./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.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_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/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_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/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_c708abe5-df32-4d83-9931-5c2481dd8f13/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 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:23:06,299 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:23:06,384 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-27 23:23:06,390 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:23:06,391 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:23:06,446 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:23:06,447 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:23:06,447 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:23:06,448 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:23:06,451 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:23:06,451 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:23:06,451 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:23:06,452 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:23:06,452 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:23:06,452 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:23:06,452 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:23:06,452 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:23:06,452 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:23:06,453 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:23:06,453 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:23:06,453 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 23:23:06,453 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 23:23:06,453 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 23:23:06,453 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:23:06,453 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 23:23:06,453 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:23:06,453 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:23:06,454 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:23:06,454 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:23:06,454 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:23:06,454 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:23:06,454 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:23:06,454 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:23:06,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:23:06,456 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:23:06,457 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:23:06,458 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:23:06,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:23:06,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:23:06,458 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:23:06,458 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:23:06,458 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:23:06,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:23:06,459 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:23:06,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:23:06,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:23:06,459 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:23:06,459 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_c708abe5-df32-4d83-9931-5c2481dd8f13/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 -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 [2024-11-27 23:23:06,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:23:06,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:23:06,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:23:06,822 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:23:06,823 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:23:06,824 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2024-11-27 23:23:10,270 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/data/f113d9d6a/7d365356e6d64406b3e4c8b6254153b4/FLAGfd2261229 [2024-11-27 23:23:10,772 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:23:10,775 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2024-11-27 23:23:10,808 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/data/f113d9d6a/7d365356e6d64406b3e4c8b6254153b4/FLAGfd2261229 [2024-11-27 23:23:10,838 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/data/f113d9d6a/7d365356e6d64406b3e4c8b6254153b4 [2024-11-27 23:23:10,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:23:10,843 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:23:10,846 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:23:10,846 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:23:10,852 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:23:10,852 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:23:10" (1/1) ... [2024-11-27 23:23:10,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b95edfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:10, skipping insertion in model container [2024-11-27 23:23:10,856 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:23:10" (1/1) ... [2024-11-27 23:23:10,926 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:23:11,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:23:11,572 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:23:11,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:23:11,731 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:23:11,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:11 WrapperNode [2024-11-27 23:23:11,732 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:23:11,733 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:23:11,733 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:23:11,734 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:23:11,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:11" (1/1) ... [2024-11-27 23:23:11,760 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:11" (1/1) ... [2024-11-27 23:23:11,792 INFO L138 Inliner]: procedures = 243, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 262 [2024-11-27 23:23:11,792 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:23:11,793 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:23:11,793 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:23:11,793 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:23:11,805 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:11" (1/1) ... [2024-11-27 23:23:11,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:11" (1/1) ... [2024-11-27 23:23:11,811 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:11" (1/1) ... [2024-11-27 23:23:11,829 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 1, 8]. 73 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 1, 8]. The 0 writes are split as follows [0, 0, 0]. [2024-11-27 23:23:11,829 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:11" (1/1) ... [2024-11-27 23:23:11,829 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:11" (1/1) ... [2024-11-27 23:23:11,842 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:11" (1/1) ... [2024-11-27 23:23:11,844 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:11" (1/1) ... [2024-11-27 23:23:11,848 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:11" (1/1) ... [2024-11-27 23:23:11,850 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:11" (1/1) ... [2024-11-27 23:23:11,852 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:11" (1/1) ... [2024-11-27 23:23:11,856 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:23:11,857 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:23:11,858 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:23:11,858 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:23:11,859 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:11" (1/1) ... [2024-11-27 23:23:11,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:23:11,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:11,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:23:11,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:23:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-27 23:23:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-27 23:23:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-27 23:23:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-27 23:23:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 23:23:11,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 23:23:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 23:23:11,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 23:23:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-27 23:23:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:23:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:23:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 23:23:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 23:23:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:23:11,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:23:11,943 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 23:23:12,182 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:23:12,185 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:23:12,858 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 23:23:12,858 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:23:14,620 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:23:14,622 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 23:23:14,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:23:14 BoogieIcfgContainer [2024-11-27 23:23:14,622 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:23:14,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:23:14,626 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:23:14,632 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:23:14,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:23:10" (1/3) ... [2024-11-27 23:23:14,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c8b455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:23:14, skipping insertion in model container [2024-11-27 23:23:14,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:11" (2/3) ... [2024-11-27 23:23:14,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c8b455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:23:14, skipping insertion in model container [2024-11-27 23:23:14,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:23:14" (3/3) ... [2024-11-27 23:23:14,638 INFO L128 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2024-11-27 23:23:14,656 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:23:14,658 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG arithmetic_prog_bad.i that has 3 procedures, 37 locations, 1 initial locations, 4 loop locations, and 2 error locations. [2024-11-27 23:23:14,658 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 23:23:14,742 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-27 23:23:14,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 43 transitions, 100 flow [2024-11-27 23:23:14,915 INFO L124 PetriNetUnfolderBase]: 7/41 cut-off events. [2024-11-27 23:23:14,921 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 23:23:14,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 41 events. 7/41 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2024-11-27 23:23:14,927 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 43 transitions, 100 flow [2024-11-27 23:23:14,934 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 40 transitions, 92 flow [2024-11-27 23:23:14,953 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:23:14,977 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;@70120bca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:23:14,977 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-27 23:23:15,039 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:23:15,039 INFO L124 PetriNetUnfolderBase]: 7/38 cut-off events. [2024-11-27 23:23:15,040 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 23:23:15,040 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:15,041 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:15,041 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 23:23:15,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:15,051 INFO L85 PathProgramCache]: Analyzing trace with hash -2042778269, now seen corresponding path program 1 times [2024-11-27 23:23:15,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:15,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278943040] [2024-11-27 23:23:15,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:15,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:16,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:16,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:16,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278943040] [2024-11-27 23:23:16,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278943040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:16,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:16,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:23:16,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30343540] [2024-11-27 23:23:16,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:16,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:23:16,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:16,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:23:16,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:23:16,509 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2024-11-27 23:23:16,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-11-27 23:23:16,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:16,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2024-11-27 23:23:16,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:16,900 INFO L124 PetriNetUnfolderBase]: 441/787 cut-off events. [2024-11-27 23:23:16,901 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-27 23:23:16,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1508 conditions, 787 events. 441/787 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3659 event pairs, 173 based on Foata normal form. 20/778 useless extension candidates. Maximal degree in co-relation 1442. Up to 419 conditions per place. [2024-11-27 23:23:16,916 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 39 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-11-27 23:23:16,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 205 flow [2024-11-27 23:23:16,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:23:16,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:23:16,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-27 23:23:16,933 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.689922480620155 [2024-11-27 23:23:16,936 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 92 flow. Second operand 3 states and 89 transitions. [2024-11-27 23:23:16,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 205 flow [2024-11-27 23:23:16,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 195 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 23:23:16,946 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 90 flow [2024-11-27 23:23:16,949 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2024-11-27 23:23:16,954 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-27 23:23:16,954 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 90 flow [2024-11-27 23:23:16,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-11-27 23:23:16,955 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:16,955 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:16,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:23:16,956 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 23:23:16,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:16,956 INFO L85 PathProgramCache]: Analyzing trace with hash 168960509, now seen corresponding path program 1 times [2024-11-27 23:23:16,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:16,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687275837] [2024-11-27 23:23:16,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:16,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:17,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:23:17,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:17,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687275837] [2024-11-27 23:23:17,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687275837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:17,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:17,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:23:17,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100567243] [2024-11-27 23:23:17,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:17,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:23:17,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:17,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:23:17,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:23:17,613 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2024-11-27 23:23:17,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-27 23:23:17,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:17,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2024-11-27 23:23:17,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:18,047 INFO L124 PetriNetUnfolderBase]: 742/1327 cut-off events. [2024-11-27 23:23:18,047 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-11-27 23:23:18,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2615 conditions, 1327 events. 742/1327 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 6759 event pairs, 300 based on Foata normal form. 29/1324 useless extension candidates. Maximal degree in co-relation 964. Up to 697 conditions per place. [2024-11-27 23:23:18,069 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 40 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-11-27 23:23:18,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 55 transitions, 219 flow [2024-11-27 23:23:18,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:23:18,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:23:18,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-11-27 23:23:18,073 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-27 23:23:18,073 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 90 flow. Second operand 3 states and 86 transitions. [2024-11-27 23:23:18,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 55 transitions, 219 flow [2024-11-27 23:23:18,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:23:18,078 INFO L231 Difference]: Finished difference. Result has 40 places, 39 transitions, 100 flow [2024-11-27 23:23:18,079 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=40, PETRI_TRANSITIONS=39} [2024-11-27 23:23:18,080 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2024-11-27 23:23:18,081 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 39 transitions, 100 flow [2024-11-27 23:23:18,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-27 23:23:18,081 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:18,081 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:18,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:23:18,082 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 23:23:18,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:18,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1434514937, now seen corresponding path program 1 times [2024-11-27 23:23:18,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:18,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066091893] [2024-11-27 23:23:18,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:18,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:18,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:18,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066091893] [2024-11-27 23:23:18,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066091893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:18,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:18,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:23:18,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319166136] [2024-11-27 23:23:18,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:18,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:23:18,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:18,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:23:18,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:23:18,955 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2024-11-27 23:23:18,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-11-27 23:23:18,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:18,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2024-11-27 23:23:18,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:19,257 INFO L124 PetriNetUnfolderBase]: 428/900 cut-off events. [2024-11-27 23:23:19,257 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2024-11-27 23:23:19,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1869 conditions, 900 events. 428/900 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4320 event pairs, 182 based on Foata normal form. 64/958 useless extension candidates. Maximal degree in co-relation 629. Up to 373 conditions per place. [2024-11-27 23:23:19,265 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 30 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2024-11-27 23:23:19,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 51 transitions, 220 flow [2024-11-27 23:23:19,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:23:19,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:23:19,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-11-27 23:23:19,270 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2024-11-27 23:23:19,271 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 100 flow. Second operand 3 states and 83 transitions. [2024-11-27 23:23:19,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 51 transitions, 220 flow [2024-11-27 23:23:19,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 51 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:23:19,275 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 114 flow [2024-11-27 23:23:19,277 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2024-11-27 23:23:19,278 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-11-27 23:23:19,279 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 114 flow [2024-11-27 23:23:19,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-11-27 23:23:19,279 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:19,279 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:19,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:23:19,280 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 23:23:19,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:19,281 INFO L85 PathProgramCache]: Analyzing trace with hash -388229481, now seen corresponding path program 2 times [2024-11-27 23:23:19,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:19,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870533303] [2024-11-27 23:23:19,282 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:23:19,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:19,674 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:23:19,674 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:19,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:19,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:19,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870533303] [2024-11-27 23:23:19,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870533303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:19,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:19,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:23:19,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674627277] [2024-11-27 23:23:19,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:19,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:23:19,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:19,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:23:19,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:23:19,860 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2024-11-27 23:23:19,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-27 23:23:19,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:19,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2024-11-27 23:23:19,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:20,249 INFO L124 PetriNetUnfolderBase]: 629/1307 cut-off events. [2024-11-27 23:23:20,250 INFO L125 PetriNetUnfolderBase]: For 452/452 co-relation queries the response was YES. [2024-11-27 23:23:20,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3086 conditions, 1307 events. 629/1307 cut-off events. For 452/452 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6878 event pairs, 184 based on Foata normal form. 30/1318 useless extension candidates. Maximal degree in co-relation 781. Up to 483 conditions per place. [2024-11-27 23:23:20,262 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 58 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2024-11-27 23:23:20,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 74 transitions, 358 flow [2024-11-27 23:23:20,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:23:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:23:20,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-11-27 23:23:20,264 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6918604651162791 [2024-11-27 23:23:20,264 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 114 flow. Second operand 4 states and 119 transitions. [2024-11-27 23:23:20,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 74 transitions, 358 flow [2024-11-27 23:23:20,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 74 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:23:20,272 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 122 flow [2024-11-27 23:23:20,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2024-11-27 23:23:20,273 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2024-11-27 23:23:20,274 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 122 flow [2024-11-27 23:23:20,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-27 23:23:20,275 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:20,275 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:20,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:23:20,275 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 23:23:20,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:20,276 INFO L85 PathProgramCache]: Analyzing trace with hash -806236711, now seen corresponding path program 3 times [2024-11-27 23:23:20,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:20,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064606918] [2024-11-27 23:23:20,277 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:23:20,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:20,716 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 23:23:20,716 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:20,843 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 23:23:20,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:20,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064606918] [2024-11-27 23:23:20,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064606918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:20,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:20,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:23:20,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746492810] [2024-11-27 23:23:20,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:20,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:23:20,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:20,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:23:20,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:23:20,855 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2024-11-27 23:23:20,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-27 23:23:20,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:20,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2024-11-27 23:23:20,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:21,276 INFO L124 PetriNetUnfolderBase]: 849/1796 cut-off events. [2024-11-27 23:23:21,277 INFO L125 PetriNetUnfolderBase]: For 834/834 co-relation queries the response was YES. [2024-11-27 23:23:21,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4138 conditions, 1796 events. 849/1796 cut-off events. For 834/834 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 9901 event pairs, 258 based on Foata normal form. 41/1814 useless extension candidates. Maximal degree in co-relation 1304. Up to 667 conditions per place. [2024-11-27 23:23:21,290 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 59 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-11-27 23:23:21,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 75 transitions, 380 flow [2024-11-27 23:23:21,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:23:21,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:23:21,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-11-27 23:23:21,293 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6802325581395349 [2024-11-27 23:23:21,294 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 122 flow. Second operand 4 states and 117 transitions. [2024-11-27 23:23:21,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 75 transitions, 380 flow [2024-11-27 23:23:21,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 75 transitions, 362 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-27 23:23:21,299 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 132 flow [2024-11-27 23:23:21,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-11-27 23:23:21,302 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-11-27 23:23:21,304 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 132 flow [2024-11-27 23:23:21,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-27 23:23:21,305 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:21,305 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:21,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:23:21,305 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 23:23:21,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:21,306 INFO L85 PathProgramCache]: Analyzing trace with hash 613776347, now seen corresponding path program 4 times [2024-11-27 23:23:21,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:21,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873393743] [2024-11-27 23:23:21,306 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:23:21,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:21,749 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:23:21,749 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:23:21,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:21,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873393743] [2024-11-27 23:23:21,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873393743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:21,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:21,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:23:21,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284841484] [2024-11-27 23:23:21,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:21,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:23:21,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:21,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:23:21,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:23:21,814 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-27 23:23:21,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-27 23:23:21,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:21,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-27 23:23:21,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:22,186 INFO L124 PetriNetUnfolderBase]: 877/1811 cut-off events. [2024-11-27 23:23:22,186 INFO L125 PetriNetUnfolderBase]: For 868/868 co-relation queries the response was YES. [2024-11-27 23:23:22,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4331 conditions, 1811 events. 877/1811 cut-off events. For 868/868 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 9899 event pairs, 568 based on Foata normal form. 1/1780 useless extension candidates. Maximal degree in co-relation 1543. Up to 1360 conditions per place. [2024-11-27 23:23:22,200 INFO L140 encePairwiseOnDemand]: 41/43 looper letters, 39 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2024-11-27 23:23:22,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 255 flow [2024-11-27 23:23:22,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:23:22,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:23:22,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-27 23:23:22,202 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5968992248062015 [2024-11-27 23:23:22,202 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 132 flow. Second operand 3 states and 77 transitions. [2024-11-27 23:23:22,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 255 flow [2024-11-27 23:23:22,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 52 transitions, 249 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-27 23:23:22,207 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 126 flow [2024-11-27 23:23:22,207 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2024-11-27 23:23:22,208 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-11-27 23:23:22,208 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 126 flow [2024-11-27 23:23:22,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-27 23:23:22,209 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:22,209 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:22,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:23:22,209 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 23:23:22,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:22,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1623449456, now seen corresponding path program 1 times [2024-11-27 23:23:22,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:22,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587689604] [2024-11-27 23:23:22,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:22,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:22,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 23:23:22,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:22,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587689604] [2024-11-27 23:23:22,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587689604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:22,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:22,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 23:23:22,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129252643] [2024-11-27 23:23:22,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:22,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:23:22,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:22,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:23:22,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:23:22,657 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-27 23:23:22,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-27 23:23:22,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:22,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-27 23:23:22,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:22,949 INFO L124 PetriNetUnfolderBase]: 877/1810 cut-off events. [2024-11-27 23:23:22,949 INFO L125 PetriNetUnfolderBase]: For 703/703 co-relation queries the response was YES. [2024-11-27 23:23:22,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4264 conditions, 1810 events. 877/1810 cut-off events. For 703/703 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 9878 event pairs, 627 based on Foata normal form. 1/1779 useless extension candidates. Maximal degree in co-relation 3862. Up to 1475 conditions per place. [2024-11-27 23:23:22,962 INFO L140 encePairwiseOnDemand]: 41/43 looper letters, 27 selfloop transitions, 1 changer transitions 2/39 dead transitions. [2024-11-27 23:23:22,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 180 flow [2024-11-27 23:23:22,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:23:22,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:23:22,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-11-27 23:23:22,966 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5193798449612403 [2024-11-27 23:23:22,966 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 126 flow. Second operand 3 states and 67 transitions. [2024-11-27 23:23:22,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 180 flow [2024-11-27 23:23:22,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:23:22,974 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 121 flow [2024-11-27 23:23:22,975 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-11-27 23:23:22,975 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-11-27 23:23:22,975 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 121 flow [2024-11-27 23:23:22,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-27 23:23:22,976 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:22,976 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:22,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:23:22,976 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 23:23:22,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:22,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1508359541, now seen corresponding path program 1 times [2024-11-27 23:23:22,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:22,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063896435] [2024-11-27 23:23:22,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:22,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:23,621 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:23:23,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:23,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063896435] [2024-11-27 23:23:23,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063896435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:23,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215962096] [2024-11-27 23:23:23,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:23,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:23,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:23,629 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:23,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:23:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:24,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:23:24,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:23:24,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:24,588 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:23:24,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215962096] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:23:24,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:23:24,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-11-27 23:23:24,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060074717] [2024-11-27 23:23:24,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:24,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:23:24,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:24,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:23:24,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:23:24,597 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-27 23:23:24,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 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) [2024-11-27 23:23:24,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:24,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-27 23:23:24,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:25,129 INFO L124 PetriNetUnfolderBase]: 1123/2188 cut-off events. [2024-11-27 23:23:25,129 INFO L125 PetriNetUnfolderBase]: For 810/810 co-relation queries the response was YES. [2024-11-27 23:23:25,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5142 conditions, 2188 events. 1123/2188 cut-off events. For 810/810 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 11574 event pairs, 185 based on Foata normal form. 42/2214 useless extension candidates. Maximal degree in co-relation 5131. Up to 547 conditions per place. [2024-11-27 23:23:25,146 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 76 selfloop transitions, 5 changer transitions 0/89 dead transitions. [2024-11-27 23:23:25,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 89 transitions, 461 flow [2024-11-27 23:23:25,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:23:25,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:23:25,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2024-11-27 23:23:25,148 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6697674418604651 [2024-11-27 23:23:25,148 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 121 flow. Second operand 5 states and 144 transitions. [2024-11-27 23:23:25,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 89 transitions, 461 flow [2024-11-27 23:23:25,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 89 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:23:25,152 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 142 flow [2024-11-27 23:23:25,152 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2024-11-27 23:23:25,153 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-11-27 23:23:25,153 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 142 flow [2024-11-27 23:23:25,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 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) [2024-11-27 23:23:25,154 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:25,154 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:25,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:23:25,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-27 23:23:25,355 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 23:23:25,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:25,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1412154811, now seen corresponding path program 2 times [2024-11-27 23:23:25,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:25,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598459671] [2024-11-27 23:23:25,357 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:23:25,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:25,933 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:23:25,933 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:26,084 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 23:23:26,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:26,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598459671] [2024-11-27 23:23:26,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598459671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:26,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265660579] [2024-11-27 23:23:26,085 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:23:26,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:26,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:26,088 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:26,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:23:26,912 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:23:26,912 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:26,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:23:26,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:27,008 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 23:23:27,008 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:27,099 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 23:23:27,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265660579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:23:27,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:23:27,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-11-27 23:23:27,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646888297] [2024-11-27 23:23:27,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:27,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:23:27,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:27,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:23:27,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:23:27,106 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-27 23:23:27,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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) [2024-11-27 23:23:27,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:27,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-27 23:23:27,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:27,610 INFO L124 PetriNetUnfolderBase]: 1159/2258 cut-off events. [2024-11-27 23:23:27,610 INFO L125 PetriNetUnfolderBase]: For 1679/1679 co-relation queries the response was YES. [2024-11-27 23:23:27,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5635 conditions, 2258 events. 1159/2258 cut-off events. For 1679/1679 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 12037 event pairs, 165 based on Foata normal form. 43/2287 useless extension candidates. Maximal degree in co-relation 5623. Up to 554 conditions per place. [2024-11-27 23:23:27,626 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 73 selfloop transitions, 5 changer transitions 0/87 dead transitions. [2024-11-27 23:23:27,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 87 transitions, 509 flow [2024-11-27 23:23:27,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:23:27,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:23:27,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2024-11-27 23:23:27,630 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6558139534883721 [2024-11-27 23:23:27,631 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 142 flow. Second operand 5 states and 141 transitions. [2024-11-27 23:23:27,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 87 transitions, 509 flow [2024-11-27 23:23:27,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 87 transitions, 477 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-27 23:23:27,636 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 156 flow [2024-11-27 23:23:27,636 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2024-11-27 23:23:27,640 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 13 predicate places. [2024-11-27 23:23:27,640 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 156 flow [2024-11-27 23:23:27,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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) [2024-11-27 23:23:27,640 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:27,642 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:27,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 23:23:27,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:27,847 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 23:23:27,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:27,848 INFO L85 PathProgramCache]: Analyzing trace with hash 540535189, now seen corresponding path program 3 times [2024-11-27 23:23:27,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:27,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630505291] [2024-11-27 23:23:27,849 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:23:27,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:28,282 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-27 23:23:28,283 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:28,749 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 23:23:28,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:28,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630505291] [2024-11-27 23:23:28,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630505291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:28,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72783633] [2024-11-27 23:23:28,750 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:23:28,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:28,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:28,753 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:28,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:23:29,531 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-27 23:23:29,531 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:29,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:23:29,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 23:23:29,586 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 23:23:29,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72783633] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:23:29,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:23:29,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2024-11-27 23:23:29,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606064328] [2024-11-27 23:23:29,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:29,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:23:29,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:29,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:23:29,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:23:29,653 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-27 23:23:29,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2024-11-27 23:23:29,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:29,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-27 23:23:29,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:29,972 INFO L124 PetriNetUnfolderBase]: 448/983 cut-off events. [2024-11-27 23:23:29,973 INFO L125 PetriNetUnfolderBase]: For 997/999 co-relation queries the response was YES. [2024-11-27 23:23:29,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2660 conditions, 983 events. 448/983 cut-off events. For 997/999 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4024 event pairs, 123 based on Foata normal form. 0/977 useless extension candidates. Maximal degree in co-relation 2646. Up to 436 conditions per place. [2024-11-27 23:23:29,982 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 46 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2024-11-27 23:23:29,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 348 flow [2024-11-27 23:23:29,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:23:29,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:23:29,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-11-27 23:23:29,985 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.563953488372093 [2024-11-27 23:23:29,985 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 156 flow. Second operand 4 states and 97 transitions. [2024-11-27 23:23:29,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 348 flow [2024-11-27 23:23:29,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 332 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-27 23:23:29,992 INFO L231 Difference]: Finished difference. Result has 56 places, 39 transitions, 163 flow [2024-11-27 23:23:29,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=56, PETRI_TRANSITIONS=39} [2024-11-27 23:23:29,993 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 16 predicate places. [2024-11-27 23:23:29,993 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 39 transitions, 163 flow [2024-11-27 23:23:29,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2024-11-27 23:23:29,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:29,993 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:30,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 23:23:30,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 23:23:30,194 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 23:23:30,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:30,196 INFO L85 PathProgramCache]: Analyzing trace with hash -39786151, now seen corresponding path program 4 times [2024-11-27 23:23:30,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:30,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731845933] [2024-11-27 23:23:30,196 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:23:30,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:30,599 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:23:30,599 INFO L230 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-27 23:23:30,600 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:23:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:23:30,715 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 23:23:30,715 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 23:23:30,717 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2024-11-27 23:23:30,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-27 23:23:30,723 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-27 23:23:30,724 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-27 23:23:30,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 23:23:30,724 INFO L422 BasicCegarLoop]: Path program histogram: [4, 4, 1, 1, 1] [2024-11-27 23:23:30,855 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-27 23:23:30,855 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 23:23:30,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:23:30 BasicIcfg [2024-11-27 23:23:30,866 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 23:23:30,867 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 23:23:30,867 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 23:23:30,868 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 23:23:30,868 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:23:14" (3/4) ... [2024-11-27 23:23:30,871 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-27 23:23:30,872 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 23:23:30,873 INFO L158 Benchmark]: Toolchain (without parser) took 20030.03ms. Allocated memory was 117.4MB in the beginning and 520.1MB in the end (delta: 402.7MB). Free memory was 91.2MB in the beginning and 387.2MB in the end (delta: -296.0MB). Peak memory consumption was 107.8MB. Max. memory is 16.1GB. [2024-11-27 23:23:30,873 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:23:30,873 INFO L158 Benchmark]: CACSL2BoogieTranslator took 886.60ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 63.1MB in the end (delta: 27.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-27 23:23:30,874 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.32ms. Allocated memory is still 117.4MB. Free memory was 63.1MB in the beginning and 60.3MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:23:30,875 INFO L158 Benchmark]: Boogie Preprocessor took 63.61ms. Allocated memory is still 117.4MB. Free memory was 60.3MB in the beginning and 57.2MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:23:30,875 INFO L158 Benchmark]: RCFGBuilder took 2765.24ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 57.0MB in the beginning and 186.7MB in the end (delta: -129.7MB). Peak memory consumption was 50.5MB. Max. memory is 16.1GB. [2024-11-27 23:23:30,876 INFO L158 Benchmark]: TraceAbstraction took 16240.94ms. Allocated memory was 234.9MB in the beginning and 520.1MB in the end (delta: 285.2MB). Free memory was 185.8MB in the beginning and 387.3MB in the end (delta: -201.5MB). Peak memory consumption was 82.5MB. Max. memory is 16.1GB. [2024-11-27 23:23:30,877 INFO L158 Benchmark]: Witness Printer took 4.53ms. Allocated memory is still 520.1MB. Free memory was 387.3MB in the beginning and 387.2MB in the end (delta: 70.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:23:30,878 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 886.60ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 63.1MB in the end (delta: 27.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.32ms. Allocated memory is still 117.4MB. Free memory was 63.1MB in the beginning and 60.3MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.61ms. Allocated memory is still 117.4MB. Free memory was 60.3MB in the beginning and 57.2MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2765.24ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 57.0MB in the beginning and 186.7MB in the end (delta: -129.7MB). Peak memory consumption was 50.5MB. Max. memory is 16.1GB. * TraceAbstraction took 16240.94ms. Allocated memory was 234.9MB in the beginning and 520.1MB in the end (delta: 285.2MB). Free memory was 185.8MB in the beginning and 387.3MB in the end (delta: -201.5MB). Peak memory consumption was 82.5MB. Max. memory is 16.1GB. * Witness Printer took 4.53ms. Allocated memory is still 520.1MB. Free memory was 387.3MB in the beginning and 387.2MB in the end (delta: 70.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L870] 0 int num; [L871] 0 unsigned long total; [L872] 0 int flag; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L874] 0 pthread_cond_t empty, full; [L907] 0 pthread_t t1, t2; [L908] 0 num = 0 [L909] 0 total = 0 [L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [\old(arg)={0:0}, flag=0, m={3:0}, num=0, t1=-2, total=0] [L876] 1 int i; [L877] 1 i = 0 VAL [\old(arg)={0:0}, arg={0:0}, flag=0, i=0, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 VAL [\old(arg)={0:0}, arg={0:0}, flag=0, i=0, m={3:0}, num=0, total=0] [L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, flag=0, i=0, m={3:0}, num=0, t1=-2, t2=-1, total=0] [L890] 2 int j; [L891] 2 j = 0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=0, j=0, m={3:0}, num=0, total=0] [L880] COND FALSE 1 !(num > 0) [L882] 1 num++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=0, j=0, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=1, j=0, m={3:0}, num=1, total=0] [L878] COND TRUE 1 i < 3 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=1, j=0, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=1, j=0, m={3:0}, num=1, total=0] [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j [L897] 2 num-- VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=1, j=0, m={3:0}, num=0, total=0] [L900] 2 j++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=1, j=1, m={3:0}, num=0, total=0] [L880] COND FALSE 1 !(num > 0) [L882] 1 num++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=1, j=1, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=1, j=1, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=2, j=1, m={3:0}, num=1, total=0] [L878] COND TRUE 1 i < 3 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=2, j=1, m={3:0}, num=1, total=0] [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j [L897] 2 num-- VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=2, j=1, m={3:0}, num=0, total=1] [L900] 2 j++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=2, j=2, m={3:0}, num=0, total=1] [L892] COND TRUE 2 j < 3 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=2, j=2, m={3:0}, num=0, total=1] [L880] COND FALSE 1 !(num > 0) [L882] 1 num++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=2, j=2, m={3:0}, num=1, total=1] [L885] 1 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=3, j=2, m={3:0}, num=1, total=1] [L878] COND FALSE 1 !(i < 3) [L887] 1 return ((void *)0); [L915] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, flag=0, i=3, j=2, m={3:0}, num=1, t1=-2, t2=-1, total=1] [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j [L897] 2 num-- VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, flag=0, i=3, j=2, m={3:0}, num=0, total=3] [L900] 2 j++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, flag=0, i=3, j=3, m={3:0}, num=0, total=3] [L892] COND FALSE 2 !(j < 3) [L902] 2 total = total + j [L903] 2 flag = 1 [L904] 2 return ((void *)0); [L916] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, flag=1, i=3, j=3, m={3:0}, num=0, t1=-2, t2=-1, total=6] [L917] COND TRUE 0 \read(flag) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, flag=1, i=3, j=3, m={3:0}, num=0, t1=-2, t2=-1, total=6] [L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2)) [L919] CALL 0 reach_error() [L18] COND FALSE 0 !(0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, flag=1, i=3, j=3, m={3:0}, num=0, total=6] [L18] 0 __assert_fail ("0", "", 0, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, flag=1, i=3, j=3, m={3:0}, num=0, total=6] - UnprovableResult [Line: 906]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 913]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 914]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 59 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.9s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 245 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 231 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 760 IncrementalHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 2 mSDtfsCounter, 760 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 302 GetRequests, 273 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=163occurred in iteration=10, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 516 NumberOfCodeBlocks, 503 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 584 ConstructedInterpolants, 0 QuantifiedInterpolants, 1286 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1409 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 16 InterpolantComputations, 7 PerfectInterpolantSequences, 155/214 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-27 23:23:30,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/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_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/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 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:23:34,291 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:23:34,430 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-27 23:23:34,438 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:23:34,438 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:23:34,470 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:23:34,471 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:23:34,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:23:34,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:23:34,472 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:23:34,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:23:34,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:23:34,473 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:23:34,473 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:23:34,473 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:23:34,473 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:23:34,473 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:23:34,474 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:23:34,474 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:23:34,474 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:23:34,474 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 23:23:34,474 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 23:23:34,475 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 23:23:34,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:23:34,475 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 23:23:34,475 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-27 23:23:34,475 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-27 23:23:34,475 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:23:34,475 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:23:34,476 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:23:34,476 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:23:34,476 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:23:34,476 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:23:34,476 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:23:34,477 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:23:34,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:23:34,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:23:34,477 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:23:34,477 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:23:34,477 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:23:34,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:23:34,478 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:23:34,478 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:23:34,478 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-27 23:23:34,478 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-27 23:23:34,478 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:23:34,478 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:23:34,478 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:23:34,479 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:23:34,479 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_c708abe5-df32-4d83-9931-5c2481dd8f13/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 -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 [2024-11-27 23:23:34,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:23:34,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:23:34,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:23:34,930 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:23:34,931 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:23:34,932 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2024-11-27 23:23:38,577 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/data/5aaaf6288/799d89a499794d40b770e783426ee1e7/FLAG9dfd1511b [2024-11-27 23:23:39,000 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:23:39,001 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2024-11-27 23:23:39,027 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/data/5aaaf6288/799d89a499794d40b770e783426ee1e7/FLAG9dfd1511b [2024-11-27 23:23:39,059 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/data/5aaaf6288/799d89a499794d40b770e783426ee1e7 [2024-11-27 23:23:39,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:23:39,066 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:23:39,068 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:23:39,069 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:23:39,075 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:23:39,076 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:23:39" (1/1) ... [2024-11-27 23:23:39,077 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72fef4a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:39, skipping insertion in model container [2024-11-27 23:23:39,077 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:23:39" (1/1) ... [2024-11-27 23:23:39,145 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:23:39,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:23:39,764 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:23:39,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:23:39,925 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:23:39,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:39 WrapperNode [2024-11-27 23:23:39,926 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:23:39,928 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:23:39,928 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:23:39,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:23:39,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:39" (1/1) ... [2024-11-27 23:23:39,963 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:39" (1/1) ... [2024-11-27 23:23:40,007 INFO L138 Inliner]: procedures = 250, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 263 [2024-11-27 23:23:40,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:23:40,008 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:23:40,008 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:23:40,008 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:23:40,020 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:39" (1/1) ... [2024-11-27 23:23:40,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:39" (1/1) ... [2024-11-27 23:23:40,028 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:39" (1/1) ... [2024-11-27 23:23:40,050 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 1, 8]. 73 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 1, 8]. The 0 writes are split as follows [0, 0, 0]. [2024-11-27 23:23:40,051 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:39" (1/1) ... [2024-11-27 23:23:40,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:39" (1/1) ... [2024-11-27 23:23:40,072 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:39" (1/1) ... [2024-11-27 23:23:40,081 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:39" (1/1) ... [2024-11-27 23:23:40,088 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:39" (1/1) ... [2024-11-27 23:23:40,091 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:39" (1/1) ... [2024-11-27 23:23:40,093 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:39" (1/1) ... [2024-11-27 23:23:40,099 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:23:40,100 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:23:40,100 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:23:40,100 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:23:40,102 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:39" (1/1) ... [2024-11-27 23:23:40,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:23:40,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:40,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:23:40,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:23:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-27 23:23:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-27 23:23:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-27 23:23:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2024-11-27 23:23:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2024-11-27 23:23:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2024-11-27 23:23:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-27 23:23:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-27 23:23:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-27 23:23:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-27 23:23:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-27 23:23:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-27 23:23:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-27 23:23:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 23:23:40,230 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 23:23:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 23:23:40,231 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 23:23:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-27 23:23:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:23:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:23:40,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:23:40,234 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 23:23:40,472 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:23:40,475 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:23:41,190 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 23:23:41,190 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:23:43,307 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:23:43,309 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 23:23:43,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:23:43 BoogieIcfgContainer [2024-11-27 23:23:43,309 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:23:43,313 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:23:43,314 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:23:43,321 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:23:43,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:23:39" (1/3) ... [2024-11-27 23:23:43,322 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a85443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:23:43, skipping insertion in model container [2024-11-27 23:23:43,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:39" (2/3) ... [2024-11-27 23:23:43,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a85443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:23:43, skipping insertion in model container [2024-11-27 23:23:43,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:23:43" (3/3) ... [2024-11-27 23:23:43,326 INFO L128 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2024-11-27 23:23:43,348 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:23:43,350 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG arithmetic_prog_bad.i that has 3 procedures, 37 locations, 1 initial locations, 4 loop locations, and 2 error locations. [2024-11-27 23:23:43,351 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 23:23:43,449 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-27 23:23:43,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 43 transitions, 100 flow [2024-11-27 23:23:43,590 INFO L124 PetriNetUnfolderBase]: 7/41 cut-off events. [2024-11-27 23:23:43,594 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 23:23:43,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 41 events. 