 114 programPoint places, -3 predicate places. [2024-11-28 04:42:37,674 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 108 transitions, 236 flow [2024-11-28 04:42:37,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:37,676 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:37,676 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:42:37,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:42:37,677 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-11-28 04:42:37,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:37,677 INFO L85 PathProgramCache]: Analyzing trace with hash 618419, now seen corresponding path program 1 times [2024-11-28 04:42:37,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:37,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500008947] [2024-11-28 04:42:37,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:37,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:37,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:37,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:37,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500008947] [2024-11-28 04:42:37,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500008947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:37,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:37,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:42:37,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108217617] [2024-11-28 04:42:37,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:37,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:42:37,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:37,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:42:37,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:42:37,789 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 143 [2024-11-28 04:42:37,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 108 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:37,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:37,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 143 [2024-11-28 04:42:37,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:40,496 INFO L124 PetriNetUnfolderBase]: 10930/22799 cut-off events. [2024-11-28 04:42:40,497 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2024-11-28 04:42:40,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39672 conditions, 22799 events. 10930/22799 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 216966 event pairs, 9844 based on Foata normal form. 1/21767 useless extension candidates. Maximal degree in co-relation 35754. Up to 16477 conditions per place. [2024-11-28 04:42:40,647 INFO L140 encePairwiseOnDemand]: 139/143 looper letters, 71 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2024-11-28 04:42:40,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 125 transitions, 416 flow [2024-11-28 04:42:40,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:42:40,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:42:40,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2024-11-28 04:42:40,649 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5524475524475524 [2024-11-28 04:42:40,649 INFO L175 Difference]: Start difference. First operand has 111 places, 108 transitions, 236 flow. Second operand 3 states and 237 transitions. [2024-11-28 04:42:40,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 125 transitions, 416 flow [2024-11-28 04:42:40,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 125 transitions, 412 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:42:40,698 INFO L231 Difference]: Finished difference. Result has 112 places, 109 transitions, 246 flow [2024-11-28 04:42:40,699 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=112, PETRI_TRANSITIONS=109} [2024-11-28 04:42:40,700 INFO L279 CegarLoopForPetriNet]: 114 programPoint places, -2 predicate places. [2024-11-28 04:42:40,700 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 109 transitions, 246 flow [2024-11-28 04:42:40,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:40,700 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:40,700 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 04:42:40,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:42:40,701 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-11-28 04:42:40,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:40,701 INFO L85 PathProgramCache]: Analyzing trace with hash -87050268, now seen corresponding path program 1 times [2024-11-28 04:42:40,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:40,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047049205] [2024-11-28 04:42:40,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:40,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:41,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:41,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047049205] [2024-11-28 04:42:41,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047049205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:41,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:41,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:42:41,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265897472] [2024-11-28 04:42:41,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:41,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:42:41,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:41,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:42:41,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:42:41,117 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 143 [2024-11-28 04:42:41,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 109 transitions, 246 flow. Second operand has 5 states, 5 states have (on average 54.4) internal successors, (272), 5 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:41,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:41,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 143 [2024-11-28 04:42:41,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:42,857 INFO L124 PetriNetUnfolderBase]: 10395/21312 cut-off events. [2024-11-28 04:42:42,857 INFO L125 PetriNetUnfolderBase]: For 687/687 co-relation queries the response was YES. [2024-11-28 04:42:42,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37760 conditions, 21312 events. 10395/21312 cut-off events. For 687/687 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 197994 event pairs, 4821 based on Foata normal form. 288/21046 useless extension candidates. Maximal degree in co-relation 35276. Up to 12946 conditions per place. [2024-11-28 04:42:43,057 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 130 selfloop transitions, 5 changer transitions 0/186 dead transitions. [2024-11-28 04:42:43,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 186 transitions, 668 flow [2024-11-28 04:42:43,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:43,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:42:43,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 402 transitions. [2024-11-28 04:42:43,059 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5622377622377622 [2024-11-28 04:42:43,060 INFO L175 Difference]: Start difference. First operand has 112 places, 109 transitions, 246 flow. Second operand 5 states and 402 transitions. [2024-11-28 04:42:43,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 186 transitions, 668 flow [2024-11-28 04:42:43,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 186 transitions, 666 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:42:43,064 INFO L231 Difference]: Finished difference. Result has 115 places, 109 transitions, 257 flow [2024-11-28 04:42:43,065 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=115, PETRI_TRANSITIONS=109} [2024-11-28 04:42:43,066 INFO L279 CegarLoopForPetriNet]: 114 programPoint places, 1 predicate places. [2024-11-28 04:42:43,066 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 109 transitions, 257 flow [2024-11-28 04:42:43,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.4) internal successors, (272), 5 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:43,066 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:43,066 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-28 04:42:43,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:42:43,067 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-11-28 04:42:43,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:43,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1622773037, now seen corresponding path program 1 times [2024-11-28 04:42:43,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:43,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599316667] [2024-11-28 04:42:43,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:43,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:42:43,098 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:42:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:42:43,126 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:42:43,129 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:42:43,129 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-28 04:42:43,129 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2024-11-28 04:42:43,129 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2024-11-28 04:42:43,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2024-11-28 04:42:43,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2024-11-28 04:42:43,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2024-11-28 04:42:43,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2024-11-28 04:42:43,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 10 remaining) [2024-11-28 04:42:43,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2024-11-28 04:42:43,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2024-11-28 04:42:43,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:42:43,130 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-28 04:42:43,131 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 04:42:43,131 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 04:42:43,178 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 04:42:43,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 188 transitions, 403 flow [2024-11-28 04:42:43,234 INFO L124 PetriNetUnfolderBase]: 81/380 cut-off events. [2024-11-28 04:42:43,234 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-28 04:42:43,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 380 events. 81/380 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2020 event pairs, 1 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 264. Up to 12 conditions per place. [2024-11-28 04:42:43,239 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 188 transitions, 403 flow [2024-11-28 04:42:43,243 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 188 transitions, 403 flow [2024-11-28 04:42:43,246 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:42:43,247 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@45387e91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:42:43,250 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-28 04:42:43,252 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:42:43,252 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 04:42:43,252 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:42:43,252 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:43,252 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:42:43,252 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-28 04:42:43,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:43,256 INFO L85 PathProgramCache]: Analyzing trace with hash 805102, now seen corresponding path program 1 times [2024-11-28 04:42:43,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:43,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981072332] [2024-11-28 04:42:43,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:43,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:43,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:43,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:43,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981072332] [2024-11-28 04:42:43,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981072332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:43,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:43,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:42:43,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035066301] [2024-11-28 04:42:43,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:43,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:42:43,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:43,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:42:43,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:42:43,320 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 188 [2024-11-28 04:42:43,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 188 transitions, 403 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:43,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:43,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 188 [2024-11-28 04:42:43,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand