./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/mult-comm.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_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/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_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/mult-comm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/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_252a56e2-c374-4997-a89d-a861d2705a4b/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 de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:55:29,519 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:55:29,638 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 02:55:29,648 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:55:29,648 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:55:29,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:55:29,682 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:55:29,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:55:29,683 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:55:29,683 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:55:29,683 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:55:29,683 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:55:29,684 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:55:29,684 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:55:29,684 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:55:29,684 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:55:29,685 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:55:29,685 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:55:29,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:55:29,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:55:29,685 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:55:29,685 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:55:29,686 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:55:29,686 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:55:29,686 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:55:29,686 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:55:29,686 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:55:29,687 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:55:29,687 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:55:29,687 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:55:29,687 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:55:29,687 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:55:29,688 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:55:29,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:55:29,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:55:29,688 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:55:29,688 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:55:29,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:55:29,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:55:29,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:55:29,689 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:55:29,689 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:55:29,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:55:29,690 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:55:29,690 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:55:29,690 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:55:29,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:55:29,690 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_252a56e2-c374-4997-a89d-a861d2705a4b/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 -> de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 [2024-11-28 02:55:30,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:55:30,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:55:30,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:55:30,086 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:55:30,086 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:55:30,088 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/mult-comm.wvr.c [2024-11-28 02:55:33,403 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/data/863999d2b/9a02237934c3425198fb18dc5a7f6fbf/FLAG5564200cd [2024-11-28 02:55:33,689 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:55:33,690 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/sv-benchmarks/c/weaver/mult-comm.wvr.c [2024-11-28 02:55:33,701 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/data/863999d2b/9a02237934c3425198fb18dc5a7f6fbf/FLAG5564200cd [2024-11-28 02:55:33,740 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/data/863999d2b/9a02237934c3425198fb18dc5a7f6fbf [2024-11-28 02:55:33,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:55:33,745 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:55:33,751 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:55:33,751 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:55:33,755 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:55:33,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:55:33" (1/1) ... [2024-11-28 02:55:33,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@223c13c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:33, skipping insertion in model container [2024-11-28 02:55:33,761 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:55:33" (1/1) ... [2024-11-28 02:55:33,783 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:55:34,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:55:34,047 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:55:34,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:55:34,091 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:55:34,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:34 WrapperNode [2024-11-28 02:55:34,092 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:55:34,093 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:55:34,093 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:55:34,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:55:34,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:34" (1/1) ... [2024-11-28 02:55:34,104 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:34" (1/1) ... [2024-11-28 02:55:34,120 INFO L138 Inliner]: procedures = 20, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2024-11-28 02:55:34,120 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:55:34,121 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:55:34,121 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:55:34,121 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:55:34,130 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:34" (1/1) ... [2024-11-28 02:55:34,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:34" (1/1) ... [2024-11-28 02:55:34,132 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:34" (1/1) ... [2024-11-28 02:55:34,145 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:55:34,145 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:34" (1/1) ... [2024-11-28 02:55:34,145 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:34" (1/1) ... [2024-11-28 02:55:34,149 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:34" (1/1) ... [2024-11-28 02:55:34,150 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:34" (1/1) ... [2024-11-28 02:55:34,158 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:34" (1/1) ... [2024-11-28 02:55:34,159 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:34" (1/1) ... [2024-11-28 02:55:34,160 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:34" (1/1) ... [2024-11-28 02:55:34,162 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:55:34,163 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:55:34,163 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:55:34,163 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:55:34,164 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:34" (1/1) ... [2024-11-28 02:55:34,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:55:34,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:34,220 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:55:34,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:55:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:55:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 02:55:34,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 02:55:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 02:55:34,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 02:55:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:55:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:55:34,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:55:34,262 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:55:34,373 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:55:34,375 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:55:34,557 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:55:34,557 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:55:34,716 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:55:34,716 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:55:34,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:55:34 BoogieIcfgContainer [2024-11-28 02:55:34,716 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:55:34,722 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:55:34,722 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:55:34,729 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:55:34,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:55:33" (1/3) ... [2024-11-28 02:55:34,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746e7ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:55:34, skipping insertion in model container [2024-11-28 02:55:34,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:34" (2/3) ... [2024-11-28 02:55:34,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746e7ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:55:34, skipping insertion in model container [2024-11-28 02:55:34,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:55:34" (3/3) ... [2024-11-28 02:55:34,733 INFO L128 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2024-11-28 02:55:34,753 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:55:34,755 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mult-comm.wvr.c that has 3 procedures, 19 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-28 02:55:34,755 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:55:34,838 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 02:55:34,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 54 flow [2024-11-28 02:55:34,928 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-28 02:55:34,934 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:55:34,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 2/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-11-28 02:55:34,942 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 20 transitions, 54 flow [2024-11-28 02:55:34,947 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2024-11-28 02:55:34,964 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:55:34,990 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;@1bf6876e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:55:34,990 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-28 02:55:35,005 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:55:35,006 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-11-28 02:55:35,006 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:55:35,006 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:35,011 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:35,011 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:55:35,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:35,024 INFO L85 PathProgramCache]: Analyzing trace with hash -875085204, now seen corresponding path program 1 times [2024-11-28 02:55:35,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:35,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655524278] [2024-11-28 02:55:35,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:35,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:35,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:35,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655524278] [2024-11-28 02:55:35,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655524278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:35,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:55:35,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:55:35,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10216477] [2024-11-28 02:55:35,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:35,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:55:35,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:35,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:55:35,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:55:35,843 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:55:35,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:35,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:35,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:55:35,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:35,993 INFO L124 PetriNetUnfolderBase]: 68/123 cut-off events. [2024-11-28 02:55:35,993 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-28 02:55:35,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 123 events. 68/123 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 324 event pairs, 22 based on Foata normal form. 2/95 useless extension candidates. Maximal degree in co-relation 220. Up to 72 conditions per place. [2024-11-28 02:55:36,000 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 21 selfloop transitions, 3 changer transitions 1/26 dead transitions. [2024-11-28 02:55:36,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 26 transitions, 123 flow [2024-11-28 02:55:36,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:55:36,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:55:36,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2024-11-28 02:55:36,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-28 02:55:36,022 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 3 states and 39 transitions. [2024-11-28 02:55:36,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 26 transitions, 123 flow [2024-11-28 02:55:36,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 26 transitions, 109 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:55:36,032 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2024-11-28 02:55:36,035 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2024-11-28 02:55:36,042 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2024-11-28 02:55:36,042 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2024-11-28 02:55:36,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:36,042 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:36,042 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:36,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:55:36,043 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:55:36,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:36,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1409688334, now seen corresponding path program 1 times [2024-11-28 02:55:36,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:36,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686989507] [2024-11-28 02:55:36,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:36,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:36,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:36,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:36,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686989507] [2024-11-28 02:55:36,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686989507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:36,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948191891] [2024-11-28 02:55:36,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:36,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:36,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:36,653 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:36,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:55:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:36,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:55:36,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:36,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:36,957 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:55:37,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:37,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948191891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:55:37,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:55:37,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2024-11-28 02:55:37,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211467787] [2024-11-28 02:55:37,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:55:37,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:55:37,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:37,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:55:37,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:55:37,351 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:55:37,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:37,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:37,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:55:37,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:37,602 INFO L124 PetriNetUnfolderBase]: 70/131 cut-off events. [2024-11-28 02:55:37,602 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-28 02:55:37,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 131 events. 70/131 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 346 event pairs, 6 based on Foata normal form. 1/132 useless extension candidates. Maximal degree in co-relation 104. Up to 70 conditions per place. [2024-11-28 02:55:37,605 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 23 selfloop transitions, 5 changer transitions 12/41 dead transitions. [2024-11-28 02:55:37,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 41 transitions, 196 flow [2024-11-28 02:55:37,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:55:37,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:55:37,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-11-28 02:55:37,607 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-28 02:55:37,607 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 6 states and 65 transitions. [2024-11-28 02:55:37,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 41 transitions, 196 flow [2024-11-28 02:55:37,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 41 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:55:37,610 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 78 flow [2024-11-28 02:55:37,610 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=78, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2024-11-28 02:55:37,611 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 4 predicate places. [2024-11-28 02:55:37,611 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 78 flow [2024-11-28 02:55:37,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:37,612 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:37,612 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:37,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:55:37,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-28 02:55:37,813 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:55:37,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:37,814 INFO L85 PathProgramCache]: Analyzing trace with hash 666472083, now seen corresponding path program 1 times [2024-11-28 02:55:37,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:37,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274106986] [2024-11-28 02:55:37,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:37,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:38,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:38,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:38,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274106986] [2024-11-28 02:55:38,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274106986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:38,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055114470] [2024-11-28 02:55:38,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:38,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:38,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:38,151 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:38,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:55:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:38,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:55:38,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:38,415 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:55:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:38,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055114470] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:55:38,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:55:38,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-11-28 02:55:38,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904450199] [2024-11-28 02:55:38,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:55:38,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:55:38,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:38,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:55:38,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:55:38,788 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:55:38,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 78 flow. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:38,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:38,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:55:38,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:39,126 INFO L124 PetriNetUnfolderBase]: 62/116 cut-off events. [2024-11-28 02:55:39,126 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-11-28 02:55:39,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 116 events. 62/116 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 301 event pairs, 7 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 322. Up to 67 conditions per place. [2024-11-28 02:55:39,128 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 21 selfloop transitions, 6 changer transitions 12/40 dead transitions. [2024-11-28 02:55:39,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 40 transitions, 226 flow [2024-11-28 02:55:39,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:55:39,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:55:39,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2024-11-28 02:55:39,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-28 02:55:39,131 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 78 flow. Second operand 6 states and 63 transitions. [2024-11-28 02:55:39,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 40 transitions, 226 flow [2024-11-28 02:55:39,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 40 transitions, 204 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-28 02:55:39,134 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 94 flow [2024-11-28 02:55:39,135 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2024-11-28 02:55:39,135 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2024-11-28 02:55:39,136 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 94 flow [2024-11-28 02:55:39,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:39,136 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:39,136 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:39,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:55:39,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:39,341 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:55:39,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:39,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1439533156, now seen corresponding path program 2 times [2024-11-28 02:55:39,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:39,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308441150] [2024-11-28 02:55:39,342 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:55:39,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:39,371 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:55:39,376 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:39,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:39,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308441150] [2024-11-28 02:55:39,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308441150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:39,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122975252] [2024-11-28 02:55:39,905 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:55:39,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:39,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:39,907 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:39,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:55:39,980 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:55:39,980 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:39,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:55:39,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:40,137 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:55:40,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:40,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122975252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:55:40,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:55:40,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-28 02:55:40,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920245982] [2024-11-28 02:55:40,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:55:40,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:55:40,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:40,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:55:40,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:55:40,305 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:55:40,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 94 flow. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:40,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:40,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:55:40,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:40,625 INFO L124 PetriNetUnfolderBase]: 103/192 cut-off events. [2024-11-28 02:55:40,627 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-11-28 02:55:40,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 192 events. 103/192 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 587 event pairs, 13 based on Foata normal form. 3/195 useless extension candidates. Maximal degree in co-relation 551. Up to 84 conditions per place. [2024-11-28 02:55:40,630 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 34 selfloop transitions, 18 changer transitions 9/62 dead transitions. [2024-11-28 02:55:40,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 62 transitions, 350 flow [2024-11-28 02:55:40,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:55:40,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:55:40,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-11-28 02:55:40,636 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-11-28 02:55:40,636 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 94 flow. Second operand 10 states and 102 transitions. [2024-11-28 02:55:40,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 62 transitions, 350 flow [2024-11-28 02:55:40,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 62 transitions, 337 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-28 02:55:40,642 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 196 flow [2024-11-28 02:55:40,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-11-28 02:55:40,643 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 17 predicate places. [2024-11-28 02:55:40,644 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 196 flow [2024-11-28 02:55:40,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:40,644 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:40,644 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:40,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:55:40,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:40,845 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:55:40,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:40,846 INFO L85 PathProgramCache]: Analyzing trace with hash -633336048, now seen corresponding path program 3 times [2024-11-28 02:55:40,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:40,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259924957] [2024-11-28 02:55:40,847 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:55:40,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:40,874 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:55:40,878 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:41,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:41,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:41,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259924957] [2024-11-28 02:55:41,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259924957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:41,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079635156] [2024-11-28 02:55:41,247 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:55:41,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:41,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:41,250 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:41,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:55:41,330 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:55:41,330 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:41,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:55:41,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:41,469 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:55:41,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:41,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079635156] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:55:41,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:55:41,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-11-28 02:55:41,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437988731] [2024-11-28 02:55:41,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:55:41,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:55:41,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:41,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:55:41,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:55:41,703 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:55:41,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 196 flow. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:41,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:41,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:55:41,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:41,977 INFO L124 PetriNetUnfolderBase]: 117/215 cut-off events. [2024-11-28 02:55:41,978 INFO L125 PetriNetUnfolderBase]: For 285/285 co-relation queries the response was YES. [2024-11-28 02:55:41,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774 conditions, 215 events. 117/215 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 699 event pairs, 18 based on Foata normal form. 2/215 useless extension candidates. Maximal degree in co-relation 721. Up to 159 conditions per place. [2024-11-28 02:55:41,984 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 38 selfloop transitions, 14 changer transitions 6/59 dead transitions. [2024-11-28 02:55:41,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 415 flow [2024-11-28 02:55:41,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:55:41,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:55:41,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-11-28 02:55:41,988 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-28 02:55:41,988 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 196 flow. Second operand 8 states and 80 transitions. [2024-11-28 02:55:41,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 415 flow [2024-11-28 02:55:41,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 357 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-11-28 02:55:41,997 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 232 flow [2024-11-28 02:55:41,998 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=232, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-11-28 02:55:41,999 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 23 predicate places. [2024-11-28 02:55:42,001 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 232 flow [2024-11-28 02:55:42,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:42,002 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:42,002 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:42,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:55:42,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:42,206 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:55:42,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:42,207 INFO L85 PathProgramCache]: Analyzing trace with hash 2029174995, now seen corresponding path program 2 times [2024-11-28 02:55:42,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:42,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477358367] [2024-11-28 02:55:42,207 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:55:42,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:42,223 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:55:42,223 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:42,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:42,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477358367] [2024-11-28 02:55:42,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477358367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:42,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310270063] [2024-11-28 02:55:42,444 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:55:42,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:42,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:42,446 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:42,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:55:42,512 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:55:42,512 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:42,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:55:42,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:42,698 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:55:43,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:43,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310270063] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:55:43,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:55:43,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 6] total 13 [2024-11-28 02:55:43,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64184257] [2024-11-28 02:55:43,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:55:43,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:55:43,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:43,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:55:43,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:55:43,095 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:55:43,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 232 flow. Second operand has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:43,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:43,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:55:43,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:43,491 INFO L124 PetriNetUnfolderBase]: 173/317 cut-off events. [2024-11-28 02:55:43,491 INFO L125 PetriNetUnfolderBase]: For 589/589 co-relation queries the response was YES. [2024-11-28 02:55:43,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1140 conditions, 317 events. 173/317 cut-off events. For 589/589 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1193 event pairs, 24 based on Foata normal form. 2/315 useless extension candidates. Maximal degree in co-relation 1080. Up to 221 conditions per place. [2024-11-28 02:55:43,497 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 55 selfloop transitions, 26 changer transitions 7/89 dead transitions. [2024-11-28 02:55:43,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 657 flow [2024-11-28 02:55:43,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:55:43,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 02:55:43,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-11-28 02:55:43,502 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-11-28 02:55:43,502 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 232 flow. Second operand 12 states and 116 transitions. [2024-11-28 02:55:43,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 657 flow [2024-11-28 02:55:43,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 89 transitions, 595 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-11-28 02:55:43,513 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 414 flow [2024-11-28 02:55:43,513 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=414, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2024-11-28 02:55:43,515 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 37 predicate places. [2024-11-28 02:55:43,516 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 414 flow [2024-11-28 02:55:43,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:43,516 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:43,516 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:43,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:55:43,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:43,717 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:55:43,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:43,718 INFO L85 PathProgramCache]: Analyzing trace with hash 940387487, now seen corresponding path program 3 times [2024-11-28 02:55:43,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:43,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976503849] [2024-11-28 02:55:43,718 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:55:43,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:43,732 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:55:43,732 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:43,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:43,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976503849] [2024-11-28 02:55:43,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976503849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:43,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074635206] [2024-11-28 02:55:43,930 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:55:43,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:43,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:43,935 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:43,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:55:43,994 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:55:43,994 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:43,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:55:43,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:44,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:44,123 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:55:44,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:44,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074635206] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:55:44,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:55:44,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 6] total 14 [2024-11-28 02:55:44,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051147694] [2024-11-28 02:55:44,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:55:44,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:55:44,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:44,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:55:44,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:55:44,322 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:55:44,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 414 flow. Second operand has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:44,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:44,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:55:44,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:44,710 INFO L124 PetriNetUnfolderBase]: 204/377 cut-off events. [2024-11-28 02:55:44,710 INFO L125 PetriNetUnfolderBase]: For 1067/1067 co-relation queries the response was YES. [2024-11-28 02:55:44,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 377 events. 204/377 cut-off events. For 1067/1067 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1514 event pairs, 28 based on Foata normal form. 3/378 useless extension candidates. Maximal degree in co-relation 1471. Up to 268 conditions per place. [2024-11-28 02:55:44,714 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 61 selfloop transitions, 33 changer transitions 12/107 dead transitions. [2024-11-28 02:55:44,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 107 transitions, 889 flow [2024-11-28 02:55:44,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:55:44,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 02:55:44,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 126 transitions. [2024-11-28 02:55:44,716 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-28 02:55:44,716 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 414 flow. Second operand 14 states and 126 transitions. [2024-11-28 02:55:44,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 107 transitions, 889 flow [2024-11-28 02:55:44,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 107 transitions, 801 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-11-28 02:55:44,727 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 569 flow [2024-11-28 02:55:44,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=569, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2024-11-28 02:55:44,728 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 53 predicate places. [2024-11-28 02:55:44,728 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 569 flow [2024-11-28 02:55:44,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:44,728 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:44,728 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:44,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:55:44,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 02:55:44,929 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:55:44,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:44,930 INFO L85 PathProgramCache]: Analyzing trace with hash -536542371, now seen corresponding path program 1 times [2024-11-28 02:55:44,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:44,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255037449] [2024-11-28 02:55:44,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:44,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:45,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:45,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:45,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255037449] [2024-11-28 02:55:45,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255037449] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:45,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419098837] [2024-11-28 02:55:45,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:45,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:45,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:45,489 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:45,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:55:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:45,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:55:45,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:45,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:45,931 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:55:46,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:46,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419098837] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:55:46,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:55:46,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-28 02:55:46,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941213448] [2024-11-28 02:55:46,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:55:46,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:55:46,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:46,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:55:46,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:55:46,977 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:55:46,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 569 flow. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:46,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:46,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:55:46,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:48,558 INFO L124 PetriNetUnfolderBase]: 270/516 cut-off events. [2024-11-28 02:55:48,559 INFO L125 PetriNetUnfolderBase]: For 2047/2047 co-relation queries the response was YES. [2024-11-28 02:55:48,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2212 conditions, 516 events. 270/516 cut-off events. For 2047/2047 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2396 event pairs, 16 based on Foata normal form. 3/517 useless extension candidates. Maximal degree in co-relation 2138. Up to 239 conditions per place. [2024-11-28 02:55:48,565 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 89 selfloop transitions, 61 changer transitions 31/182 dead transitions. [2024-11-28 02:55:48,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 182 transitions, 1469 flow [2024-11-28 02:55:48,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 02:55:48,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-28 02:55:48,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 223 transitions. [2024-11-28 02:55:48,567 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46458333333333335 [2024-11-28 02:55:48,567 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 569 flow. Second operand 24 states and 223 transitions. [2024-11-28 02:55:48,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 182 transitions, 1469 flow [2024-11-28 02:55:48,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 182 transitions, 1332 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-11-28 02:55:48,587 INFO L231 Difference]: Finished difference. Result has 102 places, 105 transitions, 801 flow [2024-11-28 02:55:48,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=801, PETRI_PLACES=102, PETRI_TRANSITIONS=105} [2024-11-28 02:55:48,591 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 80 predicate places. [2024-11-28 02:55:48,591 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 105 transitions, 801 flow [2024-11-28 02:55:48,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:48,591 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:48,591 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:48,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:55:48,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 02:55:48,792 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:55:48,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:48,793 INFO L85 PathProgramCache]: Analyzing trace with hash 863951125, now seen corresponding path program 2 times [2024-11-28 02:55:48,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:48,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614081648] [2024-11-28 02:55:48,793 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:55:48,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:48,818 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:55:48,819 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:49,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:49,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:49,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614081648] [2024-11-28 02:55:49,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614081648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:49,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770493403] [2024-11-28 02:55:49,465 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:55:49,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:49,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:49,468 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:49,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:55:49,673 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:55:49,673 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:49,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:55:49,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:49,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:49,938 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:55:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:50,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770493403] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:55:50,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:55:50,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-28 02:55:50,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194769799] [2024-11-28 02:55:50,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:55:50,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:55:50,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:50,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:55:50,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:55:50,628 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:55:50,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 105 transitions, 801 flow. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:50,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:50,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:55:50,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:52,568 INFO L124 PetriNetUnfolderBase]: 317/633 cut-off events. [2024-11-28 02:55:52,568 INFO L125 PetriNetUnfolderBase]: For 5403/5403 co-relation queries the response was YES. [2024-11-28 02:55:52,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3222 conditions, 633 events. 317/633 cut-off events. For 5403/5403 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3207 event pairs, 18 based on Foata normal form. 3/630 useless extension candidates. Maximal degree in co-relation 3079. Up to 271 conditions per place. [2024-11-28 02:55:52,575 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 107 selfloop transitions, 89 changer transitions 19/216 dead transitions. [2024-11-28 02:55:52,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 216 transitions, 2112 flow [2024-11-28 02:55:52,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 02:55:52,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-28 02:55:52,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 273 transitions. [2024-11-28 02:55:52,579 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.455 [2024-11-28 02:55:52,579 INFO L175 Difference]: Start difference. First operand has 102 places, 105 transitions, 801 flow. Second operand 30 states and 273 transitions. [2024-11-28 02:55:52,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 216 transitions, 2112 flow [2024-11-28 02:55:52,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 216 transitions, 1840 flow, removed 114 selfloop flow, removed 12 redundant places. [2024-11-28 02:55:52,604 INFO L231 Difference]: Finished difference. Result has 130 places, 137 transitions, 1307 flow [2024-11-28 02:55:52,606 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1307, PETRI_PLACES=130, PETRI_TRANSITIONS=137} [2024-11-28 02:55:52,606 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 108 predicate places. [2024-11-28 02:55:52,607 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 137 transitions, 1307 flow [2024-11-28 02:55:52,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:52,608 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:52,608 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:52,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:55:52,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 02:55:52,809 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:55:52,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:52,809 INFO L85 PathProgramCache]: Analyzing trace with hash 947068015, now seen corresponding path program 3 times [2024-11-28 02:55:52,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:52,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136332513] [2024-11-28 02:55:52,809 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:55:52,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:52,828 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:55:52,829 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:53,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:53,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136332513] [2024-11-28 02:55:53,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136332513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:53,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564456968] [2024-11-28 02:55:53,506 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:55:53,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:53,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:53,509 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:53,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:55:53,607 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:55:53,607 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:53,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:55:53,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:53,821 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:55:54,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:54,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564456968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:55:54,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:55:54,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-28 02:55:54,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840375054] [2024-11-28 02:55:54,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:55:54,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:55:54,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:54,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:55:54,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:55:54,263 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:55:54,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 137 transitions, 1307 flow. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:54,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:54,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:55:54,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:56,013 INFO L124 PetriNetUnfolderBase]: 310/605 cut-off events. [2024-11-28 02:55:56,013 INFO L125 PetriNetUnfolderBase]: For 6569/6569 co-relation queries the response was YES. [2024-11-28 02:55:56,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3389 conditions, 605 events. 310/605 cut-off events. For 6569/6569 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2985 event pairs, 18 based on Foata normal form. 4/605 useless extension candidates. Maximal degree in co-relation 3262. Up to 274 conditions per place. [2024-11-28 02:55:56,020 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 95 selfloop transitions, 90 changer transitions 15/201 dead transitions. [2024-11-28 02:55:56,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 201 transitions, 2050 flow [2024-11-28 02:55:56,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 02:55:56,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-28 02:55:56,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 235 transitions. [2024-11-28 02:55:56,023 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2024-11-28 02:55:56,023 INFO L175 Difference]: Start difference. First operand has 130 places, 137 transitions, 1307 flow. Second operand 26 states and 235 transitions. [2024-11-28 02:55:56,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 201 transitions, 2050 flow [2024-11-28 02:55:56,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 201 transitions, 1723 flow, removed 142 selfloop flow, removed 13 redundant places. [2024-11-28 02:55:56,060 INFO L231 Difference]: Finished difference. Result has 144 places, 142 transitions, 1340 flow [2024-11-28 02:55:56,061 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1340, PETRI_PLACES=144, PETRI_TRANSITIONS=142} [2024-11-28 02:55:56,061 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 122 predicate places. [2024-11-28 02:55:56,061 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 142 transitions, 1340 flow [2024-11-28 02:55:56,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:56,062 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:56,062 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:56,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:55:56,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 02:55:56,266 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:55:56,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:56,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1344165069, now seen corresponding path program 4 times [2024-11-28 02:55:56,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:56,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766091585] [2024-11-28 02:55:56,267 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:55:56,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:56,301 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:55:56,301 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:56,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:56,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:56,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766091585] [2024-11-28 02:55:56,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766091585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:56,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143904173] [2024-11-28 02:55:56,777 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:55:56,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:56,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:56,779 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:56,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:55:56,842 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:55:56,842 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:56,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:55:56,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:57,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:57,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:56:10,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:10,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143904173] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:56:10,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:56:10,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-28 02:56:10,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979736748] [2024-11-28 02:56:10,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:56:10,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:56:10,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:10,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:56:10,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=236, Unknown=3, NotChecked=0, Total=306 [2024-11-28 02:56:10,414 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:56:10,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 142 transitions, 1340 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:10,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:10,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:56:10,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:56:11,977 INFO L124 PetriNetUnfolderBase]: 349/675 cut-off events. [2024-11-28 02:56:11,977 INFO L125 PetriNetUnfolderBase]: For 8954/8954 co-relation queries the response was YES. [2024-11-28 02:56:11,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3908 conditions, 675 events. 349/675 cut-off events. For 8954/8954 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3394 event pairs, 35 based on Foata normal form. 3/672 useless extension candidates. Maximal degree in co-relation 3797. Up to 531 conditions per place. [2024-11-28 02:56:11,984 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 143 selfloop transitions, 46 changer transitions 14/204 dead transitions. [2024-11-28 02:56:11,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 204 transitions, 2273 flow [2024-11-28 02:56:11,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:56:11,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-28 02:56:11,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 164 transitions. [2024-11-28 02:56:11,986 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-11-28 02:56:11,986 INFO L175 Difference]: Start difference. First operand has 144 places, 142 transitions, 1340 flow. Second operand 18 states and 164 transitions. [2024-11-28 02:56:11,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 204 transitions, 2273 flow [2024-11-28 02:56:12,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 204 transitions, 1877 flow, removed 123 selfloop flow, removed 27 redundant places. [2024-11-28 02:56:12,037 INFO L231 Difference]: Finished difference. Result has 138 places, 163 transitions, 1459 flow [2024-11-28 02:56:12,038 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1459, PETRI_PLACES=138, PETRI_TRANSITIONS=163} [2024-11-28 02:56:12,038 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 116 predicate places. [2024-11-28 02:56:12,038 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 163 transitions, 1459 flow [2024-11-28 02:56:12,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:12,039 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:12,039 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:12,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 02:56:12,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 02:56:12,240 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:56:12,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:12,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1085507208, now seen corresponding path program 4 times [2024-11-28 02:56:12,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:12,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665364951] [2024-11-28 02:56:12,241 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:56:12,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:12,262 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:56:12,262 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:12,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:12,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:12,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665364951] [2024-11-28 02:56:12,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665364951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:12,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600751964] [2024-11-28 02:56:12,505 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:56:12,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:12,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:12,507 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:56:12,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:56:12,562 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:56:12,562 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:12,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 02:56:12,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:56:12,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:12,757 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:56:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:12,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600751964] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:56:12,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:56:12,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15 [2024-11-28 02:56:12,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066590676] [2024-11-28 02:56:12,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:56:12,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:56:12,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:12,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:56:12,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:56:12,979 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:56:12,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 163 transitions, 1459 flow. Second operand has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:12,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:12,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:56:12,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:56:13,517 INFO L124 PetriNetUnfolderBase]: 341/663 cut-off events. [2024-11-28 02:56:13,517 INFO L125 PetriNetUnfolderBase]: For 2832/2832 co-relation queries the response was YES. [2024-11-28 02:56:13,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3419 conditions, 663 events. 341/663 cut-off events. For 2832/2832 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3360 event pairs, 31 based on Foata normal form. 4/657 useless extension candidates. Maximal degree in co-relation 3338. Up to 533 conditions per place. [2024-11-28 02:56:13,525 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 142 selfloop transitions, 30 changer transitions 25/198 dead transitions. [2024-11-28 02:56:13,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 198 transitions, 2035 flow [2024-11-28 02:56:13,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:56:13,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 02:56:13,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 122 transitions. [2024-11-28 02:56:13,528 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-11-28 02:56:13,528 INFO L175 Difference]: Start difference. First operand has 138 places, 163 transitions, 1459 flow. Second operand 13 states and 122 transitions. [2024-11-28 02:56:13,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 198 transitions, 2035 flow [2024-11-28 02:56:13,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 198 transitions, 1906 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-11-28 02:56:13,555 INFO L231 Difference]: Finished difference. Result has 145 places, 159 transitions, 1369 flow [2024-11-28 02:56:13,556 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1369, PETRI_PLACES=145, PETRI_TRANSITIONS=159} [2024-11-28 02:56:13,556 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 123 predicate places. [2024-11-28 02:56:13,556 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 159 transitions, 1369 flow [2024-11-28 02:56:13,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:13,556 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:13,557 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:13,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 02:56:13,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:13,757 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:56:13,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:13,758 INFO L85 PathProgramCache]: Analyzing trace with hash -152043499, now seen corresponding path program 5 times [2024-11-28 02:56:13,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:13,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793450045] [2024-11-28 02:56:13,758 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:56:13,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:13,782 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:56:13,782 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:14,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:14,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:14,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793450045] [2024-11-28 02:56:14,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793450045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:14,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763736688] [2024-11-28 02:56:14,135 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:56:14,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:14,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:14,138 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:56:14,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:56:14,289 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:56:14,289 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:14,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:56:14,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:56:14,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:14,539 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:56:15,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:15,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763736688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:56:15,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:56:15,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2024-11-28 02:56:15,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600539353] [2024-11-28 02:56:15,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:56:15,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 02:56:15,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:15,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 02:56:15,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:56:15,682 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:56:15,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 159 transitions, 1369 flow. Second operand has 21 states, 21 states have (on average 5.857142857142857) internal successors, (123), 21 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:15,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:15,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:56:15,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:56:16,468 INFO L124 PetriNetUnfolderBase]: 340/655 cut-off events. [2024-11-28 02:56:16,469 INFO L125 PetriNetUnfolderBase]: For 2683/2683 co-relation queries the response was YES. [2024-11-28 02:56:16,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3339 conditions, 655 events. 340/655 cut-off events. For 2683/2683 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3269 event pairs, 35 based on Foata normal form. 2/643 useless extension candidates. Maximal degree in co-relation 3251. Up to 555 conditions per place. [2024-11-28 02:56:16,475 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 151 selfloop transitions, 42 changer transitions 6/200 dead transitions. [2024-11-28 02:56:16,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 200 transitions, 1998 flow [2024-11-28 02:56:16,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:56:16,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-28 02:56:16,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 153 transitions. [2024-11-28 02:56:16,477 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-11-28 02:56:16,477 INFO L175 Difference]: Start difference. First operand has 145 places, 159 transitions, 1369 flow. Second operand 18 states and 153 transitions. [2024-11-28 02:56:16,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 200 transitions, 1998 flow [2024-11-28 02:56:16,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 200 transitions, 1900 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-11-28 02:56:16,498 INFO L231 Difference]: Finished difference. Result has 151 places, 171 transitions, 1539 flow [2024-11-28 02:56:16,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1539, PETRI_PLACES=151, PETRI_TRANSITIONS=171} [2024-11-28 02:56:16,499 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 129 predicate places. [2024-11-28 02:56:16,499 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 171 transitions, 1539 flow [2024-11-28 02:56:16,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.857142857142857) internal successors, (123), 21 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:16,499 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:16,500 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:16,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 02:56:16,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 02:56:16,700 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:56:16,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:16,701 INFO L85 PathProgramCache]: Analyzing trace with hash 707425677, now seen corresponding path program 6 times [2024-11-28 02:56:16,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:16,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877193561] [2024-11-28 02:56:16,701 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:56:16,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:16,721 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 02:56:16,721 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:17,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:17,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:17,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877193561] [2024-11-28 02:56:17,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877193561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:17,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813727002] [2024-11-28 02:56:17,203 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:56:17,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:17,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:17,205 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:56:17,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:56:17,274 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 02:56:17,274 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:17,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:56:17,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:56:17,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:17,453 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:56:18,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:18,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813727002] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:56:18,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:56:18,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2024-11-28 02:56:18,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908321168] [2024-11-28 02:56:18,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:56:18,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:56:18,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:18,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:56:18,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:56:18,456 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:56:18,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 171 transitions, 1539 flow. Second operand has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:18,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:18,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:56:18,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:56:19,313 INFO L124 PetriNetUnfolderBase]: 363/703 cut-off events. [2024-11-28 02:56:19,313 INFO L125 PetriNetUnfolderBase]: For 3889/3889 co-relation queries the response was YES. [2024-11-28 02:56:19,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3805 conditions, 703 events. 363/703 cut-off events. For 3889/3889 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3557 event pairs, 33 based on Foata normal form. 2/691 useless extension candidates. Maximal degree in co-relation 3709. Up to 547 conditions per place. [2024-11-28 02:56:19,320 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 152 selfloop transitions, 55 changer transitions 8/216 dead transitions. [2024-11-28 02:56:19,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 216 transitions, 2344 flow [2024-11-28 02:56:19,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:56:19,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-28 02:56:19,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 159 transitions. [2024-11-28 02:56:19,325 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-11-28 02:56:19,325 INFO L175 Difference]: Start difference. First operand has 151 places, 171 transitions, 1539 flow. Second operand 18 states and 159 transitions. [2024-11-28 02:56:19,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 216 transitions, 2344 flow [2024-11-28 02:56:19,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 216 transitions, 2214 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-11-28 02:56:19,352 INFO L231 Difference]: Finished difference. Result has 165 places, 180 transitions, 1781 flow [2024-11-28 02:56:19,352 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1781, PETRI_PLACES=165, PETRI_TRANSITIONS=180} [2024-11-28 02:56:19,352 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 143 predicate places. [2024-11-28 02:56:19,353 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 180 transitions, 1781 flow [2024-11-28 02:56:19,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:19,353 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:19,353 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:19,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 02:56:19,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 02:56:19,554 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:56:19,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:19,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1941611175, now seen corresponding path program 7 times [2024-11-28 02:56:19,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:19,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426387655] [2024-11-28 02:56:19,555 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:56:19,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:19,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:19,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:19,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426387655] [2024-11-28 02:56:19,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426387655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:19,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884153502] [2024-11-28 02:56:19,968 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:56:19,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:19,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:19,970 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:56:19,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:56:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:20,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:56:20,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:56:20,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:20,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:56:21,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:21,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884153502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:56:21,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:56:21,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-28 02:56:21,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612299058] [2024-11-28 02:56:21,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:56:21,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:56:21,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:21,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:56:21,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:56:21,286 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:56:21,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 180 transitions, 1781 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:21,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:21,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:56:21,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:56:22,346 INFO L124 PetriNetUnfolderBase]: 400/776 cut-off events. [2024-11-28 02:56:22,347 INFO L125 PetriNetUnfolderBase]: For 6687/6687 co-relation queries the response was YES. [2024-11-28 02:56:22,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4690 conditions, 776 events. 400/776 cut-off events. For 6687/6687 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4054 event pairs, 34 based on Foata normal form. 2/766 useless extension candidates. Maximal degree in co-relation 4578. Up to 582 conditions per place. [2024-11-28 02:56:22,354 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 165 selfloop transitions, 62 changer transitions 8/236 dead transitions. [2024-11-28 02:56:22,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 236 transitions, 2844 flow [2024-11-28 02:56:22,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 02:56:22,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-28 02:56:22,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 167 transitions. [2024-11-28 02:56:22,356 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4394736842105263 [2024-11-28 02:56:22,356 INFO L175 Difference]: Start difference. First operand has 165 places, 180 transitions, 1781 flow. Second operand 19 states and 167 transitions. [2024-11-28 02:56:22,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 236 transitions, 2844 flow [2024-11-28 02:56:22,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 236 transitions, 2674 flow, removed 63 selfloop flow, removed 13 redundant places. [2024-11-28 02:56:22,393 INFO L231 Difference]: Finished difference. Result has 177 places, 197 transitions, 2151 flow [2024-11-28 02:56:22,394 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2151, PETRI_PLACES=177, PETRI_TRANSITIONS=197} [2024-11-28 02:56:22,394 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 155 predicate places. [2024-11-28 02:56:22,395 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 197 transitions, 2151 flow [2024-11-28 02:56:22,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:22,395 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:22,395 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:22,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 02:56:22,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 02:56:22,596 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:56:22,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:22,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1739773200, now seen corresponding path program 4 times [2024-11-28 02:56:22,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:22,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232913883] [2024-11-28 02:56:22,596 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:56:22,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:22,608 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:56:22,608 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:22,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:22,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232913883] [2024-11-28 02:56:22,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232913883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:22,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036375980] [2024-11-28 02:56:22,772 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:56:22,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:22,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:22,774 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:56:22,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:56:22,834 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:56:22,834 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:22,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:56:22,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:56:22,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:22,996 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:56:27,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:27,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036375980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:56:27,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:56:27,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2024-11-28 02:56:27,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048392934] [2024-11-28 02:56:27,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:56:27,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:56:27,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:27,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:56:27,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=110, Unknown=1, NotChecked=0, Total=156 [2024-11-28 02:56:27,846 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:56:27,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 197 transitions, 2151 flow. Second operand has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:27,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:27,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:56:27,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:56:28,473 INFO L124 PetriNetUnfolderBase]: 401/781 cut-off events. [2024-11-28 02:56:28,473 INFO L125 PetriNetUnfolderBase]: For 7124/7124 co-relation queries the response was YES. [2024-11-28 02:56:28,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4880 conditions, 781 events. 401/781 cut-off events. For 7124/7124 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4082 event pairs, 34 based on Foata normal form. 3/770 useless extension candidates. Maximal degree in co-relation 4771. Up to 662 conditions per place. [2024-11-28 02:56:28,482 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 174 selfloop transitions, 27 changer transitions 19/221 dead transitions. [2024-11-28 02:56:28,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 221 transitions, 2756 flow [2024-11-28 02:56:28,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:56:28,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 02:56:28,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-11-28 02:56:28,483 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4727272727272727 [2024-11-28 02:56:28,483 INFO L175 Difference]: Start difference. First operand has 177 places, 197 transitions, 2151 flow. Second operand 11 states and 104 transitions. [2024-11-28 02:56:28,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 221 transitions, 2756 flow [2024-11-28 02:56:28,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 221 transitions, 2445 flow, removed 135 selfloop flow, removed 8 redundant places. [2024-11-28 02:56:28,553 INFO L231 Difference]: Finished difference. Result has 180 places, 191 transitions, 1831 flow [2024-11-28 02:56:28,554 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1837, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1831, PETRI_PLACES=180, PETRI_TRANSITIONS=191} [2024-11-28 02:56:28,554 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 158 predicate places. [2024-11-28 02:56:28,554 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 191 transitions, 1831 flow [2024-11-28 02:56:28,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:28,555 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:28,555 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:28,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 02:56:28,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:56:28,759 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:56:28,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:28,760 INFO L85 PathProgramCache]: Analyzing trace with hash 806309491, now seen corresponding path program 8 times [2024-11-28 02:56:28,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:28,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835937305] [2024-11-28 02:56:28,760 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:56:28,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:28,773 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:56:28,773 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:29,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:29,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:29,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835937305] [2024-11-28 02:56:29,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835937305] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:29,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600968455] [2024-11-28 02:56:29,373 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:56:29,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:29,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:29,375 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:56:29,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:56:29,648 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:56:29,648 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:29,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:56:29,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:56:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:29,935 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:56:31,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:31,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600968455] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:56:31,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:56:31,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-28 02:56:31,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65225147] [2024-11-28 02:56:31,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:56:31,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:56:31,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:31,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:56:31,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:56:31,985 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:56:31,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 191 transitions, 1831 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:31,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:31,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:56:31,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:56:33,057 INFO L124 PetriNetUnfolderBase]: 395/773 cut-off events. [2024-11-28 02:56:33,058 INFO L125 PetriNetUnfolderBase]: For 6738/6738 co-relation queries the response was YES. [2024-11-28 02:56:33,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4575 conditions, 773 events. 395/773 cut-off events. For 6738/6738 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4033 event pairs, 38 based on Foata normal form. 3/758 useless extension candidates. Maximal degree in co-relation 4495. Up to 669 conditions per place. [2024-11-28 02:56:33,063 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 178 selfloop transitions, 36 changer transitions 8/223 dead transitions. [2024-11-28 02:56:33,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 223 transitions, 2475 flow [2024-11-28 02:56:33,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:56:33,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 02:56:33,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 130 transitions. [2024-11-28 02:56:33,064 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-11-28 02:56:33,064 INFO L175 Difference]: Start difference. First operand has 180 places, 191 transitions, 1831 flow. Second operand 15 states and 130 transitions. [2024-11-28 02:56:33,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 223 transitions, 2475 flow [2024-11-28 02:56:33,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 223 transitions, 2377 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-11-28 02:56:33,104 INFO L231 Difference]: Finished difference. Result has 184 places, 195 transitions, 1890 flow [2024-11-28 02:56:33,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1733, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1890, PETRI_PLACES=184, PETRI_TRANSITIONS=195} [2024-11-28 02:56:33,105 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 162 predicate places. [2024-11-28 02:56:33,105 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 195 transitions, 1890 flow [2024-11-28 02:56:33,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:33,105 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:33,105 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:33,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 02:56:33,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:56:33,306 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:56:33,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:33,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1858494285, now seen corresponding path program 9 times [2024-11-28 02:56:33,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:33,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985263935] [2024-11-28 02:56:33,306 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:56:33,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:33,320 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:56:33,321 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:34,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:34,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985263935] [2024-11-28 02:56:34,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985263935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:34,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781891671] [2024-11-28 02:56:34,121 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:56:34,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:34,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:34,123 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:56:34,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:56:34,224 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:56:34,224 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:34,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:56:34,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:56:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:34,649 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:56:36,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:36,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781891671] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:56:36,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:56:36,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-28 02:56:36,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81792670] [2024-11-28 02:56:36,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:56:36,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:56:36,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:36,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:56:36,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:56:36,200 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:56:36,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 195 transitions, 1890 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:36,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:36,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:56:36,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:56:37,707 INFO L124 PetriNetUnfolderBase]: 387/745 cut-off events. [2024-11-28 02:56:37,707 INFO L125 PetriNetUnfolderBase]: For 6764/6764 co-relation queries the response was YES. [2024-11-28 02:56:37,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4416 conditions, 745 events. 387/745 cut-off events. For 6764/6764 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3799 event pairs, 35 based on Foata normal form. 2/729 useless extension candidates. Maximal degree in co-relation 4292. Up to 598 conditions per place. [2024-11-28 02:56:37,720 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 158 selfloop transitions, 57 changer transitions 8/224 dead transitions. [2024-11-28 02:56:37,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 224 transitions, 2482 flow [2024-11-28 02:56:37,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:56:37,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 02:56:37,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 144 transitions. [2024-11-28 02:56:37,722 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4235294117647059 [2024-11-28 02:56:37,722 INFO L175 Difference]: Start difference. First operand has 184 places, 195 transitions, 1890 flow. Second operand 17 states and 144 transitions. [2024-11-28 02:56:37,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 224 transitions, 2482 flow [2024-11-28 02:56:37,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 224 transitions, 2371 flow, removed 30 selfloop flow, removed 11 redundant places. [2024-11-28 02:56:37,752 INFO L231 Difference]: Finished difference. Result has 190 places, 196 transitions, 1991 flow [2024-11-28 02:56:37,752 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1991, PETRI_PLACES=190, PETRI_TRANSITIONS=196} [2024-11-28 02:56:37,753 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 168 predicate places. [2024-11-28 02:56:37,753 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 196 transitions, 1991 flow [2024-11-28 02:56:37,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:37,753 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:37,753 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:37,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 02:56:37,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 02:56:37,954 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:56:37,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:37,954 INFO L85 PathProgramCache]: Analyzing trace with hash 596550495, now seen corresponding path program 10 times [2024-11-28 02:56:37,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:37,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479495277] [2024-11-28 02:56:37,954 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:56:37,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:37,966 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:56:37,966 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:38,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:38,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:38,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479495277] [2024-11-28 02:56:38,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479495277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:38,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812857194] [2024-11-28 02:56:38,723 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:56:38,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:38,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:38,725 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:56:38,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 02:56:38,828 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:56:38,828 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:38,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:56:38,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:56:39,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:39,467 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:56:40,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:40,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812857194] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:56:40,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:56:40,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-28 02:56:40,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696941755] [2024-11-28 02:56:40,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:56:40,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:56:40,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:40,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:56:40,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:56:40,279 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:56:40,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 196 transitions, 1991 flow. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:40,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:40,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:56:40,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:56:45,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:56:47,003 INFO L124 PetriNetUnfolderBase]: 467/894 cut-off events. [2024-11-28 02:56:47,003 INFO L125 PetriNetUnfolderBase]: For 13609/13609 co-relation queries the response was YES. [2024-11-28 02:56:47,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5897 conditions, 894 events. 467/894 cut-off events. For 13609/13609 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4814 event pairs, 36 based on Foata normal form. 3/883 useless extension candidates. Maximal degree in co-relation 5759. Up to 628 conditions per place. [2024-11-28 02:56:47,010 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 173 selfloop transitions, 85 changer transitions 18/277 dead transitions. [2024-11-28 02:56:47,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 277 transitions, 3517 flow [2024-11-28 02:56:47,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 02:56:47,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-28 02:56:47,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 217 transitions. [2024-11-28 02:56:47,012 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.434 [2024-11-28 02:56:47,012 INFO L175 Difference]: Start difference. First operand has 190 places, 196 transitions, 1991 flow. Second operand 25 states and 217 transitions. [2024-11-28 02:56:47,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 277 transitions, 3517 flow [2024-11-28 02:56:47,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 277 transitions, 3310 flow, removed 61 selfloop flow, removed 13 redundant places. [2024-11-28 02:56:47,054 INFO L231 Difference]: Finished difference. Result has 205 places, 225 transitions, 2567 flow [2024-11-28 02:56:47,054 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2567, PETRI_PLACES=205, PETRI_TRANSITIONS=225} [2024-11-28 02:56:47,054 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 183 predicate places. [2024-11-28 02:56:47,055 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 225 transitions, 2567 flow [2024-11-28 02:56:47,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:47,055 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:47,055 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:47,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 02:56:47,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:47,255 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:56:47,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:47,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1320638707, now seen corresponding path program 11 times [2024-11-28 02:56:47,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:47,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211685819] [2024-11-28 02:56:47,256 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:56:47,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:47,266 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:56:47,266 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:48,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:48,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:48,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211685819] [2024-11-28 02:56:48,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211685819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:48,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723461620] [2024-11-28 02:56:48,176 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:56:48,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:48,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:48,180 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:56:48,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 02:56:48,256 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:56:48,256 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:48,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:56:48,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:56:48,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:48,718 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:56:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:50,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723461620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:56:50,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:56:50,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2024-11-28 02:56:50,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217869532] [2024-11-28 02:56:50,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:56:50,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:56:50,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:50,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:56:50,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:56:50,045 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:56:50,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 225 transitions, 2567 flow. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:50,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:50,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:56:50,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:56:51,885 INFO L124 PetriNetUnfolderBase]: 485/919 cut-off events. [2024-11-28 02:56:51,885 INFO L125 PetriNetUnfolderBase]: For 15508/15508 co-relation queries the response was YES. [2024-11-28 02:56:51,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6400 conditions, 919 events. 485/919 cut-off events. For 15508/15508 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4928 event pairs, 41 based on Foata normal form. 2/909 useless extension candidates. Maximal degree in co-relation 6265. Up to 775 conditions per place. [2024-11-28 02:56:51,896 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 205 selfloop transitions, 53 changer transitions 8/267 dead transitions. [2024-11-28 02:56:51,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 267 transitions, 3536 flow [2024-11-28 02:56:51,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:56:51,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 02:56:51,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 164 transitions. [2024-11-28 02:56:51,897 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-11-28 02:56:51,897 INFO L175 Difference]: Start difference. First operand has 205 places, 225 transitions, 2567 flow. Second operand 20 states and 164 transitions. [2024-11-28 02:56:51,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 267 transitions, 3536 flow [2024-11-28 02:56:51,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 267 transitions, 3097 flow, removed 183 selfloop flow, removed 13 redundant places. [2024-11-28 02:56:51,948 INFO L231 Difference]: Finished difference. Result has 212 places, 235 transitions, 2546 flow [2024-11-28 02:56:51,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2546, PETRI_PLACES=212, PETRI_TRANSITIONS=235} [2024-11-28 02:56:51,949 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 190 predicate places. [2024-11-28 02:56:51,949 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 235 transitions, 2546 flow [2024-11-28 02:56:51,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:51,949 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:51,949 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:51,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 02:56:52,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:52,150 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:56:52,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:52,150 INFO L85 PathProgramCache]: Analyzing trace with hash -70876049, now seen corresponding path program 12 times [2024-11-28 02:56:52,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:52,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587888349] [2024-11-28 02:56:52,150 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:56:52,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:52,160 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 02:56:52,160 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:52,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:52,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:52,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587888349] [2024-11-28 02:56:52,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587888349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:52,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800921638] [2024-11-28 02:56:52,836 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:56:52,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:52,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:52,838 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:56:52,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 02:56:52,919 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 02:56:52,919 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:52,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:56:52,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:56:53,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:53,235 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:56:53,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:53,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800921638] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:56:53,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:56:53,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2024-11-28 02:56:53,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018815418] [2024-11-28 02:56:53,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:56:53,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:56:53,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:53,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:56:53,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:56:53,853 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:56:53,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 235 transitions, 2546 flow. Second operand has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:53,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:53,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:56:53,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:56:56,138 INFO L124 PetriNetUnfolderBase]: 488/934 cut-off events. [2024-11-28 02:56:56,139 INFO L125 PetriNetUnfolderBase]: For 14651/14651 co-relation queries the response was YES. [2024-11-28 02:56:56,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6103 conditions, 934 events. 488/934 cut-off events. For 14651/14651 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5068 event pairs, 36 based on Foata normal form. 3/925 useless extension candidates. Maximal degree in co-relation 5980. Up to 681 conditions per place. [2024-11-28 02:56:56,150 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 186 selfloop transitions, 92 changer transitions 12/291 dead transitions. [2024-11-28 02:56:56,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 291 transitions, 3568 flow [2024-11-28 02:56:56,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 02:56:56,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-28 02:56:56,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 218 transitions. [2024-11-28 02:56:56,154 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.436 [2024-11-28 02:56:56,154 INFO L175 Difference]: Start difference. First operand has 212 places, 235 transitions, 2546 flow. Second operand 25 states and 218 transitions. [2024-11-28 02:56:56,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 291 transitions, 3568 flow [2024-11-28 02:56:56,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 291 transitions, 3327 flow, removed 88 selfloop flow, removed 17 redundant places. [2024-11-28 02:56:56,243 INFO L231 Difference]: Finished difference. Result has 223 places, 242 transitions, 2719 flow [2024-11-28 02:56:56,243 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2298, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2719, PETRI_PLACES=223, PETRI_TRANSITIONS=242} [2024-11-28 02:56:56,244 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 201 predicate places. [2024-11-28 02:56:56,244 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 242 transitions, 2719 flow [2024-11-28 02:56:56,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:56,244 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:56,244 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:56,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 02:56:56,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:56,445 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:56:56,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:56,445 INFO L85 PathProgramCache]: Analyzing trace with hash 385812079, now seen corresponding path program 13 times [2024-11-28 02:56:56,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:56,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759681977] [2024-11-28 02:56:56,445 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:56:56,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:56,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:56,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:56,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759681977] [2024-11-28 02:56:56,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759681977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:56,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821213853] [2024-11-28 02:56:56,956 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:56:56,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:56,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:56,958 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:56:56,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 02:56:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:57,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:56:57,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:56:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:57,281 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:56:58,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:58,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821213853] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:56:58,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:56:58,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-28 02:56:58,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764878279] [2024-11-28 02:56:58,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:56:58,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:56:58,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:58,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:56:58,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:56:58,809 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:56:58,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 242 transitions, 2719 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:58,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:58,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:56:58,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:56:59,660 INFO L124 PetriNetUnfolderBase]: 497/947 cut-off events. [2024-11-28 02:56:59,661 INFO L125 PetriNetUnfolderBase]: For 15376/15376 co-relation queries the response was YES. [2024-11-28 02:56:59,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6433 conditions, 947 events. 497/947 cut-off events. For 15376/15376 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5143 event pairs, 46 based on Foata normal form. 2/939 useless extension candidates. Maximal degree in co-relation 6345. Up to 866 conditions per place. [2024-11-28 02:56:59,667 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 228 selfloop transitions, 36 changer transitions 6/271 dead transitions. [2024-11-28 02:56:59,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 271 transitions, 3616 flow [2024-11-28 02:56:59,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:56:59,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 02:56:59,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 123 transitions. [2024-11-28 02:56:59,669 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-11-28 02:56:59,669 INFO L175 Difference]: Start difference. First operand has 223 places, 242 transitions, 2719 flow. Second operand 15 states and 123 transitions. [2024-11-28 02:56:59,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 271 transitions, 3616 flow [2024-11-28 02:56:59,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 271 transitions, 3350 flow, removed 73 selfloop flow, removed 15 redundant places. [2024-11-28 02:56:59,740 INFO L231 Difference]: Finished difference. Result has 223 places, 250 transitions, 2804 flow [2024-11-28 02:56:59,740 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2453, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2804, PETRI_PLACES=223, PETRI_TRANSITIONS=250} [2024-11-28 02:56:59,741 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 201 predicate places. [2024-11-28 02:56:59,741 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 250 transitions, 2804 flow [2024-11-28 02:56:59,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:59,741 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:59,741 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:59,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 02:56:59,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:59,942 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:56:59,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:59,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1162164365, now seen corresponding path program 14 times [2024-11-28 02:56:59,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:59,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481734246] [2024-11-28 02:56:59,942 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:56:59,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:59,953 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:56:59,953 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:00,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:00,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:00,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481734246] [2024-11-28 02:57:00,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481734246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:00,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674730307] [2024-11-28 02:57:00,497 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:57:00,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:00,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:00,500 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:00,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 02:57:00,549 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:57:00,549 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:00,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:57:00,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:00,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:00,876 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:02,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:02,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674730307] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:02,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:02,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2024-11-28 02:57:02,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90561644] [2024-11-28 02:57:02,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:02,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:57:02,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:02,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:57:02,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:57:02,406 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:57:02,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 250 transitions, 2804 flow. Second operand has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:02,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:02,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:57:02,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:04,454 INFO L124 PetriNetUnfolderBase]: 522/1000 cut-off events. [2024-11-28 02:57:04,454 INFO L125 PetriNetUnfolderBase]: For 19540/19540 co-relation queries the response was YES. [2024-11-28 02:57:04,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7029 conditions, 1000 events. 522/1000 cut-off events. For 19540/19540 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5509 event pairs, 42 based on Foata normal form. 2/992 useless extension candidates. Maximal degree in co-relation 6876. Up to 847 conditions per place. [2024-11-28 02:57:04,459 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 226 selfloop transitions, 58 changer transitions 8/293 dead transitions. [2024-11-28 02:57:04,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 293 transitions, 3990 flow [2024-11-28 02:57:04,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 02:57:04,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-28 02:57:04,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 158 transitions. [2024-11-28 02:57:04,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41578947368421054 [2024-11-28 02:57:04,460 INFO L175 Difference]: Start difference. First operand has 223 places, 250 transitions, 2804 flow. Second operand 19 states and 158 transitions. [2024-11-28 02:57:04,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 293 transitions, 3990 flow [2024-11-28 02:57:04,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 293 transitions, 3683 flow, removed 123 selfloop flow, removed 12 redundant places. [2024-11-28 02:57:04,526 INFO L231 Difference]: Finished difference. Result has 231 places, 261 transitions, 2977 flow [2024-11-28 02:57:04,526 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2541, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2977, PETRI_PLACES=231, PETRI_TRANSITIONS=261} [2024-11-28 02:57:04,527 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 209 predicate places. [2024-11-28 02:57:04,527 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 261 transitions, 2977 flow [2024-11-28 02:57:04,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:04,527 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:04,527 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:04,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 02:57:04,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 02:57:04,728 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:57:04,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:04,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1245281255, now seen corresponding path program 15 times [2024-11-28 02:57:04,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:04,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454834815] [2024-11-28 02:57:04,729 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:57:04,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:04,738 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:57:04,738 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:05,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:05,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:05,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454834815] [2024-11-28 02:57:05,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454834815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:05,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005348134] [2024-11-28 02:57:05,222 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:57:05,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:05,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:05,224 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:05,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 02:57:05,306 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:57:05,306 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:05,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:57:05,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:05,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:05,607 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:06,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:06,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005348134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:06,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:06,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2024-11-28 02:57:06,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859602528] [2024-11-28 02:57:06,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:06,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:57:06,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:06,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:57:06,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:57:06,725 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:57:06,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 261 transitions, 2977 flow. Second operand has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:06,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:06,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:57:06,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:07,992 INFO L124 PetriNetUnfolderBase]: 520/994 cut-off events. [2024-11-28 02:57:07,992 INFO L125 PetriNetUnfolderBase]: For 17801/17801 co-relation queries the response was YES. [2024-11-28 02:57:07,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6882 conditions, 994 events. 520/994 cut-off events. For 17801/17801 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5454 event pairs, 44 based on Foata normal form. 2/988 useless extension candidates. Maximal degree in co-relation 6743. Up to 849 conditions per place. [2024-11-28 02:57:07,998 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 224 selfloop transitions, 58 changer transitions 7/290 dead transitions. [2024-11-28 02:57:07,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 290 transitions, 3845 flow [2024-11-28 02:57:07,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:57:07,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 02:57:07,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 145 transitions. [2024-11-28 02:57:08,000 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4264705882352941 [2024-11-28 02:57:08,000 INFO L175 Difference]: Start difference. First operand has 231 places, 261 transitions, 2977 flow. Second operand 17 states and 145 transitions. [2024-11-28 02:57:08,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 290 transitions, 3845 flow [2024-11-28 02:57:08,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 290 transitions, 3536 flow, removed 128 selfloop flow, removed 10 redundant places. [2024-11-28 02:57:08,078 INFO L231 Difference]: Finished difference. Result has 237 places, 263 transitions, 2990 flow [2024-11-28 02:57:08,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2710, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2990, PETRI_PLACES=237, PETRI_TRANSITIONS=263} [2024-11-28 02:57:08,078 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 215 predicate places. [2024-11-28 02:57:08,078 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 263 transitions, 2990 flow [2024-11-28 02:57:08,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:08,079 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:08,079 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:08,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-28 02:57:08,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 02:57:08,279 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:57:08,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:08,280 INFO L85 PathProgramCache]: Analyzing trace with hash -930345225, now seen corresponding path program 16 times [2024-11-28 02:57:08,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:08,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952512785] [2024-11-28 02:57:08,280 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:57:08,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:08,289 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:57:08,289 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:08,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:08,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:08,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952512785] [2024-11-28 02:57:08,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952512785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:08,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534960801] [2024-11-28 02:57:08,778 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:57:08,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:08,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:08,779 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:08,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 02:57:08,837 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:57:08,837 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:08,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:57:08,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:09,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:09,393 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:10,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534960801] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:10,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:10,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-28 02:57:10,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3647145] [2024-11-28 02:57:10,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:10,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:57:10,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:10,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:57:10,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:57:10,158 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:57:10,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 263 transitions, 2990 flow. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:10,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:10,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:57:10,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:14,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:57:16,266 INFO L124 PetriNetUnfolderBase]: 529/1022 cut-off events. [2024-11-28 02:57:16,266 INFO L125 PetriNetUnfolderBase]: For 19417/19417 co-relation queries the response was YES. [2024-11-28 02:57:16,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6968 conditions, 1022 events. 529/1022 cut-off events. For 19417/19417 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5722 event pairs, 42 based on Foata normal form. 4/1016 useless extension candidates. Maximal degree in co-relation 6826. Up to 822 conditions per place. [2024-11-28 02:57:16,275 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 228 selfloop transitions, 71 changer transitions 13/313 dead transitions. [2024-11-28 02:57:16,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 313 transitions, 4118 flow [2024-11-28 02:57:16,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 02:57:16,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 02:57:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 188 transitions. [2024-11-28 02:57:16,277 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-11-28 02:57:16,277 INFO L175 Difference]: Start difference. First operand has 237 places, 263 transitions, 2990 flow. Second operand 22 states and 188 transitions. [2024-11-28 02:57:16,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 313 transitions, 4118 flow [2024-11-28 02:57:16,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 313 transitions, 3971 flow, removed 56 selfloop flow, removed 11 redundant places. [2024-11-28 02:57:16,398 INFO L231 Difference]: Finished difference. Result has 255 places, 271 transitions, 3265 flow [2024-11-28 02:57:16,398 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2859, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3265, PETRI_PLACES=255, PETRI_TRANSITIONS=271} [2024-11-28 02:57:16,399 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 233 predicate places. [2024-11-28 02:57:16,399 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 271 transitions, 3265 flow [2024-11-28 02:57:16,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:16,399 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:16,399 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:16,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 02:57:16,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:16,600 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:57:16,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:16,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1399286947, now seen corresponding path program 17 times [2024-11-28 02:57:16,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:16,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058409085] [2024-11-28 02:57:16,601 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:57:16,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:16,609 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:57:16,609 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:17,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:17,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:17,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058409085] [2024-11-28 02:57:17,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058409085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:17,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079594713] [2024-11-28 02:57:17,314 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:57:17,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:17,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:17,317 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:17,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 02:57:17,386 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:57:17,387 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:17,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:57:17,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:17,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:17,808 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:19,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079594713] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:19,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:19,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2024-11-28 02:57:19,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456625808] [2024-11-28 02:57:19,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:19,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:57:19,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:19,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:57:19,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:57:19,398 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:57:19,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 271 transitions, 3265 flow. Second operand has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:19,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:19,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:57:19,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:21,157 INFO L124 PetriNetUnfolderBase]: 525/1009 cut-off events. [2024-11-28 02:57:21,157 INFO L125 PetriNetUnfolderBase]: For 18124/18124 co-relation queries the response was YES. [2024-11-28 02:57:21,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7090 conditions, 1009 events. 525/1009 cut-off events. For 18124/18124 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5618 event pairs, 42 based on Foata normal form. 2/1001 useless extension candidates. Maximal degree in co-relation 6996. Up to 862 conditions per place. [2024-11-28 02:57:21,167 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 246 selfloop transitions, 53 changer transitions 8/308 dead transitions. [2024-11-28 02:57:21,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 308 transitions, 4098 flow [2024-11-28 02:57:21,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 02:57:21,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-28 02:57:21,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 167 transitions. [2024-11-28 02:57:21,168 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4394736842105263 [2024-11-28 02:57:21,168 INFO L175 Difference]: Start difference. First operand has 255 places, 271 transitions, 3265 flow. Second operand 19 states and 167 transitions. [2024-11-28 02:57:21,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 308 transitions, 4098 flow [2024-11-28 02:57:21,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 308 transitions, 3861 flow, removed 83 selfloop flow, removed 13 redundant places. [2024-11-28 02:57:21,300 INFO L231 Difference]: Finished difference. Result has 261 places, 274 transitions, 3253 flow [2024-11-28 02:57:21,301 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3028, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3253, PETRI_PLACES=261, PETRI_TRANSITIONS=274} [2024-11-28 02:57:21,301 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 239 predicate places. [2024-11-28 02:57:21,301 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 274 transitions, 3253 flow [2024-11-28 02:57:21,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:21,302 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:21,302 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:21,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 02:57:21,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:21,502 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:57:21,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:21,503 INFO L85 PathProgramCache]: Analyzing trace with hash -948779251, now seen corresponding path program 18 times [2024-11-28 02:57:21,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:21,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674531890] [2024-11-28 02:57:21,503 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:57:21,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:21,514 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 02:57:21,514 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:22,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:22,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:22,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674531890] [2024-11-28 02:57:22,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674531890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:22,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725065391] [2024-11-28 02:57:22,067 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:57:22,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:22,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:22,069 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:22,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 02:57:22,143 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 02:57:22,143 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:22,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:57:22,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:22,421 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:23,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725065391] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:23,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:23,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15 [2024-11-28 02:57:23,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949963607] [2024-11-28 02:57:23,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:23,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:57:23,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:23,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:57:23,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:57:23,065 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:57:23,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 274 transitions, 3253 flow. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:23,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:23,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:57:23,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:24,875 INFO L124 PetriNetUnfolderBase]: 524/1018 cut-off events. [2024-11-28 02:57:24,876 INFO L125 PetriNetUnfolderBase]: For 16590/16590 co-relation queries the response was YES. [2024-11-28 02:57:24,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7072 conditions, 1018 events. 524/1018 cut-off events. For 16590/16590 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5735 event pairs, 38 based on Foata normal form. 3/1011 useless extension candidates. Maximal degree in co-relation 6975. Up to 835 conditions per place. [2024-11-28 02:57:24,882 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 239 selfloop transitions, 70 changer transitions 15/325 dead transitions. [2024-11-28 02:57:24,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 325 transitions, 4276 flow [2024-11-28 02:57:24,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 02:57:24,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-28 02:57:24,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 198 transitions. [2024-11-28 02:57:24,884 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-11-28 02:57:24,884 INFO L175 Difference]: Start difference. First operand has 261 places, 274 transitions, 3253 flow. Second operand 24 states and 198 transitions. [2024-11-28 02:57:24,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 325 transitions, 4276 flow [2024-11-28 02:57:24,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 325 transitions, 4082 flow, removed 65 selfloop flow, removed 16 redundant places. [2024-11-28 02:57:24,967 INFO L231 Difference]: Finished difference. Result has 276 places, 280 transitions, 3404 flow [2024-11-28 02:57:24,967 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3061, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3404, PETRI_PLACES=276, PETRI_TRANSITIONS=280} [2024-11-28 02:57:24,968 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 254 predicate places. [2024-11-28 02:57:24,968 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 280 transitions, 3404 flow [2024-11-28 02:57:24,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:24,968 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:24,968 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:24,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-28 02:57:25,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 02:57:25,169 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:57:25,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:25,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1272734889, now seen corresponding path program 19 times [2024-11-28 02:57:25,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:25,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136564501] [2024-11-28 02:57:25,169 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:57:25,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:25,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:25,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:25,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136564501] [2024-11-28 02:57:25,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136564501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:25,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015434972] [2024-11-28 02:57:25,798 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:57:25,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:25,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:25,800 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:25,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 02:57:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:25,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 02:57:25,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:27,233 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:28,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:28,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015434972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:28,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:28,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2024-11-28 02:57:28,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561535508] [2024-11-28 02:57:28,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:28,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 02:57:28,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:28,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 02:57:28,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:57:28,486 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:57:28,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 280 transitions, 3404 flow. Second operand has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:28,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:28,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:57:28,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:33,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:57:41,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:57:45,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:57:52,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:57:56,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:58:01,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:58:06,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:58:06,726 INFO L124 PetriNetUnfolderBase]: 629/1204 cut-off events. [2024-11-28 02:58:06,726 INFO L125 PetriNetUnfolderBase]: For 30536/30536 co-relation queries the response was YES. [2024-11-28 02:58:06,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9419 conditions, 1204 events. 629/1204 cut-off events. For 30536/30536 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6983 event pairs, 29 based on Foata normal form. 4/1198 useless extension candidates. Maximal degree in co-relation 9317. Up to 829 conditions per place. [2024-11-28 02:58:06,735 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 267 selfloop transitions, 103 changer transitions 22/393 dead transitions. [2024-11-28 02:58:06,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 393 transitions, 5613 flow [2024-11-28 02:58:06,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 02:58:06,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-28 02:58:06,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 294 transitions. [2024-11-28 02:58:06,736 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-11-28 02:58:06,736 INFO L175 Difference]: Start difference. First operand has 276 places, 280 transitions, 3404 flow. Second operand 33 states and 294 transitions. [2024-11-28 02:58:06,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 393 transitions, 5613 flow [2024-11-28 02:58:06,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 393 transitions, 5433 flow, removed 60 selfloop flow, removed 17 redundant places. [2024-11-28 02:58:06,859 INFO L231 Difference]: Finished difference. Result has 299 places, 316 transitions, 4331 flow [2024-11-28 02:58:06,860 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3252, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=4331, PETRI_PLACES=299, PETRI_TRANSITIONS=316} [2024-11-28 02:58:06,860 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 277 predicate places. [2024-11-28 02:58:06,860 INFO L471 AbstractCegarLoop]: Abstraction has has 299 places, 316 transitions, 4331 flow [2024-11-28 02:58:06,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:06,861 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:06,861 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:06,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 02:58:07,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 02:58:07,062 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:58:07,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:07,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1130415708, now seen corresponding path program 5 times [2024-11-28 02:58:07,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:07,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453693082] [2024-11-28 02:58:07,062 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:58:07,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:07,071 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:58:07,072 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:07,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:07,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:07,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453693082] [2024-11-28 02:58:07,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453693082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:07,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976249094] [2024-11-28 02:58:07,275 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:58:07,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:07,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:07,277 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:07,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 02:58:07,334 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:58:07,334 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:07,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 02:58:07,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:07,852 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:58:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:08,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976249094] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:58:08,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:58:08,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 20 [2024-11-28 02:58:08,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968009259] [2024-11-28 02:58:08,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:58:08,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 02:58:08,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:08,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 02:58:08,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:58:08,421 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:58:08,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 316 transitions, 4331 flow. Second operand has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:08,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:08,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:58:08,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:11,557 INFO L124 PetriNetUnfolderBase]: 712/1338 cut-off events. [2024-11-28 02:58:11,557 INFO L125 PetriNetUnfolderBase]: For 35662/35662 co-relation queries the response was YES. [2024-11-28 02:58:11,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11022 conditions, 1338 events. 712/1338 cut-off events. For 35662/35662 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 7833 event pairs, 11 based on Foata normal form. 3/1331 useless extension candidates. Maximal degree in co-relation 10907. Up to 491 conditions per place. [2024-11-28 02:58:11,566 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 179 selfloop transitions, 234 changer transitions 14/428 dead transitions. [2024-11-28 02:58:11,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 428 transitions, 6598 flow [2024-11-28 02:58:11,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 02:58:11,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-28 02:58:11,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 253 transitions. [2024-11-28 02:58:11,568 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4362068965517241 [2024-11-28 02:58:11,568 INFO L175 Difference]: Start difference. First operand has 299 places, 316 transitions, 4331 flow. Second operand 29 states and 253 transitions. [2024-11-28 02:58:11,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 428 transitions, 6598 flow [2024-11-28 02:58:11,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 428 transitions, 5850 flow, removed 350 selfloop flow, removed 13 redundant places. [2024-11-28 02:58:11,771 INFO L231 Difference]: Finished difference. Result has 315 places, 358 transitions, 5295 flow [2024-11-28 02:58:11,771 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3679, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5295, PETRI_PLACES=315, PETRI_TRANSITIONS=358} [2024-11-28 02:58:11,772 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 293 predicate places. [2024-11-28 02:58:11,772 INFO L471 AbstractCegarLoop]: Abstraction has has 315 places, 358 transitions, 5295 flow [2024-11-28 02:58:11,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:11,772 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:11,772 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:11,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-28 02:58:11,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 02:58:11,974 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:58:11,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:11,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1675146592, now seen corresponding path program 6 times [2024-11-28 02:58:11,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:11,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925736080] [2024-11-28 02:58:11,974 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:58:11,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:11,984 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 02:58:11,985 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:12,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:12,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:12,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925736080] [2024-11-28 02:58:12,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925736080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:12,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179647368] [2024-11-28 02:58:12,276 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:58:12,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:12,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:12,278 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:12,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 02:58:12,328 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 02:58:12,328 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:12,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 02:58:12,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:12,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:12,890 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:58:13,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:13,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179647368] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:58:13,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:58:13,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 20 [2024-11-28 02:58:13,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038473549] [2024-11-28 02:58:13,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:58:13,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 02:58:13,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:13,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 02:58:13,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:58:13,449 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:58:13,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 358 transitions, 5295 flow. Second operand has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:13,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:13,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:58:13,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:16,104 INFO L124 PetriNetUnfolderBase]: 731/1369 cut-off events. [2024-11-28 02:58:16,104 INFO L125 PetriNetUnfolderBase]: For 35865/35865 co-relation queries the response was YES. [2024-11-28 02:58:16,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11523 conditions, 1369 events. 731/1369 cut-off events. For 35865/35865 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8044 event pairs, 12 based on Foata normal form. 4/1373 useless extension candidates. Maximal degree in co-relation 11384. Up to 707 conditions per place. [2024-11-28 02:58:16,115 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 229 selfloop transitions, 190 changer transitions 12/432 dead transitions. [2024-11-28 02:58:16,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 432 transitions, 7069 flow [2024-11-28 02:58:16,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 02:58:16,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-28 02:58:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 243 transitions. [2024-11-28 02:58:16,116 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4189655172413793 [2024-11-28 02:58:16,116 INFO L175 Difference]: Start difference. First operand has 315 places, 358 transitions, 5295 flow. Second operand 29 states and 243 transitions. [2024-11-28 02:58:16,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 432 transitions, 7069 flow [2024-11-28 02:58:16,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 432 transitions, 6640 flow, removed 147 selfloop flow, removed 20 redundant places. [2024-11-28 02:58:16,380 INFO L231 Difference]: Finished difference. Result has 326 places, 374 transitions, 5814 flow [2024-11-28 02:58:16,381 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4948, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5814, PETRI_PLACES=326, PETRI_TRANSITIONS=374} [2024-11-28 02:58:16,381 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 304 predicate places. [2024-11-28 02:58:16,381 INFO L471 AbstractCegarLoop]: Abstraction has has 326 places, 374 transitions, 5814 flow [2024-11-28 02:58:16,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:16,381 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:16,382 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:16,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 02:58:16,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:16,582 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:58:16,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:16,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1150133816, now seen corresponding path program 20 times [2024-11-28 02:58:16,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:16,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541386593] [2024-11-28 02:58:16,583 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:58:16,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:16,594 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:58:16,594 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:17,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:17,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541386593] [2024-11-28 02:58:17,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541386593] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:17,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897269147] [2024-11-28 02:58:17,586 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:58:17,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:17,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:17,588 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:17,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 02:58:17,652 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:58:17,652 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:17,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 02:58:17,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:22,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:22,475 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:58:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:23,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897269147] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:58:23,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:58:23,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2024-11-28 02:58:23,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324607769] [2024-11-28 02:58:23,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:58:23,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 02:58:23,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:23,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 02:58:23,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=381, Unknown=1, NotChecked=0, Total=462 [2024-11-28 02:58:23,693 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:58:23,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 374 transitions, 5814 flow. Second operand has 22 states, 22 states have (on average 5.681818181818182) internal successors, (125), 22 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:23,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:23,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:58:23,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:33,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:58:34,754 INFO L124 PetriNetUnfolderBase]: 735/1370 cut-off events. [2024-11-28 02:58:34,755 INFO L125 PetriNetUnfolderBase]: For 39704/39704 co-relation queries the response was YES. [2024-11-28 02:58:34,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11847 conditions, 1370 events. 735/1370 cut-off events. For 39704/39704 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8069 event pairs, 27 based on Foata normal form. 4/1374 useless extension candidates. Maximal degree in co-relation 11706. Up to 1068 conditions per place. [2024-11-28 02:58:34,766 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 310 selfloop transitions, 108 changer transitions 12/431 dead transitions. [2024-11-28 02:58:34,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 431 transitions, 7064 flow [2024-11-28 02:58:34,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 02:58:34,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-28 02:58:34,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 235 transitions. [2024-11-28 02:58:34,767 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2024-11-28 02:58:34,767 INFO L175 Difference]: Start difference. First operand has 326 places, 374 transitions, 5814 flow. Second operand 27 states and 235 transitions. [2024-11-28 02:58:34,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 431 transitions, 7064 flow [2024-11-28 02:58:35,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 431 transitions, 6624 flow, removed 181 selfloop flow, removed 18 redundant places. [2024-11-28 02:58:35,020 INFO L231 Difference]: Finished difference. Result has 335 places, 377 transitions, 5698 flow [2024-11-28 02:58:35,020 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5369, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=5698, PETRI_PLACES=335, PETRI_TRANSITIONS=377} [2024-11-28 02:58:35,020 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 313 predicate places. [2024-11-28 02:58:35,021 INFO L471 AbstractCegarLoop]: Abstraction has has 335 places, 377 transitions, 5698 flow [2024-11-28 02:58:35,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.681818181818182) internal successors, (125), 22 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:35,021 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:35,021 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:35,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-28 02:58:35,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:35,221 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:58:35,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:35,222 INFO L85 PathProgramCache]: Analyzing trace with hash -741682883, now seen corresponding path program 21 times [2024-11-28 02:58:35,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:35,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047943860] [2024-11-28 02:58:35,222 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:58:35,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:35,232 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:58:35,232 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:35,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:35,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047943860] [2024-11-28 02:58:35,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047943860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:35,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007170968] [2024-11-28 02:58:35,982 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:58:35,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:35,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:35,984 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:35,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 02:58:36,048 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:58:36,048 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:36,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 02:58:36,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:36,500 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:58:41,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:41,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007170968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:58:41,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:58:41,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2024-11-28 02:58:41,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064591986] [2024-11-28 02:58:41,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:58:41,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:58:41,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:41,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:58:41,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=311, Unknown=1, NotChecked=0, Total=380 [2024-11-28 02:58:41,532 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:58:41,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 377 transitions, 5698 flow. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:41,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:41,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:58:41,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:46,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:58:51,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:58:56,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:59:01,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:59:05,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:59:09,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:59:10,550 INFO L124 PetriNetUnfolderBase]: 740/1373 cut-off events. [2024-11-28 02:59:10,550 INFO L125 PetriNetUnfolderBase]: For 35835/35835 co-relation queries the response was YES. [2024-11-28 02:59:10,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11685 conditions, 1373 events. 740/1373 cut-off events. For 35835/35835 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8065 event pairs, 48 based on Foata normal form. 2/1375 useless extension candidates. Maximal degree in co-relation 11541. Up to 1198 conditions per place. [2024-11-28 02:59:10,560 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 323 selfloop transitions, 92 changer transitions 9/425 dead transitions. [2024-11-28 02:59:10,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 425 transitions, 6923 flow [2024-11-28 02:59:10,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 02:59:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-28 02:59:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 223 transitions. [2024-11-28 02:59:10,561 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.412962962962963 [2024-11-28 02:59:10,561 INFO L175 Difference]: Start difference. First operand has 335 places, 377 transitions, 5698 flow. Second operand 27 states and 223 transitions. [2024-11-28 02:59:10,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 425 transitions, 6923 flow [2024-11-28 02:59:10,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 425 transitions, 6647 flow, removed 55 selfloop flow, removed 22 redundant places. [2024-11-28 02:59:10,787 INFO L231 Difference]: Finished difference. Result has 343 places, 385 transitions, 5859 flow [2024-11-28 02:59:10,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5437, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=5859, PETRI_PLACES=343, PETRI_TRANSITIONS=385} [2024-11-28 02:59:10,788 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 321 predicate places. [2024-11-28 02:59:10,788 INFO L471 AbstractCegarLoop]: Abstraction has has 343 places, 385 transitions, 5859 flow [2024-11-28 02:59:10,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:10,788 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:10,788 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:10,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 02:59:10,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-28 02:59:10,989 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:59:10,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:10,989 INFO L85 PathProgramCache]: Analyzing trace with hash -894325656, now seen corresponding path program 7 times [2024-11-28 02:59:10,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:10,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514732630] [2024-11-28 02:59:10,990 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:59:10,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:11,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:11,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:11,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514732630] [2024-11-28 02:59:11,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514732630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:11,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159145709] [2024-11-28 02:59:11,358 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:59:11,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:11,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:11,360 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:11,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 02:59:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:11,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:59:11,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:11,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:11,627 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:59:12,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:12,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159145709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:59:12,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:59:12,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2024-11-28 02:59:12,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566745315] [2024-11-28 02:59:12,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:59:12,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:59:12,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:12,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:59:12,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:59:12,002 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 02:59:12,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 385 transitions, 5859 flow. Second operand has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:12,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:12,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 02:59:12,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:13,561 INFO L124 PetriNetUnfolderBase]: 761/1420 cut-off events. [2024-11-28 02:59:13,561 INFO L125 PetriNetUnfolderBase]: For 41814/41814 co-relation queries the response was YES. [2024-11-28 02:59:13,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12471 conditions, 1420 events. 761/1420 cut-off events. For 41814/41814 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8416 event pairs, 33 based on Foata normal form. 3/1423 useless extension candidates. Maximal degree in co-relation 12325. Up to 1060 conditions per place. [2024-11-28 02:59:13,574 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 338 selfloop transitions, 82 changer transitions 10/431 dead transitions. [2024-11-28 02:59:13,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 431 transitions, 7442 flow [2024-11-28 02:59:13,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:59:13,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 02:59:13,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 138 transitions. [2024-11-28 02:59:13,576 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-11-28 02:59:13,576 INFO L175 Difference]: Start difference. First operand has 343 places, 385 transitions, 5859 flow. Second operand 15 states and 138 transitions. [2024-11-28 02:59:13,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 431 transitions, 7442 flow [2024-11-28 02:59:13,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 431 transitions, 7232 flow, removed 56 selfloop flow, removed 22 redundant places. [2024-11-28 02:59:13,891 INFO L231 Difference]: Finished difference. Result has 337 places, 389 transitions, 6135 flow [2024-11-28 02:59:13,892 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5659, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6135, PETRI_PLACES=337, PETRI_TRANSITIONS=389} [2024-11-28 02:59:13,892 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 315 predicate places. [2024-11-28 02:59:13,892 INFO L471 AbstractCegarLoop]: Abstraction has has 337 places, 389 transitions, 6135 flow [2024-11-28 02:59:13,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:13,892 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:13,892 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:13,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-28 02:59:14,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-28 02:59:14,093 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:59:14,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:14,093 INFO L85 PathProgramCache]: Analyzing trace with hash 888690899, now seen corresponding path program 5 times [2024-11-28 02:59:14,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:14,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033214045] [2024-11-28 02:59:14,093 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:59:14,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:14,103 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 02:59:14,103 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:14,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:14,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:14,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033214045] [2024-11-28 02:59:14,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033214045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:14,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430509725] [2024-11-28 02:59:14,358 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:59:14,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:14,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:14,359 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:14,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 02:59:14,412 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 02:59:14,413 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:14,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:59:14,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:22,627 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:59:35,035 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (mod c_~x_1~0 4294967296))) (let ((.cse0 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse6 (+ .cse3 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_330 Int) (v_y_330 Int)) (let ((.cse1 (+ (* 2863311531 v_z_330) (* v_y_330 4294967296))) (.cse2 (+ .cse4 v_z_330))) (or (< .cse0 .cse1) (< .cse1 0) (< v_z_330 0) (< 4294967295 .cse2) (= .cse2 .cse3)))) (forall ((v_z_330 Int) (v_y_330 Int)) (let ((.cse5 (+ (* 2863311531 v_z_330) (* v_y_330 4294967296))) (.cse7 (+ .cse4 v_z_330))) (or (< 4294967295 v_z_330) (< .cse0 .cse5) (< .cse5 0) (< v_z_330 0) (= .cse6 .cse7) (= .cse7 .cse3)))) (forall ((v_z_330 Int) (v_y_330 Int)) (let ((.cse8 (+ (* 2863311531 v_z_330) (* v_y_330 4294967296))) (.cse9 (+ .cse4 v_z_330))) (or (< 4294967295 v_z_330) (< .cse0 .cse8) (< .cse8 0) (= .cse6 .cse9) (< .cse9 4294967296))))))) is different from false [2024-11-28 03:00:07,431 WARN L286 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:00:19,727 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~x_1~0 4294967296))) (let ((.cse3 (+ .cse1 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_330 Int) (v_y_330 Int)) (let ((.cse0 (+ .cse2 v_z_330))) (or (< v_z_330 0) (not (= (+ (* 2863311531 v_z_330) (* v_y_330 4294967296)) 0)) (< 4294967295 .cse0) (= .cse0 .cse1)))) (forall ((v_z_330 Int) (v_y_330 Int)) (let ((.cse4 (+ .cse2 v_z_330))) (or (< 4294967295 v_z_330) (< v_z_330 0) (= .cse3 .cse4) (not (= (+ (* 2863311531 v_z_330) (* v_y_330 4294967296)) 0)) (= .cse4 .cse1)))) (forall ((v_z_330 Int) (v_y_330 Int)) (let ((.cse5 (+ .cse2 v_z_330))) (or (< 4294967295 v_z_330) (= .cse3 .cse5) (not (= (+ (* 2863311531 v_z_330) (* v_y_330 4294967296)) 0)) (< .cse5 4294967296))))))) is different from false [2024-11-28 03:00:44,458 WARN L286 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:00:52,490 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:01:24,599 WARN L286 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:02:01,453 WARN L286 SmtUtils]: Spent 16.03s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:02:09,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-28 03:02:09,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430509725] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:02:09,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:02:09,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-28 03:02:09,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565947830] [2024-11-28 03:02:09,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:02:09,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:02:09,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:09,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:02:09,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=129, Unknown=5, NotChecked=50, Total=240 [2024-11-28 03:02:09,481 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:02:09,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 389 transitions, 6135 flow. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:02:09,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:02:09,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:02:09,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:02:13,593 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~x_1~0 4294967296))) (let ((.cse3 (+ .cse1 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_330 Int) (v_y_330 Int)) (let ((.cse0 (+ .cse2 v_z_330))) (or (< v_z_330 0) (not (= (+ (* 2863311531 v_z_330) (* v_y_330 4294967296)) 0)) (< 4294967295 .cse0) (= .cse0 .cse1)))) (forall ((v_z_330 Int) (v_y_330 Int)) (let ((.cse4 (+ .cse2 v_z_330))) (or (< 4294967295 v_z_330) (< v_z_330 0) (= .cse3 .cse4) (not (= (+ (* 2863311531 v_z_330) (* v_y_330 4294967296)) 0)) (= .cse4 .cse1)))) (= c_~x_2~0 0) (forall ((v_z_330 Int) (v_y_330 Int)) (let ((.cse5 (+ .cse2 v_z_330))) (or (< 4294967295 v_z_330) (= .cse3 .cse5) (not (= (+ (* 2863311531 v_z_330) (* v_y_330 4294967296)) 0)) (< .cse5 4294967296)))) (= c_~x_1~0 0)))) is different from false [2024-11-28 03:02:17,724 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (mod c_~x_1~0 4294967296))) (let ((.cse0 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse6 (+ .cse3 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_330 Int) (v_y_330 Int)) (let ((.cse1 (+ (* 2863311531 v_z_330) (* v_y_330 4294967296))) (.cse2 (+ .cse4 v_z_330))) (or (< .cse0 .cse1) (< .cse1 0) (< v_z_330 0) (< 4294967295 .cse2) (= .cse2 .cse3)))) (forall ((v_z_330 Int) (v_y_330 Int)) (let ((.cse5 (+ (* 2863311531 v_z_330) (* v_y_330 4294967296))) (.cse7 (+ .cse4 v_z_330))) (or (< 4294967295 v_z_330) (< .cse0 .cse5) (< .cse5 0) (< v_z_330 0) (= .cse6 .cse7) (= .cse7 .cse3)))) (= c_~x_2~0 0) (= c_thread1Thread1of1ForFork0_~i~0 0) (= c_~x_1~0 0) (forall ((v_z_330 Int) (v_y_330 Int)) (let ((.cse8 (+ (* 2863311531 v_z_330) (* v_y_330 4294967296))) (.cse9 (+ .cse4 v_z_330))) (or (< 4294967295 v_z_330) (< .cse0 .cse8) (< .cse8 0) (= .cse6 .cse9) (< .cse9 4294967296))))))) is different from false [2024-11-28 03:02:18,946 INFO L124 PetriNetUnfolderBase]: 810/1514 cut-off events. [2024-11-28 03:02:18,946 INFO L125 PetriNetUnfolderBase]: For 53528/53528 co-relation queries the response was YES. [2024-11-28 03:02:18,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14172 conditions, 1514 events. 810/1514 cut-off events. For 53528/53528 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9034 event pairs, 161 based on Foata normal form. 2/1516 useless extension candidates. Maximal degree in co-relation 14024. Up to 1412 conditions per place. [2024-11-28 03:02:18,957 INFO L140 encePairwiseOnDemand]: 10/20 looper letters, 410 selfloop transitions, 24 changer transitions 4/439 dead transitions. [2024-11-28 03:02:18,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 439 transitions, 8025 flow [2024-11-28 03:02:18,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:02:18,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 03:02:18,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-11-28 03:02:18,958 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2024-11-28 03:02:18,958 INFO L175 Difference]: Start difference. First operand has 337 places, 389 transitions, 6135 flow. Second operand 11 states and 106 transitions. [2024-11-28 03:02:18,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 439 transitions, 8025 flow [2024-11-28 03:02:19,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 439 transitions, 7836 flow, removed 68 selfloop flow, removed 10 redundant places. [2024-11-28 03:02:19,230 INFO L231 Difference]: Finished difference. Result has 345 places, 412 transitions, 6650 flow [2024-11-28 03:02:19,230 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5976, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6650, PETRI_PLACES=345, PETRI_TRANSITIONS=412} [2024-11-28 03:02:19,230 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 323 predicate places. [2024-11-28 03:02:19,230 INFO L471 AbstractCegarLoop]: Abstraction has has 345 places, 412 transitions, 6650 flow [2024-11-28 03:02:19,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:02:19,231 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:02:19,231 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:19,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-28 03:02:19,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-28 03:02:19,431 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:02:19,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:19,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2035388659, now seen corresponding path program 22 times [2024-11-28 03:02:19,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:19,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246699000] [2024-11-28 03:02:19,432 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:02:19,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:19,443 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:02:19,443 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:02:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:02:20,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:20,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246699000] [2024-11-28 03:02:20,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246699000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:20,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529125937] [2024-11-28 03:02:20,483 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:02:20,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:20,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:20,485 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:20,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 03:02:20,543 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:02:20,544 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:02:20,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 03:02:20,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:02:21,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:02:21,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:03:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:03:35,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529125937] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:03:35,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:03:35,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2024-11-28 03:03:35,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388222366] [2024-11-28 03:03:35,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:03:35,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 03:03:35,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:35,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 03:03:35,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=315, Unknown=18, NotChecked=0, Total=420 [2024-11-28 03:03:35,098 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:03:35,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 412 transitions, 6650 flow. Second operand has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:03:35,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:03:35,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:03:35,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:04:10,451 INFO L124 PetriNetUnfolderBase]: 876/1644 cut-off events. [2024-11-28 03:04:10,451 INFO L125 PetriNetUnfolderBase]: For 55960/55960 co-relation queries the response was YES. [2024-11-28 03:04:10,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15937 conditions, 1644 events. 876/1644 cut-off events. For 55960/55960 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 10089 event pairs, 59 based on Foata normal form. 3/1647 useless extension candidates. Maximal degree in co-relation 15781. Up to 1353 conditions per place. [2024-11-28 03:04:10,465 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 368 selfloop transitions, 97 changer transitions 10/476 dead transitions. [2024-11-28 03:04:10,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 476 transitions, 8917 flow [2024-11-28 03:04:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 03:04:10,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 03:04:10,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 184 transitions. [2024-11-28 03:04:10,466 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-11-28 03:04:10,466 INFO L175 Difference]: Start difference. First operand has 345 places, 412 transitions, 6650 flow. Second operand 22 states and 184 transitions. [2024-11-28 03:04:10,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 476 transitions, 8917 flow [2024-11-28 03:04:10,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 476 transitions, 8758 flow, removed 77 selfloop flow, removed 1 redundant places. [2024-11-28 03:04:10,794 INFO L231 Difference]: Finished difference. Result has 373 places, 438 transitions, 7642 flow [2024-11-28 03:04:10,794 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=6499, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7642, PETRI_PLACES=373, PETRI_TRANSITIONS=438} [2024-11-28 03:04:10,794 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 351 predicate places. [2024-11-28 03:04:10,795 INFO L471 AbstractCegarLoop]: Abstraction has has 373 places, 438 transitions, 7642 flow [2024-11-28 03:04:10,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:04:10,795 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:04:10,795 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:10,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-28 03:04:10,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-28 03:04:10,995 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:04:10,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:10,996 INFO L85 PathProgramCache]: Analyzing trace with hash -123421050, now seen corresponding path program 23 times [2024-11-28 03:04:10,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:10,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612162585] [2024-11-28 03:04:10,996 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:04:10,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:11,009 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 03:04:11,009 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:04:11,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:04:11,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:11,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612162585] [2024-11-28 03:04:11,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612162585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:11,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795898712] [2024-11-28 03:04:11,846 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:04:11,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:11,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:11,847 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:11,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 03:04:11,904 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 03:04:11,904 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:04:11,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 03:04:11,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:04:19,165 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:04:24,011 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (mod (+ c_thread2Thread1of1ForFork1_~i~1 1) 4294967296)) (.cse3 (mod c_~x_1~0 4294967296))) (let ((.cse0 (+ (mod c_thread1Thread1of1ForFork0_~i~0 4294967296) 1)) (.cse1 (mod (+ c_thread1Thread1of1ForFork0_~i~0 1) 4294967296)) (.cse2 (+ .cse3 (mod (+ 2 c_thread2Thread1of1ForFork1_~i~1) 4294967296))) (.cse5 (+ .cse3 .cse4))) (and (forall ((v_z_356 Int)) (or (< v_z_356 .cse0) (< .cse1 v_z_356) (< .cse2 (+ (mod (+ c_~x_2~0 (* 2 v_z_356)) 4294967296) 4294967297)))) (forall ((v_z_356 Int)) (or (< v_z_356 .cse0) (< .cse1 v_z_356) (< (mod (+ c_~x_2~0 (* 2 v_z_356)) 4294967296) (+ .cse3 .cse4 2)))) (or (forall ((v_z_356 Int)) (or (< v_z_356 .cse0) (< .cse1 v_z_356) (< (+ (mod (+ c_~x_2~0 (* 2 v_z_356)) 4294967296) 4294967294) .cse5))) (< .cse2 4294967296)) (or (forall ((v_z_356 Int)) (or (< v_z_356 .cse0) (< .cse1 v_z_356) (< .cse2 (+ (mod (+ c_~x_2~0 (* 2 v_z_356)) 4294967296) 1)))) (< 4294967294 .cse5))))) is different from false [2024-11-28 03:04:28,137 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (mod c_thread1Thread1of1ForFork0_~i~0 4294967296) 1)) (.cse1 (mod (+ c_thread1Thread1of1ForFork0_~i~0 1) 4294967296)) (.cse2 (mod c_~x_1~0 4294967296))) (and (forall ((v_z_356 Int)) (or (< v_z_356 .cse0) (< .cse1 v_z_356) (< .cse2 (+ (mod (+ c_~x_2~0 (* 2 v_z_356)) 4294967296) 4294967295)))) (or (< 4294967293 .cse2) (forall ((v_z_356 Int)) (or (< v_z_356 .cse0) (< .cse1 v_z_356) (< (+ .cse2 1) (mod (+ c_~x_2~0 (* 2 v_z_356)) 4294967296))))) (forall ((v_z_356 Int)) (or (< v_z_356 .cse0) (< .cse1 v_z_356) (< (mod (+ c_~x_2~0 (* 2 v_z_356)) 4294967296) (+ .cse2 3)))) (or (< .cse2 4294967294) (forall ((v_z_356 Int)) (or (< v_z_356 .cse0) (< .cse1 v_z_356) (< (+ (mod (+ c_~x_2~0 (* 2 v_z_356)) 4294967296) 4294967293) .cse2)))))) is different from false [2024-11-28 03:04:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-28 03:04:28,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795898712] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:04:28,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:04:28,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2024-11-28 03:04:28,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528231675] [2024-11-28 03:04:28,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:04:28,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 03:04:28,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:28,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 03:04:28,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=263, Unknown=2, NotChecked=70, Total=420 [2024-11-28 03:04:28,325 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:04:28,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 438 transitions, 7642 flow. Second operand has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:04:28,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:04:28,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:04:28,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:04:32,913 INFO L124 PetriNetUnfolderBase]: 911/1718 cut-off events. [2024-11-28 03:04:32,913 INFO L125 PetriNetUnfolderBase]: For 68728/68728 co-relation queries the response was YES. [2024-11-28 03:04:32,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17460 conditions, 1718 events. 911/1718 cut-off events. For 68728/68728 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 10669 event pairs, 55 based on Foata normal form. 2/1720 useless extension candidates. Maximal degree in co-relation 17296. Up to 1440 conditions per place. [2024-11-28 03:04:32,931 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 393 selfloop transitions, 96 changer transitions 9/499 dead transitions. [2024-11-28 03:04:32,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 499 transitions, 9791 flow [2024-11-28 03:04:32,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:04:32,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-28 03:04:32,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 186 transitions. [2024-11-28 03:04:32,932 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-11-28 03:04:32,932 INFO L175 Difference]: Start difference. First operand has 373 places, 438 transitions, 7642 flow. Second operand 21 states and 186 transitions. [2024-11-28 03:04:32,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 499 transitions, 9791 flow [2024-11-28 03:04:33,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 499 transitions, 9278 flow, removed 208 selfloop flow, removed 12 redundant places. [2024-11-28 03:04:33,372 INFO L231 Difference]: Finished difference. Result has 385 places, 458 transitions, 8122 flow [2024-11-28 03:04:33,373 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7219, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8122, PETRI_PLACES=385, PETRI_TRANSITIONS=458} [2024-11-28 03:04:33,373 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 363 predicate places. [2024-11-28 03:04:33,373 INFO L471 AbstractCegarLoop]: Abstraction has has 385 places, 458 transitions, 8122 flow [2024-11-28 03:04:33,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:04:33,374 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:04:33,374 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:33,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-28 03:04:33,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 03:04:33,574 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:04:33,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:33,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1845638760, now seen corresponding path program 24 times [2024-11-28 03:04:33,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:33,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638928768] [2024-11-28 03:04:33,575 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:04:33,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:33,583 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 03:04:33,583 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:04:36,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:04:36,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:36,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638928768] [2024-11-28 03:04:36,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638928768] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:36,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827839861] [2024-11-28 03:04:36,479 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:04:36,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:36,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:36,481 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:36,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 03:04:36,589 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 03:04:36,589 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:04:36,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 03:04:36,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:36,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:04:36,942 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:04:41,963 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (mod (+ c_thread2Thread1of1ForFork1_~i~1 1) 4294967296)) (.cse3 (mod c_~x_1~0 4294967296))) (let ((.cse0 (+ .cse3 (mod (+ 2 c_thread2Thread1of1ForFork1_~i~1) 4294967296))) (.cse1 (mod (+ c_thread1Thread1of1ForFork0_~i~0 1) 4294967296)) (.cse2 (+ (mod c_thread1Thread1of1ForFork0_~i~0 4294967296) 1)) (.cse5 (+ .cse3 .cse4))) (and (forall ((v_z_362 Int)) (or (< .cse0 (+ 4294967297 (mod (+ c_~x_2~0 (* 2 v_z_362)) 4294967296))) (< .cse1 v_z_362) (< v_z_362 .cse2))) (forall ((v_z_362 Int)) (or (< (mod (+ c_~x_2~0 (* 2 v_z_362)) 4294967296) (+ .cse3 .cse4 2)) (< .cse1 v_z_362) (< v_z_362 .cse2))) (or (< .cse0 4294967296) (forall ((v_z_362 Int)) (or (< (+ 4294967294 (mod (+ c_~x_2~0 (* 2 v_z_362)) 4294967296)) .cse5) (< .cse1 v_z_362) (< v_z_362 .cse2)))) (or (forall ((v_z_362 Int)) (or (< .cse0 (+ (mod (+ c_~x_2~0 (* 2 v_z_362)) 4294967296) 1)) (< .cse1 v_z_362) (< v_z_362 .cse2))) (< 4294967294 .cse5))))) is different from false [2024-11-28 03:04:46,119 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~x_1~0 4294967296)) (.cse1 (mod (+ c_thread1Thread1of1ForFork0_~i~0 1) 4294967296)) (.cse2 (+ (mod c_thread1Thread1of1ForFork0_~i~0 4294967296) 1))) (and (forall ((v_z_362 Int)) (or (< (mod (+ c_~x_2~0 (* 2 v_z_362)) 4294967296) (+ .cse0 3)) (< .cse1 v_z_362) (< v_z_362 .cse2))) (forall ((v_z_362 Int)) (or (< .cse1 v_z_362) (< .cse0 (+ 4294967295 (mod (+ c_~x_2~0 (* 2 v_z_362)) 4294967296))) (< v_z_362 .cse2))) (or (< 4294967293 .cse0) (forall ((v_z_362 Int)) (or (< (+ .cse0 1) (mod (+ c_~x_2~0 (* 2 v_z_362)) 4294967296)) (< .cse1 v_z_362) (< v_z_362 .cse2)))) (or (< .cse0 4294967294) (forall ((v_z_362 Int)) (or (< (+ (mod (+ c_~x_2~0 (* 2 v_z_362)) 4294967296) 4294967293) .cse0) (< .cse1 v_z_362) (< v_z_362 .cse2)))))) is different from false [2024-11-28 03:04:46,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-28 03:04:46,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827839861] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:04:46,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:04:46,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2024-11-28 03:04:46,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088491518] [2024-11-28 03:04:46,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:04:46,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:04:46,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:46,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:04:46,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=246, Unknown=2, NotChecked=66, Total=380 [2024-11-28 03:04:46,318 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:04:46,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 458 transitions, 8122 flow. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:04:46,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:04:46,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:04:46,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:04:48,421 INFO L124 PetriNetUnfolderBase]: 914/1730 cut-off events. [2024-11-28 03:04:48,422 INFO L125 PetriNetUnfolderBase]: For 70761/70761 co-relation queries the response was YES. [2024-11-28 03:04:48,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17522 conditions, 1730 events. 914/1730 cut-off events. For 70761/70761 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10778 event pairs, 59 based on Foata normal form. 3/1733 useless extension candidates. Maximal degree in co-relation 17354. Up to 1565 conditions per place. [2024-11-28 03:04:48,436 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 417 selfloop transitions, 64 changer transitions 8/490 dead transitions. [2024-11-28 03:04:48,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 490 transitions, 9512 flow [2024-11-28 03:04:48,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:04:48,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 03:04:48,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 145 transitions. [2024-11-28 03:04:48,437 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4264705882352941 [2024-11-28 03:04:48,437 INFO L175 Difference]: Start difference. First operand has 385 places, 458 transitions, 8122 flow. Second operand 17 states and 145 transitions. [2024-11-28 03:04:48,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 490 transitions, 9512 flow [2024-11-28 03:04:48,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 490 transitions, 8981 flow, removed 224 selfloop flow, removed 13 redundant places. [2024-11-28 03:04:48,856 INFO L231 Difference]: Finished difference. Result has 391 places, 462 transitions, 7925 flow [2024-11-28 03:04:48,856 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7613, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7925, PETRI_PLACES=391, PETRI_TRANSITIONS=462} [2024-11-28 03:04:48,856 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 369 predicate places. [2024-11-28 03:04:48,857 INFO L471 AbstractCegarLoop]: Abstraction has has 391 places, 462 transitions, 7925 flow [2024-11-28 03:04:48,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:04:48,857 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:04:48,857 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:48,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-28 03:04:49,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 03:04:49,057 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:04:49,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:49,058 INFO L85 PathProgramCache]: Analyzing trace with hash 396095137, now seen corresponding path program 6 times [2024-11-28 03:04:49,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:49,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152088519] [2024-11-28 03:04:49,058 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:04:49,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:49,065 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 03:04:49,065 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:04:49,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:04:49,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:49,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152088519] [2024-11-28 03:04:49,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152088519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:49,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568790915] [2024-11-28 03:04:49,354 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:04:49,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:49,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:49,356 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:49,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 03:04:49,409 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 03:04:49,409 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:04:49,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 03:04:49,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:04:57,821 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:05:23,001 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (mod c_~x_1~0 4294967296))) (let ((.cse4 (+ .cse2 4294967296)) (.cse1 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse5 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_369 Int) (v_y_369 Int)) (let ((.cse0 (+ (* v_y_369 4294967296) (* 2863311531 v_z_369))) (.cse3 (+ .cse5 v_z_369))) (or (< .cse0 0) (< .cse1 .cse0) (= .cse2 .cse3) (< v_z_369 0) (< 4294967295 v_z_369) (= .cse4 .cse3)))) (forall ((v_z_369 Int) (v_y_369 Int)) (let ((.cse6 (+ (* v_y_369 4294967296) (* 2863311531 v_z_369))) (.cse7 (+ .cse5 v_z_369))) (or (< .cse6 0) (< .cse1 .cse6) (< .cse7 4294967296) (< 4294967295 v_z_369) (= .cse4 .cse7)))) (forall ((v_z_369 Int) (v_y_369 Int)) (let ((.cse8 (+ (* v_y_369 4294967296) (* 2863311531 v_z_369))) (.cse9 (+ .cse5 v_z_369))) (or (< .cse8 0) (< .cse1 .cse8) (= .cse2 .cse9) (< v_z_369 0) (< 4294967295 .cse9))))))) is different from false [2024-11-28 03:05:47,382 WARN L286 SmtUtils]: Spent 16.03s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:06:03,498 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (mod c_~x_1~0 4294967296))) (let ((.cse1 (+ .cse3 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_369 Int) (v_y_369 Int)) (let ((.cse0 (+ .cse2 v_z_369))) (or (< .cse0 4294967296) (not (= (+ (* v_y_369 4294967296) (* 2863311531 v_z_369)) 0)) (< 4294967295 v_z_369) (= .cse1 .cse0)))) (forall ((v_z_369 Int) (v_y_369 Int)) (let ((.cse4 (+ .cse2 v_z_369))) (or (= .cse3 .cse4) (not (= (+ (* v_y_369 4294967296) (* 2863311531 v_z_369)) 0)) (< v_z_369 0) (< 4294967295 .cse4)))) (forall ((v_z_369 Int) (v_y_369 Int)) (let ((.cse5 (+ .cse2 v_z_369))) (or (= .cse3 .cse5) (not (= (+ (* v_y_369 4294967296) (* 2863311531 v_z_369)) 0)) (< v_z_369 0) (< 4294967295 v_z_369) (= .cse1 .cse5))))))) is different from false [2024-11-28 03:06:27,731 WARN L286 SmtUtils]: Spent 16.03s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:07:03,859 WARN L286 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:07:19,889 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:07:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:07:25,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568790915] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:07:25,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:07:25,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 21 [2024-11-28 03:07:25,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331332674] [2024-11-28 03:07:25,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:07:25,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 03:07:25,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:25,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 03:07:25,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=8, NotChecked=74, Total=462 [2024-11-28 03:07:25,033 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:07:25,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 462 transitions, 7925 flow. Second operand has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 22 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:07:25,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:07:25,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:07:25,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:07:29,203 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (mod c_~x_1~0 4294967296))) (let ((.cse1 (+ .cse3 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_369 Int) (v_y_369 Int)) (let ((.cse0 (+ .cse2 v_z_369))) (or (< .cse0 4294967296) (not (= (+ (* v_y_369 4294967296) (* 2863311531 v_z_369)) 0)) (< 4294967295 v_z_369) (= .cse1 .cse0)))) (= c_~x_2~0 0) (forall ((v_z_369 Int) (v_y_369 Int)) (let ((.cse4 (+ .cse2 v_z_369))) (or (= .cse3 .cse4) (not (= (+ (* v_y_369 4294967296) (* 2863311531 v_z_369)) 0)) (< v_z_369 0) (< 4294967295 .cse4)))) (forall ((v_z_369 Int) (v_y_369 Int)) (let ((.cse5 (+ .cse2 v_z_369))) (or (= .cse3 .cse5) (not (= (+ (* v_y_369 4294967296) (* 2863311531 v_z_369)) 0)) (< v_z_369 0) (< 4294967295 v_z_369) (= .cse1 .cse5)))) (= c_~x_1~0 0)))) is different from false [2024-11-28 03:07:33,239 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (mod c_~x_1~0 4294967296))) (let ((.cse4 (+ .cse2 4294967296)) (.cse1 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse5 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_369 Int) (v_y_369 Int)) (let ((.cse0 (+ (* v_y_369 4294967296) (* 2863311531 v_z_369))) (.cse3 (+ .cse5 v_z_369))) (or (< .cse0 0) (< .cse1 .cse0) (= .cse2 .cse3) (< v_z_369 0) (< 4294967295 v_z_369) (= .cse4 .cse3)))) (forall ((v_z_369 Int) (v_y_369 Int)) (let ((.cse6 (+ (* v_y_369 4294967296) (* 2863311531 v_z_369))) (.cse7 (+ .cse5 v_z_369))) (or (< .cse6 0) (< .cse1 .cse6) (< .cse7 4294967296) (< 4294967295 v_z_369) (= .cse4 .cse7)))) (= c_~x_2~0 0) (forall ((v_z_369 Int) (v_y_369 Int)) (let ((.cse8 (+ (* v_y_369 4294967296) (* 2863311531 v_z_369))) (.cse9 (+ .cse5 v_z_369))) (or (< .cse8 0) (< .cse1 .cse8) (= .cse2 .cse9) (< v_z_369 0) (< 4294967295 .cse9)))) (= c_thread1Thread1of1ForFork0_~i~0 0) (= c_~x_1~0 0)))) is different from false [2024-11-28 03:07:37,428 WARN L851 $PredicateComparison]: unable to prove that (and (= c_~x_2~0 0) (= c_thread1Thread1of1ForFork0_~i~0 0) (= c_thread2Thread1of1ForFork1_~i~1 0) (= c_~x_1~0 0) (or (let ((.cse2 (mod c_~x_1~0 4294967296))) (let ((.cse4 (+ .cse2 4294967296)) (.cse1 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse5 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_369 Int) (v_y_369 Int)) (let ((.cse0 (+ (* v_y_369 4294967296) (* 2863311531 v_z_369))) (.cse3 (+ .cse5 v_z_369))) (or (< .cse0 0) (< .cse1 .cse0) (= .cse2 .cse3) (< v_z_369 0) (< 4294967295 v_z_369) (= .cse4 .cse3)))) (forall ((v_z_369 Int) (v_y_369 Int)) (let ((.cse6 (+ (* v_y_369 4294967296) (* 2863311531 v_z_369))) (.cse7 (+ .cse5 v_z_369))) (or (< .cse6 0) (< .cse1 .cse6) (< .cse7 4294967296) (< 4294967295 v_z_369) (= .cse4 .cse7)))) (forall ((v_z_369 Int) (v_y_369 Int)) (let ((.cse8 (+ (* v_y_369 4294967296) (* 2863311531 v_z_369))) (.cse9 (+ .cse5 v_z_369))) (or (< .cse8 0) (< .cse1 .cse8) (= .cse2 .cse9) (< v_z_369 0) (< 4294967295 .cse9))))))) (< (mod (+ c_thread2Thread1of1ForFork1_~i~1 3) 4294967296) (+ (mod c_thread2Thread1of1ForFork1_~i~1 4294967296) 1)))) is different from false [2024-11-28 03:07:42,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:07:44,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:07:45,053 INFO L124 PetriNetUnfolderBase]: 1008/1891 cut-off events. [2024-11-28 03:07:45,053 INFO L125 PetriNetUnfolderBase]: For 86205/86205 co-relation queries the response was YES. [2024-11-28 03:07:45,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19902 conditions, 1891 events. 1008/1891 cut-off events. For 86205/86205 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 11818 event pairs, 190 based on Foata normal form. 2/1893 useless extension candidates. Maximal degree in co-relation 19732. Up to 1735 conditions per place. [2024-11-28 03:07:45,069 INFO L140 encePairwiseOnDemand]: 9/20 looper letters, 487 selfloop transitions, 56 changer transitions 6/550 dead transitions. [2024-11-28 03:07:45,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 550 transitions, 11257 flow [2024-11-28 03:07:45,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 03:07:45,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 03:07:45,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 174 transitions. [2024-11-28 03:07:45,070 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.435 [2024-11-28 03:07:45,070 INFO L175 Difference]: Start difference. First operand has 391 places, 462 transitions, 7925 flow. Second operand 20 states and 174 transitions. [2024-11-28 03:07:45,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 550 transitions, 11257 flow [2024-11-28 03:07:45,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 550 transitions, 11035 flow, removed 63 selfloop flow, removed 13 redundant places. [2024-11-28 03:07:45,566 INFO L231 Difference]: Finished difference. Result has 409 places, 517 transitions, 9844 flow [2024-11-28 03:07:45,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7757, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=9844, PETRI_PLACES=409, PETRI_TRANSITIONS=517} [2024-11-28 03:07:45,567 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 387 predicate places. [2024-11-28 03:07:45,567 INFO L471 AbstractCegarLoop]: Abstraction has has 409 places, 517 transitions, 9844 flow [2024-11-28 03:07:45,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 22 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:07:45,568 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:07:45,568 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:07:45,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-28 03:07:45,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-28 03:07:45,772 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:07:45,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:07:45,772 INFO L85 PathProgramCache]: Analyzing trace with hash -974917609, now seen corresponding path program 7 times [2024-11-28 03:07:45,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:07:45,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141825240] [2024-11-28 03:07:45,772 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:07:45,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:46,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:07:46,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:46,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141825240] [2024-11-28 03:07:46,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141825240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:46,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351929691] [2024-11-28 03:07:46,064 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:07:46,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:46,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:07:46,066 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:07:46,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-28 03:07:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:46,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 03:07:46,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:07:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:07:54,334 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:08:06,766 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse7 (mod c_~x_1~0 4294967296))) (let ((.cse3 (+ .cse7 4294967296)) (.cse2 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_377 Int) (v_y_377 Int)) (let ((.cse0 (+ (* v_y_377 4294967296) (* 2863311531 v_z_377))) (.cse1 (+ .cse4 v_z_377))) (or (< .cse0 0) (< .cse1 4294967296) (< .cse2 .cse0) (= .cse3 .cse1) (< 4294967295 v_z_377)))) (forall ((v_z_377 Int) (v_y_377 Int)) (let ((.cse5 (+ (* v_y_377 4294967296) (* 2863311531 v_z_377))) (.cse6 (+ .cse4 v_z_377))) (or (< .cse5 0) (< v_z_377 0) (< .cse2 .cse5) (= .cse3 .cse6) (< 4294967295 v_z_377) (= .cse7 .cse6)))) (forall ((v_z_377 Int) (v_y_377 Int)) (let ((.cse9 (+ (* v_y_377 4294967296) (* 2863311531 v_z_377))) (.cse8 (+ .cse4 v_z_377))) (or (< 4294967295 .cse8) (< .cse9 0) (< v_z_377 0) (< .cse2 .cse9) (= .cse7 .cse8))))))) is different from false [2024-11-28 03:08:23,247 WARN L286 SmtUtils]: Spent 16.03s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:08:49,049 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (mod c_~x_1~0 4294967296))) (let ((.cse1 (+ .cse4 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_377 Int) (v_y_377 Int)) (let ((.cse0 (+ .cse2 v_z_377))) (or (< .cse0 4294967296) (= .cse1 .cse0) (< 4294967295 v_z_377) (not (= (+ (* v_y_377 4294967296) (* 2863311531 v_z_377)) 0))))) (forall ((v_z_377 Int) (v_y_377 Int)) (let ((.cse3 (+ .cse2 v_z_377))) (or (< 4294967295 .cse3) (< v_z_377 0) (not (= (+ (* v_y_377 4294967296) (* 2863311531 v_z_377)) 0)) (= .cse4 .cse3)))) (forall ((v_z_377 Int) (v_y_377 Int)) (let ((.cse5 (+ .cse2 v_z_377))) (or (< v_z_377 0) (= .cse1 .cse5) (< 4294967295 v_z_377) (not (= (+ (* v_y_377 4294967296) (* 2863311531 v_z_377)) 0)) (= .cse4 .cse5))))))) is different from false [2024-11-28 03:09:05,096 WARN L286 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:09:23,259 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-28 03:09:23,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351929691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:09:23,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:09:23,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-28 03:09:23,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44061997] [2024-11-28 03:09:23,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:09:23,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:09:23,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:09:23,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:09:23,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=129, Unknown=5, NotChecked=50, Total=240 [2024-11-28 03:09:23,261 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:09:23,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 517 transitions, 9844 flow. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:09:23,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:09:23,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:09:23,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:09:27,419 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (mod c_~x_1~0 4294967296))) (let ((.cse1 (+ .cse4 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_377 Int) (v_y_377 Int)) (let ((.cse0 (+ .cse2 v_z_377))) (or (< .cse0 4294967296) (= .cse1 .cse0) (< 4294967295 v_z_377) (not (= (+ (* v_y_377 4294967296) (* 2863311531 v_z_377)) 0))))) (= c_~x_2~0 0) (= c_~x_1~0 0) (forall ((v_z_377 Int) (v_y_377 Int)) (let ((.cse3 (+ .cse2 v_z_377))) (or (< 4294967295 .cse3) (< v_z_377 0) (not (= (+ (* v_y_377 4294967296) (* 2863311531 v_z_377)) 0)) (= .cse4 .cse3)))) (forall ((v_z_377 Int) (v_y_377 Int)) (let ((.cse5 (+ .cse2 v_z_377))) (or (< v_z_377 0) (= .cse1 .cse5) (< 4294967295 v_z_377) (not (= (+ (* v_y_377 4294967296) (* 2863311531 v_z_377)) 0)) (= .cse4 .cse5))))))) is different from false [2024-11-28 03:09:31,445 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse7 (mod c_~x_1~0 4294967296))) (let ((.cse3 (+ .cse7 4294967296)) (.cse2 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (= c_~x_2~0 0) (forall ((v_z_377 Int) (v_y_377 Int)) (let ((.cse0 (+ (* v_y_377 4294967296) (* 2863311531 v_z_377))) (.cse1 (+ .cse4 v_z_377))) (or (< .cse0 0) (< .cse1 4294967296) (< .cse2 .cse0) (= .cse3 .cse1) (< 4294967295 v_z_377)))) (= c_thread1Thread1of1ForFork0_~i~0 0) (forall ((v_z_377 Int) (v_y_377 Int)) (let ((.cse5 (+ (* v_y_377 4294967296) (* 2863311531 v_z_377))) (.cse6 (+ .cse4 v_z_377))) (or (< .cse5 0) (< v_z_377 0) (< .cse2 .cse5) (= .cse3 .cse6) (< 4294967295 v_z_377) (= .cse7 .cse6)))) (forall ((v_z_377 Int) (v_y_377 Int)) (let ((.cse9 (+ (* v_y_377 4294967296) (* 2863311531 v_z_377))) (.cse8 (+ .cse4 v_z_377))) (or (< 4294967295 .cse8) (< .cse9 0) (< v_z_377 0) (< .cse2 .cse9) (= .cse7 .cse8)))) (= c_~x_1~0 0)))) is different from false [2024-11-28 03:09:33,052 INFO L124 PetriNetUnfolderBase]: 1041/1960 cut-off events. [2024-11-28 03:09:33,053 INFO L125 PetriNetUnfolderBase]: For 94478/94478 co-relation queries the response was YES. [2024-11-28 03:09:33,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21603 conditions, 1960 events. 1041/1960 cut-off events. For 94478/94478 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 12422 event pairs, 114 based on Foata normal form. 2/1962 useless extension candidates. Maximal degree in co-relation 21391. Up to 1857 conditions per place. [2024-11-28 03:09:33,071 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 534 selfloop transitions, 23 changer transitions 3/561 dead transitions. [2024-11-28 03:09:33,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 561 transitions, 12080 flow [2024-11-28 03:09:33,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:09:33,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 03:09:33,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-11-28 03:09:33,072 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2024-11-28 03:09:33,072 INFO L175 Difference]: Start difference. First operand has 409 places, 517 transitions, 9844 flow. Second operand 11 states and 102 transitions. [2024-11-28 03:09:33,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 561 transitions, 12080 flow [2024-11-28 03:09:33,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 561 transitions, 11178 flow, removed 451 selfloop flow, removed 1 redundant places. [2024-11-28 03:09:33,779 INFO L231 Difference]: Finished difference. Result has 426 places, 538 transitions, 9740 flow [2024-11-28 03:09:33,780 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=8944, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9740, PETRI_PLACES=426, PETRI_TRANSITIONS=538} [2024-11-28 03:09:33,780 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 404 predicate places. [2024-11-28 03:09:33,780 INFO L471 AbstractCegarLoop]: Abstraction has has 426 places, 538 transitions, 9740 flow [2024-11-28 03:09:33,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:09:33,780 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:09:33,780 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:09:33,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-28 03:09:33,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-28 03:09:33,985 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:09:33,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:09:33,985 INFO L85 PathProgramCache]: Analyzing trace with hash -341361096, now seen corresponding path program 25 times [2024-11-28 03:09:33,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:09:33,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578366480] [2024-11-28 03:09:33,985 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:09:33,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:09:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:34,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:09:34,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:09:34,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578366480] [2024-11-28 03:09:34,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578366480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:09:34,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015320834] [2024-11-28 03:09:34,899 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:09:34,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:09:34,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:09:34,901 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:09:34,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-28 03:09:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:34,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 03:09:34,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:09:35,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:09:35,369 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:09:36,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:09:36,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015320834] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:09:36,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:09:36,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2024-11-28 03:09:36,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100703884] [2024-11-28 03:09:36,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:09:36,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:09:36,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:09:36,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:09:36,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:09:36,639 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:09:36,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 538 transitions, 9740 flow. Second operand has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:09:36,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:09:36,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:09:36,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:09:42,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:09:47,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:09:51,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:09:55,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:10:00,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:10:04,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:10:04,926 INFO L124 PetriNetUnfolderBase]: 1065/2003 cut-off events. [2024-11-28 03:10:04,926 INFO L125 PetriNetUnfolderBase]: For 86676/86676 co-relation queries the response was YES. [2024-11-28 03:10:04,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20965 conditions, 2003 events. 1065/2003 cut-off events. For 86676/86676 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 12710 event pairs, 172 based on Foata normal form. 3/2006 useless extension candidates. Maximal degree in co-relation 20774. Up to 1766 conditions per place. [2024-11-28 03:10:04,945 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 451 selfloop transitions, 129 changer transitions 8/589 dead transitions. [2024-11-28 03:10:04,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 589 transitions, 11491 flow [2024-11-28 03:10:04,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 03:10:04,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-28 03:10:04,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 229 transitions. [2024-11-28 03:10:04,946 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42407407407407405 [2024-11-28 03:10:04,946 INFO L175 Difference]: Start difference. First operand has 426 places, 538 transitions, 9740 flow. Second operand 27 states and 229 transitions. [2024-11-28 03:10:04,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 589 transitions, 11491 flow [2024-11-28 03:10:05,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 589 transitions, 11313 flow, removed 83 selfloop flow, removed 1 redundant places. [2024-11-28 03:10:05,652 INFO L231 Difference]: Finished difference. Result has 457 places, 548 transitions, 10100 flow [2024-11-28 03:10:05,653 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=9562, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=10100, PETRI_PLACES=457, PETRI_TRANSITIONS=548} [2024-11-28 03:10:05,653 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 435 predicate places. [2024-11-28 03:10:05,653 INFO L471 AbstractCegarLoop]: Abstraction has has 457 places, 548 transitions, 10100 flow [2024-11-28 03:10:05,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:10:05,654 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:10:05,654 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:10:05,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-28 03:10:05,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:10:05,854 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:10:05,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:10:05,855 INFO L85 PathProgramCache]: Analyzing trace with hash -2072701163, now seen corresponding path program 8 times [2024-11-28 03:10:05,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:10:05,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238948702] [2024-11-28 03:10:05,855 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:10:05,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:10:05,865 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:10:05,865 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:10:06,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:10:06,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:10:06,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238948702] [2024-11-28 03:10:06,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238948702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:10:06,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027686585] [2024-11-28 03:10:06,177 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:10:06,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:10:06,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:10:06,179 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:10:06,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-28 03:10:06,251 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:10:06,251 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:10:06,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:10:06,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:10:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:10:14,630 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:10:27,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:10:27,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027686585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:10:27,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:10:27,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2024-11-28 03:10:27,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12817318] [2024-11-28 03:10:27,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:10:27,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:10:27,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:10:27,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:10:27,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=147, Unknown=4, NotChecked=0, Total=210 [2024-11-28 03:10:27,052 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:10:27,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 548 transitions, 10100 flow. Second operand has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:10:27,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:10:27,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:10:27,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:10:28,841 INFO L124 PetriNetUnfolderBase]: 1097/2062 cut-off events. [2024-11-28 03:10:28,841 INFO L125 PetriNetUnfolderBase]: For 103165/103165 co-relation queries the response was YES. [2024-11-28 03:10:28,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22435 conditions, 2062 events. 1097/2062 cut-off events. For 103165/103165 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 13226 event pairs, 165 based on Foata normal form. 4/2066 useless extension candidates. Maximal degree in co-relation 22238. Up to 1539 conditions per place. [2024-11-28 03:10:28,866 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 455 selfloop transitions, 126 changer transitions 7/589 dead transitions. [2024-11-28 03:10:28,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 589 transitions, 12398 flow [2024-11-28 03:10:28,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:10:28,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 03:10:28,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 135 transitions. [2024-11-28 03:10:28,868 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-28 03:10:28,868 INFO L175 Difference]: Start difference. First operand has 457 places, 548 transitions, 10100 flow. Second operand 15 states and 135 transitions. [2024-11-28 03:10:28,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 589 transitions, 12398 flow [2024-11-28 03:10:29,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 589 transitions, 11917 flow, removed 136 selfloop flow, removed 23 redundant places. [2024-11-28 03:10:29,706 INFO L231 Difference]: Finished difference. Result has 450 places, 558 transitions, 10515 flow [2024-11-28 03:10:29,706 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=9673, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=10515, PETRI_PLACES=450, PETRI_TRANSITIONS=558} [2024-11-28 03:10:29,707 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 428 predicate places. [2024-11-28 03:10:29,707 INFO L471 AbstractCegarLoop]: Abstraction has has 450 places, 558 transitions, 10515 flow [2024-11-28 03:10:29,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:10:29,707 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:10:29,707 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:10:29,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-28 03:10:29,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:10:29,911 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:10:29,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:10:29,911 INFO L85 PathProgramCache]: Analyzing trace with hash -724054691, now seen corresponding path program 9 times [2024-11-28 03:10:29,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:10:29,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392810663] [2024-11-28 03:10:29,911 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:10:29,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:10:29,920 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:10:29,920 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:10:30,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:10:30,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:10:30,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392810663] [2024-11-28 03:10:30,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392810663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:10:30,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743094977] [2024-11-28 03:10:30,134 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:10:30,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:10:30,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:10:30,135 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:10:30,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252a56e2-c374-4997-a89d-a861d2705a4b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-28 03:10:30,184 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:10:30,184 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:10:30,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 03:10:30,185 INFO L279 TraceCheckSpWp]: Computing forward predicates...