7/41 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2024-11-27 23:23:43,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 43 transitions, 100 flow [2024-11-27 23:23:43,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 40 transitions, 92 flow [2024-11-27 23:23:43,626 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:23:43,649 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;@2c0277f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:23:43,649 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-27 23:23:43,701 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:23:43,701 INFO L124 PetriNetUnfolderBase]: 7/38 cut-off events. [2024-11-27 23:23:43,701 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 23:23:43,701 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:43,702 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:43,703 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 23:23:43,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:43,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1369612509, now seen corresponding path program 1 times [2024-11-27 23:23:43,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:23:43,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750011144] [2024-11-27 23:23:43,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:43,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:43,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:43,732 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:43,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:23:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:44,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 23:23:44,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:44,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:44,851 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:23:44,852 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:23:44,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750011144] [2024-11-27 23:23:44,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750011144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:44,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:44,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 23:23:44,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040356470] [2024-11-27 23:23:44,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:44,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:23:44,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:23:44,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:23:44,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:23:44,906 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-27 23:23:44,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-27 23:23:44,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:44,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-27 23:23:44,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:45,201 INFO L124 PetriNetUnfolderBase]: 267/465 cut-off events. [2024-11-27 23:23:45,202 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-27 23:23:45,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 910 conditions, 465 events. 267/465 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1945 event pairs, 168 based on Foata normal form. 3/439 useless extension candidates. Maximal degree in co-relation 844. Up to 414 conditions per place. [2024-11-27 23:23:45,210 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 23 selfloop transitions, 1 changer transitions 3/36 dead transitions. [2024-11-27 23:23:45,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 132 flow [2024-11-27 23:23:45,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:23:45,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:23:45,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-27 23:23:45,229 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5348837209302325 [2024-11-27 23:23:45,231 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 92 flow. Second operand 3 states and 69 transitions. [2024-11-27 23:23:45,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 132 flow [2024-11-27 23:23:45,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 124 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 23:23:45,248 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 72 flow [2024-11-27 23:23:45,252 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2024-11-27 23:23:45,258 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2024-11-27 23:23:45,258 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 72 flow [2024-11-27 23:23:45,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-27 23:23:45,259 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:45,259 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:45,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 23:23:45,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:45,460 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 23:23:45,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:45,461 INFO L85 PathProgramCache]: Analyzing trace with hash 229167455, now seen corresponding path program 1 times [2024-11-27 23:23:45,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:23:45,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746686513] [2024-11-27 23:23:45,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:45,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:45,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:45,465 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:45,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:23:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:46,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:23:46,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:46,390 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:23:46,390 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:23:46,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746686513] [2024-11-27 23:23:46,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746686513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:46,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:46,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:23:46,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039614935] [2024-11-27 23:23:46,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:46,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:23:46,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:23:46,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:23:46,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:23:46,405 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2024-11-27 23:23:46,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-11-27 23:23:46,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:46,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2024-11-27 23:23:46,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:46,888 INFO L124 PetriNetUnfolderBase]: 549/979 cut-off events. [2024-11-27 23:23:46,890 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-27 23:23:46,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1825 conditions, 979 events. 549/979 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4422 event pairs, 99 based on Foata normal form. 17/968 useless extension candidates. Maximal degree in co-relation 1819. Up to 341 conditions per place. [2024-11-27 23:23:46,905 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 50 selfloop transitions, 5 changer transitions 0/64 dead transitions. [2024-11-27 23:23:46,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 64 transitions, 246 flow [2024-11-27 23:23:46,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:23:46,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:23:46,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-27 23:23:46,909 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6744186046511628 [2024-11-27 23:23:46,909 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 72 flow. Second operand 4 states and 116 transitions. [2024-11-27 23:23:46,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 64 transitions, 246 flow [2024-11-27 23:23:46,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 64 transitions, 245 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:23:46,914 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 102 flow [2024-11-27 23:23:46,914 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2024-11-27 23:23:46,915 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-27 23:23:46,915 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 102 flow [2024-11-27 23:23:46,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-11-27 23:23:46,916 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:46,916 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:46,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:23:47,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:47,121 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 23:23:47,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:47,122 INFO L85 PathProgramCache]: Analyzing trace with hash 957701375, now seen corresponding path program 1 times [2024-11-27 23:23:47,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:23:47,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927112864] [2024-11-27 23:23:47,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:47,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:47,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:47,131 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:47,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:23:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:47,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 23:23:47,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:47,942 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:23:47,942 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:23:47,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927112864] [2024-11-27 23:23:47,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927112864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:47,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:47,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:23:47,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017193632] [2024-11-27 23:23:47,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:47,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:23:47,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:23:47,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:23:47,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:23:47,950 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-27 23:23:47,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-11-27 23:23:47,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:47,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-27 23:23:47,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:48,431 INFO L124 PetriNetUnfolderBase]: 870/1504 cut-off events. [2024-11-27 23:23:48,431 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-11-27 23:23:48,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3149 conditions, 1504 events. 870/1504 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 6305 event pairs, 285 based on Foata normal form. 54/1489 useless extension candidates. Maximal degree in co-relation 3140. Up to 897 conditions per place. [2024-11-27 23:23:48,446 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 40 selfloop transitions, 3 changer transitions 2/52 dead transitions. [2024-11-27 23:23:48,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 52 transitions, 230 flow [2024-11-27 23:23:48,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:23:48,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:23:48,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-11-27 23:23:48,449 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2024-11-27 23:23:48,449 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 102 flow. Second operand 3 states and 83 transitions. [2024-11-27 23:23:48,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 52 transitions, 230 flow [2024-11-27 23:23:48,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:23:48,453 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 125 flow [2024-11-27 23:23:48,453 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2024-11-27 23:23:48,454 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-11-27 23:23:48,454 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 125 flow [2024-11-27 23:23:48,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-11-27 23:23:48,455 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:48,455 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:48,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 23:23:48,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:48,657 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 23:23:48,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:48,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1562807431, now seen corresponding path program 1 times [2024-11-27 23:23:48,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:23:48,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993469349] [2024-11-27 23:23:48,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:48,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:48,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:48,662 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:48,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:23:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:49,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:23:49,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:49,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-27 23:23:49,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:49,507 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:23:49,508 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:23:49,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993469349] [2024-11-27 23:23:49,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993469349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:49,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:49,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:23:49,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32603998] [2024-11-27 23:23:49,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:49,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:23:49,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:23:49,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:23:49,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:23:49,510 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2024-11-27 23:23:49,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-27 23:23:49,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:49,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2024-11-27 23:23:49,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:49,864 INFO L124 PetriNetUnfolderBase]: 393/832 cut-off events. [2024-11-27 23:23:49,864 INFO L125 PetriNetUnfolderBase]: For 295/295 co-relation queries the response was YES. [2024-11-27 23:23:49,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1826 conditions, 832 events. 393/832 cut-off events. For 295/295 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3435 event pairs, 134 based on Foata normal form. 64/891 useless extension candidates. Maximal degree in co-relation 1814. Up to 341 conditions per place. [2024-11-27 23:23:49,872 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 32 selfloop transitions, 8 changer transitions 0/50 dead transitions. [2024-11-27 23:23:49,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 50 transitions, 247 flow [2024-11-27 23:23:49,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:23:49,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:23:49,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-11-27 23:23:49,875 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2024-11-27 23:23:49,876 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 125 flow. Second operand 3 states and 83 transitions. [2024-11-27 23:23:49,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 50 transitions, 247 flow [2024-11-27 23:23:49,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 241 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 23:23:49,883 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 135 flow [2024-11-27 23:23:49,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2024-11-27 23:23:49,885 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-11-27 23:23:49,885 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 135 flow [2024-11-27 23:23:49,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-27 23:23:49,886 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:49,886 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:49,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 23:23:50,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:50,087 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 23:23:50,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:50,088 INFO L85 PathProgramCache]: Analyzing trace with hash 812803467, now seen corresponding path program 2 times [2024-11-27 23:23:50,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:23:50,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150531846] [2024-11-27 23:23:50,088 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:23:50,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:50,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:50,093 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:50,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:23:50,780 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:23:50,780 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:50,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:23:50,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:50,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:51,000 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:23:51,001 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:23:51,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150531846] [2024-11-27 23:23:51,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150531846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:51,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:51,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:23:51,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081848404] [2024-11-27 23:23:51,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:51,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:23:51,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:23:51,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:23:51,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:23:51,026 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2024-11-27 23:23:51,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 135 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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) [2024-11-27 23:23:51,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:51,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2024-11-27 23:23:51,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:51,740 INFO L124 PetriNetUnfolderBase]: 512/1088 cut-off events. [2024-11-27 23:23:51,741 INFO L125 PetriNetUnfolderBase]: For 465/465 co-relation queries the response was YES. [2024-11-27 23:23:51,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2649 conditions, 1088 events. 512/1088 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4721 event pairs, 35 based on Foata normal form. 15/1099 useless extension candidates. Maximal degree in co-relation 2638. Up to 244 conditions per place. [2024-11-27 23:23:51,754 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 77 selfloop transitions, 6 changer transitions 0/93 dead transitions. [2024-11-27 23:23:51,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 93 transitions, 497 flow [2024-11-27 23:23:51,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:23:51,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:23:51,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-11-27 23:23:51,759 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6550387596899225 [2024-11-27 23:23:51,760 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 135 flow. Second operand 6 states and 169 transitions. [2024-11-27 23:23:51,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 93 transitions, 497 flow [2024-11-27 23:23:51,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 93 transitions, 462 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:23:51,767 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 154 flow [2024-11-27 23:23:51,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=154, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-11-27 23:23:51,768 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-11-27 23:23:51,770 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 154 flow [2024-11-27 23:23:51,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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) [2024-11-27 23:23:51,770 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:51,770 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:51,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 23:23:51,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:51,971 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 23:23:51,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:51,972 INFO L85 PathProgramCache]: Analyzing trace with hash 461681153, now seen corresponding path program 3 times [2024-11-27 23:23:51,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:23:51,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622109017] [2024-11-27 23:23:51,973 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:23:51,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:51,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:51,976 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:51,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:23:52,606 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 23:23:52,606 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:52,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:23:52,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:52,654 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 23:23:52,654 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:23:52,654 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:23:52,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622109017] [2024-11-27 23:23:52,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622109017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:52,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:52,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:23:52,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479843412] [2024-11-27 23:23:52,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:52,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:23:52,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:23:52,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:23:52,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:23:52,661 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2024-11-27 23:23:52,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2024-11-27 23:23:52,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:52,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2024-11-27 23:23:52,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:53,219 INFO L124 PetriNetUnfolderBase]: 923/1893 cut-off events. [2024-11-27 23:23:53,220 INFO L125 PetriNetUnfolderBase]: For 1485/1488 co-relation queries the response was YES. [2024-11-27 23:23:53,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4674 conditions, 1893 events. 923/1893 cut-off events. For 1485/1488 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 10063 event pairs, 229 based on Foata normal form. 64/1915 useless extension candidates. Maximal degree in co-relation 4660. Up to 904 conditions per place. [2024-11-27 23:23:53,235 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 67 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2024-11-27 23:23:53,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 80 transitions, 492 flow [2024-11-27 23:23:53,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:23:53,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:23:53,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-11-27 23:23:53,237 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.686046511627907 [2024-11-27 23:23:53,237 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 154 flow. Second operand 4 states and 118 transitions. [2024-11-27 23:23:53,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 80 transitions, 492 flow [2024-11-27 23:23:53,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 80 transitions, 453 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-27 23:23:53,242 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 159 flow [2024-11-27 23:23:53,243 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=139, 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=159, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-11-27 23:23:53,243 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2024-11-27 23:23:53,244 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 159 flow [2024-11-27 23:23:53,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2024-11-27 23:23:53,244 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:53,245 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:53,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 23:23:53,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:53,446 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 23:23:53,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:53,447 INFO L85 PathProgramCache]: Analyzing trace with hash 966638209, now seen corresponding path program 4 times [2024-11-27 23:23:53,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:23:53,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396958891] [2024-11-27 23:23:53,447 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:23:53,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:53,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:53,452 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:53,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:23:54,041 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:23:54,041 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:54,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:23:54,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:54,125 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:23:54,126 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:54,252 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:23:54,254 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:23:54,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396958891] [2024-11-27 23:23:54,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396958891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:23:54,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:23:54,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-27 23:23:54,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729970658] [2024-11-27 23:23:54,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:54,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:23:54,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:23:54,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:23:54,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:23:54,269 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-27 23:23:54,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 159 flow. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 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) [2024-11-27 23:23:54,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:54,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-27 23:23:54,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:55,389 INFO L124 PetriNetUnfolderBase]: 1159/2273 cut-off events. [2024-11-27 23:23:55,390 INFO L125 PetriNetUnfolderBase]: For 1337/1345 co-relation queries the response was YES. [2024-11-27 23:23:55,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5819 conditions, 2273 events. 1159/2273 cut-off events. For 1337/1345 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11825 event pairs, 121 based on Foata normal form. 29/2292 useless extension candidates. Maximal degree in co-relation 5805. Up to 490 conditions per place. [2024-11-27 23:23:55,412 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 92 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2024-11-27 23:23:55,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 107 transitions, 596 flow [2024-11-27 23:23:55,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:23:55,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:23:55,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-11-27 23:23:55,413 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6511627906976745 [2024-11-27 23:23:55,413 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 159 flow. Second operand 6 states and 168 transitions. [2024-11-27 23:23:55,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 107 transitions, 596 flow [2024-11-27 23:23:55,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 107 transitions, 596 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 23:23:55,418 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 181 flow [2024-11-27 23:23:55,418 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-11-27 23:23:55,419 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 13 predicate places. [2024-11-27 23:23:55,419 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 181 flow [2024-11-27 23:23:55,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 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) [2024-11-27 23:23:55,420 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:55,420 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:55,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 23:23:55,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:55,622 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 23:23:55,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:55,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1665663017, now seen corresponding path program 5 times [2024-11-27 23:23:55,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:23:55,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278224397] [2024-11-27 23:23:55,624 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:23:55,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:55,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:55,627 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:55,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:23:56,305 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-27 23:23:56,305 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:56,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:23:56,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:56,381 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 23:23:56,381 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:56,454 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 23:23:56,455 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:23:56,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278224397] [2024-11-27 23:23:56,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278224397] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:23:56,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:23:56,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2024-11-27 23:23:56,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188934188] [2024-11-27 23:23:56,455 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:56,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:23:56,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:23:56,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:23:56,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:23:56,463 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-27 23:23:56,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-27 23:23:56,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:56,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-27 23:23:56,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:56,906 INFO L124 PetriNetUnfolderBase]: 605/1297 cut-off events. [2024-11-27 23:23:56,907 INFO L125 PetriNetUnfolderBase]: For 1482/1484 co-relation queries the response was YES. [2024-11-27 23:23:56,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3529 conditions, 1297 events. 605/1297 cut-off events. For 1482/1484 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5553 event pairs, 167 based on Foata normal form. 72/1363 useless extension candidates. Maximal degree in co-relation 3514. Up to 570 conditions per place. [2024-11-27 23:23:56,916 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 49 selfloop transitions, 6 changer transitions 0/63 dead transitions. [2024-11-27 23:23:56,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 383 flow [2024-11-27 23:23:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:23:56,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:23:56,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-11-27 23:23:56,918 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.563953488372093 [2024-11-27 23:23:56,918 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 181 flow. Second operand 4 states and 97 transitions. [2024-11-27 23:23:56,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 383 flow [2024-11-27 23:23:56,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 367 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-27 23:23:56,923 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 200 flow [2024-11-27 23:23:56,924 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2024-11-27 23:23:56,925 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 17 predicate places. [2024-11-27 23:23:56,928 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 200 flow [2024-11-27 23:23:56,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-27 23:23:56,928 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:56,928 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:56,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-27 23:23:57,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:57,130 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 23:23:57,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:57,130 INFO L85 PathProgramCache]: Analyzing trace with hash -571256519, now seen corresponding path program 6 times [2024-11-27 23:23:57,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:23:57,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783302770] [2024-11-27 23:23:57,131 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:23:57,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:57,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:57,137 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:57,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:23:57,931 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-27 23:23:57,932 INFO L230 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-27 23:23:57,932 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:23:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:23:58,159 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-27 23:23:58,159 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 23:23:58,160 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2024-11-27 23:23:58,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-27 23:23:58,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-27 23:23:58,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-27 23:23:58,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 23:23:58,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:58,364 INFO L422 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2024-11-27 23:23:58,481 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-27 23:23:58,481 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 23:23:58,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:23:58 BasicIcfg [2024-11-27 23:23:58,491 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 23:23:58,491 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 23:23:58,491 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 23:23:58,492 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 23:23:58,493 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:23:43" (3/4) ... [2024-11-27 23:23:58,495 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-27 23:23:58,496 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 23:23:58,497 INFO L158 Benchmark]: Toolchain (without parser) took 19431.67ms. Allocated memory was 83.9MB in the beginning and 553.6MB in the end (delta: 469.8MB). Free memory was 58.7MB in the beginning and 281.3MB in the end (delta: -222.6MB). Peak memory consumption was 247.8MB. Max. memory is 16.1GB. [2024-11-27 23:23:58,498 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 83.9MB. Free memory is still 64.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:23:58,499 INFO L158 Benchmark]: CACSL2BoogieTranslator took 859.18ms. Allocated memory is still 83.9MB. Free memory was 58.4MB in the beginning and 29.4MB in the end (delta: 29.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-27 23:23:58,499 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.75ms. Allocated memory is still 83.9MB. Free memory was 29.4MB in the beginning and 26.6MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:23:58,500 INFO L158 Benchmark]: Boogie Preprocessor took 90.98ms. Allocated memory is still 83.9MB. Free memory was 26.6MB in the beginning and 22.8MB in the end (delta: 3.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:23:58,500 INFO L158 Benchmark]: RCFGBuilder took 3209.77ms. Allocated memory was 83.9MB in the beginning and 268.4MB in the end (delta: 184.5MB). Free memory was 22.8MB in the beginning and 219.2MB in the end (delta: -196.4MB). Peak memory consumption was 57.8MB. Max. memory is 16.1GB. [2024-11-27 23:23:58,501 INFO L158 Benchmark]: TraceAbstraction took 15178.01ms. Allocated memory was 268.4MB in the beginning and 553.6MB in the end (delta: 285.2MB). Free memory was 219.2MB in the beginning and 281.3MB in the end (delta: -62.2MB). Peak memory consumption was 223.5MB. Max. memory is 16.1GB. [2024-11-27 23:23:58,502 INFO L158 Benchmark]: Witness Printer took 4.99ms. Allocated memory is still 553.6MB. Free memory was 281.3MB in the beginning and 281.3MB in the end (delta: 47.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:23:58,505 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 83.9MB. Free memory is still 64.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 859.18ms. Allocated memory is still 83.9MB. Free memory was 58.4MB in the beginning and 29.4MB in the end (delta: 29.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.75ms. Allocated memory is still 83.9MB. Free memory was 29.4MB in the beginning and 26.6MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 90.98ms. Allocated memory is still 83.9MB. Free memory was 26.6MB in the beginning and 22.8MB in the end (delta: 3.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 3209.77ms. Allocated memory was 83.9MB in the beginning and 268.4MB in the end (delta: 184.5MB). Free memory was 22.8MB in the beginning and 219.2MB in the end (delta: -196.4MB). Peak memory consumption was 57.8MB. Max. memory is 16.1GB. * TraceAbstraction took 15178.01ms. Allocated memory was 268.4MB in the beginning and 553.6MB in the end (delta: 285.2MB). Free memory was 219.2MB in the beginning and 281.3MB in the end (delta: -62.2MB). Peak memory consumption was 223.5MB. Max. memory is 16.1GB. * Witness Printer took 4.99ms. Allocated memory is still 553.6MB. Free memory was 281.3MB in the beginning and 281.3MB in the end (delta: 47.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L870] 0 int num; [L871] 0 unsigned long total; [L872] 0 int flag; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L874] 0 pthread_cond_t empty, full; [L907] 0 pthread_t t1, t2; [L908] 0 num = 0 [L909] 0 total = 0 [L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [\old(arg)={0:0}, flag=0, m={3:0}, num=0, t1=-1, total=0] [L876] 1 int i; [L877] 1 i = 0 VAL [\old(arg)={0:0}, arg={0:0}, flag=0, i=0, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 VAL [\old(arg)={0:0}, arg={0:0}, flag=0, i=0, m={3:0}, num=0, total=0] [L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, flag=0, i=0, m={3:0}, num=0, t1=-1, t2=0, total=0] [L890] 2 int j; [L891] 2 j = 0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=0, j=0, m={3:0}, num=0, total=0] [L880] COND FALSE 1 !(num > 0) [L882] 1 num++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=0, j=0, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=1, j=0, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=1, j=0, m={3:0}, num=1, total=0] [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j [L897] 2 num-- VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=1, j=0, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=1, j=0, m={3:0}, num=0, total=0] [L900] 2 j++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=1, j=1, m={3:0}, num=0, total=0] [L880] COND FALSE 1 !(num > 0) [L882] 1 num++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=1, j=1, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=1, j=1, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=2, j=1, m={3:0}, num=1, total=0] [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j [L897] 2 num-- VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=2, j=1, m={3:0}, num=0, total=1] [L878] COND TRUE 1 i < 3 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=2, j=1, m={3:0}, num=0, total=1] [L900] 2 j++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=2, j=2, m={3:0}, num=0, total=1] [L892] COND TRUE 2 j < 3 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=2, j=2, m={3:0}, num=0, total=1] [L880] COND FALSE 1 !(num > 0) [L882] 1 num++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=2, j=2, m={3:0}, num=1, total=1] [L885] 1 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, flag=0, i=3, j=2, m={3:0}, num=1, total=1] [L878] COND FALSE 1 !(i < 3) [L887] 1 return ((void *)0); [L915] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, flag=0, i=3, j=2, m={3:0}, num=1, t1=-1, t2=0, total=1] [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j [L897] 2 num-- VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, flag=0, i=3, j=2, m={3:0}, num=0, total=3] [L900] 2 j++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, flag=0, i=3, j=3, m={3:0}, num=0, total=3] [L892] COND FALSE 2 !(j < 3) [L902] 2 total = total + j [L903] 2 flag = 1 [L904] 2 return ((void *)0); [L916] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, flag=1, i=3, j=3, m={3:0}, num=0, t1=-1, t2=0, total=6] [L917] COND TRUE 0 \read(flag) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, flag=1, i=3, j=3, m={3:0}, num=0, t1=-1, t2=0, total=6] [L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2)) [L919] CALL 0 reach_error() [L18] COND FALSE 0 !(0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, flag=1, i=3, j=3, m={3:0}, num=0, total=6] [L18] 0 __assert_fail ("0", "", 0, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, flag=1, i=3, j=3, m={3:0}, num=0, total=6] - UnprovableResult [Line: 906]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 913]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 914]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 59 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.9s, OverallIterations: 9, TraceHistogramMax: 3, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 223 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 208 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 960 IncrementalHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 1 mSDtfsCounter, 960 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 295 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=8, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 272 NumberOfCodeBlocks, 259 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 295 ConstructedInterpolants, 0 QuantifiedInterpolants, 729 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1592 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 57/81 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-27 23:23:58,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708abe5-df32-4d83-9931-5c2481dd8f13/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample