./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd --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 d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:05:47,919 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:05:48,029 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 15:05:48,043 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:05:48,043 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:05:48,089 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:05:48,091 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:05:48,091 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:05:48,091 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:05:48,092 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:05:48,092 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:05:48,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:05:48,094 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:05:48,094 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:05:48,095 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:05:48,095 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:05:48,095 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:05:48,095 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:05:48,095 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:05:48,096 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:05:48,096 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 15:05:48,097 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 15:05:48,097 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 15:05:48,097 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:05:48,097 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:05:48,097 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:05:48,097 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:05:48,098 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:05:48,098 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:05:48,098 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:05:48,098 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:05:48,098 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:05:48,098 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:05:48,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:05:48,100 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:05:48,100 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:05:48,100 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:05:48,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:05:48,100 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:05:48,101 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:05:48,101 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:05:48,101 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:05:48,101 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_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd 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 -> d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 [2024-11-13 15:05:48,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:05:48,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:05:48,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:05:48,557 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:05:48,558 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:05:48,560 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c Unable to find full path for "g++" Unable to find full path for "g++" [2024-11-13 15:05:51,873 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:05:52,257 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:05:52,258 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-11-13 15:05:52,268 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/data/0b9d09cfa/7486eed4d20a4f28a1a5b3b9ff07c473/FLAGf11a612fa [2024-11-13 15:05:52,285 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/data/0b9d09cfa/7486eed4d20a4f28a1a5b3b9ff07c473 [2024-11-13 15:05:52,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:05:52,290 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:05:52,292 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:05:52,292 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:05:52,297 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:05:52,299 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:05:52" (1/1) ... [2024-11-13 15:05:52,300 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5142458d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:05:52, skipping insertion in model container [2024-11-13 15:05:52,300 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:05:52" (1/1) ... [2024-11-13 15:05:52,329 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:05:52,613 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:05:52,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:05:52,637 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:05:52,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:05:52,713 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:05:52,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:05:52 WrapperNode [2024-11-13 15:05:52,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:05:52,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:05:52,718 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:05:52,718 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:05:52,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:05:52" (1/1) ... [2024-11-13 15:05:52,741 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:05:52" (1/1) ... [2024-11-13 15:05:52,789 INFO L138 Inliner]: procedures = 25, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 170 [2024-11-13 15:05:52,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:05:52,790 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:05:52,790 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:05:52,790 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:05:52,804 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:05:52" (1/1) ... [2024-11-13 15:05:52,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:05:52" (1/1) ... [2024-11-13 15:05:52,807 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:05:52" (1/1) ... [2024-11-13 15:05:52,834 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-13 15:05:52,834 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:05:52" (1/1) ... [2024-11-13 15:05:52,834 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:05:52" (1/1) ... [2024-11-13 15:05:52,844 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:05:52" (1/1) ... [2024-11-13 15:05:52,848 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:05:52" (1/1) ... [2024-11-13 15:05:52,849 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:05:52" (1/1) ... [2024-11-13 15:05:52,850 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:05:52" (1/1) ... [2024-11-13 15:05:52,853 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:05:52,854 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:05:52,854 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:05:52,854 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:05:52,855 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:05:52" (1/1) ... [2024-11-13 15:05:52,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:05:52,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:05:52,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:05:52,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:05:52,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:05:52,924 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 15:05:52,924 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 15:05:52,924 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 15:05:52,924 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 15:05:52,924 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 15:05:52,924 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 15:05:52,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:05:52,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:05:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:05:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 15:05:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 15:05:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 15:05:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:05:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:05:52,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:05:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:05:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:05:52,926 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 15:05:53,102 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:05:53,106 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:05:53,555 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:05:53,556 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:05:53,936 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:05:53,936 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 15:05:53,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:05:53 BoogieIcfgContainer [2024-11-13 15:05:53,937 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:05:53,942 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:05:53,942 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:05:53,947 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:05:53,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:05:52" (1/3) ... [2024-11-13 15:05:53,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e054500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:05:53, skipping insertion in model container [2024-11-13 15:05:53,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:05:52" (2/3) ... [2024-11-13 15:05:53,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e054500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:05:53, skipping insertion in model container [2024-11-13 15:05:53,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:05:53" (3/3) ... [2024-11-13 15:05:53,949 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-multiply-verify.wvr.c [2024-11-13 15:05:53,965 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:05:53,967 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-multiply-verify.wvr.c that has 4 procedures, 47 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2024-11-13 15:05:53,967 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:05:54,075 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-13 15:05:54,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 49 transitions, 119 flow [2024-11-13 15:05:54,186 INFO L124 PetriNetUnfolderBase]: 3/46 cut-off events. [2024-11-13 15:05:54,189 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 15:05:54,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 3/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 88 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-11-13 15:05:54,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 49 transitions, 119 flow [2024-11-13 15:05:54,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 45 transitions, 108 flow [2024-11-13 15:05:54,211 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:05:54,236 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;@338d8acb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:05:54,236 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-13 15:05:54,243 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:05:54,243 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-13 15:05:54,244 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 15:05:54,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:05:54,245 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 15:05:54,245 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:05:54,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:05:54,253 INFO L85 PathProgramCache]: Analyzing trace with hash 527554, now seen corresponding path program 1 times [2024-11-13 15:05:54,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:05:54,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365070970] [2024-11-13 15:05:54,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:05:54,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:05:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:05:54,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:05:54,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:05:54,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365070970] [2024-11-13 15:05:54,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365070970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:05:54,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:05:54,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 15:05:54,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019505103] [2024-11-13 15:05:54,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:05:54,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:05:54,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:05:54,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:05:54,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:05:54,619 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-13 15:05:54,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-11-13 15:05:54,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:05:54,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-13 15:05:54,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:05:55,158 INFO L124 PetriNetUnfolderBase]: 886/1433 cut-off events. [2024-11-13 15:05:55,158 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-11-13 15:05:55,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2898 conditions, 1433 events. 886/1433 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7209 event pairs, 768 based on Foata normal form. 1/1098 useless extension candidates. Maximal degree in co-relation 2728. Up to 1319 conditions per place. [2024-11-13 15:05:55,187 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 28 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2024-11-13 15:05:55,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 162 flow [2024-11-13 15:05:55,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:05:55,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:05:55,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-13 15:05:55,208 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54421768707483 [2024-11-13 15:05:55,211 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 108 flow. Second operand 3 states and 80 transitions. [2024-11-13 15:05:55,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 162 flow [2024-11-13 15:05:55,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-13 15:05:55,231 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 94 flow [2024-11-13 15:05:55,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2024-11-13 15:05:55,238 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2024-11-13 15:05:55,240 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 94 flow [2024-11-13 15:05:55,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-11-13 15:05:55,241 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:05:55,241 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 15:05:55,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:05:55,241 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:05:55,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:05:55,242 INFO L85 PathProgramCache]: Analyzing trace with hash 527555, now seen corresponding path program 1 times [2024-11-13 15:05:55,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:05:55,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991999258] [2024-11-13 15:05:55,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:05:55,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:05:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:05:55,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:05:55,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:05:55,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991999258] [2024-11-13 15:05:55,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991999258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:05:55,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:05:55,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:05:55,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924821309] [2024-11-13 15:05:55,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:05:55,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:05:55,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:05:55,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:05:55,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:05:55,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-13 15:05:55,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-11-13 15:05:55,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:05:55,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-13 15:05:55,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:05:56,178 INFO L124 PetriNetUnfolderBase]: 887/1436 cut-off events. [2024-11-13 15:05:56,178 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-13 15:05:56,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2824 conditions, 1436 events. 887/1436 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7210 event pairs, 768 based on Foata normal form. 0/1100 useless extension candidates. Maximal degree in co-relation 2802. Up to 1324 conditions per place. [2024-11-13 15:05:56,195 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 30 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-11-13 15:05:56,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 170 flow [2024-11-13 15:05:56,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:05:56,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:05:56,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-11-13 15:05:56,198 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5051020408163265 [2024-11-13 15:05:56,198 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 94 flow. Second operand 4 states and 99 transitions. [2024-11-13 15:05:56,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 170 flow [2024-11-13 15:05:56,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:05:56,201 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 117 flow [2024-11-13 15:05:56,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-11-13 15:05:56,202 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2024-11-13 15:05:56,202 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 117 flow [2024-11-13 15:05:56,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-11-13 15:05:56,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:05:56,203 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-13 15:05:56,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:05:56,203 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:05:56,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:05:56,204 INFO L85 PathProgramCache]: Analyzing trace with hash 506996658, now seen corresponding path program 1 times [2024-11-13 15:05:56,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:05:56,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806061869] [2024-11-13 15:05:56,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:05:56,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:05:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:05:56,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:05:56,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:05:56,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806061869] [2024-11-13 15:05:56,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806061869] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:05:56,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099039905] [2024-11-13 15:05:56,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:05:56,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:05:56,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:05:56,772 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:05:56,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:05:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:05:56,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 15:05:56,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:05:56,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 9 [2024-11-13 15:05:57,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:05:57,292 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:05:57,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:05:57,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099039905] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:05:57,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:05:57,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-13 15:05:57,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225394829] [2024-11-13 15:05:57,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:05:57,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 15:05:57,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:05:57,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 15:05:57,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:05:57,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-13 15:05:57,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 117 flow. Second operand has 11 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 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) [2024-11-13 15:05:57,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:05:57,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-13 15:05:57,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:05:58,178 INFO L124 PetriNetUnfolderBase]: 888/1438 cut-off events. [2024-11-13 15:05:58,178 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-13 15:05:58,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2840 conditions, 1438 events. 888/1438 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7242 event pairs, 768 based on Foata normal form. 0/1101 useless extension candidates. Maximal degree in co-relation 2809. Up to 1321 conditions per place. [2024-11-13 15:05:58,190 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 26 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2024-11-13 15:05:58,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 197 flow [2024-11-13 15:05:58,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:05:58,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 15:05:58,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-11-13 15:05:58,192 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42346938775510207 [2024-11-13 15:05:58,192 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 117 flow. Second operand 8 states and 166 transitions. [2024-11-13 15:05:58,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 197 flow [2024-11-13 15:05:58,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:05:58,196 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 142 flow [2024-11-13 15:05:58,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=142, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-11-13 15:05:58,198 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-11-13 15:05:58,199 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 142 flow [2024-11-13 15:05:58,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 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) [2024-11-13 15:05:58,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:05:58,199 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 15:05:58,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:05:58,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:05:58,404 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:05:58,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:05:58,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1459879376, now seen corresponding path program 1 times [2024-11-13 15:05:58,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:05:58,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743381206] [2024-11-13 15:05:58,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:05:58,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:05:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:05:58,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:05:58,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:05:58,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743381206] [2024-11-13 15:05:58,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743381206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:05:58,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:05:58,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:05:58,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404184829] [2024-11-13 15:05:58,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:05:58,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:05:58,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:05:58,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:05:58,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:05:58,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-11-13 15:05:58,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-11-13 15:05:58,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:05:58,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-11-13 15:05:58,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:05:58,819 INFO L124 PetriNetUnfolderBase]: 957/1570 cut-off events. [2024-11-13 15:05:58,819 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-13 15:05:58,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3105 conditions, 1570 events. 957/1570 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7802 event pairs, 812 based on Foata normal form. 35/1289 useless extension candidates. Maximal degree in co-relation 2810. Up to 1325 conditions per place. [2024-11-13 15:05:58,830 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 33 selfloop transitions, 2 changer transitions 13/59 dead transitions. [2024-11-13 15:05:58,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 265 flow [2024-11-13 15:05:58,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:05:58,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:05:58,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-13 15:05:58,833 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2024-11-13 15:05:58,833 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 142 flow. Second operand 4 states and 120 transitions. [2024-11-13 15:05:58,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 265 flow [2024-11-13 15:05:58,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 59 transitions, 223 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-13 15:05:58,836 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 116 flow [2024-11-13 15:05:58,836 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-11-13 15:05:58,837 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2024-11-13 15:05:58,837 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 116 flow [2024-11-13 15:05:58,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-11-13 15:05:58,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:05:58,837 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:05:58,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:05:58,837 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:05:58,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:05:58,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1458942751, now seen corresponding path program 1 times [2024-11-13 15:05:58,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:05:58,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156373290] [2024-11-13 15:05:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:05:58,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:05:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:05:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:05:59,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:05:59,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156373290] [2024-11-13 15:05:59,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156373290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:05:59,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:05:59,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:05:59,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118640371] [2024-11-13 15:05:59,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:05:59,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:05:59,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:05:59,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:05:59,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:05:59,295 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-11-13 15:05:59,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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) [2024-11-13 15:05:59,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:05:59,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-11-13 15:05:59,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:05:59,521 INFO L124 PetriNetUnfolderBase]: 659/1084 cut-off events. [2024-11-13 15:05:59,521 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-11-13 15:05:59,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 1084 events. 659/1084 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5162 event pairs, 556 based on Foata normal form. 0/894 useless extension candidates. Maximal degree in co-relation 2391. Up to 982 conditions per place. [2024-11-13 15:05:59,533 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 30 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-11-13 15:05:59,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 44 transitions, 174 flow [2024-11-13 15:05:59,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:05:59,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:05:59,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-11-13 15:05:59,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-13 15:05:59,536 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 116 flow. Second operand 4 states and 98 transitions. [2024-11-13 15:05:59,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 44 transitions, 174 flow [2024-11-13 15:05:59,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:05:59,538 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 110 flow [2024-11-13 15:05:59,538 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2024-11-13 15:05:59,539 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2024-11-13 15:05:59,539 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 110 flow [2024-11-13 15:05:59,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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) [2024-11-13 15:05:59,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:05:59,540 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:05:59,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 15:05:59,540 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:05:59,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:05:59,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1458942752, now seen corresponding path program 1 times [2024-11-13 15:05:59,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:05:59,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032767468] [2024-11-13 15:05:59,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:05:59,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:05:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:05:59,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:05:59,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:05:59,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032767468] [2024-11-13 15:05:59,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032767468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:05:59,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:05:59,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:05:59,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727181514] [2024-11-13 15:05:59,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:05:59,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:05:59,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:05:59,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:05:59,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:05:59,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-13 15:05:59,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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) [2024-11-13 15:05:59,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:05:59,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-13 15:05:59,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:05:59,811 INFO L124 PetriNetUnfolderBase]: 601/983 cut-off events. [2024-11-13 15:05:59,811 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-11-13 15:05:59,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2077 conditions, 983 events. 601/983 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4100 event pairs, 493 based on Foata normal form. 0/955 useless extension candidates. Maximal degree in co-relation 2052. Up to 887 conditions per place. [2024-11-13 15:05:59,817 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 29 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2024-11-13 15:05:59,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 40 transitions, 162 flow [2024-11-13 15:05:59,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:05:59,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:05:59,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2024-11-13 15:05:59,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42346938775510207 [2024-11-13 15:05:59,819 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 110 flow. Second operand 4 states and 83 transitions. [2024-11-13 15:05:59,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 40 transitions, 162 flow [2024-11-13 15:05:59,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:05:59,821 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 100 flow [2024-11-13 15:05:59,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-11-13 15:05:59,822 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2024-11-13 15:05:59,822 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 100 flow [2024-11-13 15:05:59,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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) [2024-11-13 15:05:59,822 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:05:59,822 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:05:59,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 15:05:59,823 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:05:59,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:05:59,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1621717185, now seen corresponding path program 1 times [2024-11-13 15:05:59,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:05:59,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119095620] [2024-11-13 15:05:59,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:05:59,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:05:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:05:59,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:05:59,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:05:59,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119095620] [2024-11-13 15:05:59,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119095620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:05:59,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:05:59,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:05:59,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445442492] [2024-11-13 15:05:59,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:05:59,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:05:59,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:05:59,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:05:59,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:05:59,886 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-11-13 15:05:59,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-11-13 15:05:59,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:05:59,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-11-13 15:05:59,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:06:00,055 INFO L124 PetriNetUnfolderBase]: 351/669 cut-off events. [2024-11-13 15:06:00,055 INFO L125 PetriNetUnfolderBase]: For 88/95 co-relation queries the response was YES. [2024-11-13 15:06:00,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1360 conditions, 669 events. 351/669 cut-off events. For 88/95 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3055 event pairs, 118 based on Foata normal form. 9/630 useless extension candidates. Maximal degree in co-relation 1333. Up to 432 conditions per place. [2024-11-13 15:06:00,061 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 41 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-11-13 15:06:00,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 220 flow [2024-11-13 15:06:00,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:06:00,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:06:00,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-11-13 15:06:00,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-13 15:06:00,063 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 100 flow. Second operand 3 states and 91 transitions. [2024-11-13 15:06:00,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 220 flow [2024-11-13 15:06:00,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:06:00,065 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 119 flow [2024-11-13 15:06:00,065 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2024-11-13 15:06:00,069 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2024-11-13 15:06:00,070 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 119 flow [2024-11-13 15:06:00,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-11-13 15:06:00,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:06:00,070 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:06:00,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 15:06:00,070 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:06:00,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:06:00,071 INFO L85 PathProgramCache]: Analyzing trace with hash 660622657, now seen corresponding path program 1 times [2024-11-13 15:06:00,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:06:00,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008470120] [2024-11-13 15:06:00,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:06:00,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:06:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:00,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:00,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:06:00,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008470120] [2024-11-13 15:06:00,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008470120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:06:00,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025273983] [2024-11-13 15:06:00,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:06:00,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:06:00,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:06:00,559 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:06:00,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:06:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:00,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:06:00,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:06:00,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:00,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:06:00,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:00,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025273983] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:06:00,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:06:00,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2024-11-13 15:06:00,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935819182] [2024-11-13 15:06:00,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:06:00,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 15:06:00,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:06:00,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 15:06:00,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:06:01,125 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-13 15:06:01,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 119 flow. Second operand has 12 states, 12 states have (on average 17.666666666666668) internal successors, (212), 12 states have internal predecessors, (212), 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) [2024-11-13 15:06:01,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:06:01,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-13 15:06:01,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:06:01,788 INFO L124 PetriNetUnfolderBase]: 620/1055 cut-off events. [2024-11-13 15:06:01,789 INFO L125 PetriNetUnfolderBase]: For 385/397 co-relation queries the response was YES. [2024-11-13 15:06:01,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2457 conditions, 1055 events. 620/1055 cut-off events. For 385/397 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4363 event pairs, 108 based on Foata normal form. 40/1078 useless extension candidates. Maximal degree in co-relation 1652. Up to 353 conditions per place. [2024-11-13 15:06:01,794 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 48 selfloop transitions, 9 changer transitions 32/96 dead transitions. [2024-11-13 15:06:01,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 96 transitions, 442 flow [2024-11-13 15:06:01,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:06:01,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 15:06:01,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 256 transitions. [2024-11-13 15:06:01,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4749536178107607 [2024-11-13 15:06:01,797 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 119 flow. Second operand 11 states and 256 transitions. [2024-11-13 15:06:01,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 96 transitions, 442 flow [2024-11-13 15:06:01,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 96 transitions, 415 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-13 15:06:01,802 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 118 flow [2024-11-13 15:06:01,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=118, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2024-11-13 15:06:01,803 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-11-13 15:06:01,803 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 118 flow [2024-11-13 15:06:01,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.666666666666668) internal successors, (212), 12 states have internal predecessors, (212), 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) [2024-11-13 15:06:01,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:06:01,803 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:06:01,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 15:06:02,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:06:02,004 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:06:02,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:06:02,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1727873502, now seen corresponding path program 1 times [2024-11-13 15:06:02,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:06:02,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830662984] [2024-11-13 15:06:02,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:06:02,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:06:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:02,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:06:02,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:06:02,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830662984] [2024-11-13 15:06:02,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830662984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:06:02,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:06:02,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:06:02,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020590161] [2024-11-13 15:06:02,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:06:02,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:06:02,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:06:02,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:06:02,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:06:02,125 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-11-13 15:06:02,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 118 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) [2024-11-13 15:06:02,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:06:02,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-11-13 15:06:02,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:06:02,294 INFO L124 PetriNetUnfolderBase]: 224/412 cut-off events. [2024-11-13 15:06:02,295 INFO L125 PetriNetUnfolderBase]: For 147/152 co-relation queries the response was YES. [2024-11-13 15:06:02,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 412 events. 224/412 cut-off events. For 147/152 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1431 event pairs, 56 based on Foata normal form. 29/429 useless extension candidates. Maximal degree in co-relation 889. Up to 146 conditions per place. [2024-11-13 15:06:02,298 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 44 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-11-13 15:06:02,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 254 flow [2024-11-13 15:06:02,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:06:02,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:06:02,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-11-13 15:06:02,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5816326530612245 [2024-11-13 15:06:02,299 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 118 flow. Second operand 4 states and 114 transitions. [2024-11-13 15:06:02,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 254 flow [2024-11-13 15:06:02,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 240 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-13 15:06:02,302 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 120 flow [2024-11-13 15:06:02,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-11-13 15:06:02,305 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2024-11-13 15:06:02,305 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 120 flow [2024-11-13 15:06:02,305 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) [2024-11-13 15:06:02,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:06:02,305 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:06:02,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 15:06:02,306 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:06:02,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:06:02,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1031494191, now seen corresponding path program 1 times [2024-11-13 15:06:02,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:06:02,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219388550] [2024-11-13 15:06:02,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:06:02,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:06:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:02,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:06:02,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:06:02,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219388550] [2024-11-13 15:06:02,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219388550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:06:02,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:06:02,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:06:02,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19433372] [2024-11-13 15:06:02,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:06:02,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:06:02,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:06:02,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:06:02,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:06:02,490 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-13 15:06:02,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2024-11-13 15:06:02,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:06:02,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-13 15:06:02,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:06:02,740 INFO L124 PetriNetUnfolderBase]: 240/419 cut-off events. [2024-11-13 15:06:02,740 INFO L125 PetriNetUnfolderBase]: For 209/216 co-relation queries the response was YES. [2024-11-13 15:06:02,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1019 conditions, 419 events. 240/419 cut-off events. For 209/216 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1369 event pairs, 54 based on Foata normal form. 4/411 useless extension candidates. Maximal degree in co-relation 994. Up to 195 conditions per place. [2024-11-13 15:06:02,743 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 50 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2024-11-13 15:06:02,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 60 transitions, 274 flow [2024-11-13 15:06:02,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:06:02,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:06:02,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-11-13 15:06:02,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49387755102040815 [2024-11-13 15:06:02,745 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 120 flow. Second operand 5 states and 121 transitions. [2024-11-13 15:06:02,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 60 transitions, 274 flow [2024-11-13 15:06:02,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 60 transitions, 264 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-13 15:06:02,748 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 116 flow [2024-11-13 15:06:02,748 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2024-11-13 15:06:02,749 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2024-11-13 15:06:02,749 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 116 flow [2024-11-13 15:06:02,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2024-11-13 15:06:02,749 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:06:02,749 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2024-11-13 15:06:02,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 15:06:02,749 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:06:02,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:06:02,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1028123279, now seen corresponding path program 1 times [2024-11-13 15:06:02,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:06:02,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582031501] [2024-11-13 15:06:02,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:06:02,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:06:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:05,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:05,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:06:05,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582031501] [2024-11-13 15:06:05,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582031501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:06:05,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625349662] [2024-11-13 15:06:05,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:06:05,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:06:05,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:06:05,884 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:06:05,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:06:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:06,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 15:06:06,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:06:06,270 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 23 treesize of output 1 [2024-11-13 15:06:07,945 INFO L349 Elim1Store]: treesize reduction 69, result has 12.7 percent of original size [2024-11-13 15:06:07,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 109 treesize of output 52 [2024-11-13 15:06:08,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:08,008 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:06:10,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2024-11-13 15:06:10,322 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-13 15:06:10,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 140 treesize of output 138 [2024-11-13 15:06:14,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:14,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625349662] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:06:14,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:06:14,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2024-11-13 15:06:14,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142766442] [2024-11-13 15:06:14,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:06:14,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-13 15:06:14,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:06:14,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-13 15:06:14,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1215, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 15:06:17,310 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-13 15:06:17,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 116 flow. Second operand has 38 states, 38 states have (on average 16.13157894736842) internal successors, (613), 38 states have internal predecessors, (613), 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) [2024-11-13 15:06:17,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:06:17,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-13 15:06:17,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:06:24,861 INFO L124 PetriNetUnfolderBase]: 1482/2604 cut-off events. [2024-11-13 15:06:24,861 INFO L125 PetriNetUnfolderBase]: For 1415/1415 co-relation queries the response was YES. [2024-11-13 15:06:24,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6292 conditions, 2604 events. 1482/2604 cut-off events. For 1415/1415 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 14755 event pairs, 425 based on Foata normal form. 1/2599 useless extension candidates. Maximal degree in co-relation 4944. Up to 521 conditions per place. [2024-11-13 15:06:24,878 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 170 selfloop transitions, 44 changer transitions 30/248 dead transitions. [2024-11-13 15:06:24,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 248 transitions, 1217 flow [2024-11-13 15:06:24,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 15:06:24,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-13 15:06:24,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 605 transitions. [2024-11-13 15:06:24,882 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4748822605965463 [2024-11-13 15:06:24,883 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 116 flow. Second operand 26 states and 605 transitions. [2024-11-13 15:06:24,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 248 transitions, 1217 flow [2024-11-13 15:06:24,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 248 transitions, 1150 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-13 15:06:24,892 INFO L231 Difference]: Finished difference. Result has 83 places, 84 transitions, 445 flow [2024-11-13 15:06:24,892 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=445, PETRI_PLACES=83, PETRI_TRANSITIONS=84} [2024-11-13 15:06:24,894 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 31 predicate places. [2024-11-13 15:06:24,894 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 84 transitions, 445 flow [2024-11-13 15:06:24,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 16.13157894736842) internal successors, (613), 38 states have internal predecessors, (613), 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) [2024-11-13 15:06:24,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:06:24,895 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2024-11-13 15:06:24,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:06:25,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 15:06:25,100 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:06:25,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:06:25,100 INFO L85 PathProgramCache]: Analyzing trace with hash -940160073, now seen corresponding path program 2 times [2024-11-13 15:06:25,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:06:25,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154367715] [2024-11-13 15:06:25,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:06:25,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:06:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:26,736 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:26,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:06:26,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154367715] [2024-11-13 15:06:26,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154367715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:06:26,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952973512] [2024-11-13 15:06:26,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:06:26,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:06:26,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:06:26,739 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:06:26,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:06:26,846 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:06:26,846 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:06:26,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 15:06:26,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:06:27,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:06:27,159 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:06:27,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952973512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:06:27,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:06:27,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 19 [2024-11-13 15:06:27,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088087836] [2024-11-13 15:06:27,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:06:27,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:06:27,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:06:27,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:06:27,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:06:27,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-13 15:06:27,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 84 transitions, 445 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 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) [2024-11-13 15:06:27,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:06:27,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-13 15:06:27,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:06:28,040 INFO L124 PetriNetUnfolderBase]: 1998/3464 cut-off events. [2024-11-13 15:06:28,040 INFO L125 PetriNetUnfolderBase]: For 3992/4014 co-relation queries the response was YES. [2024-11-13 15:06:28,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9644 conditions, 3464 events. 1998/3464 cut-off events. For 3992/4014 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 20734 event pairs, 484 based on Foata normal form. 20/3483 useless extension candidates. Maximal degree in co-relation 9609. Up to 1768 conditions per place. [2024-11-13 15:06:28,067 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 110 selfloop transitions, 35 changer transitions 24/173 dead transitions. [2024-11-13 15:06:28,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 173 transitions, 1142 flow [2024-11-13 15:06:28,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:06:28,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 15:06:28,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-11-13 15:06:28,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5124716553287982 [2024-11-13 15:06:28,069 INFO L175 Difference]: Start difference. First operand has 83 places, 84 transitions, 445 flow. Second operand 9 states and 226 transitions. [2024-11-13 15:06:28,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 173 transitions, 1142 flow [2024-11-13 15:06:28,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 173 transitions, 1120 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-11-13 15:06:28,095 INFO L231 Difference]: Finished difference. Result has 86 places, 110 transitions, 757 flow [2024-11-13 15:06:28,095 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=757, PETRI_PLACES=86, PETRI_TRANSITIONS=110} [2024-11-13 15:06:28,096 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 34 predicate places. [2024-11-13 15:06:28,096 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 110 transitions, 757 flow [2024-11-13 15:06:28,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 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) [2024-11-13 15:06:28,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:06:28,096 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2024-11-13 15:06:28,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:06:28,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 15:06:28,298 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:06:28,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:06:28,299 INFO L85 PathProgramCache]: Analyzing trace with hash -186582971, now seen corresponding path program 3 times [2024-11-13 15:06:28,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:06:28,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758107426] [2024-11-13 15:06:28,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:06:28,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:06:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:29,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:29,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:06:29,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758107426] [2024-11-13 15:06:29,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758107426] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:06:29,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313567647] [2024-11-13 15:06:29,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:06:29,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:06:29,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:06:29,912 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:06:29,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:06:30,025 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-13 15:06:30,025 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:06:30,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 15:06:30,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:06:30,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:06:30,444 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:06:30,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313567647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:06:30,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:06:30,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 19 [2024-11-13 15:06:30,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988816738] [2024-11-13 15:06:30,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:06:30,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:06:30,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:06:30,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:06:30,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:06:30,565 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-13 15:06:30,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 110 transitions, 757 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 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) [2024-11-13 15:06:30,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:06:30,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-13 15:06:30,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:06:31,289 INFO L124 PetriNetUnfolderBase]: 2135/3681 cut-off events. [2024-11-13 15:06:31,290 INFO L125 PetriNetUnfolderBase]: For 6378/6402 co-relation queries the response was YES. [2024-11-13 15:06:31,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11361 conditions, 3681 events. 2135/3681 cut-off events. For 6378/6402 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 22381 event pairs, 543 based on Foata normal form. 10/3683 useless extension candidates. Maximal degree in co-relation 11326. Up to 1699 conditions per place. [2024-11-13 15:06:31,312 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 112 selfloop transitions, 39 changer transitions 24/179 dead transitions. [2024-11-13 15:06:31,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 179 transitions, 1390 flow [2024-11-13 15:06:31,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:06:31,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 15:06:31,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-11-13 15:06:31,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-11-13 15:06:31,314 INFO L175 Difference]: Start difference. First operand has 86 places, 110 transitions, 757 flow. Second operand 9 states and 225 transitions. [2024-11-13 15:06:31,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 179 transitions, 1390 flow [2024-11-13 15:06:31,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 179 transitions, 1376 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-13 15:06:31,346 INFO L231 Difference]: Finished difference. Result has 95 places, 118 transitions, 979 flow [2024-11-13 15:06:31,346 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=979, PETRI_PLACES=95, PETRI_TRANSITIONS=118} [2024-11-13 15:06:31,347 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 43 predicate places. [2024-11-13 15:06:31,347 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 118 transitions, 979 flow [2024-11-13 15:06:31,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 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) [2024-11-13 15:06:31,347 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:06:31,348 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2024-11-13 15:06:31,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:06:31,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 15:06:31,552 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:06:31,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:06:31,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1315616081, now seen corresponding path program 4 times [2024-11-13 15:06:31,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:06:31,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343266239] [2024-11-13 15:06:31,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:06:31,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:06:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:33,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:33,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:06:33,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343266239] [2024-11-13 15:06:33,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343266239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:06:33,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738078604] [2024-11-13 15:06:33,251 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:06:33,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:06:33,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:06:33,253 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:06:33,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:06:33,370 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:06:33,370 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:06:33,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 15:06:33,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:06:33,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:33,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:06:34,235 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:06:34,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 60 [2024-11-13 15:06:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:34,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738078604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:06:34,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:06:34,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2024-11-13 15:06:34,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977434470] [2024-11-13 15:06:34,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:06:34,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-13 15:06:34,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:06:34,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-13 15:06:34,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1045, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 15:06:35,997 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-13 15:06:35,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 118 transitions, 979 flow. Second operand has 35 states, 35 states have (on average 16.314285714285713) internal successors, (571), 35 states have internal predecessors, (571), 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) [2024-11-13 15:06:35,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:06:35,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-13 15:06:35,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:06:39,147 INFO L124 PetriNetUnfolderBase]: 2328/4058 cut-off events. [2024-11-13 15:06:39,148 INFO L125 PetriNetUnfolderBase]: For 9719/9739 co-relation queries the response was YES. [2024-11-13 15:06:39,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13360 conditions, 4058 events. 2328/4058 cut-off events. For 9719/9739 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 25312 event pairs, 475 based on Foata normal form. 20/4077 useless extension candidates. Maximal degree in co-relation 13316. Up to 1001 conditions per place. [2024-11-13 15:06:39,172 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 170 selfloop transitions, 59 changer transitions 56/289 dead transitions. [2024-11-13 15:06:39,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 289 transitions, 2107 flow [2024-11-13 15:06:39,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 15:06:39,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-13 15:06:39,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 605 transitions. [2024-11-13 15:06:39,175 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4748822605965463 [2024-11-13 15:06:39,176 INFO L175 Difference]: Start difference. First operand has 95 places, 118 transitions, 979 flow. Second operand 26 states and 605 transitions. [2024-11-13 15:06:39,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 289 transitions, 2107 flow [2024-11-13 15:06:39,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 289 transitions, 2051 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-11-13 15:06:39,238 INFO L231 Difference]: Finished difference. Result has 123 places, 124 transitions, 1146 flow [2024-11-13 15:06:39,238 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1146, PETRI_PLACES=123, PETRI_TRANSITIONS=124} [2024-11-13 15:06:39,239 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 71 predicate places. [2024-11-13 15:06:39,239 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 124 transitions, 1146 flow [2024-11-13 15:06:39,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 16.314285714285713) internal successors, (571), 35 states have internal predecessors, (571), 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) [2024-11-13 15:06:39,240 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:06:39,240 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2024-11-13 15:06:39,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 15:06:39,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:06:39,441 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:06:39,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:06:39,441 INFO L85 PathProgramCache]: Analyzing trace with hash -440222615, now seen corresponding path program 5 times [2024-11-13 15:06:39,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:06:39,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475618099] [2024-11-13 15:06:39,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:06:39,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:06:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:40,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:06:40,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475618099] [2024-11-13 15:06:40,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475618099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:06:40,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737487078] [2024-11-13 15:06:40,903 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:06:40,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:06:40,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:06:40,906 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:06:40,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:06:41,019 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-13 15:06:41,019 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:06:41,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 15:06:41,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:06:41,083 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 15 treesize of output 1 [2024-11-13 15:06:41,135 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 15 treesize of output 1 [2024-11-13 15:06:41,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:41,718 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:06:43,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 106 [2024-11-13 15:06:43,168 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-13 15:06:43,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 725 treesize of output 631 [2024-11-13 15:06:43,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:43,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737487078] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:06:43,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:06:43,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2024-11-13 15:06:43,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244581101] [2024-11-13 15:06:43,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:06:43,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-13 15:06:43,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:06:43,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-13 15:06:43,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 15:06:45,415 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-13 15:06:45,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 124 transitions, 1146 flow. Second operand has 35 states, 35 states have (on average 16.314285714285713) internal successors, (571), 35 states have internal predecessors, (571), 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) [2024-11-13 15:06:45,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:06:45,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-13 15:06:45,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:06:48,966 INFO L124 PetriNetUnfolderBase]: 3323/5701 cut-off events. [2024-11-13 15:06:48,966 INFO L125 PetriNetUnfolderBase]: For 23722/23737 co-relation queries the response was YES. [2024-11-13 15:06:48,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20871 conditions, 5701 events. 3323/5701 cut-off events. For 23722/23737 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 36700 event pairs, 870 based on Foata normal form. 15/5715 useless extension candidates. Maximal degree in co-relation 20815. Up to 1341 conditions per place. [2024-11-13 15:06:49,005 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 213 selfloop transitions, 84 changer transitions 56/357 dead transitions. [2024-11-13 15:06:49,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 357 transitions, 3082 flow [2024-11-13 15:06:49,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 15:06:49,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-13 15:06:49,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 689 transitions. [2024-11-13 15:06:49,008 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46870748299319726 [2024-11-13 15:06:49,008 INFO L175 Difference]: Start difference. First operand has 123 places, 124 transitions, 1146 flow. Second operand 30 states and 689 transitions. [2024-11-13 15:06:49,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 357 transitions, 3082 flow [2024-11-13 15:06:49,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 357 transitions, 2896 flow, removed 54 selfloop flow, removed 14 redundant places. [2024-11-13 15:06:49,143 INFO L231 Difference]: Finished difference. Result has 147 places, 162 transitions, 1821 flow [2024-11-13 15:06:49,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1067, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1821, PETRI_PLACES=147, PETRI_TRANSITIONS=162} [2024-11-13 15:06:49,144 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 95 predicate places. [2024-11-13 15:06:49,144 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 162 transitions, 1821 flow [2024-11-13 15:06:49,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 16.314285714285713) internal successors, (571), 35 states have internal predecessors, (571), 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) [2024-11-13 15:06:49,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:06:49,145 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 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] [2024-11-13 15:06:49,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 15:06:49,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 15:06:49,349 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:06:49,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:06:49,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1174457972, now seen corresponding path program 6 times [2024-11-13 15:06:49,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:06:49,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209954134] [2024-11-13 15:06:49,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:06:49,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:06:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:50,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:50,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:06:50,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209954134] [2024-11-13 15:06:50,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209954134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:06:50,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989395679] [2024-11-13 15:06:50,913 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:06:50,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:06:50,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:06:50,915 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:06:50,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:06:51,026 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-13 15:06:51,026 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:06:51,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 15:06:51,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:06:51,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 15:06:51,334 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:06:51,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989395679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:06:51,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:06:51,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 19 [2024-11-13 15:06:51,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744996649] [2024-11-13 15:06:51,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:06:51,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:06:51,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:06:51,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:06:51,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:06:51,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-13 15:06:51,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 162 transitions, 1821 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 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) [2024-11-13 15:06:51,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:06:51,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-13 15:06:51,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:06:52,549 INFO L124 PetriNetUnfolderBase]: 3353/5741 cut-off events. [2024-11-13 15:06:52,549 INFO L125 PetriNetUnfolderBase]: For 29064/29104 co-relation queries the response was YES. [2024-11-13 15:06:52,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21807 conditions, 5741 events. 3353/5741 cut-off events. For 29064/29104 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 37075 event pairs, 967 based on Foata normal form. 9/5748 useless extension candidates. Maximal degree in co-relation 21743. Up to 3010 conditions per place. [2024-11-13 15:06:52,624 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 138 selfloop transitions, 64 changer transitions 23/229 dead transitions. [2024-11-13 15:06:52,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 229 transitions, 2587 flow [2024-11-13 15:06:52,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:06:52,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 15:06:52,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-11-13 15:06:52,630 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5147392290249433 [2024-11-13 15:06:52,630 INFO L175 Difference]: Start difference. First operand has 147 places, 162 transitions, 1821 flow. Second operand 9 states and 227 transitions. [2024-11-13 15:06:52,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 229 transitions, 2587 flow [2024-11-13 15:06:52,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 229 transitions, 2495 flow, removed 32 selfloop flow, removed 13 redundant places. [2024-11-13 15:06:52,893 INFO L231 Difference]: Finished difference. Result has 140 places, 172 transitions, 2072 flow [2024-11-13 15:06:52,894 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1741, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2072, PETRI_PLACES=140, PETRI_TRANSITIONS=172} [2024-11-13 15:06:52,895 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 88 predicate places. [2024-11-13 15:06:52,895 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 172 transitions, 2072 flow [2024-11-13 15:06:52,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 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) [2024-11-13 15:06:52,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:06:52,896 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 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] [2024-11-13 15:06:52,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 15:06:53,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 15:06:53,104 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:06:53,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:06:53,105 INFO L85 PathProgramCache]: Analyzing trace with hash -370337126, now seen corresponding path program 7 times [2024-11-13 15:06:53,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:06:53,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734988625] [2024-11-13 15:06:53,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:06:53,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:06:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:54,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:54,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:06:54,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734988625] [2024-11-13 15:06:54,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734988625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:06:54,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924439417] [2024-11-13 15:06:54,942 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:06:54,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:06:54,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:06:54,944 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:06:54,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:06:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:55,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 15:06:55,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:06:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 15:06:55,331 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:06:55,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924439417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:06:55,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:06:55,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 21 [2024-11-13 15:06:55,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030881619] [2024-11-13 15:06:55,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:06:55,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:06:55,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:06:55,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:06:55,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2024-11-13 15:06:55,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-13 15:06:55,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 172 transitions, 2072 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 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) [2024-11-13 15:06:55,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:06:55,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-13 15:06:55,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:06:56,455 INFO L124 PetriNetUnfolderBase]: 3400/5829 cut-off events. [2024-11-13 15:06:56,455 INFO L125 PetriNetUnfolderBase]: For 33986/34026 co-relation queries the response was YES. [2024-11-13 15:06:56,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23063 conditions, 5829 events. 3400/5829 cut-off events. For 33986/34026 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 37629 event pairs, 919 based on Foata normal form. 9/5836 useless extension candidates. Maximal degree in co-relation 23005. Up to 2542 conditions per place. [2024-11-13 15:06:56,502 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 139 selfloop transitions, 66 changer transitions 24/233 dead transitions. [2024-11-13 15:06:56,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 233 transitions, 2767 flow [2024-11-13 15:06:56,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:06:56,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 15:06:56,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-11-13 15:06:56,504 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5215419501133787 [2024-11-13 15:06:56,504 INFO L175 Difference]: Start difference. First operand has 140 places, 172 transitions, 2072 flow. Second operand 9 states and 230 transitions. [2024-11-13 15:06:56,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 233 transitions, 2767 flow [2024-11-13 15:06:56,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 233 transitions, 2652 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-11-13 15:06:56,733 INFO L231 Difference]: Finished difference. Result has 143 places, 173 transitions, 2142 flow [2024-11-13 15:06:56,733 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1963, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2142, PETRI_PLACES=143, PETRI_TRANSITIONS=173} [2024-11-13 15:06:56,734 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 91 predicate places. [2024-11-13 15:06:56,734 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 173 transitions, 2142 flow [2024-11-13 15:06:56,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 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) [2024-11-13 15:06:56,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:06:56,734 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:06:56,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 15:06:56,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 15:06:56,936 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:06:56,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:06:56,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1225237024, now seen corresponding path program 1 times [2024-11-13 15:06:56,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:06:56,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477495932] [2024-11-13 15:06:56,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:06:56,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:06:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:57,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:06:57,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:06:57,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477495932] [2024-11-13 15:06:57,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477495932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:06:57,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:06:57,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:06:57,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883017296] [2024-11-13 15:06:57,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:06:57,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:06:57,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:06:57,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:06:57,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:06:57,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-13 15:06:57,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 173 transitions, 2142 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-13 15:06:57,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:06:57,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-13 15:06:57,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:06:58,096 INFO L124 PetriNetUnfolderBase]: 4675/7822 cut-off events. [2024-11-13 15:06:58,097 INFO L125 PetriNetUnfolderBase]: For 47378/47399 co-relation queries the response was YES. [2024-11-13 15:06:58,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29666 conditions, 7822 events. 4675/7822 cut-off events. For 47378/47399 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 52007 event pairs, 2311 based on Foata normal form. 1/6803 useless extension candidates. Maximal degree in co-relation 29607. Up to 5196 conditions per place. [2024-11-13 15:06:58,171 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 167 selfloop transitions, 22 changer transitions 8/245 dead transitions. [2024-11-13 15:06:58,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 245 transitions, 3444 flow [2024-11-13 15:06:58,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:06:58,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:06:58,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-11-13 15:06:58,173 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5591836734693878 [2024-11-13 15:06:58,173 INFO L175 Difference]: Start difference. First operand has 143 places, 173 transitions, 2142 flow. Second operand 5 states and 137 transitions. [2024-11-13 15:06:58,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 245 transitions, 3444 flow [2024-11-13 15:06:58,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 245 transitions, 3343 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-13 15:06:58,598 INFO L231 Difference]: Finished difference. Result has 142 places, 187 transitions, 2309 flow [2024-11-13 15:06:58,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2073, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2309, PETRI_PLACES=142, PETRI_TRANSITIONS=187} [2024-11-13 15:06:58,598 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 90 predicate places. [2024-11-13 15:06:58,598 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 187 transitions, 2309 flow [2024-11-13 15:06:58,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-13 15:06:58,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:06:58,599 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:06:58,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 15:06:58,599 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:06:58,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:06:58,599 INFO L85 PathProgramCache]: Analyzing trace with hash -879553695, now seen corresponding path program 1 times [2024-11-13 15:06:58,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:06:58,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870030778] [2024-11-13 15:06:58,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:06:58,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:06:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:58,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:06:58,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:06:58,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870030778] [2024-11-13 15:06:58,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870030778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:06:58,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:06:58,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:06:58,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478814299] [2024-11-13 15:06:58,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:06:58,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:06:58,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:06:58,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:06:58,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:06:58,702 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-13 15:06:58,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 187 transitions, 2309 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-13 15:06:58,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:06:58,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-13 15:06:58,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:07:00,044 INFO L124 PetriNetUnfolderBase]: 4948/8426 cut-off events. [2024-11-13 15:07:00,044 INFO L125 PetriNetUnfolderBase]: For 51596/51637 co-relation queries the response was YES. [2024-11-13 15:07:00,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35179 conditions, 8426 events. 4948/8426 cut-off events. For 51596/51637 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 58027 event pairs, 2476 based on Foata normal form. 123/8384 useless extension candidates. Maximal degree in co-relation 34854. Up to 5715 conditions per place. [2024-11-13 15:07:00,158 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 166 selfloop transitions, 34 changer transitions 8/256 dead transitions. [2024-11-13 15:07:00,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 256 transitions, 3644 flow [2024-11-13 15:07:00,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:07:00,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:07:00,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-11-13 15:07:00,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-11-13 15:07:00,160 INFO L175 Difference]: Start difference. First operand has 142 places, 187 transitions, 2309 flow. Second operand 5 states and 135 transitions. [2024-11-13 15:07:00,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 256 transitions, 3644 flow [2024-11-13 15:07:00,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 256 transitions, 3644 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 15:07:00,553 INFO L231 Difference]: Finished difference. Result has 149 places, 199 transitions, 2549 flow [2024-11-13 15:07:00,553 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2309, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2549, PETRI_PLACES=149, PETRI_TRANSITIONS=199} [2024-11-13 15:07:00,553 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 97 predicate places. [2024-11-13 15:07:00,553 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 199 transitions, 2549 flow [2024-11-13 15:07:00,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-13 15:07:00,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:07:00,554 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:00,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 15:07:00,554 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:07:00,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:00,554 INFO L85 PathProgramCache]: Analyzing trace with hash 583948983, now seen corresponding path program 2 times [2024-11-13 15:07:00,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:07:00,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432047917] [2024-11-13 15:07:00,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:00,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:07:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:00,674 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:07:00,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:07:00,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432047917] [2024-11-13 15:07:00,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432047917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:00,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:00,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:07:00,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786410573] [2024-11-13 15:07:00,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:00,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:07:00,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:07:00,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:07:00,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:07:00,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-13 15:07:00,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 199 transitions, 2549 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-11-13 15:07:00,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:07:00,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-13 15:07:00,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:07:02,366 INFO L124 PetriNetUnfolderBase]: 5194/8977 cut-off events. [2024-11-13 15:07:02,366 INFO L125 PetriNetUnfolderBase]: For 61448/61483 co-relation queries the response was YES. [2024-11-13 15:07:02,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41345 conditions, 8977 events. 5194/8977 cut-off events. For 61448/61483 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 63110 event pairs, 915 based on Foata normal form. 143/9012 useless extension candidates. Maximal degree in co-relation 40968. Up to 4374 conditions per place. [2024-11-13 15:07:02,478 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 205 selfloop transitions, 43 changer transitions 8/304 dead transitions. [2024-11-13 15:07:02,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 304 transitions, 4513 flow [2024-11-13 15:07:02,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:07:02,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:07:02,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-11-13 15:07:02,480 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5626822157434402 [2024-11-13 15:07:02,480 INFO L175 Difference]: Start difference. First operand has 149 places, 199 transitions, 2549 flow. Second operand 7 states and 193 transitions. [2024-11-13 15:07:02,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 304 transitions, 4513 flow [2024-11-13 15:07:03,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 304 transitions, 4511 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-13 15:07:03,147 INFO L231 Difference]: Finished difference. Result has 159 places, 208 transitions, 2831 flow [2024-11-13 15:07:03,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2534, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2831, PETRI_PLACES=159, PETRI_TRANSITIONS=208} [2024-11-13 15:07:03,147 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 107 predicate places. [2024-11-13 15:07:03,148 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 208 transitions, 2831 flow [2024-11-13 15:07:03,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-11-13 15:07:03,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:07:03,148 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:03,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-13 15:07:03,148 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:07:03,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:03,148 INFO L85 PathProgramCache]: Analyzing trace with hash -902364777, now seen corresponding path program 3 times [2024-11-13 15:07:03,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:07:03,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619392552] [2024-11-13 15:07:03,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:03,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:07:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:07:03,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:07:03,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619392552] [2024-11-13 15:07:03,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619392552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:03,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:03,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:07:03,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122956486] [2024-11-13 15:07:03,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:03,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:07:03,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:07:03,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:07:03,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:07:03,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-13 15:07:03,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 208 transitions, 2831 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-13 15:07:03,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:07:03,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-13 15:07:03,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:07:04,587 INFO L124 PetriNetUnfolderBase]: 4520/7774 cut-off events. [2024-11-13 15:07:04,587 INFO L125 PetriNetUnfolderBase]: For 61512/61556 co-relation queries the response was YES. [2024-11-13 15:07:04,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38187 conditions, 7774 events. 4520/7774 cut-off events. For 61512/61556 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 52851 event pairs, 1447 based on Foata normal form. 120/7725 useless extension candidates. Maximal degree in co-relation 37750. Up to 3762 conditions per place. [2024-11-13 15:07:04,654 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 150 selfloop transitions, 20 changer transitions 41/251 dead transitions. [2024-11-13 15:07:04,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 251 transitions, 3756 flow [2024-11-13 15:07:04,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:07:04,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:07:04,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-11-13 15:07:04,655 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5836734693877551 [2024-11-13 15:07:04,655 INFO L175 Difference]: Start difference. First operand has 159 places, 208 transitions, 2831 flow. Second operand 5 states and 143 transitions. [2024-11-13 15:07:04,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 251 transitions, 3756 flow [2024-11-13 15:07:05,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 251 transitions, 3660 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-11-13 15:07:05,015 INFO L231 Difference]: Finished difference. Result has 157 places, 177 transitions, 2272 flow [2024-11-13 15:07:05,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2574, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2272, PETRI_PLACES=157, PETRI_TRANSITIONS=177} [2024-11-13 15:07:05,016 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 105 predicate places. [2024-11-13 15:07:05,016 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 177 transitions, 2272 flow [2024-11-13 15:07:05,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-13 15:07:05,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:07:05,016 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:05,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-13 15:07:05,017 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:07:05,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:05,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1026636348, now seen corresponding path program 2 times [2024-11-13 15:07:05,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:07:05,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518799971] [2024-11-13 15:07:05,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:05,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:07:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:07:05,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:07:05,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518799971] [2024-11-13 15:07:05,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518799971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:05,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:05,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:07:05,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099448103] [2024-11-13 15:07:05,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:05,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:07:05,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:07:05,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:07:05,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:07:05,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-13 15:07:05,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 177 transitions, 2272 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-13 15:07:05,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:07:05,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-13 15:07:05,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:07:06,229 INFO L124 PetriNetUnfolderBase]: 4005/6949 cut-off events. [2024-11-13 15:07:06,229 INFO L125 PetriNetUnfolderBase]: For 52322/52366 co-relation queries the response was YES. [2024-11-13 15:07:06,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34121 conditions, 6949 events. 4005/6949 cut-off events. For 52322/52366 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 46854 event pairs, 1468 based on Foata normal form. 40/6827 useless extension candidates. Maximal degree in co-relation 34001. Up to 3982 conditions per place. [2024-11-13 15:07:06,276 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 125 selfloop transitions, 35 changer transitions 19/216 dead transitions. [2024-11-13 15:07:06,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 216 transitions, 3043 flow [2024-11-13 15:07:06,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:07:06,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:07:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-11-13 15:07:06,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-13 15:07:06,278 INFO L175 Difference]: Start difference. First operand has 157 places, 177 transitions, 2272 flow. Second operand 5 states and 133 transitions. [2024-11-13 15:07:06,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 216 transitions, 3043 flow [2024-11-13 15:07:06,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 216 transitions, 2904 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-11-13 15:07:06,519 INFO L231 Difference]: Finished difference. Result has 149 places, 169 transitions, 2108 flow [2024-11-13 15:07:06,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2108, PETRI_PLACES=149, PETRI_TRANSITIONS=169} [2024-11-13 15:07:06,519 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 97 predicate places. [2024-11-13 15:07:06,519 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 169 transitions, 2108 flow [2024-11-13 15:07:06,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-13 15:07:06,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:07:06,519 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:06,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-13 15:07:06,520 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:07:06,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:06,520 INFO L85 PathProgramCache]: Analyzing trace with hash -521449888, now seen corresponding path program 3 times [2024-11-13 15:07:06,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:07:06,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482116894] [2024-11-13 15:07:06,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:06,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:07:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:06,616 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:07:06,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:07:06,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482116894] [2024-11-13 15:07:06,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482116894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:06,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:06,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:07:06,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997565469] [2024-11-13 15:07:06,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:06,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:07:06,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:07:06,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:07:06,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:07:06,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-13 15:07:06,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 169 transitions, 2108 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-13 15:07:06,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:07:06,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-13 15:07:06,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:07:07,551 INFO L124 PetriNetUnfolderBase]: 3442/5981 cut-off events. [2024-11-13 15:07:07,551 INFO L125 PetriNetUnfolderBase]: For 44940/44968 co-relation queries the response was YES. [2024-11-13 15:07:07,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29545 conditions, 5981 events. 3442/5981 cut-off events. For 44940/44968 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 38753 event pairs, 1261 based on Foata normal form. 104/5948 useless extension candidates. Maximal degree in co-relation 29304. Up to 3220 conditions per place. [2024-11-13 15:07:07,608 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 120 selfloop transitions, 29 changer transitions 18/200 dead transitions. [2024-11-13 15:07:07,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 200 transitions, 2694 flow [2024-11-13 15:07:07,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:07:07,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:07:07,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2024-11-13 15:07:07,609 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5673469387755102 [2024-11-13 15:07:07,610 INFO L175 Difference]: Start difference. First operand has 149 places, 169 transitions, 2108 flow. Second operand 5 states and 139 transitions. [2024-11-13 15:07:07,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 200 transitions, 2694 flow [2024-11-13 15:07:07,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 200 transitions, 2634 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-11-13 15:07:07,833 INFO L231 Difference]: Finished difference. Result has 146 places, 152 transitions, 1895 flow [2024-11-13 15:07:07,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1895, PETRI_PLACES=146, PETRI_TRANSITIONS=152} [2024-11-13 15:07:07,834 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 94 predicate places. [2024-11-13 15:07:07,834 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 152 transitions, 1895 flow [2024-11-13 15:07:07,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-13 15:07:07,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:07:07,834 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:07,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-13 15:07:07,835 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:07:07,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:07,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1706786682, now seen corresponding path program 1 times [2024-11-13 15:07:07,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:07:07,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285090913] [2024-11-13 15:07:07,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:07,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:07:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:10,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:07:10,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285090913] [2024-11-13 15:07:10,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285090913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:07:10,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136199537] [2024-11-13 15:07:10,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:10,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:10,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:10,213 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:10,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:07:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:10,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-13 15:07:10,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:10,487 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 23 treesize of output 1 [2024-11-13 15:07:11,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:11,128 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:07:12,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 72 [2024-11-13 15:07:13,027 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-13 15:07:13,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 173 treesize of output 144 [2024-11-13 15:07:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:17,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136199537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:07:17,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:07:17,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 41 [2024-11-13 15:07:17,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790891923] [2024-11-13 15:07:17,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:07:17,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 15:07:17,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:07:17,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 15:07:17,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1507, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 15:07:20,381 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-13 15:07:20,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 152 transitions, 1895 flow. Second operand has 42 states, 42 states have (on average 16.214285714285715) internal successors, (681), 42 states have internal predecessors, (681), 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) [2024-11-13 15:07:20,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:07:20,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-13 15:07:20,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:07:34,045 INFO L124 PetriNetUnfolderBase]: 5684/9736 cut-off events. [2024-11-13 15:07:34,045 INFO L125 PetriNetUnfolderBase]: For 61639/62057 co-relation queries the response was YES. [2024-11-13 15:07:34,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44680 conditions, 9736 events. 5684/9736 cut-off events. For 61639/62057 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 67509 event pairs, 1527 based on Foata normal form. 98/9656 useless extension candidates. Maximal degree in co-relation 44253. Up to 1712 conditions per place. [2024-11-13 15:07:34,135 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 407 selfloop transitions, 125 changer transitions 90/634 dead transitions. [2024-11-13 15:07:34,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 634 transitions, 6237 flow [2024-11-13 15:07:34,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-13 15:07:34,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-11-13 15:07:34,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 1245 transitions. [2024-11-13 15:07:34,139 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4619666048237477 [2024-11-13 15:07:34,139 INFO L175 Difference]: Start difference. First operand has 146 places, 152 transitions, 1895 flow. Second operand 55 states and 1245 transitions. [2024-11-13 15:07:34,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 634 transitions, 6237 flow [2024-11-13 15:07:34,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 634 transitions, 6039 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-13 15:07:34,427 INFO L231 Difference]: Finished difference. Result has 208 places, 226 transitions, 3141 flow [2024-11-13 15:07:34,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1812, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=3141, PETRI_PLACES=208, PETRI_TRANSITIONS=226} [2024-11-13 15:07:34,428 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 156 predicate places. [2024-11-13 15:07:34,428 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 226 transitions, 3141 flow [2024-11-13 15:07:34,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 16.214285714285715) internal successors, (681), 42 states have internal predecessors, (681), 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) [2024-11-13 15:07:34,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:07:34,429 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:34,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 15:07:34,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:34,629 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:07:34,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:34,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1578747166, now seen corresponding path program 2 times [2024-11-13 15:07:34,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:07:34,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771877810] [2024-11-13 15:07:34,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:34,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:07:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:36,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:07:36,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771877810] [2024-11-13 15:07:36,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771877810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:07:36,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714892170] [2024-11-13 15:07:36,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:07:36,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:36,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:36,049 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:36,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:07:36,204 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:07:36,204 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:07:36,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 15:07:36,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:36,258 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 25 treesize of output 1 [2024-11-13 15:07:36,308 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 23 treesize of output 1 [2024-11-13 15:07:36,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:36,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:07:39,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 102 [2024-11-13 15:07:39,184 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-13 15:07:39,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2472 treesize of output 2079 [2024-11-13 15:07:39,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:39,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714892170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:07:39,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:07:39,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 39 [2024-11-13 15:07:39,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049275651] [2024-11-13 15:07:39,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:07:39,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-13 15:07:39,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:07:39,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-13 15:07:39,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1339, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 15:07:42,145 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-13 15:07:42,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 226 transitions, 3141 flow. Second operand has 40 states, 40 states have (on average 16.325) internal successors, (653), 40 states have internal predecessors, (653), 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) [2024-11-13 15:07:42,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:07:42,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-13 15:07:42,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:07:56,511 INFO L124 PetriNetUnfolderBase]: 7689/13107 cut-off events. [2024-11-13 15:07:56,511 INFO L125 PetriNetUnfolderBase]: For 99112/99582 co-relation queries the response was YES. [2024-11-13 15:07:56,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64170 conditions, 13107 events. 7689/13107 cut-off events. For 99112/99582 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 94645 event pairs, 1623 based on Foata normal form. 106/13026 useless extension candidates. Maximal degree in co-relation 64075. Up to 2540 conditions per place. [2024-11-13 15:07:56,682 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 426 selfloop transitions, 195 changer transitions 90/723 dead transitions. [2024-11-13 15:07:56,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 723 transitions, 7936 flow [2024-11-13 15:07:56,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-13 15:07:56,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2024-11-13 15:07:56,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 1283 transitions. [2024-11-13 15:07:56,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4675655976676385 [2024-11-13 15:07:56,688 INFO L175 Difference]: Start difference. First operand has 208 places, 226 transitions, 3141 flow. Second operand 56 states and 1283 transitions. [2024-11-13 15:07:56,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 723 transitions, 7936 flow [2024-11-13 15:07:57,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 723 transitions, 7620 flow, removed 125 selfloop flow, removed 23 redundant places. [2024-11-13 15:07:57,398 INFO L231 Difference]: Finished difference. Result has 252 places, 309 transitions, 4645 flow [2024-11-13 15:07:57,398 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2943, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=4645, PETRI_PLACES=252, PETRI_TRANSITIONS=309} [2024-11-13 15:07:57,399 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 200 predicate places. [2024-11-13 15:07:57,399 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 309 transitions, 4645 flow [2024-11-13 15:07:57,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 16.325) internal successors, (653), 40 states have internal predecessors, (653), 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) [2024-11-13 15:07:57,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:07:57,399 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:57,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 15:07:57,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:57,600 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:07:57,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:57,600 INFO L85 PathProgramCache]: Analyzing trace with hash 376224928, now seen corresponding path program 3 times [2024-11-13 15:07:57,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:07:57,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091702126] [2024-11-13 15:07:57,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:57,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:07:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:59,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:59,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:07:59,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091702126] [2024-11-13 15:07:59,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091702126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:07:59,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193347206] [2024-11-13 15:07:59,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:07:59,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:59,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:59,149 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:59,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:07:59,309 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 15:07:59,310 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:07:59,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 15:07:59,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:08:00,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:08:00,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:08:00,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:08:00,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 60 [2024-11-13 15:08:00,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:08:00,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193347206] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:08:00,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:08:00,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 29 [2024-11-13 15:08:00,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008848466] [2024-11-13 15:08:00,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:08:00,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 15:08:00,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:08:00,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 15:08:00,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2024-11-13 15:08:02,356 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-13 15:08:02,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 309 transitions, 4645 flow. Second operand has 30 states, 30 states have (on average 16.566666666666666) internal successors, (497), 30 states have internal predecessors, (497), 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) [2024-11-13 15:08:02,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:08:02,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-13 15:08:02,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:08:10,009 INFO L124 PetriNetUnfolderBase]: 8738/15000 cut-off events. [2024-11-13 15:08:10,009 INFO L125 PetriNetUnfolderBase]: For 126679/127287 co-relation queries the response was YES. [2024-11-13 15:08:10,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75141 conditions, 15000 events. 8738/15000 cut-off events. For 126679/127287 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 111338 event pairs, 1881 based on Foata normal form. 139/14913 useless extension candidates. Maximal degree in co-relation 75022. Up to 2838 conditions per place. [2024-11-13 15:08:10,206 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 329 selfloop transitions, 173 changer transitions 51/565 dead transitions. [2024-11-13 15:08:10,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 565 transitions, 7343 flow [2024-11-13 15:08:10,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-13 15:08:10,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-13 15:08:10,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 675 transitions. [2024-11-13 15:08:10,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47501759324419424 [2024-11-13 15:08:10,210 INFO L175 Difference]: Start difference. First operand has 252 places, 309 transitions, 4645 flow. Second operand 29 states and 675 transitions. [2024-11-13 15:08:10,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 565 transitions, 7343 flow [2024-11-13 15:08:11,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 565 transitions, 6976 flow, removed 150 selfloop flow, removed 23 redundant places. [2024-11-13 15:08:11,319 INFO L231 Difference]: Finished difference. Result has 258 places, 335 transitions, 5194 flow [2024-11-13 15:08:11,320 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4388, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5194, PETRI_PLACES=258, PETRI_TRANSITIONS=335} [2024-11-13 15:08:11,320 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 206 predicate places. [2024-11-13 15:08:11,320 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 335 transitions, 5194 flow [2024-11-13 15:08:11,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 16.566666666666666) internal successors, (497), 30 states have internal predecessors, (497), 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) [2024-11-13 15:08:11,321 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:08:11,321 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:08:11,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 15:08:11,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 15:08:11,522 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:08:11,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:08:11,522 INFO L85 PathProgramCache]: Analyzing trace with hash -296149680, now seen corresponding path program 4 times [2024-11-13 15:08:11,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:08:11,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757063014] [2024-11-13 15:08:11,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:08:11,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:08:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:08:13,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:13,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:08:13,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757063014] [2024-11-13 15:08:13,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757063014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:08:13,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738230521] [2024-11-13 15:08:13,615 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:08:13,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:08:13,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:08:13,617 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:08:13,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:08:13,730 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:08:13,730 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:08:13,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 15:08:13,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:08:14,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:14,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:08:14,893 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:08:14,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 60 [2024-11-13 15:08:16,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:16,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738230521] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:08:16,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:08:16,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 41 [2024-11-13 15:08:16,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607318083] [2024-11-13 15:08:16,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:08:16,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 15:08:16,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:08:16,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 15:08:16,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1536, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 15:08:18,085 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-13 15:08:18,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 335 transitions, 5194 flow. Second operand has 42 states, 42 states have (on average 16.214285714285715) internal successors, (681), 42 states have internal predecessors, (681), 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) [2024-11-13 15:08:18,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:08:18,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-13 15:08:18,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:08:26,724 INFO L124 PetriNetUnfolderBase]: 10651/18047 cut-off events. [2024-11-13 15:08:26,725 INFO L125 PetriNetUnfolderBase]: For 178903/179625 co-relation queries the response was YES. [2024-11-13 15:08:26,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92895 conditions, 18047 events. 10651/18047 cut-off events. For 178903/179625 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 134767 event pairs, 1865 based on Foata normal form. 145/17922 useless extension candidates. Maximal degree in co-relation 92783. Up to 3481 conditions per place. [2024-11-13 15:08:26,911 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 322 selfloop transitions, 251 changer transitions 70/655 dead transitions. [2024-11-13 15:08:26,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 655 transitions, 8969 flow [2024-11-13 15:08:26,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 15:08:26,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-13 15:08:26,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 845 transitions. [2024-11-13 15:08:26,913 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46607832322118037 [2024-11-13 15:08:26,913 INFO L175 Difference]: Start difference. First operand has 258 places, 335 transitions, 5194 flow. Second operand 37 states and 845 transitions. [2024-11-13 15:08:26,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 655 transitions, 8969 flow [2024-11-13 15:08:28,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 655 transitions, 8544 flow, removed 32 selfloop flow, removed 16 redundant places. [2024-11-13 15:08:28,468 INFO L231 Difference]: Finished difference. Result has 287 places, 395 transitions, 6655 flow [2024-11-13 15:08:28,469 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4883, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6655, PETRI_PLACES=287, PETRI_TRANSITIONS=395} [2024-11-13 15:08:28,469 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 235 predicate places. [2024-11-13 15:08:28,469 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 395 transitions, 6655 flow [2024-11-13 15:08:28,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 16.214285714285715) internal successors, (681), 42 states have internal predecessors, (681), 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) [2024-11-13 15:08:28,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:08:28,469 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:08:28,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 15:08:28,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 15:08:28,670 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:08:28,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:08:28,670 INFO L85 PathProgramCache]: Analyzing trace with hash 474200108, now seen corresponding path program 5 times [2024-11-13 15:08:28,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:08:28,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682584144] [2024-11-13 15:08:28,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:08:28,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:08:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:08:30,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:30,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:08:30,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682584144] [2024-11-13 15:08:30,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682584144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:08:30,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249319951] [2024-11-13 15:08:30,377 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:08:30,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:08:30,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:08:30,379 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:08:30,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 15:08:30,509 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-13 15:08:30,510 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:08:30,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-13 15:08:30,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:08:30,614 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 15 treesize of output 1 [2024-11-13 15:08:31,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:31,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:08:37,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 70 [2024-11-13 15:08:37,572 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-13 15:08:37,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 167 treesize of output 138 [2024-11-13 15:08:38,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:38,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249319951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:08:38,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:08:38,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 41 [2024-11-13 15:08:38,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888450663] [2024-11-13 15:08:38,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:08:38,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 15:08:38,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:08:38,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 15:08:38,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1510, Unknown=1, NotChecked=0, Total=1722 [2024-11-13 15:08:42,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 15:08:46,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 15:08:51,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 15:08:55,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 15:08:59,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 15:09:03,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 15:09:03,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 49 [2024-11-13 15:09:03,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 395 transitions, 6655 flow. Second operand has 42 states, 42 states have (on average 10.214285714285714) internal successors, (429), 42 states have internal predecessors, (429), 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) [2024-11-13 15:09:03,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:09:03,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 49 [2024-11-13 15:09:03,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:10:26,982 WARN L286 SmtUtils]: Spent 1.07m on a formula simplification. DAG size of input: 88 DAG size of output: 80 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:10:32,935 INFO L124 PetriNetUnfolderBase]: 10828/18367 cut-off events. [2024-11-13 15:10:32,935 INFO L125 PetriNetUnfolderBase]: For 210436/211275 co-relation queries the response was YES. [2024-11-13 15:10:33,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97752 conditions, 18367 events. 10828/18367 cut-off events. For 210436/211275 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 138361 event pairs, 2837 based on Foata normal form. 207/18256 useless extension candidates. Maximal degree in co-relation 97621. Up to 3514 conditions per place. [2024-11-13 15:10:33,324 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 454 selfloop transitions, 228 changer transitions 62/756 dead transitions. [2024-11-13 15:10:33,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 756 transitions, 10496 flow [2024-11-13 15:10:33,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-13 15:10:33,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-13 15:10:33,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 742 transitions. [2024-11-13 15:10:33,327 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34415584415584416 [2024-11-13 15:10:33,327 INFO L175 Difference]: Start difference. First operand has 287 places, 395 transitions, 6655 flow. Second operand 44 states and 742 transitions. [2024-11-13 15:10:33,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 756 transitions, 10496 flow [2024-11-13 15:10:35,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 756 transitions, 9531 flow, removed 222 selfloop flow, removed 27 redundant places. [2024-11-13 15:10:35,514 INFO L231 Difference]: Finished difference. Result has 306 places, 412 transitions, 6593 flow [2024-11-13 15:10:35,515 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5887, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=6593, PETRI_PLACES=306, PETRI_TRANSITIONS=412} [2024-11-13 15:10:35,515 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 254 predicate places. [2024-11-13 15:10:35,515 INFO L471 AbstractCegarLoop]: Abstraction has has 306 places, 412 transitions, 6593 flow [2024-11-13 15:10:35,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 10.214285714285714) internal successors, (429), 42 states have internal predecessors, (429), 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) [2024-11-13 15:10:35,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:10:35,516 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:10:35,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 15:10:35,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 15:10:35,717 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:10:35,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:10:35,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1699991610, now seen corresponding path program 6 times [2024-11-13 15:10:35,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:10:35,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748011856] [2024-11-13 15:10:35,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:10:35,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:10:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:10:37,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:10:37,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:10:37,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748011856] [2024-11-13 15:10:37,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748011856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:10:37,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403101542] [2024-11-13 15:10:37,278 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:10:37,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:10:37,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:10:37,280 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:10:37,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 15:10:37,508 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-13 15:10:37,508 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:10:37,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-13 15:10:37,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:10:37,613 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 23 treesize of output 1 [2024-11-13 15:10:38,433 INFO L349 Elim1Store]: treesize reduction 34, result has 17.1 percent of original size [2024-11-13 15:10:38,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 38 [2024-11-13 15:10:38,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:10:38,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:10:40,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 69 [2024-11-13 15:10:40,815 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-13 15:10:40,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 161 treesize of output 147 [2024-11-13 15:10:42,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:10:42,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403101542] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:10:42,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:10:42,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 39 [2024-11-13 15:10:42,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67119310] [2024-11-13 15:10:42,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:10:42,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-13 15:10:42,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:10:42,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-13 15:10:42,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1329, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 15:10:44,641 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-13 15:10:44,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 412 transitions, 6593 flow. Second operand has 40 states, 40 states have (on average 16.325) internal successors, (653), 40 states have internal predecessors, (653), 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) [2024-11-13 15:10:44,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:10:44,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-13 15:10:44,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:10:53,946 INFO L124 PetriNetUnfolderBase]: 11043/18768 cut-off events. [2024-11-13 15:10:53,947 INFO L125 PetriNetUnfolderBase]: For 180742/181537 co-relation queries the response was YES. [2024-11-13 15:10:54,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96174 conditions, 18768 events. 11043/18768 cut-off events. For 180742/181537 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 141713 event pairs, 5422 based on Foata normal form. 162/18610 useless extension candidates. Maximal degree in co-relation 96036. Up to 9955 conditions per place. [2024-11-13 15:10:54,346 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 457 selfloop transitions, 66 changer transitions 59/594 dead transitions. [2024-11-13 15:10:54,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 594 transitions, 8661 flow [2024-11-13 15:10:54,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 15:10:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-13 15:10:54,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 628 transitions. [2024-11-13 15:10:54,349 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4577259475218659 [2024-11-13 15:10:54,349 INFO L175 Difference]: Start difference. First operand has 306 places, 412 transitions, 6593 flow. Second operand 28 states and 628 transitions. [2024-11-13 15:10:54,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 594 transitions, 8661 flow [2024-11-13 15:10:56,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 594 transitions, 8432 flow, removed 32 selfloop flow, removed 23 redundant places. [2024-11-13 15:10:56,352 INFO L231 Difference]: Finished difference. Result has 311 places, 417 transitions, 6611 flow [2024-11-13 15:10:56,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6408, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6611, PETRI_PLACES=311, PETRI_TRANSITIONS=417} [2024-11-13 15:10:56,353 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 259 predicate places. [2024-11-13 15:10:56,353 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 417 transitions, 6611 flow [2024-11-13 15:10:56,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 16.325) internal successors, (653), 40 states have internal predecessors, (653), 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) [2024-11-13 15:10:56,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:10:56,354 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:10:56,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 15:10:56,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 15:10:56,554 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:10:56,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:10:56,555 INFO L85 PathProgramCache]: Analyzing trace with hash -462050380, now seen corresponding path program 7 times [2024-11-13 15:10:56,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:10:56,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393206027] [2024-11-13 15:10:56,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:10:56,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:10:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:10:57,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:10:57,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:10:57,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393206027] [2024-11-13 15:10:57,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393206027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:10:57,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018807570] [2024-11-13 15:10:57,719 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:10:57,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:10:57,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:10:57,721 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:10:57,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 15:10:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:10:57,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-13 15:10:57,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:10:58,002 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 23 treesize of output 1 [2024-11-13 15:10:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:10:58,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:11:00,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 70 [2024-11-13 15:11:00,444 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-13 15:11:00,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 171 treesize of output 142 [2024-11-13 15:11:00,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:11:00,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018807570] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:11:00,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:11:00,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2024-11-13 15:11:00,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576955290] [2024-11-13 15:11:00,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:11:00,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-13 15:11:00,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:11:00,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-13 15:11:00,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 15:11:02,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-13 15:11:02,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 417 transitions, 6611 flow. Second operand has 38 states, 38 states have (on average 16.44736842105263) internal successors, (625), 38 states have internal predecessors, (625), 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) [2024-11-13 15:11:02,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:11:02,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-13 15:11:02,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:11:16,419 INFO L124 PetriNetUnfolderBase]: 11554/19704 cut-off events. [2024-11-13 15:11:16,419 INFO L125 PetriNetUnfolderBase]: For 183357/184249 co-relation queries the response was YES. [2024-11-13 15:11:16,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99617 conditions, 19704 events. 11554/19704 cut-off events. For 183357/184249 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 151288 event pairs, 3786 based on Foata normal form. 200/19534 useless extension candidates. Maximal degree in co-relation 99478. Up to 3685 conditions per place. [2024-11-13 15:11:16,707 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 471 selfloop transitions, 222 changer transitions 76/781 dead transitions. [2024-11-13 15:11:16,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 781 transitions, 10290 flow [2024-11-13 15:11:16,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-13 15:11:16,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-13 15:11:16,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 1024 transitions. [2024-11-13 15:11:16,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46439909297052157 [2024-11-13 15:11:16,711 INFO L175 Difference]: Start difference. First operand has 311 places, 417 transitions, 6611 flow. Second operand 45 states and 1024 transitions. [2024-11-13 15:11:16,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 781 transitions, 10290 flow [2024-11-13 15:11:18,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 781 transitions, 10108 flow, removed 35 selfloop flow, removed 21 redundant places. [2024-11-13 15:11:18,765 INFO L231 Difference]: Finished difference. Result has 341 places, 435 transitions, 7297 flow [2024-11-13 15:11:18,765 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6487, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=7297, PETRI_PLACES=341, PETRI_TRANSITIONS=435} [2024-11-13 15:11:18,766 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 289 predicate places. [2024-11-13 15:11:18,766 INFO L471 AbstractCegarLoop]: Abstraction has has 341 places, 435 transitions, 7297 flow [2024-11-13 15:11:18,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 16.44736842105263) internal successors, (625), 38 states have internal predecessors, (625), 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) [2024-11-13 15:11:18,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:11:18,767 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:11:18,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-13 15:11:18,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:11:18,967 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:11:18,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:11:18,968 INFO L85 PathProgramCache]: Analyzing trace with hash 100129032, now seen corresponding path program 8 times [2024-11-13 15:11:18,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:11:18,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996534998] [2024-11-13 15:11:18,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:11:18,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:11:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:11:20,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:11:20,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:11:20,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996534998] [2024-11-13 15:11:20,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996534998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:11:20,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865419545] [2024-11-13 15:11:20,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:11:20,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:11:20,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:11:20,765 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:11:20,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 15:11:20,892 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:11:20,893 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:11:20,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 15:11:20,896 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:11:20,993 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 23 treesize of output 1 [2024-11-13 15:11:21,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:11:21,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:11:23,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 70 [2024-11-13 15:11:23,529 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-13 15:11:23,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 167 treesize of output 138 [2024-11-13 15:11:24,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:11:24,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865419545] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:11:24,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:11:24,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 41 [2024-11-13 15:11:24,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346195993] [2024-11-13 15:11:24,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:11:24,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 15:11:24,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:11:24,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 15:11:24,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1528, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 15:11:30,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 15:11:31,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-13 15:11:31,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 435 transitions, 7297 flow. Second operand has 42 states, 42 states have (on average 15.214285714285714) internal successors, (639), 42 states have internal predecessors, (639), 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) [2024-11-13 15:11:31,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:11:31,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-13 15:11:31,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:11:44,446 INFO L124 PetriNetUnfolderBase]: 11649/19869 cut-off events. [2024-11-13 15:11:44,447 INFO L125 PetriNetUnfolderBase]: For 210090/210977 co-relation queries the response was YES. [2024-11-13 15:11:44,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103130 conditions, 19869 events. 11649/19869 cut-off events. For 210090/210977 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 152614 event pairs, 4404 based on Foata normal form. 176/19683 useless extension candidates. Maximal degree in co-relation 102979. Up to 3694 conditions per place. [2024-11-13 15:11:44,759 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 466 selfloop transitions, 204 changer transitions 91/773 dead transitions. [2024-11-13 15:11:44,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 773 transitions, 10726 flow [2024-11-13 15:11:44,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-13 15:11:44,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-13 15:11:44,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 1006 transitions. [2024-11-13 15:11:44,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42772108843537415 [2024-11-13 15:11:44,762 INFO L175 Difference]: Start difference. First operand has 341 places, 435 transitions, 7297 flow. Second operand 48 states and 1006 transitions. [2024-11-13 15:11:44,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 773 transitions, 10726 flow [2024-11-13 15:11:47,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 773 transitions, 10466 flow, removed 45 selfloop flow, removed 29 redundant places. [2024-11-13 15:11:47,025 INFO L231 Difference]: Finished difference. Result has 365 places, 442 transitions, 7678 flow [2024-11-13 15:11:47,026 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=7093, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=7678, PETRI_PLACES=365, PETRI_TRANSITIONS=442} [2024-11-13 15:11:47,026 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 313 predicate places. [2024-11-13 15:11:47,026 INFO L471 AbstractCegarLoop]: Abstraction has has 365 places, 442 transitions, 7678 flow [2024-11-13 15:11:47,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 15.214285714285714) internal successors, (639), 42 states have internal predecessors, (639), 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) [2024-11-13 15:11:47,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:11:47,026 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:11:47,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 15:11:47,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:11:47,227 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:11:47,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:11:47,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1977187712, now seen corresponding path program 9 times [2024-11-13 15:11:47,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:11:47,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012625125] [2024-11-13 15:11:47,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:11:47,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:11:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:11:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:11:48,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:11:48,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012625125] [2024-11-13 15:11:48,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012625125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:11:48,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680384719] [2024-11-13 15:11:48,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:11:48,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:11:48,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:11:48,839 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:11:48,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 15:11:48,964 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 15:11:48,965 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:11:48,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-13 15:11:48,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:11:49,021 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 15 treesize of output 1 [2024-11-13 15:11:49,073 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 15 treesize of output 1 [2024-11-13 15:11:49,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:11:49,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:11:51,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 102 [2024-11-13 15:11:51,882 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-13 15:11:51,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1218 treesize of output 1033 [2024-11-13 15:11:52,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:11:52,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680384719] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:11:52,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:11:52,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 39 [2024-11-13 15:11:52,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214567373] [2024-11-13 15:11:52,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:11:52,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-13 15:11:52,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:11:52,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-13 15:11:52,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1383, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 15:11:55,433 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-13 15:11:55,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 442 transitions, 7678 flow. Second operand has 40 states, 40 states have (on average 16.325) internal successors, (653), 40 states have internal predecessors, (653), 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) [2024-11-13 15:11:55,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:11:55,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-13 15:11:55,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:12:10,587 INFO L124 PetriNetUnfolderBase]: 14112/23904 cut-off events. [2024-11-13 15:12:10,587 INFO L125 PetriNetUnfolderBase]: For 308476/309590 co-relation queries the response was YES. [2024-11-13 15:12:10,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129041 conditions, 23904 events. 14112/23904 cut-off events. For 308476/309590 co-relation queries the response was YES. Maximal size of possible extension queue 964. Compared 187262 event pairs, 3547 based on Foata normal form. 198/23626 useless extension candidates. Maximal degree in co-relation 128881. Up to 4893 conditions per place. [2024-11-13 15:12:10,891 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 521 selfloop transitions, 314 changer transitions 80/927 dead transitions. [2024-11-13 15:12:10,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 927 transitions, 13630 flow [2024-11-13 15:12:10,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-13 15:12:10,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-11-13 15:12:10,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 1217 transitions. [2024-11-13 15:12:10,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4686176357335387 [2024-11-13 15:12:10,893 INFO L175 Difference]: Start difference. First operand has 365 places, 442 transitions, 7678 flow. Second operand 53 states and 1217 transitions. [2024-11-13 15:12:10,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 927 transitions, 13630 flow [2024-11-13 15:12:14,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 927 transitions, 13045 flow, removed 75 selfloop flow, removed 39 redundant places. [2024-11-13 15:12:14,462 INFO L231 Difference]: Finished difference. Result has 388 places, 526 transitions, 9946 flow [2024-11-13 15:12:14,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=7278, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=9946, PETRI_PLACES=388, PETRI_TRANSITIONS=526} [2024-11-13 15:12:14,462 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 336 predicate places. [2024-11-13 15:12:14,463 INFO L471 AbstractCegarLoop]: Abstraction has has 388 places, 526 transitions, 9946 flow [2024-11-13 15:12:14,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 16.325) internal successors, (653), 40 states have internal predecessors, (653), 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) [2024-11-13 15:12:14,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:12:14,463 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:12:14,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 15:12:14,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-13 15:12:14,664 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 15:12:14,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:12:14,664 INFO L85 PathProgramCache]: Analyzing trace with hash -846594796, now seen corresponding path program 10 times [2024-11-13 15:12:14,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:12:14,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796827180] [2024-11-13 15:12:14,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:12:14,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:12:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:12:16,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:12:16,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:12:16,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796827180] [2024-11-13 15:12:16,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796827180] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:12:16,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141112415] [2024-11-13 15:12:16,284 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:12:16,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:12:16,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:12:16,286 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:12:16,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14168a3-0c5d-4271-81b9-acda9929ed1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 15:12:16,382 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:12:16,383 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:12:16,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 15:12:16,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:12:16,436 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 23 treesize of output 1 [2024-11-13 15:12:16,497 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 23 treesize of output 1 [2024-11-13 15:12:17,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:12:17,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:12:18,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 98 [2024-11-13 15:12:18,927 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-13 15:12:18,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 951 treesize of output 818