./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:09:32,256 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:09:32,319 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-27 20:09:32,328 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:09:32,329 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:09:32,372 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:09:32,373 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:09:32,373 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:09:32,374 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:09:32,374 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:09:32,374 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:09:32,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:09:32,376 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:09:32,376 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:09:32,376 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:09:32,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:09:32,377 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:09:32,377 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:09:32,377 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:09:32,377 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:09:32,377 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 20:09:32,377 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 20:09:32,378 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 20:09:32,378 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:09:32,378 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 20:09:32,378 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:09:32,378 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:09:32,378 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:09:32,379 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:09:32,379 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:09:32,379 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:09:32,379 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:09:32,379 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:09:32,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:09:32,380 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:09:32,380 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:09:32,380 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:09:32,381 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:09:32,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:09:32,381 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:09:32,381 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:09:32,381 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:09:32,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:09:32,381 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:09:32,381 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:09:32,381 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:09:32,381 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:09:32,381 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_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 [2024-11-27 20:09:32,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:09:32,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:09:32,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:09:32,746 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:09:32,747 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:09:32,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2024-11-27 20:09:36,367 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/data/0353755a3/52060750135e49a3a2fc6659dc320d9c/FLAGa790128f9 [2024-11-27 20:09:36,789 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:09:36,790 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2024-11-27 20:09:36,801 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/data/0353755a3/52060750135e49a3a2fc6659dc320d9c/FLAGa790128f9 [2024-11-27 20:09:36,829 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/data/0353755a3/52060750135e49a3a2fc6659dc320d9c [2024-11-27 20:09:36,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:09:36,838 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:09:36,840 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:09:36,841 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:09:36,848 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:09:36,850 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:09:36" (1/1) ... [2024-11-27 20:09:36,854 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f8ced7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:36, skipping insertion in model container [2024-11-27 20:09:36,855 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:09:36" (1/1) ... [2024-11-27 20:09:36,885 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:09:37,173 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:09:37,187 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:09:37,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:09:37,212 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:09:37,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:09:37,271 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:09:37,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:37 WrapperNode [2024-11-27 20:09:37,272 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:09:37,274 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:09:37,274 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:09:37,274 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:09:37,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:37" (1/1) ... [2024-11-27 20:09:37,294 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:37" (1/1) ... [2024-11-27 20:09:37,331 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 19, calls inlined = 25, statements flattened = 287 [2024-11-27 20:09:37,331 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:09:37,332 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:09:37,332 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:09:37,332 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:09:37,344 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:37" (1/1) ... [2024-11-27 20:09:37,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:37" (1/1) ... [2024-11-27 20:09:37,350 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:37" (1/1) ... [2024-11-27 20:09:37,372 INFO L175 MemorySlicer]: Split 18 memory accesses to 3 slices as follows [10, 2, 6]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0]. The 4 writes are split as follows [2, 0, 2]. [2024-11-27 20:09:37,372 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:37" (1/1) ... [2024-11-27 20:09:37,372 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:37" (1/1) ... [2024-11-27 20:09:37,386 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:37" (1/1) ... [2024-11-27 20:09:37,388 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:37" (1/1) ... [2024-11-27 20:09:37,393 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:37" (1/1) ... [2024-11-27 20:09:37,396 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:37" (1/1) ... [2024-11-27 20:09:37,398 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:37" (1/1) ... [2024-11-27 20:09:37,403 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:09:37,404 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:09:37,404 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:09:37,404 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:09:37,405 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:37" (1/1) ... [2024-11-27 20:09:37,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:09:37,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:37,448 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:09:37,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:09:37,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:09:37,483 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 20:09:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 20:09:37,483 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 20:09:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 20:09:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:09:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:09:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 20:09:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:09:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:09:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-27 20:09:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 20:09:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:09:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:09:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:09:37,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:09:37,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-27 20:09:37,487 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 20:09:37,626 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:09:37,628 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:09:38,467 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:09:38,467 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:09:39,016 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:09:39,018 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 20:09:39,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:09:39 BoogieIcfgContainer [2024-11-27 20:09:39,019 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:09:39,022 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:09:39,022 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:09:39,029 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:09:39,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:09:36" (1/3) ... [2024-11-27 20:09:39,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650d3f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:09:39, skipping insertion in model container [2024-11-27 20:09:39,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:37" (2/3) ... [2024-11-27 20:09:39,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650d3f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:09:39, skipping insertion in model container [2024-11-27 20:09:39,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:09:39" (3/3) ... [2024-11-27 20:09:39,032 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2024-11-27 20:09:39,053 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:09:39,055 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-node-symm.wvr.c that has 3 procedures, 75 locations, 1 initial locations, 4 loop locations, and 34 error locations. [2024-11-27 20:09:39,055 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:09:39,177 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-27 20:09:39,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 82 transitions, 178 flow [2024-11-27 20:09:39,279 INFO L124 PetriNetUnfolderBase]: 8/80 cut-off events. [2024-11-27 20:09:39,282 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 20:09:39,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 8/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 226 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-11-27 20:09:39,287 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 82 transitions, 178 flow [2024-11-27 20:09:39,292 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 79 transitions, 170 flow [2024-11-27 20:09:39,302 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:09:39,321 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;@4f62ded7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:09:39,321 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-27 20:09:39,329 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:09:39,329 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-27 20:09:39,329 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:09:39,329 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:09:39,330 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-27 20:09:39,330 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:09:39,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:39,338 INFO L85 PathProgramCache]: Analyzing trace with hash 931517, now seen corresponding path program 1 times [2024-11-27 20:09:39,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:39,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637894331] [2024-11-27 20:09:39,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:39,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:39,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:09:39,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:39,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637894331] [2024-11-27 20:09:39,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637894331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:39,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:39,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 20:09:39,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014773559] [2024-11-27 20:09:39,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:39,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:09:39,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:39,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:09:39,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:09:39,938 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-27 20:09:39,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 79 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:39,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:09:39,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-27 20:09:39,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:09:40,242 INFO L124 PetriNetUnfolderBase]: 192/580 cut-off events. [2024-11-27 20:09:40,242 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-27 20:09:40,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 580 events. 192/580 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3525 event pairs, 113 based on Foata normal form. 1/424 useless extension candidates. Maximal degree in co-relation 827. Up to 301 conditions per place. [2024-11-27 20:09:40,255 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 32 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-11-27 20:09:40,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 75 transitions, 230 flow [2024-11-27 20:09:40,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:09:40,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:09:40,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-11-27 20:09:40,270 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6869918699186992 [2024-11-27 20:09:40,272 INFO L175 Difference]: Start difference. First operand has 78 places, 79 transitions, 170 flow. Second operand 3 states and 169 transitions. [2024-11-27 20:09:40,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 75 transitions, 230 flow [2024-11-27 20:09:40,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 75 transitions, 222 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 20:09:40,285 INFO L231 Difference]: Finished difference. Result has 72 places, 75 transitions, 158 flow [2024-11-27 20:09:40,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=72, PETRI_TRANSITIONS=75} [2024-11-27 20:09:40,291 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -6 predicate places. [2024-11-27 20:09:40,292 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 75 transitions, 158 flow [2024-11-27 20:09:40,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:40,292 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:09:40,292 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-27 20:09:40,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:09:40,292 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:09:40,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:40,293 INFO L85 PathProgramCache]: Analyzing trace with hash 931518, now seen corresponding path program 1 times [2024-11-27 20:09:40,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:40,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327777216] [2024-11-27 20:09:40,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:40,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:40,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:09:40,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:40,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327777216] [2024-11-27 20:09:40,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327777216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:40,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:40,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:09:40,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622306418] [2024-11-27 20:09:40,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:40,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:09:40,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:40,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:09:40,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:09:40,870 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-27 20:09:40,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 75 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:40,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:09:40,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-27 20:09:40,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:09:41,110 INFO L124 PetriNetUnfolderBase]: 192/582 cut-off events. [2024-11-27 20:09:41,110 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 20:09:41,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 582 events. 192/582 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3520 event pairs, 113 based on Foata normal form. 0/424 useless extension candidates. Maximal degree in co-relation 877. Up to 309 conditions per place. [2024-11-27 20:09:41,129 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 36 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2024-11-27 20:09:41,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 238 flow [2024-11-27 20:09:41,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:09:41,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:09:41,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2024-11-27 20:09:41,133 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6991869918699187 [2024-11-27 20:09:41,133 INFO L175 Difference]: Start difference. First operand has 72 places, 75 transitions, 158 flow. Second operand 3 states and 172 transitions. [2024-11-27 20:09:41,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 238 flow [2024-11-27 20:09:41,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 77 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:09:41,137 INFO L231 Difference]: Finished difference. Result has 73 places, 76 transitions, 168 flow [2024-11-27 20:09:41,137 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=73, PETRI_TRANSITIONS=76} [2024-11-27 20:09:41,138 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -5 predicate places. [2024-11-27 20:09:41,138 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 76 transitions, 168 flow [2024-11-27 20:09:41,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:41,139 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:09:41,139 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-27 20:09:41,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:09:41,141 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:09:41,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:41,143 INFO L85 PathProgramCache]: Analyzing trace with hash 895218898, now seen corresponding path program 1 times [2024-11-27 20:09:41,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:41,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348332746] [2024-11-27 20:09:41,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:41,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:41,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:09:41,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:41,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348332746] [2024-11-27 20:09:41,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348332746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:09:41,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004293901] [2024-11-27 20:09:41,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:41,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:41,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:41,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:41,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:09:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:41,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 20:09:41,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:09:41,793 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 [2024-11-27 20:09:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:09:42,065 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:09:42,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:09:42,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004293901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:09:42,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:09:42,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-27 20:09:42,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85877923] [2024-11-27 20:09:42,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:09:42,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:09:42,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:42,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:09:42,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:09:42,939 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-27 20:09:42,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 76 transitions, 168 flow. Second operand has 11 states, 11 states have (on average 45.36363636363637) internal successors, (499), 11 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:42,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:09:42,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-27 20:09:42,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:09:43,447 INFO L124 PetriNetUnfolderBase]: 192/581 cut-off events. [2024-11-27 20:09:43,447 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 20:09:43,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 581 events. 192/581 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3520 event pairs, 113 based on Foata normal form. 0/424 useless extension candidates. Maximal degree in co-relation 893. Up to 305 conditions per place. [2024-11-27 20:09:43,454 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 32 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2024-11-27 20:09:43,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 240 flow [2024-11-27 20:09:43,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:09:43,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:09:43,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 258 transitions. [2024-11-27 20:09:43,457 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6292682926829268 [2024-11-27 20:09:43,457 INFO L175 Difference]: Start difference. First operand has 73 places, 76 transitions, 168 flow. Second operand 5 states and 258 transitions. [2024-11-27 20:09:43,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 240 flow [2024-11-27 20:09:43,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 76 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:09:43,460 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 180 flow [2024-11-27 20:09:43,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2024-11-27 20:09:43,465 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2024-11-27 20:09:43,465 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 180 flow [2024-11-27 20:09:43,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 45.36363636363637) internal successors, (499), 11 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:43,466 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:09:43,466 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-27 20:09:43,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:09:43,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:43,667 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:09:43,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:43,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1981982061, now seen corresponding path program 1 times [2024-11-27 20:09:43,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:43,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393547548] [2024-11-27 20:09:43,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:43,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:44,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:09:44,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:44,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393547548] [2024-11-27 20:09:44,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393547548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:44,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:44,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:09:44,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010513734] [2024-11-27 20:09:44,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:44,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:09:44,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:44,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:09:44,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:09:44,189 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-27 20:09:44,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 45.2) internal successors, (226), 5 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:44,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:09:44,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-27 20:09:44,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:09:44,454 INFO L124 PetriNetUnfolderBase]: 193/584 cut-off events. [2024-11-27 20:09:44,454 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-27 20:09:44,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 920 conditions, 584 events. 193/584 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3530 event pairs, 113 based on Foata normal form. 0/426 useless extension candidates. Maximal degree in co-relation 891. Up to 308 conditions per place. [2024-11-27 20:09:44,459 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 35 selfloop transitions, 5 changer transitions 0/79 dead transitions. [2024-11-27 20:09:44,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 79 transitions, 266 flow [2024-11-27 20:09:44,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:09:44,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:09:44,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-11-27 20:09:44,465 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6615853658536586 [2024-11-27 20:09:44,465 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 180 flow. Second operand 4 states and 217 transitions. [2024-11-27 20:09:44,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 79 transitions, 266 flow [2024-11-27 20:09:44,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 79 transitions, 256 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-27 20:09:44,468 INFO L231 Difference]: Finished difference. Result has 77 places, 78 transitions, 195 flow [2024-11-27 20:09:44,469 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=77, PETRI_TRANSITIONS=78} [2024-11-27 20:09:44,470 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -1 predicate places. [2024-11-27 20:09:44,470 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 78 transitions, 195 flow [2024-11-27 20:09:44,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.2) internal successors, (226), 5 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:44,470 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:09:44,470 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:44,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:09:44,470 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:09:44,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:44,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1311905478, now seen corresponding path program 1 times [2024-11-27 20:09:44,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:44,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466461852] [2024-11-27 20:09:44,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:44,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:09:44,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:44,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466461852] [2024-11-27 20:09:44,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466461852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:44,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:44,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:09:44,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080186279] [2024-11-27 20:09:44,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:44,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:09:44,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:44,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:09:44,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:09:44,607 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-27 20:09:44,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 195 flow. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:44,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:09:44,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-27 20:09:44,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:09:44,784 INFO L124 PetriNetUnfolderBase]: 193/582 cut-off events. [2024-11-27 20:09:44,784 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-27 20:09:44,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923 conditions, 582 events. 193/582 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3522 event pairs, 113 based on Foata normal form. 0/429 useless extension candidates. Maximal degree in co-relation 895. Up to 305 conditions per place. [2024-11-27 20:09:44,789 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 35 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2024-11-27 20:09:44,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 267 flow [2024-11-27 20:09:44,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:09:44,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:09:44,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2024-11-27 20:09:44,790 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6829268292682927 [2024-11-27 20:09:44,791 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 195 flow. Second operand 3 states and 168 transitions. [2024-11-27 20:09:44,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 267 flow [2024-11-27 20:09:44,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 76 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:09:44,793 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 192 flow [2024-11-27 20:09:44,793 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2024-11-27 20:09:44,797 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -3 predicate places. [2024-11-27 20:09:44,797 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 192 flow [2024-11-27 20:09:44,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:44,797 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:09:44,797 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:44,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:09:44,798 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:09:44,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:44,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1311905479, now seen corresponding path program 1 times [2024-11-27 20:09:44,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:44,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557982695] [2024-11-27 20:09:44,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:44,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:44,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:09:44,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:44,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557982695] [2024-11-27 20:09:44,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557982695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:44,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:44,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:09:44,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006496358] [2024-11-27 20:09:44,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:44,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:09:44,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:44,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:09:44,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:09:44,931 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:09:44,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:44,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:09:44,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:09:44,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:09:45,118 INFO L124 PetriNetUnfolderBase]: 192/581 cut-off events. [2024-11-27 20:09:45,118 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-27 20:09:45,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 581 events. 192/581 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3512 event pairs, 113 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 892. Up to 306 conditions per place. [2024-11-27 20:09:45,123 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 34 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2024-11-27 20:09:45,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 76 transitions, 264 flow [2024-11-27 20:09:45,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:09:45,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:09:45,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 223 transitions. [2024-11-27 20:09:45,125 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6798780487804879 [2024-11-27 20:09:45,125 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 192 flow. Second operand 4 states and 223 transitions. [2024-11-27 20:09:45,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 76 transitions, 264 flow [2024-11-27 20:09:45,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:09:45,127 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 190 flow [2024-11-27 20:09:45,127 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2024-11-27 20:09:45,131 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2024-11-27 20:09:45,131 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 190 flow [2024-11-27 20:09:45,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:45,132 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:09:45,132 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:45,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:09:45,132 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:09:45,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash 2014278252, now seen corresponding path program 1 times [2024-11-27 20:09:45,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:45,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133434126] [2024-11-27 20:09:45,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:45,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:09:45,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:45,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133434126] [2024-11-27 20:09:45,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133434126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:09:45,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598744173] [2024-11-27 20:09:45,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:45,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:45,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:45,548 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:45,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:09:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:45,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 20:09:45,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:09:45,678 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 [2024-11-27 20:09:45,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:09:45,898 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:09:46,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:09:46,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598744173] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:09:46,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:09:46,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-27 20:09:46,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210102139] [2024-11-27 20:09:46,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:09:46,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:09:46,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:46,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:09:46,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:09:46,916 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-27 20:09:46,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 190 flow. Second operand has 13 states, 13 states have (on average 45.61538461538461) internal successors, (593), 13 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:46,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:09:46,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-27 20:09:46,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:09:47,458 INFO L124 PetriNetUnfolderBase]: 194/586 cut-off events. [2024-11-27 20:09:47,458 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-27 20:09:47,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 586 events. 194/586 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3533 event pairs, 113 based on Foata normal form. 0/433 useless extension candidates. Maximal degree in co-relation 897. Up to 301 conditions per place. [2024-11-27 20:09:47,463 INFO L140 encePairwiseOnDemand]: 74/82 looper letters, 28 selfloop transitions, 16 changer transitions 0/81 dead transitions. [2024-11-27 20:09:47,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 81 transitions, 304 flow [2024-11-27 20:09:47,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:09:47,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-27 20:09:47,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 442 transitions. [2024-11-27 20:09:47,466 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5989159891598916 [2024-11-27 20:09:47,466 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 190 flow. Second operand 9 states and 442 transitions. [2024-11-27 20:09:47,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 81 transitions, 304 flow [2024-11-27 20:09:47,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 81 transitions, 294 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:09:47,472 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 238 flow [2024-11-27 20:09:47,472 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=238, PETRI_PLACES=80, PETRI_TRANSITIONS=81} [2024-11-27 20:09:47,473 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 2 predicate places. [2024-11-27 20:09:47,473 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 81 transitions, 238 flow [2024-11-27 20:09:47,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 45.61538461538461) internal successors, (593), 13 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:47,473 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:09:47,473 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:47,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:09:47,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:47,675 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:09:47,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:47,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1981879896, now seen corresponding path program 1 times [2024-11-27 20:09:47,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:47,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872830752] [2024-11-27 20:09:47,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:47,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:47,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:09:47,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:47,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872830752] [2024-11-27 20:09:47,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872830752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:47,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:47,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:09:47,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853713282] [2024-11-27 20:09:47,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:47,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:09:47,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:47,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:09:47,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:09:48,036 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-27 20:09:48,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 45.8) internal successors, (229), 5 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:48,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:09:48,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-27 20:09:48,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:09:48,233 INFO L124 PetriNetUnfolderBase]: 194/588 cut-off events. [2024-11-27 20:09:48,233 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-27 20:09:48,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956 conditions, 588 events. 194/588 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3510 event pairs, 113 based on Foata normal form. 0/433 useless extension candidates. Maximal degree in co-relation 910. Up to 317 conditions per place. [2024-11-27 20:09:48,237 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 44 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2024-11-27 20:09:48,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 83 transitions, 338 flow [2024-11-27 20:09:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:09:48,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:09:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-27 20:09:48,238 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6585365853658537 [2024-11-27 20:09:48,238 INFO L175 Difference]: Start difference. First operand has 80 places, 81 transitions, 238 flow. Second operand 4 states and 216 transitions. [2024-11-27 20:09:48,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 83 transitions, 338 flow [2024-11-27 20:09:48,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 83 transitions, 319 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-27 20:09:48,241 INFO L231 Difference]: Finished difference. Result has 81 places, 82 transitions, 238 flow [2024-11-27 20:09:48,241 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=81, PETRI_TRANSITIONS=82} [2024-11-27 20:09:48,241 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2024-11-27 20:09:48,242 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 82 transitions, 238 flow [2024-11-27 20:09:48,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.8) internal successors, (229), 5 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:48,242 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:09:48,242 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:48,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:09:48,242 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:09:48,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:48,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1916036358, now seen corresponding path program 1 times [2024-11-27 20:09:48,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:48,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907779130] [2024-11-27 20:09:48,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:48,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:48,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:09:48,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:48,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907779130] [2024-11-27 20:09:48,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907779130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:09:48,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802522364] [2024-11-27 20:09:48,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:48,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:48,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:48,398 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:48,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:09:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:48,494 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:09:48,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:09:48,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:09:48,580 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:09:48,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:09:48,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802522364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:09:48,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:09:48,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-27 20:09:48,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947532586] [2024-11-27 20:09:48,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:09:48,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 20:09:48,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:48,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 20:09:48,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:09:48,886 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:09:48,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 82 transitions, 238 flow. Second operand has 14 states, 14 states have (on average 47.785714285714285) internal successors, (669), 14 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:48,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:09:48,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:09:48,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:09:49,275 INFO L124 PetriNetUnfolderBase]: 377/1135 cut-off events. [2024-11-27 20:09:49,276 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-27 20:09:49,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1818 conditions, 1135 events. 377/1135 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8118 event pairs, 225 based on Foata normal form. 1/849 useless extension candidates. Maximal degree in co-relation 903. Up to 301 conditions per place. [2024-11-27 20:09:49,300 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 59 selfloop transitions, 21 changer transitions 0/117 dead transitions. [2024-11-27 20:09:49,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 117 transitions, 499 flow [2024-11-27 20:09:49,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:09:49,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-27 20:09:49,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 485 transitions. [2024-11-27 20:09:49,306 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6571815718157181 [2024-11-27 20:09:49,306 INFO L175 Difference]: Start difference. First operand has 81 places, 82 transitions, 238 flow. Second operand 9 states and 485 transitions. [2024-11-27 20:09:49,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 117 transitions, 499 flow [2024-11-27 20:09:49,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 117 transitions, 491 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:09:49,310 INFO L231 Difference]: Finished difference. Result has 91 places, 92 transitions, 354 flow [2024-11-27 20:09:49,311 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=354, PETRI_PLACES=91, PETRI_TRANSITIONS=92} [2024-11-27 20:09:49,311 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2024-11-27 20:09:49,311 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 92 transitions, 354 flow [2024-11-27 20:09:49,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 47.785714285714285) internal successors, (669), 14 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:49,314 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:09:49,314 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:49,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:09:49,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:49,519 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:09:49,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:49,520 INFO L85 PathProgramCache]: Analyzing trace with hash 732416559, now seen corresponding path program 1 times [2024-11-27 20:09:49,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:49,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674460015] [2024-11-27 20:09:49,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:49,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:49,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:09:49,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:49,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674460015] [2024-11-27 20:09:49,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674460015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:09:49,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011820679] [2024-11-27 20:09:49,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:49,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:49,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:49,835 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:49,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:09:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:49,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-27 20:09:49,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:09:50,025 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 8 treesize of output 1 [2024-11-27 20:09:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:09:50,032 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:09:50,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011820679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:50,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:09:50,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-11-27 20:09:50,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521850191] [2024-11-27 20:09:50,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:50,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:09:50,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:50,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:09:50,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:09:50,105 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-27 20:09:50,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 92 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:50,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:09:50,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-27 20:09:50,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:09:50,421 INFO L124 PetriNetUnfolderBase]: 386/1170 cut-off events. [2024-11-27 20:09:50,422 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-27 20:09:50,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1911 conditions, 1170 events. 386/1170 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8419 event pairs, 226 based on Foata normal form. 0/861 useless extension candidates. Maximal degree in co-relation 932. Up to 630 conditions per place. [2024-11-27 20:09:50,432 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 55 selfloop transitions, 5 changer transitions 0/95 dead transitions. [2024-11-27 20:09:50,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 95 transitions, 480 flow [2024-11-27 20:09:50,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:09:50,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:09:50,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-27 20:09:50,437 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6585365853658537 [2024-11-27 20:09:50,438 INFO L175 Difference]: Start difference. First operand has 91 places, 92 transitions, 354 flow. Second operand 4 states and 216 transitions. [2024-11-27 20:09:50,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 95 transitions, 480 flow [2024-11-27 20:09:50,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 95 transitions, 476 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-27 20:09:50,445 INFO L231 Difference]: Finished difference. Result has 94 places, 94 transitions, 374 flow [2024-11-27 20:09:50,446 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=374, PETRI_PLACES=94, PETRI_TRANSITIONS=94} [2024-11-27 20:09:50,446 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 16 predicate places. [2024-11-27 20:09:50,446 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 374 flow [2024-11-27 20:09:50,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:50,447 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:09:50,447 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:50,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 20:09:50,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:50,653 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:09:50,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:50,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2049702642, now seen corresponding path program 2 times [2024-11-27 20:09:50,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:50,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592737212] [2024-11-27 20:09:50,654 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:09:50,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:50,696 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:09:50,697 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:09:51,064 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 20:09:51,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:51,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592737212] [2024-11-27 20:09:51,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592737212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:09:51,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391647682] [2024-11-27 20:09:51,065 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:09:51,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:51,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:51,068 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:51,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:09:51,197 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:09:51,197 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:09:51,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-27 20:09:51,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:09:51,346 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 8 treesize of output 1 [2024-11-27 20:09:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:09:51,422 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:09:51,647 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:09:51,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391647682] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:09:51,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:09:51,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-27 20:09:51,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134538152] [2024-11-27 20:09:51,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:09:51,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 20:09:51,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:51,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 20:09:51,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:09:52,880 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-27 20:09:52,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 374 flow. Second operand has 17 states, 17 states have (on average 46.1764705882353) internal successors, (785), 17 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:52,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:09:52,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-27 20:09:52,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:09:54,063 INFO L124 PetriNetUnfolderBase]: 380/1143 cut-off events. [2024-11-27 20:09:54,063 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-27 20:09:54,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1898 conditions, 1143 events. 380/1143 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8163 event pairs, 225 based on Foata normal form. 0/858 useless extension candidates. Maximal degree in co-relation 933. Up to 308 conditions per place. [2024-11-27 20:09:54,072 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 71 selfloop transitions, 19 changer transitions 0/125 dead transitions. [2024-11-27 20:09:54,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 125 transitions, 645 flow [2024-11-27 20:09:54,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 20:09:54,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-27 20:09:54,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 738 transitions. [2024-11-27 20:09:54,076 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-27 20:09:54,076 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 374 flow. Second operand 15 states and 738 transitions. [2024-11-27 20:09:54,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 125 transitions, 645 flow [2024-11-27 20:09:54,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 125 transitions, 636 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:09:54,082 INFO L231 Difference]: Finished difference. Result has 107 places, 97 transitions, 433 flow [2024-11-27 20:09:54,082 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=433, PETRI_PLACES=107, PETRI_TRANSITIONS=97} [2024-11-27 20:09:54,083 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 29 predicate places. [2024-11-27 20:09:54,083 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 97 transitions, 433 flow [2024-11-27 20:09:54,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 46.1764705882353) internal successors, (785), 17 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:54,083 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:09:54,084 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:54,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:09:54,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 20:09:54,288 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:09:54,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:54,289 INFO L85 PathProgramCache]: Analyzing trace with hash -522292630, now seen corresponding path program 1 times [2024-11-27 20:09:54,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:54,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527664699] [2024-11-27 20:09:54,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:54,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:09:54,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:54,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527664699] [2024-11-27 20:09:54,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527664699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:09:54,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105465562] [2024-11-27 20:09:54,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:54,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:54,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:54,468 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:54,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:09:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:54,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:09:54,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:09:54,673 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:09:54,673 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:09:54,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:09:54,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105465562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:09:54,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:09:54,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-27 20:09:54,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142617553] [2024-11-27 20:09:54,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:09:54,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 20:09:54,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:54,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 20:09:54,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:09:54,994 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:09:54,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 97 transitions, 433 flow. Second operand has 14 states, 14 states have (on average 48.0) internal successors, (672), 14 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:54,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:09:54,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:09:54,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:09:55,603 INFO L124 PetriNetUnfolderBase]: 751/2255 cut-off events. [2024-11-27 20:09:55,603 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-11-27 20:09:55,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3683 conditions, 2255 events. 751/2255 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 19189 event pairs, 450 based on Foata normal form. 2/1691 useless extension candidates. Maximal degree in co-relation 1876. Up to 601 conditions per place. [2024-11-27 20:09:55,624 INFO L140 encePairwiseOnDemand]: 71/82 looper letters, 72 selfloop transitions, 24 changer transitions 0/132 dead transitions. [2024-11-27 20:09:55,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 132 transitions, 770 flow [2024-11-27 20:09:55,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:09:55,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-27 20:09:55,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 437 transitions. [2024-11-27 20:09:55,628 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6661585365853658 [2024-11-27 20:09:55,628 INFO L175 Difference]: Start difference. First operand has 107 places, 97 transitions, 433 flow. Second operand 8 states and 437 transitions. [2024-11-27 20:09:55,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 132 transitions, 770 flow [2024-11-27 20:09:55,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 132 transitions, 686 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-11-27 20:09:55,635 INFO L231 Difference]: Finished difference. Result has 107 places, 103 transitions, 485 flow [2024-11-27 20:09:55,635 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=485, PETRI_PLACES=107, PETRI_TRANSITIONS=103} [2024-11-27 20:09:55,635 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 29 predicate places. [2024-11-27 20:09:55,636 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 103 transitions, 485 flow [2024-11-27 20:09:55,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 48.0) internal successors, (672), 14 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:55,636 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:09:55,636 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:55,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:09:55,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 20:09:55,837 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:09:55,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:55,838 INFO L85 PathProgramCache]: Analyzing trace with hash -522206037, now seen corresponding path program 1 times [2024-11-27 20:09:55,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:55,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317151609] [2024-11-27 20:09:55,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:55,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:09:55,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:55,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317151609] [2024-11-27 20:09:55,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317151609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:55,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:55,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:09:55,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049045753] [2024-11-27 20:09:55,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:55,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:09:55,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:55,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:09:55,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:09:55,994 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:09:55,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 485 flow. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:55,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:09:55,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:09:55,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:09:56,385 INFO L124 PetriNetUnfolderBase]: 761/2309 cut-off events. [2024-11-27 20:09:56,385 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-11-27 20:09:56,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3751 conditions, 2309 events. 761/2309 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 19687 event pairs, 452 based on Foata normal form. 4/1708 useless extension candidates. Maximal degree in co-relation 1913. Up to 1225 conditions per place. [2024-11-27 20:09:56,401 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 57 selfloop transitions, 9 changer transitions 0/102 dead transitions. [2024-11-27 20:09:56,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 102 transitions, 607 flow [2024-11-27 20:09:56,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:09:56,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:09:56,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 221 transitions. [2024-11-27 20:09:56,404 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6737804878048781 [2024-11-27 20:09:56,404 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 485 flow. Second operand 4 states and 221 transitions. [2024-11-27 20:09:56,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 102 transitions, 607 flow [2024-11-27 20:09:56,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 102 transitions, 581 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-27 20:09:56,408 INFO L231 Difference]: Finished difference. Result has 108 places, 101 transitions, 463 flow [2024-11-27 20:09:56,409 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=463, PETRI_PLACES=108, PETRI_TRANSITIONS=101} [2024-11-27 20:09:56,409 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 30 predicate places. [2024-11-27 20:09:56,410 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 101 transitions, 463 flow [2024-11-27 20:09:56,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:56,410 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:09:56,410 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:56,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:09:56,410 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:09:56,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:56,411 INFO L85 PathProgramCache]: Analyzing trace with hash 588073510, now seen corresponding path program 1 times [2024-11-27 20:09:56,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:56,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864019293] [2024-11-27 20:09:56,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:56,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:57,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:09:57,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:57,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864019293] [2024-11-27 20:09:57,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864019293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:09:57,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496916521] [2024-11-27 20:09:57,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:57,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:57,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:57,026 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:57,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:09:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:57,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-27 20:09:57,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:09:57,158 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 6 treesize of output 5 [2024-11-27 20:09:57,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:09:57,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-27 20:09:57,273 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-27 20:09:57,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-27 20:09:57,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:09:57,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-27 20:09:57,363 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-27 20:09:57,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-27 20:09:57,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:09:57,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-27 20:09:57,424 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-27 20:09:57,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-27 20:09:57,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:09:57,494 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:09:57,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496916521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:57,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:09:57,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2024-11-27 20:09:57,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232638388] [2024-11-27 20:09:57,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:57,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:09:57,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:57,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:09:57,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:09:57,763 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 82 [2024-11-27 20:09:57,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 101 transitions, 463 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:57,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:09:57,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 82 [2024-11-27 20:09:57,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:09:58,152 INFO L124 PetriNetUnfolderBase]: 849/2205 cut-off events. [2024-11-27 20:09:58,152 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-11-27 20:09:58,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3792 conditions, 2205 events. 849/2205 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 17246 event pairs, 524 based on Foata normal form. 0/1756 useless extension candidates. Maximal degree in co-relation 1927. Up to 1372 conditions per place. [2024-11-27 20:09:58,165 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 63 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2024-11-27 20:09:58,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 93 transitions, 579 flow [2024-11-27 20:09:58,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:09:58,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:09:58,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2024-11-27 20:09:58,166 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5579268292682927 [2024-11-27 20:09:58,166 INFO L175 Difference]: Start difference. First operand has 108 places, 101 transitions, 463 flow. Second operand 4 states and 183 transitions. [2024-11-27 20:09:58,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 93 transitions, 579 flow [2024-11-27 20:09:58,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 93 transitions, 561 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:09:58,170 INFO L231 Difference]: Finished difference. Result has 100 places, 93 transitions, 435 flow [2024-11-27 20:09:58,170 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=435, PETRI_PLACES=100, PETRI_TRANSITIONS=93} [2024-11-27 20:09:58,171 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2024-11-27 20:09:58,171 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 93 transitions, 435 flow [2024-11-27 20:09:58,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:58,171 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:09:58,171 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:58,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 20:09:58,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:58,376 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:09:58,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:58,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1869205609, now seen corresponding path program 2 times [2024-11-27 20:09:58,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:58,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386438184] [2024-11-27 20:09:58,376 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:09:58,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:58,404 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:09:58,404 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:09:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:09:58,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:58,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386438184] [2024-11-27 20:09:58,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386438184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:09:58,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895668024] [2024-11-27 20:09:58,665 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:09:58,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:58,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:58,668 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:58,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:09:58,795 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:09:58,796 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:09:58,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 20:09:58,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:09:58,854 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 8 treesize of output 1 [2024-11-27 20:09:58,978 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:09:58,978 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:09:59,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:09:59,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895668024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:09:59,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:09:59,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 12 [2024-11-27 20:09:59,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969704310] [2024-11-27 20:09:59,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:09:59,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 20:09:59,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:59,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 20:09:59,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:09:59,878 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-27 20:09:59,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 93 transitions, 435 flow. Second operand has 14 states, 14 states have (on average 46.57142857142857) internal successors, (652), 14 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:59,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:09:59,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-27 20:09:59,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:10:00,433 INFO L124 PetriNetUnfolderBase]: 761/2075 cut-off events. [2024-11-27 20:10:00,433 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-27 20:10:00,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3504 conditions, 2075 events. 761/2075 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 16237 event pairs, 452 based on Foata normal form. 0/1635 useless extension candidates. Maximal degree in co-relation 1785. Up to 1211 conditions per place. [2024-11-27 20:10:00,450 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 47 selfloop transitions, 19 changer transitions 0/93 dead transitions. [2024-11-27 20:10:00,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 93 transitions, 567 flow [2024-11-27 20:10:00,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:10:00,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-27 20:10:00,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 393 transitions. [2024-11-27 20:10:00,452 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5990853658536586 [2024-11-27 20:10:00,452 INFO L175 Difference]: Start difference. First operand has 100 places, 93 transitions, 435 flow. Second operand 8 states and 393 transitions. [2024-11-27 20:10:00,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 93 transitions, 567 flow [2024-11-27 20:10:00,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 93 transitions, 563 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:10:00,459 INFO L231 Difference]: Finished difference. Result has 104 places, 93 transitions, 469 flow [2024-11-27 20:10:00,460 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=469, PETRI_PLACES=104, PETRI_TRANSITIONS=93} [2024-11-27 20:10:00,460 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 26 predicate places. [2024-11-27 20:10:00,460 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 93 transitions, 469 flow [2024-11-27 20:10:00,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 46.57142857142857) internal successors, (652), 14 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:00,461 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:10:00,461 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:00,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:10:00,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:00,666 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:10:00,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:00,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1050410624, now seen corresponding path program 1 times [2024-11-27 20:10:00,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:00,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853214746] [2024-11-27 20:10:00,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:00,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:10:00,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:00,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853214746] [2024-11-27 20:10:00,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853214746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:00,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:00,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:10:00,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814297505] [2024-11-27 20:10:00,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:00,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:10:00,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:00,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:10:00,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:10:00,997 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 82 [2024-11-27 20:10:00,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 93 transitions, 469 flow. Second operand has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:00,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:10:00,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 82 [2024-11-27 20:10:00,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:10:01,347 INFO L124 PetriNetUnfolderBase]: 865/2091 cut-off events. [2024-11-27 20:10:01,347 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-11-27 20:10:01,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3711 conditions, 2091 events. 865/2091 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 15330 event pairs, 532 based on Foata normal form. 0/1831 useless extension candidates. Maximal degree in co-relation 1890. Up to 1378 conditions per place. [2024-11-27 20:10:01,361 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 62 selfloop transitions, 5 changer transitions 0/89 dead transitions. [2024-11-27 20:10:01,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 89 transitions, 595 flow [2024-11-27 20:10:01,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:10:01,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:10:01,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-11-27 20:10:01,362 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5945121951219512 [2024-11-27 20:10:01,362 INFO L175 Difference]: Start difference. First operand has 104 places, 93 transitions, 469 flow. Second operand 4 states and 195 transitions. [2024-11-27 20:10:01,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 89 transitions, 595 flow [2024-11-27 20:10:01,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 89 transitions, 535 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-27 20:10:01,366 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 411 flow [2024-11-27 20:10:01,367 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=411, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2024-11-27 20:10:01,367 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 18 predicate places. [2024-11-27 20:10:01,368 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 411 flow [2024-11-27 20:10:01,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:01,369 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:10:01,369 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:01,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:10:01,369 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:10:01,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:01,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1050410625, now seen corresponding path program 1 times [2024-11-27 20:10:01,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:01,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960469283] [2024-11-27 20:10:01,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:01,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:10:01,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:01,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960469283] [2024-11-27 20:10:01,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960469283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:10:01,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854808485] [2024-11-27 20:10:01,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:01,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:01,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:01,848 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:10:01,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:10:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:01,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-27 20:10:01,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:10:01,985 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 6 treesize of output 5 [2024-11-27 20:10:02,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:10:02,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-27 20:10:02,115 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-27 20:10:02,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-27 20:10:02,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:10:02,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-27 20:10:02,194 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-27 20:10:02,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-27 20:10:02,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:10:02,273 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:10:02,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854808485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:02,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:10:02,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-27 20:10:02,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143680637] [2024-11-27 20:10:02,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:02,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:10:02,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:02,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:10:02,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:10:02,534 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 82 [2024-11-27 20:10:02,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 411 flow. Second operand has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 7 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:02,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:10:02,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 82 [2024-11-27 20:10:02,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:10:02,910 INFO L124 PetriNetUnfolderBase]: 865/1967 cut-off events. [2024-11-27 20:10:02,910 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-11-27 20:10:02,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3545 conditions, 1967 events. 865/1967 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13748 event pairs, 532 based on Foata normal form. 0/1704 useless extension candidates. Maximal degree in co-relation 1809. Up to 1378 conditions per place. [2024-11-27 20:10:02,920 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 60 selfloop transitions, 7 changer transitions 0/85 dead transitions. [2024-11-27 20:10:02,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 85 transitions, 537 flow [2024-11-27 20:10:02,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:10:02,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:10:02,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 214 transitions. [2024-11-27 20:10:02,922 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5219512195121951 [2024-11-27 20:10:02,923 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 411 flow. Second operand 5 states and 214 transitions. [2024-11-27 20:10:02,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 85 transitions, 537 flow [2024-11-27 20:10:02,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 85 transitions, 531 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:10:02,927 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 411 flow [2024-11-27 20:10:02,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=411, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2024-11-27 20:10:02,928 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 16 predicate places. [2024-11-27 20:10:02,928 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 411 flow [2024-11-27 20:10:02,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 7 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:02,928 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:10:02,928 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:02,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 20:10:03,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:10:03,133 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:10:03,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:03,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1797007992, now seen corresponding path program 1 times [2024-11-27 20:10:03,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:03,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229019535] [2024-11-27 20:10:03,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:03,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:03,255 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:10:03,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:03,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229019535] [2024-11-27 20:10:03,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229019535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:03,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:03,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:10:03,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388531982] [2024-11-27 20:10:03,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:03,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:10:03,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:03,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:10:03,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:10:03,344 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 82 [2024-11-27 20:10:03,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 411 flow. Second operand has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:03,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:10:03,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 82 [2024-11-27 20:10:03,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:10:03,654 INFO L124 PetriNetUnfolderBase]: 761/1779 cut-off events. [2024-11-27 20:10:03,655 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-11-27 20:10:03,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3199 conditions, 1779 events. 761/1779 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12271 event pairs, 452 based on Foata normal form. 0/1573 useless extension candidates. Maximal degree in co-relation 1639. Up to 1176 conditions per place. [2024-11-27 20:10:03,662 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 54 selfloop transitions, 12 changer transitions 0/83 dead transitions. [2024-11-27 20:10:03,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 83 transitions, 539 flow [2024-11-27 20:10:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:10:03,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:10:03,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 246 transitions. [2024-11-27 20:10:03,666 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-27 20:10:03,666 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 411 flow. Second operand 5 states and 246 transitions. [2024-11-27 20:10:03,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 83 transitions, 539 flow [2024-11-27 20:10:03,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 83 transitions, 529 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:10:03,669 INFO L231 Difference]: Finished difference. Result has 93 places, 83 transitions, 421 flow [2024-11-27 20:10:03,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=421, PETRI_PLACES=93, PETRI_TRANSITIONS=83} [2024-11-27 20:10:03,670 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 15 predicate places. [2024-11-27 20:10:03,671 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 83 transitions, 421 flow [2024-11-27 20:10:03,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:03,671 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:10:03,671 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:03,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 20:10:03,671 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:10:03,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:03,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1797007991, now seen corresponding path program 1 times [2024-11-27 20:10:03,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:03,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343356036] [2024-11-27 20:10:03,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:03,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:10:04,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:04,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343356036] [2024-11-27 20:10:04,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343356036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:10:04,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736771707] [2024-11-27 20:10:04,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:04,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:04,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:04,004 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:10:04,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:10:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:04,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 20:10:04,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:10:04,205 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 6 treesize of output 5 [2024-11-27 20:10:04,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:10:04,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 20:10:04,301 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-27 20:10:04,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-27 20:10:04,368 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:10:04,368 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:10:04,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 53 treesize of output 49 [2024-11-27 20:10:04,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:10:04,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 37 [2024-11-27 20:10:04,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:10:04,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736771707] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:10:04,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:10:04,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-27 20:10:04,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990447112] [2024-11-27 20:10:04,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:10:04,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 20:10:04,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:04,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 20:10:04,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:10:08,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:10:12,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:10:16,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:10:20,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:10:25,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:10:29,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:10:33,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:10:37,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:10:41,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:10:45,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:10:48,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:10:52,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:10:57,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:10:59,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:11:03,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:11:07,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:11:11,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:11:15,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:11:15,446 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 82 [2024-11-27 20:11:15,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 83 transitions, 421 flow. Second operand has 18 states, 18 states have (on average 30.61111111111111) internal successors, (551), 18 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:15,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:15,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 82 [2024-11-27 20:11:15,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:16,201 INFO L124 PetriNetUnfolderBase]: 1095/2375 cut-off events. [2024-11-27 20:11:16,201 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-11-27 20:11:16,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4376 conditions, 2375 events. 1095/2375 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 16681 event pairs, 480 based on Foata normal form. 0/2034 useless extension candidates. Maximal degree in co-relation 2470. Up to 752 conditions per place. [2024-11-27 20:11:16,215 INFO L140 encePairwiseOnDemand]: 67/82 looper letters, 86 selfloop transitions, 28 changer transitions 0/127 dead transitions. [2024-11-27 20:11:16,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 127 transitions, 760 flow [2024-11-27 20:11:16,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 20:11:16,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-27 20:11:16,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 460 transitions. [2024-11-27 20:11:16,218 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43151969981238275 [2024-11-27 20:11:16,218 INFO L175 Difference]: Start difference. First operand has 93 places, 83 transitions, 421 flow. Second operand 13 states and 460 transitions. [2024-11-27 20:11:16,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 127 transitions, 760 flow [2024-11-27 20:11:16,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 127 transitions, 736 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:11:16,223 INFO L231 Difference]: Finished difference. Result has 107 places, 89 transitions, 525 flow [2024-11-27 20:11:16,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=525, PETRI_PLACES=107, PETRI_TRANSITIONS=89} [2024-11-27 20:11:16,224 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 29 predicate places. [2024-11-27 20:11:16,224 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 89 transitions, 525 flow [2024-11-27 20:11:16,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 30.61111111111111) internal successors, (551), 18 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:16,224 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:16,225 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:16,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 20:11:16,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:16,429 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:11:16,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:16,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1577561333, now seen corresponding path program 2 times [2024-11-27 20:11:16,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:16,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041255577] [2024-11-27 20:11:16,430 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:11:16,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:16,465 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:11:16,465 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:11:16,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:16,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041255577] [2024-11-27 20:11:16,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041255577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:16,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133993578] [2024-11-27 20:11:16,631 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:11:16,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:16,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:16,633 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:16,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:11:16,797 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:11:16,797 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:16,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:11:16,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:16,918 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:11:16,920 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:11:17,027 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:11:17,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133993578] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:11:17,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:11:17,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-27 20:11:17,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028840544] [2024-11-27 20:11:17,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:11:17,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 20:11:17,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:17,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 20:11:17,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:11:17,331 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:11:17,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 89 transitions, 525 flow. Second operand has 14 states, 14 states have (on average 48.357142857142854) internal successors, (677), 14 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:17,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:17,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:11:17,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:17,881 INFO L124 PetriNetUnfolderBase]: 827/1915 cut-off events. [2024-11-27 20:11:17,881 INFO L125 PetriNetUnfolderBase]: For 280/304 co-relation queries the response was YES. [2024-11-27 20:11:17,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3733 conditions, 1915 events. 827/1915 cut-off events. For 280/304 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 13018 event pairs, 508 based on Foata normal form. 2/1713 useless extension candidates. Maximal degree in co-relation 2228. Up to 726 conditions per place. [2024-11-27 20:11:17,889 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 72 selfloop transitions, 23 changer transitions 0/112 dead transitions. [2024-11-27 20:11:17,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 112 transitions, 763 flow [2024-11-27 20:11:17,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:11:17,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:11:17,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 533 transitions. [2024-11-27 20:11:17,891 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-27 20:11:17,891 INFO L175 Difference]: Start difference. First operand has 107 places, 89 transitions, 525 flow. Second operand 10 states and 533 transitions. [2024-11-27 20:11:17,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 112 transitions, 763 flow [2024-11-27 20:11:17,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 112 transitions, 719 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-27 20:11:17,896 INFO L231 Difference]: Finished difference. Result has 108 places, 90 transitions, 517 flow [2024-11-27 20:11:17,897 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=517, PETRI_PLACES=108, PETRI_TRANSITIONS=90} [2024-11-27 20:11:17,897 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 30 predicate places. [2024-11-27 20:11:17,897 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 90 transitions, 517 flow [2024-11-27 20:11:17,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 48.357142857142854) internal successors, (677), 14 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:17,898 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:17,898 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:17,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 20:11:18,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:18,102 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:11:18,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:18,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1793473970, now seen corresponding path program 1 times [2024-11-27 20:11:18,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:18,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101571596] [2024-11-27 20:11:18,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:18,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:18,406 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:11:18,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:18,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101571596] [2024-11-27 20:11:18,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101571596] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:18,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713572639] [2024-11-27 20:11:18,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:18,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:18,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:18,409 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:18,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:11:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:18,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:11:18,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:18,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:11:18,807 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:11:18,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 23 treesize of output 19 [2024-11-27 20:11:19,043 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:11:19,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713572639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:11:19,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:11:19,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-27 20:11:19,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291523378] [2024-11-27 20:11:19,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:11:19,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 20:11:19,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:19,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 20:11:19,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:11:19,856 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-27 20:11:19,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 90 transitions, 517 flow. Second operand has 19 states, 19 states have (on average 46.473684210526315) internal successors, (883), 19 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:19,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:19,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-27 20:11:19,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:20,488 INFO L124 PetriNetUnfolderBase]: 953/2169 cut-off events. [2024-11-27 20:11:20,488 INFO L125 PetriNetUnfolderBase]: For 285/308 co-relation queries the response was YES. [2024-11-27 20:11:20,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4253 conditions, 2169 events. 953/2169 cut-off events. For 285/308 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 15105 event pairs, 404 based on Foata normal form. 0/1982 useless extension candidates. Maximal degree in co-relation 2492. Up to 642 conditions per place. [2024-11-27 20:11:20,495 INFO L140 encePairwiseOnDemand]: 67/82 looper letters, 95 selfloop transitions, 28 changer transitions 0/138 dead transitions. [2024-11-27 20:11:20,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 138 transitions, 928 flow [2024-11-27 20:11:20,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:11:20,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 20:11:20,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 573 transitions. [2024-11-27 20:11:20,498 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6352549889135255 [2024-11-27 20:11:20,498 INFO L175 Difference]: Start difference. First operand has 108 places, 90 transitions, 517 flow. Second operand 11 states and 573 transitions. [2024-11-27 20:11:20,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 138 transitions, 928 flow [2024-11-27 20:11:20,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 138 transitions, 905 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-27 20:11:20,502 INFO L231 Difference]: Finished difference. Result has 116 places, 94 transitions, 607 flow [2024-11-27 20:11:20,503 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=607, PETRI_PLACES=116, PETRI_TRANSITIONS=94} [2024-11-27 20:11:20,503 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 38 predicate places. [2024-11-27 20:11:20,503 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 94 transitions, 607 flow [2024-11-27 20:11:20,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 46.473684210526315) internal successors, (883), 19 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:20,504 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:20,504 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:20,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-27 20:11:20,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:20,709 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:11:20,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:20,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1793473971, now seen corresponding path program 1 times [2024-11-27 20:11:20,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:20,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766214812] [2024-11-27 20:11:20,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:20,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:20,779 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:11:20,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:20,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766214812] [2024-11-27 20:11:20,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766214812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:20,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:20,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:11:20,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883559463] [2024-11-27 20:11:20,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:20,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:11:20,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:20,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:11:20,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:11:20,835 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 82 [2024-11-27 20:11:20,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 94 transitions, 607 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:20,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:20,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 82 [2024-11-27 20:11:20,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:21,122 INFO L124 PetriNetUnfolderBase]: 901/2015 cut-off events. [2024-11-27 20:11:21,122 INFO L125 PetriNetUnfolderBase]: For 514/548 co-relation queries the response was YES. [2024-11-27 20:11:21,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4290 conditions, 2015 events. 901/2015 cut-off events. For 514/548 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 13575 event pairs, 556 based on Foata normal form. 128/1989 useless extension candidates. Maximal degree in co-relation 2577. Up to 1438 conditions per place. [2024-11-27 20:11:21,130 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 69 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2024-11-27 20:11:21,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 92 transitions, 757 flow [2024-11-27 20:11:21,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:11:21,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:11:21,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 204 transitions. [2024-11-27 20:11:21,135 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6219512195121951 [2024-11-27 20:11:21,135 INFO L175 Difference]: Start difference. First operand has 116 places, 94 transitions, 607 flow. Second operand 4 states and 204 transitions. [2024-11-27 20:11:21,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 92 transitions, 757 flow [2024-11-27 20:11:21,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 92 transitions, 732 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-27 20:11:21,141 INFO L231 Difference]: Finished difference. Result has 112 places, 92 transitions, 594 flow [2024-11-27 20:11:21,141 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=594, PETRI_PLACES=112, PETRI_TRANSITIONS=92} [2024-11-27 20:11:21,141 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 34 predicate places. [2024-11-27 20:11:21,142 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 92 transitions, 594 flow [2024-11-27 20:11:21,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:21,142 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:21,142 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:21,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 20:11:21,142 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:11:21,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:21,143 INFO L85 PathProgramCache]: Analyzing trace with hash 608199949, now seen corresponding path program 2 times [2024-11-27 20:11:21,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:21,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007284529] [2024-11-27 20:11:21,143 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:11:21,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:21,164 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:11:21,164 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:21,295 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:11:21,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:21,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007284529] [2024-11-27 20:11:21,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007284529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:21,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314416190] [2024-11-27 20:11:21,296 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:11:21,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:21,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:21,298 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:21,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 20:11:21,437 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:11:21,438 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:21,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:11:21,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:21,531 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:11:21,532 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:11:21,622 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:11:21,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314416190] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:11:21,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:11:21,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-27 20:11:21,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999466368] [2024-11-27 20:11:21,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:11:21,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 20:11:21,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:21,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 20:11:21,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:11:21,912 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:11:21,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 92 transitions, 594 flow. Second operand has 14 states, 14 states have (on average 48.5) internal successors, (679), 14 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:21,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:21,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:11:21,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:22,520 INFO L124 PetriNetUnfolderBase]: 905/2017 cut-off events. [2024-11-27 20:11:22,520 INFO L125 PetriNetUnfolderBase]: For 532/570 co-relation queries the response was YES. [2024-11-27 20:11:22,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4301 conditions, 2017 events. 905/2017 cut-off events. For 532/570 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 13291 event pairs, 558 based on Foata normal form. 2/1876 useless extension candidates. Maximal degree in co-relation 2582. Up to 812 conditions per place. [2024-11-27 20:11:22,527 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 73 selfloop transitions, 38 changer transitions 0/126 dead transitions. [2024-11-27 20:11:22,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 126 transitions, 945 flow [2024-11-27 20:11:22,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:11:22,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:11:22,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 530 transitions. [2024-11-27 20:11:22,530 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6463414634146342 [2024-11-27 20:11:22,530 INFO L175 Difference]: Start difference. First operand has 112 places, 92 transitions, 594 flow. Second operand 10 states and 530 transitions. [2024-11-27 20:11:22,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 126 transitions, 945 flow [2024-11-27 20:11:22,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 126 transitions, 933 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:11:22,538 INFO L231 Difference]: Finished difference. Result has 122 places, 103 transitions, 769 flow [2024-11-27 20:11:22,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=769, PETRI_PLACES=122, PETRI_TRANSITIONS=103} [2024-11-27 20:11:22,541 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 44 predicate places. [2024-11-27 20:11:22,542 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 103 transitions, 769 flow [2024-11-27 20:11:22,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 48.5) internal successors, (679), 14 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:22,542 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:22,542 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:22,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-27 20:11:22,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-27 20:11:22,743 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:11:22,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:22,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1354771683, now seen corresponding path program 3 times [2024-11-27 20:11:22,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:22,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294975951] [2024-11-27 20:11:22,744 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:11:22,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:22,777 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:11:22,777 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:23,064 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:11:23,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:23,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294975951] [2024-11-27 20:11:23,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294975951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:23,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:23,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:11:23,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779140441] [2024-11-27 20:11:23,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:23,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:11:23,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:23,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:11:23,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:11:23,268 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 82 [2024-11-27 20:11:23,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 103 transitions, 769 flow. Second operand has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:23,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:23,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 82 [2024-11-27 20:11:23,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:23,615 INFO L124 PetriNetUnfolderBase]: 869/1913 cut-off events. [2024-11-27 20:11:23,616 INFO L125 PetriNetUnfolderBase]: For 578/590 co-relation queries the response was YES. [2024-11-27 20:11:23,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4117 conditions, 1913 events. 869/1913 cut-off events. For 578/590 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 12458 event pairs, 539 based on Foata normal form. 40/1813 useless extension candidates. Maximal degree in co-relation 2591. Up to 1402 conditions per place. [2024-11-27 20:11:23,624 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 79 selfloop transitions, 9 changer transitions 0/101 dead transitions. [2024-11-27 20:11:23,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 101 transitions, 933 flow [2024-11-27 20:11:23,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:11:23,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:11:23,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 246 transitions. [2024-11-27 20:11:23,626 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-27 20:11:23,626 INFO L175 Difference]: Start difference. First operand has 122 places, 103 transitions, 769 flow. Second operand 5 states and 246 transitions. [2024-11-27 20:11:23,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 101 transitions, 933 flow [2024-11-27 20:11:23,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 101 transitions, 890 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-27 20:11:23,662 INFO L231 Difference]: Finished difference. Result has 117 places, 101 transitions, 732 flow [2024-11-27 20:11:23,662 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=732, PETRI_PLACES=117, PETRI_TRANSITIONS=101} [2024-11-27 20:11:23,663 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 39 predicate places. [2024-11-27 20:11:23,663 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 101 transitions, 732 flow [2024-11-27 20:11:23,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:23,663 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:23,663 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:23,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-27 20:11:23,664 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:11:23,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:23,664 INFO L85 PathProgramCache]: Analyzing trace with hash 687271560, now seen corresponding path program 3 times [2024-11-27 20:11:23,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:23,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361467437] [2024-11-27 20:11:23,665 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:11:23,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:23,687 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:11:23,687 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:11:23,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:23,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361467437] [2024-11-27 20:11:23,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361467437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:23,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122999038] [2024-11-27 20:11:23,863 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:11:23,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:23,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:23,866 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:23,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 20:11:24,027 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:11:24,027 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:24,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 20:11:24,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:24,195 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:11:24,196 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:11:24,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122999038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:24,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:11:24,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-27 20:11:24,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298075239] [2024-11-27 20:11:24,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:24,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:11:24,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:24,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:11:24,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:11:24,368 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-27 20:11:24,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 101 transitions, 732 flow. Second operand has 6 states, 6 states have (on average 47.333333333333336) internal successors, (284), 6 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:24,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:24,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-27 20:11:24,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:24,802 INFO L124 PetriNetUnfolderBase]: 841/1801 cut-off events. [2024-11-27 20:11:24,802 INFO L125 PetriNetUnfolderBase]: For 422/422 co-relation queries the response was YES. [2024-11-27 20:11:24,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3847 conditions, 1801 events. 841/1801 cut-off events. For 422/422 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 11242 event pairs, 523 based on Foata normal form. 40/1709 useless extension candidates. Maximal degree in co-relation 2502. Up to 1332 conditions per place. [2024-11-27 20:11:24,806 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 79 selfloop transitions, 9 changer transitions 0/99 dead transitions. [2024-11-27 20:11:24,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 99 transitions, 896 flow [2024-11-27 20:11:24,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:11:24,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:11:24,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 256 transitions. [2024-11-27 20:11:24,808 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.624390243902439 [2024-11-27 20:11:24,808 INFO L175 Difference]: Start difference. First operand has 117 places, 101 transitions, 732 flow. Second operand 5 states and 256 transitions. [2024-11-27 20:11:24,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 99 transitions, 896 flow [2024-11-27 20:11:24,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 99 transitions, 878 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-27 20:11:24,814 INFO L231 Difference]: Finished difference. Result has 114 places, 99 transitions, 720 flow [2024-11-27 20:11:24,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=720, PETRI_PLACES=114, PETRI_TRANSITIONS=99} [2024-11-27 20:11:24,815 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 36 predicate places. [2024-11-27 20:11:24,815 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 99 transitions, 720 flow [2024-11-27 20:11:24,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.333333333333336) internal successors, (284), 6 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:24,816 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:24,816 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:24,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-27 20:11:25,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5cef3a-5802-41ad-b2b2-b8bb86b70545/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-27 20:11:25,021 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:11:25,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:25,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2127857120, now seen corresponding path program 1 times [2024-11-27 20:11:25,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:25,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769816928] [2024-11-27 20:11:25,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:25,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:25,063 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:11:25,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:25,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769816928] [2024-11-27 20:11:25,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769816928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:25,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:25,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:11:25,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720820148] [2024-11-27 20:11:25,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:25,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:11:25,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:25,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:11:25,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:11:25,068 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2024-11-27 20:11:25,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 99 transitions, 720 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:25,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:25,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2024-11-27 20:11:25,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:25,495 INFO L124 PetriNetUnfolderBase]: 1299/2473 cut-off events. [2024-11-27 20:11:25,495 INFO L125 PetriNetUnfolderBase]: For 283/283 co-relation queries the response was YES. [2024-11-27 20:11:25,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5379 conditions, 2473 events. 1299/2473 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14835 event pairs, 631 based on Foata normal form. 0/2261 useless extension candidates. Maximal degree in co-relation 2802. Up to 1518 conditions per place. [2024-11-27 20:11:25,512 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 101 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2024-11-27 20:11:25,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 112 transitions, 962 flow [2024-11-27 20:11:25,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:11:25,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:11:25,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2024-11-27 20:11:25,514 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7276422764227642 [2024-11-27 20:11:25,514 INFO L175 Difference]: Start difference. First operand has 114 places, 99 transitions, 720 flow. Second operand 3 states and 179 transitions. [2024-11-27 20:11:25,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 112 transitions, 962 flow [2024-11-27 20:11:25,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 112 transitions, 948 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:11:25,521 INFO L231 Difference]: Finished difference. Result has 115 places, 101 transitions, 728 flow [2024-11-27 20:11:25,521 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=728, PETRI_PLACES=115, PETRI_TRANSITIONS=101} [2024-11-27 20:11:25,522 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 37 predicate places. [2024-11-27 20:11:25,522 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 101 transitions, 728 flow [2024-11-27 20:11:25,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:25,523 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:25,523 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:25,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-27 20:11:25,523 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:11:25,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:25,524 INFO L85 PathProgramCache]: Analyzing trace with hash 747553542, now seen corresponding path program 1 times [2024-11-27 20:11:25,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:25,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322545955] [2024-11-27 20:11:25,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:25,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:11:25,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:25,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322545955] [2024-11-27 20:11:25,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322545955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:25,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:25,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:11:25,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413541136] [2024-11-27 20:11:25,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:25,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:11:25,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:25,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:11:25,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:11:25,593 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2024-11-27 20:11:25,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 101 transitions, 728 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:25,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:25,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2024-11-27 20:11:25,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:26,116 INFO L124 PetriNetUnfolderBase]: 1383/2603 cut-off events. [2024-11-27 20:11:26,116 INFO L125 PetriNetUnfolderBase]: For 715/771 co-relation queries the response was YES. [2024-11-27 20:11:26,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6279 conditions, 2603 events. 1383/2603 cut-off events. For 715/771 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 15800 event pairs, 746 based on Foata normal form. 56/2473 useless extension candidates. Maximal degree in co-relation 4741. Up to 1682 conditions per place. [2024-11-27 20:11:26,134 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 102 selfloop transitions, 3 changer transitions 0/114 dead transitions. [2024-11-27 20:11:26,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 114 transitions, 980 flow [2024-11-27 20:11:26,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:11:26,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:11:26,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2024-11-27 20:11:26,136 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7235772357723578 [2024-11-27 20:11:26,136 INFO L175 Difference]: Start difference. First operand has 115 places, 101 transitions, 728 flow. Second operand 3 states and 178 transitions. [2024-11-27 20:11:26,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 114 transitions, 980 flow [2024-11-27 20:11:26,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 114 transitions, 972 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:11:26,149 INFO L231 Difference]: Finished difference. Result has 117 places, 103 transitions, 744 flow [2024-11-27 20:11:26,150 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=744, PETRI_PLACES=117, PETRI_TRANSITIONS=103} [2024-11-27 20:11:26,150 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 39 predicate places. [2024-11-27 20:11:26,151 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 103 transitions, 744 flow [2024-11-27 20:11:26,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:26,151 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:26,151 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:26,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-27 20:11:26,151 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:11:26,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:26,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1911925630, now seen corresponding path program 1 times [2024-11-27 20:11:26,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:26,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149263059] [2024-11-27 20:11:26,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:26,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:27,013 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:11:27,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:27,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149263059] [2024-11-27 20:11:27,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149263059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:27,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:27,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:11:27,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786558327] [2024-11-27 20:11:27,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:27,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:11:27,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:27,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:11:27,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:11:27,366 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:11:27,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 103 transitions, 744 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:27,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:27,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:11:27,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:28,843 INFO L124 PetriNetUnfolderBase]: 3121/6335 cut-off events. [2024-11-27 20:11:28,843 INFO L125 PetriNetUnfolderBase]: For 2221/2453 co-relation queries the response was YES. [2024-11-27 20:11:28,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15802 conditions, 6335 events. 3121/6335 cut-off events. For 2221/2453 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 51412 event pairs, 162 based on Foata normal form. 236/6497 useless extension candidates. Maximal degree in co-relation 11517. Up to 1464 conditions per place. [2024-11-27 20:11:28,872 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 177 selfloop transitions, 6 changer transitions 7/203 dead transitions. [2024-11-27 20:11:28,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 203 transitions, 1484 flow [2024-11-27 20:11:28,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:11:28,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:11:28,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 572 transitions. [2024-11-27 20:11:28,873 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.697560975609756 [2024-11-27 20:11:28,874 INFO L175 Difference]: Start difference. First operand has 117 places, 103 transitions, 744 flow. Second operand 10 states and 572 transitions. [2024-11-27 20:11:28,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 203 transitions, 1484 flow [2024-11-27 20:11:28,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 203 transitions, 1466 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:11:28,928 INFO L231 Difference]: Finished difference. Result has 132 places, 108 transitions, 791 flow [2024-11-27 20:11:28,929 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=791, PETRI_PLACES=132, PETRI_TRANSITIONS=108} [2024-11-27 20:11:28,929 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 54 predicate places. [2024-11-27 20:11:28,929 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 108 transitions, 791 flow [2024-11-27 20:11:28,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:28,930 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:28,930 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:28,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-27 20:11:28,930 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:11:28,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:28,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1579224478, now seen corresponding path program 2 times [2024-11-27 20:11:28,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:28,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554529747] [2024-11-27 20:11:28,931 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:11:28,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:28,946 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:11:28,946 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:29,476 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:11:29,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:29,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554529747] [2024-11-27 20:11:29,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554529747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:29,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:29,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:11:29,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800215672] [2024-11-27 20:11:29,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:29,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:11:29,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:29,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:11:29,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:11:30,150 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:11:30,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 108 transitions, 791 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:30,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:30,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:11:30,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:31,483 INFO L124 PetriNetUnfolderBase]: 3240/6882 cut-off events. [2024-11-27 20:11:31,484 INFO L125 PetriNetUnfolderBase]: For 4241/4487 co-relation queries the response was YES. [2024-11-27 20:11:31,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18496 conditions, 6882 events. 3240/6882 cut-off events. For 4241/4487 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 59066 event pairs, 372 based on Foata normal form. 250/7046 useless extension candidates. Maximal degree in co-relation 18295. Up to 3373 conditions per place. [2024-11-27 20:11:31,508 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 150 selfloop transitions, 8 changer transitions 6/177 dead transitions. [2024-11-27 20:11:31,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 177 transitions, 1410 flow [2024-11-27 20:11:31,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:11:31,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:11:31,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 550 transitions. [2024-11-27 20:11:31,509 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2024-11-27 20:11:31,509 INFO L175 Difference]: Start difference. First operand has 132 places, 108 transitions, 791 flow. Second operand 10 states and 550 transitions. [2024-11-27 20:11:31,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 177 transitions, 1410 flow [2024-11-27 20:11:31,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 177 transitions, 1391 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-27 20:11:31,566 INFO L231 Difference]: Finished difference. Result has 141 places, 110 transitions, 823 flow [2024-11-27 20:11:31,566 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=823, PETRI_PLACES=141, PETRI_TRANSITIONS=110} [2024-11-27 20:11:31,566 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 63 predicate places. [2024-11-27 20:11:31,566 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 110 transitions, 823 flow [2024-11-27 20:11:31,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:31,566 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:31,567 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:31,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-27 20:11:31,567 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:11:31,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:31,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1567155768, now seen corresponding path program 3 times [2024-11-27 20:11:31,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:31,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983400951] [2024-11-27 20:11:31,567 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:11:31,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:31,582 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:11:31,583 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:11:32,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:32,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983400951] [2024-11-27 20:11:32,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983400951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:32,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:32,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:11:32,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146099073] [2024-11-27 20:11:32,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:32,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:11:32,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:32,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:11:32,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:11:32,881 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:11:32,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 110 transitions, 823 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:32,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:32,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:11:32,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:34,908 INFO L124 PetriNetUnfolderBase]: 3507/7709 cut-off events. [2024-11-27 20:11:34,908 INFO L125 PetriNetUnfolderBase]: For 8285/8597 co-relation queries the response was YES. [2024-11-27 20:11:34,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21903 conditions, 7709 events. 3507/7709 cut-off events. For 8285/8597 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 69460 event pairs, 706 based on Foata normal form. 316/7889 useless extension candidates. Maximal degree in co-relation 21555. Up to 3788 conditions per place. [2024-11-27 20:11:34,961 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 149 selfloop transitions, 11 changer transitions 7/180 dead transitions. [2024-11-27 20:11:34,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 180 transitions, 1460 flow [2024-11-27 20:11:34,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:11:34,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:11:34,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 557 transitions. [2024-11-27 20:11:34,963 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6792682926829269 [2024-11-27 20:11:34,964 INFO L175 Difference]: Start difference. First operand has 141 places, 110 transitions, 823 flow. Second operand 10 states and 557 transitions. [2024-11-27 20:11:34,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 180 transitions, 1460 flow [2024-11-27 20:11:35,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 180 transitions, 1404 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-11-27 20:11:35,074 INFO L231 Difference]: Finished difference. Result has 148 places, 112 transitions, 854 flow [2024-11-27 20:11:35,074 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=854, PETRI_PLACES=148, PETRI_TRANSITIONS=112} [2024-11-27 20:11:35,074 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 70 predicate places. [2024-11-27 20:11:35,075 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 112 transitions, 854 flow [2024-11-27 20:11:35,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:35,075 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:35,075 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:35,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-27 20:11:35,075 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:11:35,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:35,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1096392210, now seen corresponding path program 4 times [2024-11-27 20:11:35,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:35,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031015415] [2024-11-27 20:11:35,077 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:11:35,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:35,094 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:11:35,094 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:35,642 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:11:35,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:35,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031015415] [2024-11-27 20:11:35,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031015415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:35,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:35,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:11:35,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292723398] [2024-11-27 20:11:35,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:35,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:11:35,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:35,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:11:35,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:11:36,336 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:11:36,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 112 transitions, 854 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:36,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:36,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:11:36,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:38,267 INFO L124 PetriNetUnfolderBase]: 3686/8380 cut-off events. [2024-11-27 20:11:38,267 INFO L125 PetriNetUnfolderBase]: For 11199/11465 co-relation queries the response was YES. [2024-11-27 20:11:38,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24280 conditions, 8380 events. 3686/8380 cut-off events. For 11199/11465 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 77904 event pairs, 496 based on Foata normal form. 270/8555 useless extension candidates. Maximal degree in co-relation 23881. Up to 4763 conditions per place. [2024-11-27 20:11:38,342 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 155 selfloop transitions, 11 changer transitions 6/185 dead transitions. [2024-11-27 20:11:38,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 185 transitions, 1576 flow [2024-11-27 20:11:38,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:11:38,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:11:38,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 556 transitions. [2024-11-27 20:11:38,345 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6780487804878049 [2024-11-27 20:11:38,345 INFO L175 Difference]: Start difference. First operand has 148 places, 112 transitions, 854 flow. Second operand 10 states and 556 transitions. [2024-11-27 20:11:38,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 185 transitions, 1576 flow [2024-11-27 20:11:38,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 185 transitions, 1511 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-11-27 20:11:38,593 INFO L231 Difference]: Finished difference. Result has 155 places, 115 transitions, 889 flow [2024-11-27 20:11:38,593 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=889, PETRI_PLACES=155, PETRI_TRANSITIONS=115} [2024-11-27 20:11:38,594 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 77 predicate places. [2024-11-27 20:11:38,594 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 115 transitions, 889 flow [2024-11-27 20:11:38,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:38,595 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:38,595 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:38,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-27 20:11:38,595 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:11:38,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:38,596 INFO L85 PathProgramCache]: Analyzing trace with hash -558556424, now seen corresponding path program 5 times [2024-11-27 20:11:38,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:38,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583988037] [2024-11-27 20:11:38,596 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:11:38,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:38,648 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-27 20:11:38,650 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:39,582 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:11:39,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:39,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583988037] [2024-11-27 20:11:39,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583988037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:39,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:39,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:11:39,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637056889] [2024-11-27 20:11:39,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:39,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:11:39,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:39,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:11:39,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:11:40,507 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:11:40,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 115 transitions, 889 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:40,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:40,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:11:40,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:42,909 INFO L124 PetriNetUnfolderBase]: 3869/8807 cut-off events. [2024-11-27 20:11:42,909 INFO L125 PetriNetUnfolderBase]: For 16630/16934 co-relation queries the response was YES. [2024-11-27 20:11:42,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26771 conditions, 8807 events. 3869/8807 cut-off events. For 16630/16934 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 82618 event pairs, 790 based on Foata normal form. 308/8977 useless extension candidates. Maximal degree in co-relation 26321. Up to 5340 conditions per place. [2024-11-27 20:11:42,988 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 155 selfloop transitions, 14 changer transitions 7/189 dead transitions. [2024-11-27 20:11:42,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 189 transitions, 1618 flow [2024-11-27 20:11:42,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:11:42,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:11:42,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 559 transitions. [2024-11-27 20:11:42,990 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6817073170731708 [2024-11-27 20:11:42,990 INFO L175 Difference]: Start difference. First operand has 155 places, 115 transitions, 889 flow. Second operand 10 states and 559 transitions. [2024-11-27 20:11:42,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 189 transitions, 1618 flow [2024-11-27 20:11:43,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 189 transitions, 1543 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-27 20:11:43,149 INFO L231 Difference]: Finished difference. Result has 161 places, 118 transitions, 929 flow [2024-11-27 20:11:43,149 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=929, PETRI_PLACES=161, PETRI_TRANSITIONS=118} [2024-11-27 20:11:43,150 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 83 predicate places. [2024-11-27 20:11:43,150 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 118 transitions, 929 flow [2024-11-27 20:11:43,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:43,150 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:43,150 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:43,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-27 20:11:43,151 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:11:43,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:43,151 INFO L85 PathProgramCache]: Analyzing trace with hash -596185512, now seen corresponding path program 6 times [2024-11-27 20:11:43,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:43,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330113743] [2024-11-27 20:11:43,152 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:11:43,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:43,169 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-27 20:11:43,169 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:43,694 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:11:43,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:43,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330113743] [2024-11-27 20:11:43,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330113743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:43,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:43,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:11:43,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648014685] [2024-11-27 20:11:43,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:43,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:11:43,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:43,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:11:43,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:11:44,128 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:11:44,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 118 transitions, 929 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:44,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:44,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:11:44,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:45,959 INFO L124 PetriNetUnfolderBase]: 4571/10327 cut-off events. [2024-11-27 20:11:45,960 INFO L125 PetriNetUnfolderBase]: For 23789/24187 co-relation queries the response was YES. [2024-11-27 20:11:46,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32416 conditions, 10327 events. 4571/10327 cut-off events. For 23789/24187 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 99435 event pairs, 1105 based on Foata normal form. 402/10550 useless extension candidates. Maximal degree in co-relation 31883. Up to 5711 conditions per place. [2024-11-27 20:11:46,052 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 166 selfloop transitions, 14 changer transitions 6/199 dead transitions. [2024-11-27 20:11:46,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 199 transitions, 1752 flow [2024-11-27 20:11:46,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:11:46,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:11:46,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 561 transitions. [2024-11-27 20:11:46,054 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6841463414634147 [2024-11-27 20:11:46,054 INFO L175 Difference]: Start difference. First operand has 161 places, 118 transitions, 929 flow. Second operand 10 states and 561 transitions. [2024-11-27 20:11:46,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 199 transitions, 1752 flow [2024-11-27 20:11:46,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 199 transitions, 1666 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-11-27 20:11:46,290 INFO L231 Difference]: Finished difference. Result has 169 places, 122 transitions, 986 flow [2024-11-27 20:11:46,291 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=986, PETRI_PLACES=169, PETRI_TRANSITIONS=122} [2024-11-27 20:11:46,291 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 91 predicate places. [2024-11-27 20:11:46,291 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 122 transitions, 986 flow [2024-11-27 20:11:46,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:46,291 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:46,291 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:46,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-27 20:11:46,292 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:11:46,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:46,292 INFO L85 PathProgramCache]: Analyzing trace with hash 690308464, now seen corresponding path program 7 times [2024-11-27 20:11:46,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:46,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623094135] [2024-11-27 20:11:46,293 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:11:46,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:46,975 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:11:46,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:46,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623094135] [2024-11-27 20:11:46,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623094135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:46,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:46,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:11:46,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554726561] [2024-11-27 20:11:46,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:46,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:11:46,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:46,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:11:46,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:11:47,449 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:11:47,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 122 transitions, 986 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:47,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:47,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:11:47,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:49,350 INFO L124 PetriNetUnfolderBase]: 4628/10552 cut-off events. [2024-11-27 20:11:49,351 INFO L125 PetriNetUnfolderBase]: For 28284/28658 co-relation queries the response was YES. [2024-11-27 20:11:49,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33559 conditions, 10552 events. 4628/10552 cut-off events. For 28284/28658 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 103020 event pairs, 672 based on Foata normal form. 378/10782 useless extension candidates. Maximal degree in co-relation 33005. Up to 5836 conditions per place. [2024-11-27 20:11:49,414 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 170 selfloop transitions, 15 changer transitions 7/205 dead transitions. [2024-11-27 20:11:49,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 205 transitions, 1829 flow [2024-11-27 20:11:49,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:11:49,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:11:49,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 563 transitions. [2024-11-27 20:11:49,416 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6865853658536586 [2024-11-27 20:11:49,416 INFO L175 Difference]: Start difference. First operand has 169 places, 122 transitions, 986 flow. Second operand 10 states and 563 transitions. [2024-11-27 20:11:49,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 205 transitions, 1829 flow [2024-11-27 20:11:49,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 205 transitions, 1780 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-11-27 20:11:49,571 INFO L231 Difference]: Finished difference. Result has 179 places, 126 transitions, 1061 flow [2024-11-27 20:11:49,571 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1061, PETRI_PLACES=179, PETRI_TRANSITIONS=126} [2024-11-27 20:11:49,571 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 101 predicate places. [2024-11-27 20:11:49,571 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 126 transitions, 1061 flow [2024-11-27 20:11:49,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:49,572 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:49,572 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:49,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-27 20:11:49,572 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:11:49,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:49,573 INFO L85 PathProgramCache]: Analyzing trace with hash 855799700, now seen corresponding path program 8 times [2024-11-27 20:11:49,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:49,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801453810] [2024-11-27 20:11:49,573 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:11:49,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:49,584 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:11:49,584 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:50,059 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:11:50,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:50,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801453810] [2024-11-27 20:11:50,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801453810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:50,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:50,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:11:50,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076191538] [2024-11-27 20:11:50,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:50,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:11:50,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:50,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:11:50,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:11:50,625 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:11:50,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 126 transitions, 1061 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:50,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:50,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:11:50,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:52,797 INFO L124 PetriNetUnfolderBase]: 4630/10534 cut-off events. [2024-11-27 20:11:52,797 INFO L125 PetriNetUnfolderBase]: For 36103/36503 co-relation queries the response was YES. [2024-11-27 20:11:52,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34956 conditions, 10534 events. 4630/10534 cut-off events. For 36103/36503 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 101641 event pairs, 1420 based on Foata normal form. 404/10701 useless extension candidates. Maximal degree in co-relation 34381. Up to 4852 conditions per place. [2024-11-27 20:11:52,864 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 180 selfloop transitions, 13 changer transitions 6/212 dead transitions. [2024-11-27 20:11:52,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 212 transitions, 1947 flow [2024-11-27 20:11:52,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:11:52,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:11:52,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 568 transitions. [2024-11-27 20:11:52,866 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6926829268292682 [2024-11-27 20:11:52,866 INFO L175 Difference]: Start difference. First operand has 179 places, 126 transitions, 1061 flow. Second operand 10 states and 568 transitions. [2024-11-27 20:11:52,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 212 transitions, 1947 flow [2024-11-27 20:11:53,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 212 transitions, 1898 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-11-27 20:11:53,055 INFO L231 Difference]: Finished difference. Result has 190 places, 131 transitions, 1149 flow [2024-11-27 20:11:53,055 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1149, PETRI_PLACES=190, PETRI_TRANSITIONS=131} [2024-11-27 20:11:53,055 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 112 predicate places. [2024-11-27 20:11:53,055 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 131 transitions, 1149 flow [2024-11-27 20:11:53,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:53,056 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:53,056 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:53,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-27 20:11:53,056 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:11:53,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:53,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1304406516, now seen corresponding path program 9 times [2024-11-27 20:11:53,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:53,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764893787] [2024-11-27 20:11:53,056 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:11:53,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:53,068 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:11:53,068 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:53,376 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:11:53,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:53,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764893787] [2024-11-27 20:11:53,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764893787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:53,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:53,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:11:53,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817255978] [2024-11-27 20:11:53,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:53,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:11:53,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:53,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:11:53,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:11:53,620 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:11:53,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 131 transitions, 1149 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:53,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:53,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:11:53,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:55,324 INFO L124 PetriNetUnfolderBase]: 4640/10656 cut-off events. [2024-11-27 20:11:55,324 INFO L125 PetriNetUnfolderBase]: For 42750/43120 co-relation queries the response was YES. [2024-11-27 20:11:55,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36252 conditions, 10656 events. 4640/10656 cut-off events. For 42750/43120 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 104577 event pairs, 712 based on Foata normal form. 374/10886 useless extension candidates. Maximal degree in co-relation 35671. Up to 5900 conditions per place. [2024-11-27 20:11:55,475 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 176 selfloop transitions, 20 changer transitions 6/215 dead transitions. [2024-11-27 20:11:55,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 215 transitions, 2037 flow [2024-11-27 20:11:55,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:11:55,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:11:55,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 559 transitions. [2024-11-27 20:11:55,478 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6817073170731708 [2024-11-27 20:11:55,478 INFO L175 Difference]: Start difference. First operand has 190 places, 131 transitions, 1149 flow. Second operand 10 states and 559 transitions. [2024-11-27 20:11:55,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 215 transitions, 2037 flow [2024-11-27 20:11:55,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 215 transitions, 1976 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-11-27 20:11:55,766 INFO L231 Difference]: Finished difference. Result has 200 places, 134 transitions, 1221 flow [2024-11-27 20:11:55,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1221, PETRI_PLACES=200, PETRI_TRANSITIONS=134} [2024-11-27 20:11:55,767 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 122 predicate places. [2024-11-27 20:11:55,767 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 134 transitions, 1221 flow [2024-11-27 20:11:55,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:55,767 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:55,768 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:55,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-27 20:11:55,768 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:11:55,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:55,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1435133360, now seen corresponding path program 10 times [2024-11-27 20:11:55,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:55,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523896394] [2024-11-27 20:11:55,769 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:11:55,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:55,786 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:11:55,787 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:56,182 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:11:56,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:56,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523896394] [2024-11-27 20:11:56,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523896394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:56,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:56,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:11:56,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731381008] [2024-11-27 20:11:56,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:56,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:11:56,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:56,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:11:56,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:11:56,645 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:11:56,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 134 transitions, 1221 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:56,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:56,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:11:56,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:59,182 INFO L124 PetriNetUnfolderBase]: 4728/10824 cut-off events. [2024-11-27 20:11:59,182 INFO L125 PetriNetUnfolderBase]: For 46399/46801 co-relation queries the response was YES. [2024-11-27 20:11:59,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37650 conditions, 10824 events. 4728/10824 cut-off events. For 46399/46801 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 106178 event pairs, 1030 based on Foata normal form. 406/11046 useless extension candidates. Maximal degree in co-relation 37033. Up to 5900 conditions per place. [2024-11-27 20:11:59,317 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 173 selfloop transitions, 18 changer transitions 7/211 dead transitions. [2024-11-27 20:11:59,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 211 transitions, 2097 flow [2024-11-27 20:11:59,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:11:59,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:11:59,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 560 transitions. [2024-11-27 20:11:59,319 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6829268292682927 [2024-11-27 20:11:59,319 INFO L175 Difference]: Start difference. First operand has 200 places, 134 transitions, 1221 flow. Second operand 10 states and 560 transitions. [2024-11-27 20:11:59,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 211 transitions, 2097 flow [2024-11-27 20:11:59,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 211 transitions, 1988 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-11-27 20:11:59,642 INFO L231 Difference]: Finished difference. Result has 206 places, 136 transitions, 1242 flow [2024-11-27 20:11:59,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1170, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1242, PETRI_PLACES=206, PETRI_TRANSITIONS=136} [2024-11-27 20:11:59,642 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 128 predicate places. [2024-11-27 20:11:59,642 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 136 transitions, 1242 flow [2024-11-27 20:11:59,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:59,643 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:59,643 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:59,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-27 20:11:59,643 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:11:59,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:59,644 INFO L85 PathProgramCache]: Analyzing trace with hash 413002054, now seen corresponding path program 11 times [2024-11-27 20:11:59,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:59,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841217670] [2024-11-27 20:11:59,644 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:11:59,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:59,677 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-27 20:11:59,678 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:12:00,342 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:12:00,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:00,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841217670] [2024-11-27 20:12:00,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841217670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:00,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:00,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:12:00,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461391552] [2024-11-27 20:12:00,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:00,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:12:00,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:00,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:12:00,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:12:00,775 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:12:00,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 136 transitions, 1242 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:00,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:12:00,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:12:00,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:12:03,112 INFO L124 PetriNetUnfolderBase]: 4720/10808 cut-off events. [2024-11-27 20:12:03,113 INFO L125 PetriNetUnfolderBase]: For 39818/40212 co-relation queries the response was YES. [2024-11-27 20:12:03,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36864 conditions, 10808 events. 4720/10808 cut-off events. For 39818/40212 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 105802 event pairs, 1084 based on Foata normal form. 398/11038 useless extension candidates. Maximal degree in co-relation 36245. Up to 5900 conditions per place. [2024-11-27 20:12:03,542 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 174 selfloop transitions, 21 changer transitions 7/215 dead transitions. [2024-11-27 20:12:03,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 215 transitions, 2080 flow [2024-11-27 20:12:03,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:12:03,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:12:03,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 559 transitions. [2024-11-27 20:12:03,544 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6817073170731708 [2024-11-27 20:12:03,544 INFO L175 Difference]: Start difference. First operand has 206 places, 136 transitions, 1242 flow. Second operand 10 states and 559 transitions. [2024-11-27 20:12:03,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 215 transitions, 2080 flow [2024-11-27 20:12:03,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 215 transitions, 2023 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-11-27 20:12:03,786 INFO L231 Difference]: Finished difference. Result has 211 places, 138 transitions, 1284 flow [2024-11-27 20:12:03,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1284, PETRI_PLACES=211, PETRI_TRANSITIONS=138} [2024-11-27 20:12:03,787 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 133 predicate places. [2024-11-27 20:12:03,787 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 138 transitions, 1284 flow [2024-11-27 20:12:03,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:03,788 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:12:03,788 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:03,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-27 20:12:03,788 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:12:03,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:03,789 INFO L85 PathProgramCache]: Analyzing trace with hash 587042142, now seen corresponding path program 12 times [2024-11-27 20:12:03,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:03,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871362447] [2024-11-27 20:12:03,790 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:12:03,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:03,809 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-27 20:12:03,809 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:12:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:12:04,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:04,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871362447] [2024-11-27 20:12:04,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871362447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:04,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:04,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:12:04,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937006078] [2024-11-27 20:12:04,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:04,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:12:04,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:04,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:12:04,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:12:04,669 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:12:04,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 138 transitions, 1284 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:04,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:12:04,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:12:04,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:12:07,372 INFO L124 PetriNetUnfolderBase]: 4740/10928 cut-off events. [2024-11-27 20:12:07,373 INFO L125 PetriNetUnfolderBase]: For 40578/40936 co-relation queries the response was YES. [2024-11-27 20:12:07,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37321 conditions, 10928 events. 4740/10928 cut-off events. For 40578/40936 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 108035 event pairs, 804 based on Foata normal form. 362/11130 useless extension candidates. Maximal degree in co-relation 36699. Up to 5900 conditions per place. [2024-11-27 20:12:07,512 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 168 selfloop transitions, 23 changer transitions 6/210 dead transitions. [2024-11-27 20:12:07,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 210 transitions, 2081 flow [2024-11-27 20:12:07,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:12:07,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:12:07,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 553 transitions. [2024-11-27 20:12:07,514 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6743902439024391 [2024-11-27 20:12:07,514 INFO L175 Difference]: Start difference. First operand has 211 places, 138 transitions, 1284 flow. Second operand 10 states and 553 transitions. [2024-11-27 20:12:07,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 210 transitions, 2081 flow [2024-11-27 20:12:07,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 210 transitions, 2040 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-27 20:12:07,786 INFO L231 Difference]: Finished difference. Result has 216 places, 140 transitions, 1339 flow [2024-11-27 20:12:07,786 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1339, PETRI_PLACES=216, PETRI_TRANSITIONS=140} [2024-11-27 20:12:07,786 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 138 predicate places. [2024-11-27 20:12:07,787 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 140 transitions, 1339 flow [2024-11-27 20:12:07,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:07,787 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:12:07,787 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:07,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-27 20:12:07,787 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:12:07,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:07,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1299375246, now seen corresponding path program 13 times [2024-11-27 20:12:07,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:07,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175713513] [2024-11-27 20:12:07,788 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:12:07,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:12:08,517 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:12:08,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:08,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175713513] [2024-11-27 20:12:08,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175713513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:08,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:08,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:12:08,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640091242] [2024-11-27 20:12:08,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:08,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:12:08,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:08,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:12:08,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:12:09,028 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:12:09,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 140 transitions, 1339 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:09,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:12:09,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:12:09,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:12:11,879 INFO L124 PetriNetUnfolderBase]: 4712/10828 cut-off events. [2024-11-27 20:12:11,879 INFO L125 PetriNetUnfolderBase]: For 43150/43524 co-relation queries the response was YES. [2024-11-27 20:12:12,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37533 conditions, 10828 events. 4712/10828 cut-off events. For 43150/43524 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 106384 event pairs, 1024 based on Foata normal form. 378/11038 useless extension candidates. Maximal degree in co-relation 36909. Up to 5900 conditions per place. [2024-11-27 20:12:12,027 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 164 selfloop transitions, 25 changer transitions 6/208 dead transitions. [2024-11-27 20:12:12,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 208 transitions, 2110 flow [2024-11-27 20:12:12,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:12:12,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:12:12,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 552 transitions. [2024-11-27 20:12:12,029 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6731707317073171 [2024-11-27 20:12:12,029 INFO L175 Difference]: Start difference. First operand has 216 places, 140 transitions, 1339 flow. Second operand 10 states and 552 transitions. [2024-11-27 20:12:12,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 208 transitions, 2110 flow [2024-11-27 20:12:12,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 208 transitions, 2052 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-27 20:12:12,281 INFO L231 Difference]: Finished difference. Result has 218 places, 142 transitions, 1392 flow [2024-11-27 20:12:12,281 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1291, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1392, PETRI_PLACES=218, PETRI_TRANSITIONS=142} [2024-11-27 20:12:12,282 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 140 predicate places. [2024-11-27 20:12:12,282 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 142 transitions, 1392 flow [2024-11-27 20:12:12,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:12,283 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:12:12,283 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:12,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-27 20:12:12,283 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:12:12,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:12,284 INFO L85 PathProgramCache]: Analyzing trace with hash 691379096, now seen corresponding path program 14 times [2024-11-27 20:12:12,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:12,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7543905] [2024-11-27 20:12:12,285 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:12:12,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:12,300 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:12:12,301 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:12:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:12:12,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:12,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7543905] [2024-11-27 20:12:12,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7543905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:12,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:12,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:12:12,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750742659] [2024-11-27 20:12:12,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:12,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:12:12,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:12,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:12:12,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:12:13,047 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:12:13,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 142 transitions, 1392 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:13,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:12:13,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:12:13,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:12:15,814 INFO L124 PetriNetUnfolderBase]: 4724/10908 cut-off events. [2024-11-27 20:12:15,814 INFO L125 PetriNetUnfolderBase]: For 44118/44476 co-relation queries the response was YES. [2024-11-27 20:12:15,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37726 conditions, 10908 events. 4724/10908 cut-off events. For 44118/44476 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 107852 event pairs, 800 based on Foata normal form. 362/11118 useless extension candidates. Maximal degree in co-relation 37101. Up to 5900 conditions per place. [2024-11-27 20:12:16,001 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 163 selfloop transitions, 23 changer transitions 9/208 dead transitions. [2024-11-27 20:12:16,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 208 transitions, 2105 flow [2024-11-27 20:12:16,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:12:16,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:12:16,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 552 transitions. [2024-11-27 20:12:16,003 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6731707317073171 [2024-11-27 20:12:16,003 INFO L175 Difference]: Start difference. First operand has 218 places, 142 transitions, 1392 flow. Second operand 10 states and 552 transitions. [2024-11-27 20:12:16,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 208 transitions, 2105 flow [2024-11-27 20:12:16,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 208 transitions, 2041 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-27 20:12:16,645 INFO L231 Difference]: Finished difference. Result has 220 places, 140 transitions, 1349 flow [2024-11-27 20:12:16,645 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1349, PETRI_PLACES=220, PETRI_TRANSITIONS=140} [2024-11-27 20:12:16,645 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 142 predicate places. [2024-11-27 20:12:16,646 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 140 transitions, 1349 flow [2024-11-27 20:12:16,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:16,646 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:12:16,646 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:16,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-27 20:12:16,647 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:12:16,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:16,647 INFO L85 PathProgramCache]: Analyzing trace with hash -536853314, now seen corresponding path program 15 times [2024-11-27 20:12:16,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:16,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507351099] [2024-11-27 20:12:16,648 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:12:16,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:16,662 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:12:16,663 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:12:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:12:17,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:17,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507351099] [2024-11-27 20:12:17,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507351099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:17,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:17,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:12:17,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689419644] [2024-11-27 20:12:17,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:17,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:12:17,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:17,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:12:17,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:12:17,819 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:12:17,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 140 transitions, 1349 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:17,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:12:17,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:12:17,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:12:20,676 INFO L124 PetriNetUnfolderBase]: 4708/10848 cut-off events. [2024-11-27 20:12:20,677 INFO L125 PetriNetUnfolderBase]: For 43498/43848 co-relation queries the response was YES. [2024-11-27 20:12:20,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37463 conditions, 10848 events. 4708/10848 cut-off events. For 43498/43848 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 107051 event pairs, 804 based on Foata normal form. 354/11042 useless extension candidates. Maximal degree in co-relation 36853. Up to 5900 conditions per place. [2024-11-27 20:12:20,873 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 166 selfloop transitions, 21 changer transitions 9/209 dead transitions. [2024-11-27 20:12:20,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 209 transitions, 2088 flow [2024-11-27 20:12:20,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:12:20,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:12:20,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 553 transitions. [2024-11-27 20:12:20,876 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6743902439024391 [2024-11-27 20:12:20,876 INFO L175 Difference]: Start difference. First operand has 220 places, 140 transitions, 1349 flow. Second operand 10 states and 553 transitions. [2024-11-27 20:12:20,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 209 transitions, 2088 flow [2024-11-27 20:12:21,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 209 transitions, 2030 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-11-27 20:12:21,520 INFO L231 Difference]: Finished difference. Result has 217 places, 138 transitions, 1301 flow [2024-11-27 20:12:21,520 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1297, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1301, PETRI_PLACES=217, PETRI_TRANSITIONS=138} [2024-11-27 20:12:21,521 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 139 predicate places. [2024-11-27 20:12:21,521 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 138 transitions, 1301 flow [2024-11-27 20:12:21,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:21,521 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:12:21,521 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:21,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-27 20:12:21,522 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:12:21,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:21,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1112194224, now seen corresponding path program 16 times [2024-11-27 20:12:21,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:21,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689071663] [2024-11-27 20:12:21,523 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:12:21,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:21,542 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:12:21,542 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:12:22,074 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:12:22,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:22,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689071663] [2024-11-27 20:12:22,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689071663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:22,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:22,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:12:22,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395016638] [2024-11-27 20:12:22,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:22,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:12:22,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:22,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:12:22,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:12:22,632 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:12:22,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 138 transitions, 1301 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:22,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:12:22,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:12:22,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:12:25,081 INFO L124 PetriNetUnfolderBase]: 4668/10732 cut-off events. [2024-11-27 20:12:25,081 INFO L125 PetriNetUnfolderBase]: For 43446/43808 co-relation queries the response was YES. [2024-11-27 20:12:25,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36921 conditions, 10732 events. 4668/10732 cut-off events. For 43446/43808 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 105278 event pairs, 1034 based on Foata normal form. 366/10914 useless extension candidates. Maximal degree in co-relation 36313. Up to 5900 conditions per place. [2024-11-27 20:12:25,261 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 161 selfloop transitions, 22 changer transitions 6/202 dead transitions. [2024-11-27 20:12:25,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 202 transitions, 2028 flow [2024-11-27 20:12:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:12:25,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:12:25,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 552 transitions. [2024-11-27 20:12:25,263 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6731707317073171 [2024-11-27 20:12:25,264 INFO L175 Difference]: Start difference. First operand has 217 places, 138 transitions, 1301 flow. Second operand 10 states and 552 transitions. [2024-11-27 20:12:25,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 202 transitions, 2028 flow [2024-11-27 20:12:25,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 202 transitions, 1974 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-11-27 20:12:25,880 INFO L231 Difference]: Finished difference. Result has 217 places, 140 transitions, 1343 flow [2024-11-27 20:12:25,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1343, PETRI_PLACES=217, PETRI_TRANSITIONS=140} [2024-11-27 20:12:25,881 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 139 predicate places. [2024-11-27 20:12:25,881 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 140 transitions, 1343 flow [2024-11-27 20:12:25,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:25,882 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:12:25,882 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:25,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-27 20:12:25,882 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:12:25,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:25,883 INFO L85 PathProgramCache]: Analyzing trace with hash 142904116, now seen corresponding path program 17 times [2024-11-27 20:12:25,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:25,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368605825] [2024-11-27 20:12:25,883 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:12:25,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:25,946 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-27 20:12:25,946 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:12:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:12:26,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:26,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368605825] [2024-11-27 20:12:26,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368605825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:26,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:26,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:12:26,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443329410] [2024-11-27 20:12:26,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:26,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:12:26,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:26,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:12:26,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:12:27,627 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:12:27,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 140 transitions, 1343 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:27,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:12:27,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:12:27,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:12:30,440 INFO L124 PetriNetUnfolderBase]: 4652/10652 cut-off events. [2024-11-27 20:12:30,440 INFO L125 PetriNetUnfolderBase]: For 44466/44836 co-relation queries the response was YES. [2024-11-27 20:12:30,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36744 conditions, 10652 events. 4652/10652 cut-off events. For 44466/44836 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 104035 event pairs, 1142 based on Foata normal form. 374/10834 useless extension candidates. Maximal degree in co-relation 36151. Up to 5900 conditions per place. [2024-11-27 20:12:30,546 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 160 selfloop transitions, 20 changer transitions 9/202 dead transitions. [2024-11-27 20:12:30,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 202 transitions, 2024 flow [2024-11-27 20:12:30,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:12:30,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:12:30,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 552 transitions. [2024-11-27 20:12:30,548 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6731707317073171 [2024-11-27 20:12:30,548 INFO L175 Difference]: Start difference. First operand has 217 places, 140 transitions, 1343 flow. Second operand 10 states and 552 transitions. [2024-11-27 20:12:30,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 202 transitions, 2024 flow [2024-11-27 20:12:30,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 202 transitions, 1966 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-27 20:12:30,926 INFO L231 Difference]: Finished difference. Result has 219 places, 138 transitions, 1303 flow [2024-11-27 20:12:30,926 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1303, PETRI_PLACES=219, PETRI_TRANSITIONS=138} [2024-11-27 20:12:30,927 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 141 predicate places. [2024-11-27 20:12:30,927 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 138 transitions, 1303 flow [2024-11-27 20:12:30,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:30,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:12:30,927 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:30,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-27 20:12:30,928 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:12:30,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:30,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2100063962, now seen corresponding path program 18 times [2024-11-27 20:12:30,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:30,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826111895] [2024-11-27 20:12:30,929 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:12:30,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:30,949 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-27 20:12:30,949 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:12:31,465 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:12:31,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:31,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826111895] [2024-11-27 20:12:31,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826111895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:31,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:31,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:12:31,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422237932] [2024-11-27 20:12:31,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:31,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:12:31,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:31,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:12:31,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:12:32,111 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:12:32,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 138 transitions, 1303 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:32,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:12:32,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:12:32,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:12:35,209 INFO L124 PetriNetUnfolderBase]: 4657/10689 cut-off events. [2024-11-27 20:12:35,210 INFO L125 PetriNetUnfolderBase]: For 44489/44857 co-relation queries the response was YES. [2024-11-27 20:12:35,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36723 conditions, 10689 events. 4657/10689 cut-off events. For 44489/44857 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 104774 event pairs, 1194 based on Foata normal form. 372/10865 useless extension candidates. Maximal degree in co-relation 36129. Up to 6764 conditions per place. [2024-11-27 20:12:35,339 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 165 selfloop transitions, 24 changer transitions 7/209 dead transitions. [2024-11-27 20:12:35,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 209 transitions, 2165 flow [2024-11-27 20:12:35,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:12:35,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:12:35,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 551 transitions. [2024-11-27 20:12:35,341 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6719512195121952 [2024-11-27 20:12:35,341 INFO L175 Difference]: Start difference. First operand has 219 places, 138 transitions, 1303 flow. Second operand 10 states and 551 transitions. [2024-11-27 20:12:35,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 209 transitions, 2165 flow [2024-11-27 20:12:35,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 209 transitions, 2105 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-11-27 20:12:35,741 INFO L231 Difference]: Finished difference. Result has 219 places, 140 transitions, 1342 flow [2024-11-27 20:12:35,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1342, PETRI_PLACES=219, PETRI_TRANSITIONS=140} [2024-11-27 20:12:35,742 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 141 predicate places. [2024-11-27 20:12:35,742 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 140 transitions, 1342 flow [2024-11-27 20:12:35,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:35,742 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:12:35,742 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:35,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-27 20:12:35,742 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:12:35,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:35,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1437507426, now seen corresponding path program 19 times [2024-11-27 20:12:35,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:35,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234361110] [2024-11-27 20:12:35,744 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:12:35,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:12:36,406 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:12:36,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:36,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234361110] [2024-11-27 20:12:36,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234361110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:36,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:36,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:12:36,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772496327] [2024-11-27 20:12:36,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:36,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:12:36,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:36,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:12:36,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:12:37,060 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:12:37,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 140 transitions, 1342 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:37,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:12:37,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:12:37,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:12:40,365 INFO L124 PetriNetUnfolderBase]: 4669/10817 cut-off events. [2024-11-27 20:12:40,365 INFO L125 PetriNetUnfolderBase]: For 45570/45902 co-relation queries the response was YES. [2024-11-27 20:12:40,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37356 conditions, 10817 events. 4669/10817 cut-off events. For 45570/45902 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 107126 event pairs, 918 based on Foata normal form. 336/10981 useless extension candidates. Maximal degree in co-relation 36761. Up to 6944 conditions per place. [2024-11-27 20:12:40,494 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 155 selfloop transitions, 26 changer transitions 6/200 dead transitions. [2024-11-27 20:12:40,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 200 transitions, 2099 flow [2024-11-27 20:12:40,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:12:40,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:12:40,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 544 transitions. [2024-11-27 20:12:40,496 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6634146341463415 [2024-11-27 20:12:40,496 INFO L175 Difference]: Start difference. First operand has 219 places, 140 transitions, 1342 flow. Second operand 10 states and 544 transitions. [2024-11-27 20:12:40,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 200 transitions, 2099 flow [2024-11-27 20:12:40,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 200 transitions, 2038 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-11-27 20:12:40,765 INFO L231 Difference]: Finished difference. Result has 222 places, 142 transitions, 1384 flow [2024-11-27 20:12:40,765 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1285, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1384, PETRI_PLACES=222, PETRI_TRANSITIONS=142} [2024-11-27 20:12:40,765 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 144 predicate places. [2024-11-27 20:12:40,765 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 142 transitions, 1384 flow [2024-11-27 20:12:40,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:40,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:12:40,766 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:40,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-27 20:12:40,766 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:12:40,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:40,766 INFO L85 PathProgramCache]: Analyzing trace with hash 279641130, now seen corresponding path program 20 times [2024-11-27 20:12:40,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:40,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960441064] [2024-11-27 20:12:40,767 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:12:40,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:40,779 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:12:40,779 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:12:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:12:41,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:41,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960441064] [2024-11-27 20:12:41,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960441064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:41,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:41,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:12:41,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632728776] [2024-11-27 20:12:41,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:41,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:12:41,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:41,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:12:41,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:12:41,906 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:12:41,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 142 transitions, 1384 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:41,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:12:41,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:12:41,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:12:45,053 INFO L124 PetriNetUnfolderBase]: 4637/10657 cut-off events. [2024-11-27 20:12:45,053 INFO L125 PetriNetUnfolderBase]: For 47013/47369 co-relation queries the response was YES. [2024-11-27 20:12:45,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37145 conditions, 10657 events. 4637/10657 cut-off events. For 47013/47369 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 104347 event pairs, 1202 based on Foata normal form. 360/10821 useless extension candidates. Maximal degree in co-relation 36565. Up to 6900 conditions per place. [2024-11-27 20:12:45,202 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 154 selfloop transitions, 24 changer transitions 9/200 dead transitions. [2024-11-27 20:12:45,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 200 transitions, 2097 flow [2024-11-27 20:12:45,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:12:45,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:12:45,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 544 transitions. [2024-11-27 20:12:45,204 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6634146341463415 [2024-11-27 20:12:45,204 INFO L175 Difference]: Start difference. First operand has 222 places, 142 transitions, 1384 flow. Second operand 10 states and 544 transitions. [2024-11-27 20:12:45,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 200 transitions, 2097 flow [2024-11-27 20:12:45,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 200 transitions, 2029 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-11-27 20:12:45,645 INFO L231 Difference]: Finished difference. Result has 224 places, 140 transitions, 1343 flow [2024-11-27 20:12:45,645 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1343, PETRI_PLACES=224, PETRI_TRANSITIONS=140} [2024-11-27 20:12:45,646 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 146 predicate places. [2024-11-27 20:12:45,646 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 140 transitions, 1343 flow [2024-11-27 20:12:45,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:45,646 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:12:45,646 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:45,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-27 20:12:45,647 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:12:45,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:45,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1102812166, now seen corresponding path program 21 times [2024-11-27 20:12:45,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:45,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041413502] [2024-11-27 20:12:45,647 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:12:45,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:45,661 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:12:45,661 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:12:46,058 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:12:46,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:46,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041413502] [2024-11-27 20:12:46,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041413502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:46,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:46,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:12:46,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868948576] [2024-11-27 20:12:46,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:46,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:12:46,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:46,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:12:46,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:12:46,645 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:12:46,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 140 transitions, 1343 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:46,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:12:46,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:12:46,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:12:49,755 INFO L124 PetriNetUnfolderBase]: 4629/10681 cut-off events. [2024-11-27 20:12:49,755 INFO L125 PetriNetUnfolderBase]: For 45421/45785 co-relation queries the response was YES. [2024-11-27 20:12:49,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37156 conditions, 10681 events. 4629/10681 cut-off events. For 45421/45785 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 104693 event pairs, 1247 based on Foata normal form. 368/10844 useless extension candidates. Maximal degree in co-relation 36559. Up to 3548 conditions per place. [2024-11-27 20:12:49,896 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 178 selfloop transitions, 22 changer transitions 6/219 dead transitions. [2024-11-27 20:12:49,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 219 transitions, 2234 flow [2024-11-27 20:12:49,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:12:49,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:12:49,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 562 transitions. [2024-11-27 20:12:49,898 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6853658536585366 [2024-11-27 20:12:49,898 INFO L175 Difference]: Start difference. First operand has 224 places, 140 transitions, 1343 flow. Second operand 10 states and 562 transitions. [2024-11-27 20:12:49,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 219 transitions, 2234 flow [2024-11-27 20:12:50,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 219 transitions, 2140 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-11-27 20:12:50,177 INFO L231 Difference]: Finished difference. Result has 227 places, 144 transitions, 1425 flow [2024-11-27 20:12:50,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1425, PETRI_PLACES=227, PETRI_TRANSITIONS=144} [2024-11-27 20:12:50,178 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 149 predicate places. [2024-11-27 20:12:50,178 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 144 transitions, 1425 flow [2024-11-27 20:12:50,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:50,179 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:12:50,179 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:50,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-11-27 20:12:50,179 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:12:50,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:50,179 INFO L85 PathProgramCache]: Analyzing trace with hash 789604560, now seen corresponding path program 22 times [2024-11-27 20:12:50,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:50,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852126302] [2024-11-27 20:12:50,180 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:12:50,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:50,194 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:12:50,195 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:12:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:12:50,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:50,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852126302] [2024-11-27 20:12:50,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852126302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:50,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:50,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:12:50,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508097930] [2024-11-27 20:12:50,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:50,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:12:50,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:50,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:12:50,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:12:51,374 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:12:51,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 144 transitions, 1425 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:51,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:12:51,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:12:51,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:12:54,028 INFO L124 PetriNetUnfolderBase]: 4689/10789 cut-off events. [2024-11-27 20:12:54,028 INFO L125 PetriNetUnfolderBase]: For 53991/54367 co-relation queries the response was YES. [2024-11-27 20:12:54,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38184 conditions, 10789 events. 4689/10789 cut-off events. For 53991/54367 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 105638 event pairs, 1336 based on Foata normal form. 380/10940 useless extension candidates. Maximal degree in co-relation 37567. Up to 3548 conditions per place. [2024-11-27 20:12:54,103 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 187 selfloop transitions, 16 changer transitions 7/223 dead transitions. [2024-11-27 20:12:54,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 223 transitions, 2269 flow [2024-11-27 20:12:54,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:12:54,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:12:54,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 569 transitions. [2024-11-27 20:12:54,104 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6939024390243902 [2024-11-27 20:12:54,104 INFO L175 Difference]: Start difference. First operand has 227 places, 144 transitions, 1425 flow. Second operand 10 states and 569 transitions. [2024-11-27 20:12:54,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 223 transitions, 2269 flow [2024-11-27 20:12:54,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 223 transitions, 2193 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-11-27 20:12:54,389 INFO L231 Difference]: Finished difference. Result has 236 places, 147 transitions, 1489 flow [2024-11-27 20:12:54,389 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1489, PETRI_PLACES=236, PETRI_TRANSITIONS=147} [2024-11-27 20:12:54,389 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 158 predicate places. [2024-11-27 20:12:54,389 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 147 transitions, 1489 flow [2024-11-27 20:12:54,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:54,389 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:12:54,389 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:54,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-11-27 20:12:54,390 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:12:54,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:54,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1812347688, now seen corresponding path program 23 times [2024-11-27 20:12:54,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:54,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251988253] [2024-11-27 20:12:54,390 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:12:54,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:54,423 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-27 20:12:54,423 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:12:55,046 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:12:55,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:55,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251988253] [2024-11-27 20:12:55,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251988253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:55,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:55,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:12:55,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439642690] [2024-11-27 20:12:55,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:55,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:12:55,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:55,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:12:55,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:12:55,338 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:12:55,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 147 transitions, 1489 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:55,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:12:55,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:12:55,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:12:57,959 INFO L124 PetriNetUnfolderBase]: 4757/11065 cut-off events. [2024-11-27 20:12:57,959 INFO L125 PetriNetUnfolderBase]: For 58645/59027 co-relation queries the response was YES. [2024-11-27 20:12:58,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39814 conditions, 11065 events. 4757/11065 cut-off events. For 58645/59027 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 109790 event pairs, 1244 based on Foata normal form. 386/11231 useless extension candidates. Maximal degree in co-relation 39161. Up to 3548 conditions per place. [2024-11-27 20:12:58,098 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 185 selfloop transitions, 22 changer transitions 6/226 dead transitions. [2024-11-27 20:12:58,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 226 transitions, 2349 flow [2024-11-27 20:12:58,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:12:58,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:12:58,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 565 transitions. [2024-11-27 20:12:58,100 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6890243902439024 [2024-11-27 20:12:58,100 INFO L175 Difference]: Start difference. First operand has 236 places, 147 transitions, 1489 flow. Second operand 10 states and 565 transitions. [2024-11-27 20:12:58,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 226 transitions, 2349 flow [2024-11-27 20:12:58,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 226 transitions, 2258 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-11-27 20:12:58,503 INFO L231 Difference]: Finished difference. Result has 244 places, 150 transitions, 1562 flow [2024-11-27 20:12:58,504 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1562, PETRI_PLACES=244, PETRI_TRANSITIONS=150} [2024-11-27 20:12:58,504 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 166 predicate places. [2024-11-27 20:12:58,504 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 150 transitions, 1562 flow [2024-11-27 20:12:58,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:58,505 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:12:58,505 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:58,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-11-27 20:12:58,505 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:12:58,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:58,506 INFO L85 PathProgramCache]: Analyzing trace with hash -268352956, now seen corresponding path program 24 times [2024-11-27 20:12:58,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:58,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657315690] [2024-11-27 20:12:58,506 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:12:58,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:58,525 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-27 20:12:58,525 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:12:59,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:12:59,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:59,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657315690] [2024-11-27 20:12:59,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657315690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:59,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:59,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:12:59,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892134522] [2024-11-27 20:12:59,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:59,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:12:59,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:59,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:12:59,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:12:59,760 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:12:59,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 150 transitions, 1562 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:59,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:12:59,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:12:59,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:03,273 INFO L124 PetriNetUnfolderBase]: 4750/11002 cut-off events. [2024-11-27 20:13:03,273 INFO L125 PetriNetUnfolderBase]: For 57151/57527 co-relation queries the response was YES. [2024-11-27 20:13:03,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39584 conditions, 11002 events. 4750/11002 cut-off events. For 57151/57527 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 108306 event pairs, 1533 based on Foata normal form. 380/11127 useless extension candidates. Maximal degree in co-relation 38927. Up to 3548 conditions per place. [2024-11-27 20:13:03,420 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 179 selfloop transitions, 20 changer transitions 6/218 dead transitions. [2024-11-27 20:13:03,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 218 transitions, 2358 flow [2024-11-27 20:13:03,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:13:03,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:13:03,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 559 transitions. [2024-11-27 20:13:03,422 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6817073170731708 [2024-11-27 20:13:03,422 INFO L175 Difference]: Start difference. First operand has 244 places, 150 transitions, 1562 flow. Second operand 10 states and 559 transitions. [2024-11-27 20:13:03,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 218 transitions, 2358 flow [2024-11-27 20:13:03,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 218 transitions, 2300 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-11-27 20:13:03,789 INFO L231 Difference]: Finished difference. Result has 250 places, 154 transitions, 1639 flow [2024-11-27 20:13:03,789 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1523, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1639, PETRI_PLACES=250, PETRI_TRANSITIONS=154} [2024-11-27 20:13:03,790 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 172 predicate places. [2024-11-27 20:13:03,790 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 154 transitions, 1639 flow [2024-11-27 20:13:03,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:03,791 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:03,791 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:03,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-11-27 20:13:03,791 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:13:03,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:03,791 INFO L85 PathProgramCache]: Analyzing trace with hash 652830276, now seen corresponding path program 25 times [2024-11-27 20:13:03,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:03,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943463367] [2024-11-27 20:13:03,792 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:13:03,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:04,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:13:04,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:04,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943463367] [2024-11-27 20:13:04,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943463367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:04,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:04,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:13:04,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710972252] [2024-11-27 20:13:04,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:04,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:13:04,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:04,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:13:04,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:13:05,126 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:13:05,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 154 transitions, 1639 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:05,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:05,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:13:05,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:08,464 INFO L124 PetriNetUnfolderBase]: 4743/11047 cut-off events. [2024-11-27 20:13:08,464 INFO L125 PetriNetUnfolderBase]: For 56997/57369 co-relation queries the response was YES. [2024-11-27 20:13:08,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40040 conditions, 11047 events. 4743/11047 cut-off events. For 56997/57369 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 109556 event pairs, 1365 based on Foata normal form. 376/11194 useless extension candidates. Maximal degree in co-relation 39381. Up to 4243 conditions per place. [2024-11-27 20:13:09,011 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 167 selfloop transitions, 30 changer transitions 7/217 dead transitions. [2024-11-27 20:13:09,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 217 transitions, 2422 flow [2024-11-27 20:13:09,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:13:09,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:13:09,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 555 transitions. [2024-11-27 20:13:09,013 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.676829268292683 [2024-11-27 20:13:09,013 INFO L175 Difference]: Start difference. First operand has 250 places, 154 transitions, 1639 flow. Second operand 10 states and 555 transitions. [2024-11-27 20:13:09,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 217 transitions, 2422 flow [2024-11-27 20:13:09,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 217 transitions, 2350 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-11-27 20:13:09,364 INFO L231 Difference]: Finished difference. Result has 255 places, 158 transitions, 1733 flow [2024-11-27 20:13:09,364 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1733, PETRI_PLACES=255, PETRI_TRANSITIONS=158} [2024-11-27 20:13:09,365 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 177 predicate places. [2024-11-27 20:13:09,365 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 158 transitions, 1733 flow [2024-11-27 20:13:09,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:09,365 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:09,365 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:09,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-11-27 20:13:09,365 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:13:09,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:09,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1625539974, now seen corresponding path program 26 times [2024-11-27 20:13:09,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:09,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713747908] [2024-11-27 20:13:09,366 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:13:09,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:09,384 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:13:09,385 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:13:09,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:13:09,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:09,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713747908] [2024-11-27 20:13:09,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713747908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:09,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:09,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:13:09,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62848014] [2024-11-27 20:13:09,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:09,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:13:09,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:09,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:13:09,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:13:10,262 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:13:10,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 158 transitions, 1733 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:10,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:10,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:13:10,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:13,524 INFO L124 PetriNetUnfolderBase]: 4711/10887 cut-off events. [2024-11-27 20:13:13,524 INFO L125 PetriNetUnfolderBase]: For 61547/61941 co-relation queries the response was YES. [2024-11-27 20:13:13,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40317 conditions, 10887 events. 4711/10887 cut-off events. For 61547/61941 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 107093 event pairs, 1428 based on Foata normal form. 398/11021 useless extension candidates. Maximal degree in co-relation 39655. Up to 3548 conditions per place. [2024-11-27 20:13:13,681 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 202 selfloop transitions, 19 changer transitions 6/240 dead transitions. [2024-11-27 20:13:13,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 240 transitions, 2570 flow [2024-11-27 20:13:13,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:13:13,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:13:13,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 572 transitions. [2024-11-27 20:13:13,683 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.697560975609756 [2024-11-27 20:13:13,683 INFO L175 Difference]: Start difference. First operand has 255 places, 158 transitions, 1733 flow. Second operand 10 states and 572 transitions. [2024-11-27 20:13:13,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 240 transitions, 2570 flow [2024-11-27 20:13:14,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 240 transitions, 2480 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-11-27 20:13:14,062 INFO L231 Difference]: Finished difference. Result has 261 places, 160 transitions, 1750 flow [2024-11-27 20:13:14,063 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1750, PETRI_PLACES=261, PETRI_TRANSITIONS=160} [2024-11-27 20:13:14,063 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 183 predicate places. [2024-11-27 20:13:14,063 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 160 transitions, 1750 flow [2024-11-27 20:13:14,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:14,063 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:14,063 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:14,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-11-27 20:13:14,064 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:13:14,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:14,065 INFO L85 PathProgramCache]: Analyzing trace with hash 2019919238, now seen corresponding path program 27 times [2024-11-27 20:13:14,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:14,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275840175] [2024-11-27 20:13:14,065 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:13:14,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:14,078 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:13:14,078 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:13:14,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:13:14,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:14,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275840175] [2024-11-27 20:13:14,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275840175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:14,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:14,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:13:14,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557428866] [2024-11-27 20:13:14,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:14,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:13:14,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:14,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:13:14,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:13:14,766 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:13:14,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 160 transitions, 1750 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:14,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:14,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:13:14,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:18,340 INFO L124 PetriNetUnfolderBase]: 4713/10973 cut-off events. [2024-11-27 20:13:18,340 INFO L125 PetriNetUnfolderBase]: For 61451/61825 co-relation queries the response was YES. [2024-11-27 20:13:18,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40187 conditions, 10973 events. 4713/10973 cut-off events. For 61451/61825 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 108738 event pairs, 1288 based on Foata normal form. 378/11115 useless extension candidates. Maximal degree in co-relation 39521. Up to 3548 conditions per place. [2024-11-27 20:13:18,486 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 189 selfloop transitions, 25 changer transitions 7/234 dead transitions. [2024-11-27 20:13:18,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 234 transitions, 2536 flow [2024-11-27 20:13:18,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:13:18,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:13:18,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 565 transitions. [2024-11-27 20:13:18,488 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6890243902439024 [2024-11-27 20:13:18,488 INFO L175 Difference]: Start difference. First operand has 261 places, 160 transitions, 1750 flow. Second operand 10 states and 565 transitions. [2024-11-27 20:13:18,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 234 transitions, 2536 flow [2024-11-27 20:13:18,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 234 transitions, 2483 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-11-27 20:13:18,869 INFO L231 Difference]: Finished difference. Result has 267 places, 162 transitions, 1806 flow [2024-11-27 20:13:18,869 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1806, PETRI_PLACES=267, PETRI_TRANSITIONS=162} [2024-11-27 20:13:18,870 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 189 predicate places. [2024-11-27 20:13:18,870 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 162 transitions, 1806 flow [2024-11-27 20:13:18,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:18,870 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:18,870 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:18,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-11-27 20:13:18,870 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:13:18,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:18,871 INFO L85 PathProgramCache]: Analyzing trace with hash -665568722, now seen corresponding path program 28 times [2024-11-27 20:13:18,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:18,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626329025] [2024-11-27 20:13:18,871 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:13:18,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:18,882 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:13:18,882 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:13:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:13:19,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:19,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626329025] [2024-11-27 20:13:19,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626329025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:19,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:19,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:13:19,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583596388] [2024-11-27 20:13:19,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:19,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:13:19,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:19,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:13:19,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:13:19,740 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:13:19,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 162 transitions, 1806 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:19,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:19,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:13:19,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:22,629 INFO L124 PetriNetUnfolderBase]: 4721/10989 cut-off events. [2024-11-27 20:13:22,629 INFO L125 PetriNetUnfolderBase]: For 61537/61891 co-relation queries the response was YES. [2024-11-27 20:13:22,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40490 conditions, 10989 events. 4721/10989 cut-off events. For 61537/61891 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 108961 event pairs, 1224 based on Foata normal form. 358/11103 useless extension candidates. Maximal degree in co-relation 39821. Up to 3548 conditions per place. [2024-11-27 20:13:23,205 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 195 selfloop transitions, 20 changer transitions 7/235 dead transitions. [2024-11-27 20:13:23,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 235 transitions, 2579 flow [2024-11-27 20:13:23,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:13:23,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:13:23,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 566 transitions. [2024-11-27 20:13:23,207 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6902439024390243 [2024-11-27 20:13:23,207 INFO L175 Difference]: Start difference. First operand has 267 places, 162 transitions, 1806 flow. Second operand 10 states and 566 transitions. [2024-11-27 20:13:23,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 235 transitions, 2579 flow [2024-11-27 20:13:23,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 235 transitions, 2518 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-27 20:13:23,634 INFO L231 Difference]: Finished difference. Result has 272 places, 164 transitions, 1843 flow [2024-11-27 20:13:23,635 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1751, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1843, PETRI_PLACES=272, PETRI_TRANSITIONS=164} [2024-11-27 20:13:23,635 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 194 predicate places. [2024-11-27 20:13:23,635 INFO L471 AbstractCegarLoop]: Abstraction has has 272 places, 164 transitions, 1843 flow [2024-11-27 20:13:23,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:23,635 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:23,635 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:23,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-11-27 20:13:23,636 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:13:23,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:23,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1082239692, now seen corresponding path program 29 times [2024-11-27 20:13:23,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:23,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959070769] [2024-11-27 20:13:23,637 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:13:23,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:23,687 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-27 20:13:23,688 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:13:24,399 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:13:24,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:24,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959070769] [2024-11-27 20:13:24,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959070769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:24,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:24,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:13:24,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887150143] [2024-11-27 20:13:24,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:24,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:13:24,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:24,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:13:24,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:13:24,676 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:13:24,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 164 transitions, 1843 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:24,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:24,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:13:24,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:28,302 INFO L124 PetriNetUnfolderBase]: 4705/10961 cut-off events. [2024-11-27 20:13:28,302 INFO L125 PetriNetUnfolderBase]: For 61925/62279 co-relation queries the response was YES. [2024-11-27 20:13:28,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40434 conditions, 10961 events. 4705/10961 cut-off events. For 61925/62279 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 108649 event pairs, 1230 based on Foata normal form. 358/11071 useless extension candidates. Maximal degree in co-relation 39763. Up to 3548 conditions per place. [2024-11-27 20:13:28,429 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 194 selfloop transitions, 23 changer transitions 7/237 dead transitions. [2024-11-27 20:13:28,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 237 transitions, 2616 flow [2024-11-27 20:13:28,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:13:28,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:13:28,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 567 transitions. [2024-11-27 20:13:28,431 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6914634146341463 [2024-11-27 20:13:28,431 INFO L175 Difference]: Start difference. First operand has 272 places, 164 transitions, 1843 flow. Second operand 10 states and 567 transitions. [2024-11-27 20:13:28,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 237 transitions, 2616 flow [2024-11-27 20:13:28,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 237 transitions, 2554 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-11-27 20:13:28,771 INFO L231 Difference]: Finished difference. Result has 274 places, 166 transitions, 1892 flow [2024-11-27 20:13:28,771 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1795, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1892, PETRI_PLACES=274, PETRI_TRANSITIONS=166} [2024-11-27 20:13:28,772 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 196 predicate places. [2024-11-27 20:13:28,772 INFO L471 AbstractCegarLoop]: Abstraction has has 274 places, 166 transitions, 1892 flow [2024-11-27 20:13:28,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:28,772 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:28,772 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:28,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-11-27 20:13:28,772 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-27 20:13:28,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:28,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1019160862, now seen corresponding path program 30 times [2024-11-27 20:13:28,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:28,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041332976] [2024-11-27 20:13:28,773 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:13:28,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:28,783 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-27 20:13:28,784 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:13:29,138 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:13:29,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:29,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041332976] [2024-11-27 20:13:29,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041332976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:29,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:29,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:13:29,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229472581] [2024-11-27 20:13:29,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:29,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:13:29,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:29,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:13:29,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:13:29,479 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-27 20:13:29,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 166 transitions, 1892 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:29,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:29,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-27 20:13:29,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand