./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_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_bf187ea7-81b3-47de-830b-ffa50502ef0b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf187ea7-81b3-47de-830b-ffa50502ef0b/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_bf187ea7-81b3-47de-830b-ffa50502ef0b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf187ea7-81b3-47de-830b-ffa50502ef0b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf187ea7-81b3-47de-830b-ffa50502ef0b/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_bf187ea7-81b3-47de-830b-ffa50502ef0b/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 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:24:27,215 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:24:27,278 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf187ea7-81b3-47de-830b-ffa50502ef0b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 03:24:27,283 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:24:27,284 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:24:27,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:24:27,310 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:24:27,310 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:24:27,311 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:24:27,311 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:24:27,311 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:24:27,311 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:24:27,312 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:24:27,312 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:24:27,312 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:24:27,312 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:24:27,312 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:24:27,313 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:24:27,313 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:24:27,313 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:24:27,313 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:24:27,313 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:24:27,313 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:24:27,313 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:24:27,313 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:24:27,313 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:24:27,314 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:24:27,314 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:24:27,314 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:24:27,314 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:24:27,314 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:24:27,315 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:24:27,315 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:24:27,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:24:27,315 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:24:27,315 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:24:27,315 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:24:27,315 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:24:27,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:24:27,316 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:24:27,316 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:24:27,316 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:24:27,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:24:27,316 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:24:27,317 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:24:27,317 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:24:27,317 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:24:27,317 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_bf187ea7-81b3-47de-830b-ffa50502ef0b/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 -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 [2024-11-28 03:24:27,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:24:27,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:24:27,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:24:27,615 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:24:27,615 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:24:27,617 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf187ea7-81b3-47de-830b-ffa50502ef0b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2024-11-28 03:24:30,677 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf187ea7-81b3-47de-830b-ffa50502ef0b/bin/uautomizer-verify-aQ6SnzHsRB/data/ab9649bf9/366cac6ea9dd40ac89735f4d89e0cc67/FLAGb82f8a3f9 [2024-11-28 03:24:31,127 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:24:31,129 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf187ea7-81b3-47de-830b-ffa50502ef0b/sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2024-11-28 03:24:31,152 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf187ea7-81b3-47de-830b-ffa50502ef0b/bin/uautomizer-verify-aQ6SnzHsRB/data/ab9649bf9/366cac6ea9dd40ac89735f4d89e0cc67/FLAGb82f8a3f9 [2024-11-28 03:24:31,174 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf187ea7-81b3-47de-830b-ffa50502ef0b/bin/uautomizer-verify-aQ6SnzHsRB/data/ab9649bf9/366cac6ea9dd40ac89735f4d89e0cc67 [2024-11-28 03:24:31,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:24:31,182 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:24:31,186 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:24:31,186 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:24:31,193 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:24:31,194 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:24:31" (1/1) ... [2024-11-28 03:24:31,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c85edcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:31, skipping insertion in model container [2024-11-28 03:24:31,197 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:24:31" (1/1) ... [2024-11-28 03:24:31,244 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:24:31,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:24:31,705 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:24:31,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:24:31,789 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:24:31,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:31 WrapperNode [2024-11-28 03:24:31,790 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:24:31,791 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:24:31,791 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:24:31,791 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:24:31,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:31" (1/1) ... [2024-11-28 03:24:31,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:31" (1/1) ... [2024-11-28 03:24:31,858 INFO L138 Inliner]: procedures = 172, calls = 61, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 150 [2024-11-28 03:24:31,858 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:24:31,863 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:24:31,863 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:24:31,863 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:24:31,873 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:31" (1/1) ... [2024-11-28 03:24:31,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:31" (1/1) ... [2024-11-28 03:24:31,880 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:31" (1/1) ... [2024-11-28 03:24:31,909 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-11-28 03:24:31,909 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:31" (1/1) ... [2024-11-28 03:24:31,909 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:31" (1/1) ... [2024-11-28 03:24:31,922 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:31" (1/1) ... [2024-11-28 03:24:31,926 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:31" (1/1) ... [2024-11-28 03:24:31,935 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:31" (1/1) ... [2024-11-28 03:24:31,940 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:31" (1/1) ... [2024-11-28 03:24:31,941 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:31" (1/1) ... [2024-11-28 03:24:31,944 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:24:31,945 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:24:31,945 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:24:31,945 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:24:31,946 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:31" (1/1) ... [2024-11-28 03:24:31,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:24:31,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf187ea7-81b3-47de-830b-ffa50502ef0b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:24:31,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf187ea7-81b3-47de-830b-ffa50502ef0b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:24:31,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf187ea7-81b3-47de-830b-ffa50502ef0b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:24:32,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:24:32,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:24:32,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:24:32,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 03:24:32,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 03:24:32,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:24:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:24:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:24:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 03:24:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 03:24:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 03:24:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:24:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:24:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 03:24:32,021 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 03:24:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:24:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-11-28 03:24:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:24:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:24:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:24:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 03:24:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 03:24:32,022 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 03:24:32,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:24:32,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:24:32,023 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 03:24:32,199 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:24:32,200 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:24:32,662 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:24:32,662 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:24:32,919 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:24:32,920 INFO L312 CfgBuilder]: Removed 13 assume(true) statements. [2024-11-28 03:24:32,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:24:32 BoogieIcfgContainer [2024-11-28 03:24:32,920 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:24:32,922 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:24:32,922 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:24:32,927 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:24:32,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:24:31" (1/3) ... [2024-11-28 03:24:32,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d53445c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:24:32, skipping insertion in model container [2024-11-28 03:24:32,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:31" (2/3) ... [2024-11-28 03:24:32,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d53445c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:24:32, skipping insertion in model container [2024-11-28 03:24:32,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:24:32" (3/3) ... [2024-11-28 03:24:32,930 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2024-11-28 03:24:32,944 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:24:32,945 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_42-trylock2_racefree.i that has 2 procedures, 106 locations, 1 initial locations, 13 loop locations, and 9 error locations. [2024-11-28 03:24:32,946 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:24:33,001 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-28 03:24:33,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 137 transitions, 281 flow [2024-11-28 03:24:33,161 INFO L124 PetriNetUnfolderBase]: 49/223 cut-off events. [2024-11-28 03:24:33,166 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 03:24:33,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 223 events. 49/223 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1076 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 132. Up to 6 conditions per place. [2024-11-28 03:24:33,177 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 137 transitions, 281 flow [2024-11-28 03:24:33,188 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 137 transitions, 281 flow [2024-11-28 03:24:33,199 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:24:33,215 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;@1deaf434, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:24:33,216 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-28 03:24:33,223 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:24:33,223 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 03:24:33,224 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:24:33,224 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:24:33,224 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:24:33,225 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-28 03:24:33,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:33,233 INFO L85 PathProgramCache]: Analyzing trace with hash 628293, now seen corresponding path program 1 times [2024-11-28 03:24:33,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:33,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004107199] [2024-11-28 03:24:33,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:24:33,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:24:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:24:33,545 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 03:24:33,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:24:33,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004107199] [2024-11-28 03:24:33,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004107199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:24:33,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:24:33,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:24:33,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386342395] [2024-11-28 03:24:33,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:24:33,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:24:33,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:24:33,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:24:33,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:24:33,627 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 137 [2024-11-28 03:24:33,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 137 transitions, 281 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 03:24:33,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:24:33,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 137 [2024-11-28 03:24:33,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:24:34,345 INFO L124 PetriNetUnfolderBase]: 632/1936 cut-off events. [2024-11-28 03:24:34,345 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 03:24:34,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3273 conditions, 1936 events. 632/1936 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 12438 event pairs, 578 based on Foata normal form. 513/2385 useless extension candidates. Maximal degree in co-relation 3158. Up to 1259 conditions per place. [2024-11-28 03:24:34,371 INFO L140 encePairwiseOnDemand]: 104/137 looper letters, 71 selfloop transitions, 2 changer transitions 1/119 dead transitions. [2024-11-28 03:24:34,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 119 transitions, 393 flow [2024-11-28 03:24:34,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:24:34,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:24:34,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 252 transitions. [2024-11-28 03:24:34,393 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6131386861313869 [2024-11-28 03:24:34,395 INFO L175 Difference]: Start difference. First operand has 109 places, 137 transitions, 281 flow. Second operand 3 states and 252 transitions. [2024-11-28 03:24:34,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 119 transitions, 393 flow [2024-11-28 03:24:34,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 119 transitions, 393 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:24:34,412 INFO L231 Difference]: Finished difference. Result has 105 places, 101 transitions, 213 flow [2024-11-28 03:24:34,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=105, PETRI_TRANSITIONS=101} [2024-11-28 03:24:34,421 INFO L279 CegarLoopForPetriNet]: 109 programPoint places, -4 predicate places. [2024-11-28 03:24:34,423 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 101 transitions, 213 flow [2024-11-28 03:24:34,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 03:24:34,424 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:24:34,424 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:24:34,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:24:34,425 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-28 03:24:34,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:34,426 INFO L85 PathProgramCache]: Analyzing trace with hash 628294, now seen corresponding path program 1 times [2024-11-28 03:24:34,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:34,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773564594] [2024-11-28 03:24:34,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:24:34,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:24:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:24:34,731 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 03:24:34,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:24:34,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773564594] [2024-11-28 03:24:34,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773564594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:24:34,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:24:34,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:24:34,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135396792] [2024-11-28 03:24:34,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:24:34,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:24:34,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:24:34,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:24:34,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:24:34,763 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 137 [2024-11-28 03:24:34,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 101 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 03:24:34,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:24:34,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 137 [2024-11-28 03:24:34,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:24:35,358 INFO L124 PetriNetUnfolderBase]: 596/1806 cut-off events. [2024-11-28 03:24:35,358 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 03:24:35,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3058 conditions, 1806 events. 596/1806 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 11314 event pairs, 561 based on Foata normal form. 1/1729 useless extension candidates. Maximal degree in co-relation 3031. Up to 1206 conditions per place. [2024-11-28 03:24:35,371 INFO L140 encePairwiseOnDemand]: 133/137 looper letters, 71 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2024-11-28 03:24:35,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 119 transitions, 395 flow [2024-11-28 03:24:35,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:24:35,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:24:35,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2024-11-28 03:24:35,374 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5328467153284672 [2024-11-28 03:24:35,374 INFO L175 Difference]: Start difference. First operand has 105 places, 101 transitions, 213 flow. Second operand 3 states and 219 transitions. [2024-11-28 03:24:35,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 119 transitions, 395 flow [2024-11-28 03:24:35,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 119 transitions, 391 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:24:35,384 INFO L231 Difference]: Finished difference. Result has 105 places, 101 transitions, 219 flow [2024-11-28 03:24:35,386 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=105, PETRI_TRANSITIONS=101} [2024-11-28 03:24:35,387 INFO L279 CegarLoopForPetriNet]: 109 programPoint places, -4 predicate places. [2024-11-28 03:24:35,388 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 101 transitions, 219 flow [2024-11-28 03:24:35,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 03:24:35,389 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:24:35,389 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 03:24:35,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:24:35,389 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-28 03:24:35,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:35,390 INFO L85 PathProgramCache]: Analyzing trace with hash 443278273, now seen corresponding path program 1 times [2024-11-28 03:24:35,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:35,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612646002] [2024-11-28 03:24:35,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:24:35,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:24:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:24:35,674 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 03:24:35,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:24:35,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612646002] [2024-11-28 03:24:35,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612646002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:24:35,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:24:35,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:24:35,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015521921] [2024-11-28 03:24:35,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:24:35,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:24:35,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:24:35,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:24:35,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:24:35,712 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 137 [2024-11-28 03:24:35,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 101 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 0 states have call successors, (0), 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 03:24:35,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:24:35,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 137 [2024-11-28 03:24:35,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:24:35,876 INFO L124 PetriNetUnfolderBase]: 51/188 cut-off events. [2024-11-28 03:24:35,878 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-11-28 03:24:35,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 188 events. 51/188 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 443 event pairs, 34 based on Foata normal form. 36/223 useless extension candidates. Maximal degree in co-relation 339. Up to 105 conditions per place. [2024-11-28 03:24:35,880 INFO L140 encePairwiseOnDemand]: 133/137 looper letters, 39 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-11-28 03:24:35,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 58 transitions, 208 flow [2024-11-28 03:24:35,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:24:35,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:24:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 231 transitions. [2024-11-28 03:24:35,883 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4215328467153285 [2024-11-28 03:24:35,884 INFO L175 Difference]: Start difference. First operand has 105 places, 101 transitions, 219 flow. Second operand 4 states and 231 transitions. [2024-11-28 03:24:35,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 58 transitions, 208 flow [2024-11-28 03:24:35,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 202 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 03:24:35,890 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 86 flow [2024-11-28 03:24:35,890 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-11-28 03:24:35,891 INFO L279 CegarLoopForPetriNet]: 109 programPoint places, -64 predicate places. [2024-11-28 03:24:35,891 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 86 flow [2024-11-28 03:24:35,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 0 states have call successors, (0), 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 03:24:35,891 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:24:35,892 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-28 03:24:35,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:24:35,892 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-28 03:24:35,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:35,892 INFO L85 PathProgramCache]: Analyzing trace with hash 856725264, now seen corresponding path program 1 times [2024-11-28 03:24:35,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:35,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036547250] [2024-11-28 03:24:35,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:24:35,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:24:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:24:35,931 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:24:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:24:35,989 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:24:35,990 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:24:35,991 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-28 03:24:35,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2024-11-28 03:24:35,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2024-11-28 03:24:35,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (6 of 10 remaining) [2024-11-28 03:24:35,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2024-11-28 03:24:35,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2024-11-28 03:24:35,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2024-11-28 03:24:35,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2024-11-28 03:24:35,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2024-11-28 03:24:35,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2024-11-28 03:24:35,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:24:35,996 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-28 03:24:36,001 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 03:24:36,002 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 03:24:36,063 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 03:24:36,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 184 transitions, 384 flow [2024-11-28 03:24:36,136 INFO L124 PetriNetUnfolderBase]: 81/368 cut-off events. [2024-11-28 03:24:36,136 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 03:24:36,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 368 events. 81/368 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2008 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 227. Up to 9 conditions per place. [2024-11-28 03:24:36,139 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 184 transitions, 384 flow [2024-11-28 03:24:36,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 184 transitions, 384 flow [2024-11-28 03:24:36,147 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:24:36,151 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;@1deaf434, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:24:36,151 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-28 03:24:36,154 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:24:36,154 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 03:24:36,154 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:24:36,154 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:24:36,155 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:24:36,158 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-28 03:24:36,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:36,159 INFO L85 PathProgramCache]: Analyzing trace with hash 811005, now seen corresponding path program 1 times [2024-11-28 03:24:36,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:36,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251174289] [2024-11-28 03:24:36,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:24:36,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:24:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:24:36,243 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 03:24:36,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:24:36,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251174289] [2024-11-28 03:24:36,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251174289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:24:36,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:24:36,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:24:36,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574213822] [2024-11-28 03:24:36,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:24:36,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:24:36,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:24:36,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:24:36,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:24:36,264 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 184 [2024-11-28 03:24:36,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 184 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 03:24:36,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:24:36,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 184 [2024-11-28 03:24:36,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:24:42,809 INFO L124 PetriNetUnfolderBase]: 23415/46871 cut-off events. [2024-11-28 03:24:42,809 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-11-28 03:24:42,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83170 conditions, 46871 events. 23415/46871 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 444333 event pairs, 21760 based on Foata normal form. 14736/60096 useless extension candidates. Maximal degree in co-relation 70699. Up to 34187 conditions per place. [2024-11-28 03:24:43,121 INFO L140 encePairwiseOnDemand]: 139/184 looper letters, 107 selfloop transitions, 2 changer transitions 1/171 dead transitions. [2024-11-28 03:24:43,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 171 transitions, 578 flow [2024-11-28 03:24:43,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:24:43,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:24:43,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2024-11-28 03:24:43,124 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2024-11-28 03:24:43,125 INFO L175 Difference]: Start difference. First operand has 145 places, 184 transitions, 384 flow. Second operand 3 states and 360 transitions. [2024-11-28 03:24:43,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 171 transitions, 578 flow [2024-11-28 03:24:43,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 171 transitions, 578 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:24:43,139 INFO L231 Difference]: Finished difference. Result has 141 places, 136 transitions, 292 flow [2024-11-28 03:24:43,142 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=141, PETRI_TRANSITIONS=136} [2024-11-28 03:24:43,143 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, -4 predicate places. [2024-11-28 03:24:43,144 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 136 transitions, 292 flow [2024-11-28 03:24:43,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 03:24:43,145 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:24:43,145 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:24:43,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:24:43,145 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-28 03:24:43,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:43,149 INFO L85 PathProgramCache]: Analyzing trace with hash 811006, now seen corresponding path program 1 times [2024-11-28 03:24:43,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:43,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522345377] [2024-11-28 03:24:43,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:24:43,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:24:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:24:43,302 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 03:24:43,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:24:43,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522345377] [2024-11-28 03:24:43,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522345377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:24:43,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:24:43,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:24:43,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848210053] [2024-11-28 03:24:43,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:24:43,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:24:43,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:24:43,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:24:43,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:24:43,325 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 184 [2024-11-28 03:24:43,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 136 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 03:24:43,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:24:43,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 184 [2024-11-28 03:24:43,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:24:47,100 INFO L124 PetriNetUnfolderBase]: 22121/45108 cut-off events. [2024-11-28 03:24:47,100 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2024-11-28 03:24:47,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79713 conditions, 45108 events. 22121/45108 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 431933 event pairs, 21079 based on Foata normal form. 1/43328 useless extension candidates. Maximal degree in co-relation 76969. Up to 34125 conditions per place. [2024-11-28 03:24:47,314 INFO L140 encePairwiseOnDemand]: 180/184 looper letters, 91 selfloop transitions, 2 changer transitions 0/155 dead transitions. [2024-11-28 03:24:47,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 155 transitions, 516 flow [2024-11-28 03:24:47,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:24:47,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:24:47,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2024-11-28 03:24:47,316 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.519927536231884 [2024-11-28 03:24:47,316 INFO L175 Difference]: Start difference. First operand has 141 places, 136 transitions, 292 flow. Second operand 3 states and 287 transitions. [2024-11-28 03:24:47,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 155 transitions, 516 flow [2024-11-28 03:24:47,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 155 transitions, 512 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:24:47,378 INFO L231 Difference]: Finished difference. Result has 141 places, 137 transitions, 302 flow [2024-11-28 03:24:47,380 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=141, PETRI_TRANSITIONS=137} [2024-11-28 03:24:47,381 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, -4 predicate places. [2024-11-28 03:24:47,381 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 137 transitions, 302 flow [2024-11-28 03:24:47,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 03:24:47,381 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:24:47,382 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 03:24:47,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:24:47,382 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-28 03:24:47,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:47,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1684927532, now seen corresponding path program 1 times [2024-11-28 03:24:47,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:47,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099501056] [2024-11-28 03:24:47,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:24:47,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:24:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:24:47,568 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 03:24:47,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:24:47,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099501056] [2024-11-28 03:24:47,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099501056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:24:47,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:24:47,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:24:47,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770175408] [2024-11-28 03:24:47,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:24:47,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:24:47,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:24:47,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:24:47,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:24:47,599 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 184 [2024-11-28 03:24:47,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 137 transitions, 302 flow. Second operand has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 0 states have call successors, (0), 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 03:24:47,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:24:47,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 184 [2024-11-28 03:24:47,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:24:51,490 INFO L124 PetriNetUnfolderBase]: 21592/42840 cut-off events. [2024-11-28 03:24:51,491 INFO L125 PetriNetUnfolderBase]: For 779/779 co-relation queries the response was YES. [2024-11-28 03:24:51,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76419 conditions, 42840 events. 21592/42840 cut-off events. For 779/779 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 411078 event pairs, 613 based on Foata normal form. 360/42453 useless extension candidates. Maximal degree in co-relation 4294. Up to 29231 conditions per place. [2024-11-28 03:24:51,666 INFO L140 encePairwiseOnDemand]: 179/184 looper letters, 158 selfloop transitions, 5 changer transitions 0/224 dead transitions. [2024-11-28 03:24:51,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 224 transitions, 800 flow [2024-11-28 03:24:51,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:24:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:24:51,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 480 transitions. [2024-11-28 03:24:51,668 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-11-28 03:24:51,668 INFO L175 Difference]: Start difference. First operand has 141 places, 137 transitions, 302 flow. Second operand 5 states and 480 transitions. [2024-11-28 03:24:51,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 224 transitions, 800 flow [2024-11-28 03:24:51,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 224 transitions, 798 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:24:51,674 INFO L231 Difference]: Finished difference. Result has 144 places, 137 transitions, 313 flow [2024-11-28 03:24:51,675 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=313, PETRI_PLACES=144, PETRI_TRANSITIONS=137} [2024-11-28 03:24:51,676 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, -1 predicate places. [2024-11-28 03:24:51,677 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 137 transitions, 313 flow [2024-11-28 03:24:51,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 0 states have call successors, (0), 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 03:24:51,679 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:24:51,679 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-28 03:24:51,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:24:51,679 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-28 03:24:51,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:51,680 INFO L85 PathProgramCache]: Analyzing trace with hash 894993661, now seen corresponding path program 1 times [2024-11-28 03:24:51,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:51,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373581112] [2024-11-28 03:24:51,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:24:51,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:24:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:24:51,707 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:24:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:24:51,737 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:24:51,741 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:24:51,741 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-28 03:24:51,741 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2024-11-28 03:24:51,741 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2024-11-28 03:24:51,741 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (6 of 10 remaining) [2024-11-28 03:24:51,741 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2024-11-28 03:24:51,741 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2024-11-28 03:24:51,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2024-11-28 03:24:51,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2024-11-28 03:24:51,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2024-11-28 03:24:51,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2024-11-28 03:24:51,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:24:51,742 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-28 03:24:51,742 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 03:24:51,743 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 03:24:51,793 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 03:24:51,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 231 transitions, 489 flow [2024-11-28 03:24:51,853 INFO L124 PetriNetUnfolderBase]: 116/534 cut-off events. [2024-11-28 03:24:51,856 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-28 03:24:51,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 534 events. 116/534 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3078 event pairs, 1 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 379. Up to 12 conditions per place. [2024-11-28 03:24:51,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 231 transitions, 489 flow [2024-11-28 03:24:51,867 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 231 transitions, 489 flow [2024-11-28 03:24:51,870 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:24:51,870 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;@1deaf434, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:24:51,873 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-28 03:24:51,875 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:24:51,875 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 03:24:51,875 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:24:51,875 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:24:51,875 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:24:51,875 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-28 03:24:51,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:51,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1040388, now seen corresponding path program 1 times [2024-11-28 03:24:51,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:51,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842990280] [2024-11-28 03:24:51,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:24:51,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:24:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:24:51,914 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 03:24:51,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:24:51,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842990280] [2024-11-28 03:24:51,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842990280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:24:51,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:24:51,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:24:51,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071205573] [2024-11-28 03:24:51,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:24:51,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:24:51,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:24:51,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:24:51,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:24:51,930 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 231 [2024-11-28 03:24:51,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 231 transitions, 489 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 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 03:24:51,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:24:51,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 231 [2024-11-28 03:24:51,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand