./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:06:35,446 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:06:35,543 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:06:35,551 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:06:35,553 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:06:35,595 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:06:35,596 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:06:35,596 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:06:35,597 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:06:35,599 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:06:35,601 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:06:35,601 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:06:35,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:06:35,602 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:06:35,603 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:06:35,603 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:06:35,603 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:06:35,603 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:06:35,605 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:06:35,605 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:06:35,606 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:06:35,608 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:06:35,608 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:06:35,609 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:06:35,609 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:06:35,609 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:06:35,609 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:06:35,609 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:06:35,610 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:06:35,610 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:06:35,610 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:06:35,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:06:35,611 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:06:35,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:06:35,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:06:35,612 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:06:35,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:06:35,613 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:06:35,613 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:06:35,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:06:35,613 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:06:35,614 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:06:35,614 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:06:35,614 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:06:35,614 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe [2024-10-31 22:06:35,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:06:35,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:06:35,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:06:35,978 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:06:35,979 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:06:35,980 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c Unable to find full path for "g++" [2024-10-31 22:06:38,030 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:06:38,351 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:06:38,353 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2024-10-31 22:06:38,364 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/data/3eef05eb0/b5bb4389da1d466fbd633c18fe1d35e4/FLAGce729ad7f [2024-10-31 22:06:38,380 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/data/3eef05eb0/b5bb4389da1d466fbd633c18fe1d35e4 [2024-10-31 22:06:38,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:06:38,384 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:06:38,385 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:06:38,386 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:06:38,393 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:06:38,394 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:06:38" (1/1) ... [2024-10-31 22:06:38,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187f1618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:38, skipping insertion in model container [2024-10-31 22:06:38,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:06:38" (1/1) ... [2024-10-31 22:06:38,431 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:06:38,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:06:38,806 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:06:38,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:06:38,883 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:06:38,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:38 WrapperNode [2024-10-31 22:06:38,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:06:38,884 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:06:38,885 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:06:38,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:06:38,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:38" (1/1) ... [2024-10-31 22:06:38,911 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:38" (1/1) ... [2024-10-31 22:06:38,964 INFO L138 Inliner]: procedures = 24, calls = 47, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 346 [2024-10-31 22:06:38,965 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:06:38,965 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:06:38,965 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:06:38,966 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:06:38,978 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:38" (1/1) ... [2024-10-31 22:06:38,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:38" (1/1) ... [2024-10-31 22:06:38,982 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:38" (1/1) ... [2024-10-31 22:06:39,006 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-31 22:06:39,006 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:38" (1/1) ... [2024-10-31 22:06:39,006 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:38" (1/1) ... [2024-10-31 22:06:39,026 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:38" (1/1) ... [2024-10-31 22:06:39,041 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:38" (1/1) ... [2024-10-31 22:06:39,043 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:38" (1/1) ... [2024-10-31 22:06:39,045 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:38" (1/1) ... [2024-10-31 22:06:39,053 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:06:39,054 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:06:39,054 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:06:39,055 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:06:39,056 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:38" (1/1) ... [2024-10-31 22:06:39,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:06:39,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:39,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:39,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:06:39,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:06:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:06:39,179 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:06:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:06:39,179 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:06:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 22:06:39,179 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 22:06:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:06:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:06:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:06:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:06:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:06:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:06:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:06:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:06:39,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:06:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:06:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:06:39,188 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:06:39,394 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:06:39,399 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:06:40,079 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:06:40,079 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:06:40,760 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:06:40,760 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-31 22:06:40,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:06:40 BoogieIcfgContainer [2024-10-31 22:06:40,761 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:06:40,765 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:06:40,765 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:06:40,769 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:06:40,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:06:38" (1/3) ... [2024-10-31 22:06:40,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb3ab54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:06:40, skipping insertion in model container [2024-10-31 22:06:40,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:38" (2/3) ... [2024-10-31 22:06:40,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb3ab54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:06:40, skipping insertion in model container [2024-10-31 22:06:40,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:06:40" (3/3) ... [2024-10-31 22:06:40,775 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2024-10-31 22:06:40,795 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:06:40,795 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-10-31 22:06:40,796 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:06:40,934 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 22:06:41,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 89 transitions, 199 flow [2024-10-31 22:06:41,079 INFO L124 PetriNetUnfolderBase]: 8/86 cut-off events. [2024-10-31 22:06:41,080 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:06:41,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 86 events. 8/86 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 306 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2024-10-31 22:06:41,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 89 transitions, 199 flow [2024-10-31 22:06:41,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 84 transitions, 183 flow [2024-10-31 22:06:41,107 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:06:41,122 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=LoopHeads, 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;@6b512b80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:06:41,123 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-10-31 22:06:41,128 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:06:41,128 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-31 22:06:41,128 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:06:41,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:41,130 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:06:41,130 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-31 22:06:41,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:41,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1029222, now seen corresponding path program 1 times [2024-10-31 22:06:41,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:41,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846408185] [2024-10-31 22:06:41,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:41,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:41,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:41,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:41,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846408185] [2024-10-31 22:06:41,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846408185] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:41,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:41,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:06:41,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070051126] [2024-10-31 22:06:41,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:41,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:06:41,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:41,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:06:41,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:06:41,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 89 [2024-10-31 22:06:41,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:41,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:41,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 89 [2024-10-31 22:06:41,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:43,821 INFO L124 PetriNetUnfolderBase]: 6026/10035 cut-off events. [2024-10-31 22:06:43,821 INFO L125 PetriNetUnfolderBase]: For 367/367 co-relation queries the response was YES. [2024-10-31 22:06:43,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18661 conditions, 10035 events. 6026/10035 cut-off events. For 367/367 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 72899 event pairs, 5468 based on Foata normal form. 486/7021 useless extension candidates. Maximal degree in co-relation 17888. Up to 8260 conditions per place. [2024-10-31 22:06:43,920 INFO L140 encePairwiseOnDemand]: 64/89 looper letters, 52 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-10-31 22:06:43,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 84 transitions, 307 flow [2024-10-31 22:06:43,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:06:43,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:06:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-10-31 22:06:43,935 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49719101123595505 [2024-10-31 22:06:43,937 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 183 flow. Second operand 4 states and 177 transitions. [2024-10-31 22:06:43,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 84 transitions, 307 flow [2024-10-31 22:06:43,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 84 transitions, 298 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:06:43,962 INFO L231 Difference]: Finished difference. Result has 80 places, 84 transitions, 244 flow [2024-10-31 22:06:43,964 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=80, PETRI_TRANSITIONS=84} [2024-10-31 22:06:43,968 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -6 predicate places. [2024-10-31 22:06:43,968 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 84 transitions, 244 flow [2024-10-31 22:06:43,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:43,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:43,969 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:06:43,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:06:43,970 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-31 22:06:43,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:43,971 INFO L85 PathProgramCache]: Analyzing trace with hash 597844387, now seen corresponding path program 1 times [2024-10-31 22:06:43,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:43,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355905358] [2024-10-31 22:06:43,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:43,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:44,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:44,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:44,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355905358] [2024-10-31 22:06:44,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355905358] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:06:44,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948958463] [2024-10-31 22:06:44,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:44,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:44,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:44,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:06:44,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:06:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:44,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:06:44,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:06:44,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:44,415 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:06:44,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948958463] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:44,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:06:44,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-31 22:06:44,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728803478] [2024-10-31 22:06:44,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:44,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:06:44,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:44,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:06:44,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:06:44,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 89 [2024-10-31 22:06:44,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 84 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:44,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:44,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 89 [2024-10-31 22:06:44,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:46,139 INFO L124 PetriNetUnfolderBase]: 6026/10032 cut-off events. [2024-10-31 22:06:46,140 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-10-31 22:06:46,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18565 conditions, 10032 events. 6026/10032 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 72956 event pairs, 5468 based on Foata normal form. 3/6540 useless extension candidates. Maximal degree in co-relation 18492. Up to 8245 conditions per place. [2024-10-31 22:06:46,225 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 42 selfloop transitions, 17 changer transitions 0/81 dead transitions. [2024-10-31 22:06:46,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 350 flow [2024-10-31 22:06:46,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:06:46,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:06:46,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 212 transitions. [2024-10-31 22:06:46,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3970037453183521 [2024-10-31 22:06:46,229 INFO L175 Difference]: Start difference. First operand has 80 places, 84 transitions, 244 flow. Second operand 6 states and 212 transitions. [2024-10-31 22:06:46,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 350 flow [2024-10-31 22:06:46,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:06:46,233 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 266 flow [2024-10-31 22:06:46,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=266, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2024-10-31 22:06:46,235 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2024-10-31 22:06:46,235 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 266 flow [2024-10-31 22:06:46,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:46,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:46,237 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-31 22:06:46,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:06:46,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-10-31 22:06:46,438 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-31 22:06:46,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:46,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1353307884, now seen corresponding path program 1 times [2024-10-31 22:06:46,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:46,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892284184] [2024-10-31 22:06:46,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:46,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:46,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:46,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:46,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892284184] [2024-10-31 22:06:46,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892284184] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:06:46,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867372698] [2024-10-31 22:06:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:46,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:46,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:46,628 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:06:46,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:06:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:46,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:06:46,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:06:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:46,783 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:06:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:46,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867372698] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:06:46,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:06:46,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-31 22:06:46,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814969966] [2024-10-31 22:06:46,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:06:46,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:06:46,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:46,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:06:46,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:06:46,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 89 [2024-10-31 22:06:46,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 266 flow. Second operand has 12 states, 12 states have (on average 26.083333333333332) internal successors, (313), 12 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:46,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:46,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 89 [2024-10-31 22:06:46,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:49,083 INFO L124 PetriNetUnfolderBase]: 6035/10068 cut-off events. [2024-10-31 22:06:49,083 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-10-31 22:06:49,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18706 conditions, 10068 events. 6035/10068 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 73360 event pairs, 5468 based on Foata normal form. 9/6582 useless extension candidates. Maximal degree in co-relation 18494. Up to 8260 conditions per place. [2024-10-31 22:06:49,154 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 49 selfloop transitions, 37 changer transitions 0/108 dead transitions. [2024-10-31 22:06:49,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 108 transitions, 612 flow [2024-10-31 22:06:49,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:06:49,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:06:49,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 345 transitions. [2024-10-31 22:06:49,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38764044943820225 [2024-10-31 22:06:49,159 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 266 flow. Second operand 10 states and 345 transitions. [2024-10-31 22:06:49,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 108 transitions, 612 flow [2024-10-31 22:06:49,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 108 transitions, 529 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-10-31 22:06:49,164 INFO L231 Difference]: Finished difference. Result has 89 places, 108 transitions, 481 flow [2024-10-31 22:06:49,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=481, PETRI_PLACES=89, PETRI_TRANSITIONS=108} [2024-10-31 22:06:49,165 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2024-10-31 22:06:49,165 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 108 transitions, 481 flow [2024-10-31 22:06:49,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.083333333333332) internal successors, (313), 12 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:49,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:49,165 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:49,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:06:49,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-31 22:06:49,366 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-31 22:06:49,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:49,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2028927118, now seen corresponding path program 1 times [2024-10-31 22:06:49,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:49,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819675007] [2024-10-31 22:06:49,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:49,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:49,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:49,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:49,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819675007] [2024-10-31 22:06:49,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819675007] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:49,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:49,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:06:49,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530216444] [2024-10-31 22:06:49,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:49,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:06:49,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:49,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:06:49,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:06:49,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-31 22:06:49,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 108 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:49,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:49,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-31 22:06:49,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:51,399 INFO L124 PetriNetUnfolderBase]: 6263/10525 cut-off events. [2024-10-31 22:06:51,399 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2024-10-31 22:06:51,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19655 conditions, 10525 events. 6263/10525 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 76615 event pairs, 5675 based on Foata normal form. 154/7214 useless extension candidates. Maximal degree in co-relation 19497. Up to 8286 conditions per place. [2024-10-31 22:06:51,476 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 120 selfloop transitions, 10 changer transitions 1/156 dead transitions. [2024-10-31 22:06:51,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 156 transitions, 995 flow [2024-10-31 22:06:51,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:06:51,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:06:51,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 241 transitions. [2024-10-31 22:06:51,478 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5415730337078651 [2024-10-31 22:06:51,479 INFO L175 Difference]: Start difference. First operand has 89 places, 108 transitions, 481 flow. Second operand 5 states and 241 transitions. [2024-10-31 22:06:51,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 156 transitions, 995 flow [2024-10-31 22:06:51,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 156 transitions, 935 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-10-31 22:06:51,485 INFO L231 Difference]: Finished difference. Result has 93 places, 115 transitions, 548 flow [2024-10-31 22:06:51,485 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=548, PETRI_PLACES=93, PETRI_TRANSITIONS=115} [2024-10-31 22:06:51,486 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 7 predicate places. [2024-10-31 22:06:51,486 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 115 transitions, 548 flow [2024-10-31 22:06:51,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:51,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:51,487 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:51,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:06:51,488 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-31 22:06:51,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:51,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1595410801, now seen corresponding path program 1 times [2024-10-31 22:06:51,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:51,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546021034] [2024-10-31 22:06:51,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:51,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:51,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:51,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:51,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546021034] [2024-10-31 22:06:51,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546021034] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:06:51,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542072740] [2024-10-31 22:06:51,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:51,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:51,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:51,773 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:06:51,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:06:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:51,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:06:51,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:06:51,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:06:51,934 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:06:51,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542072740] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:51,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:06:51,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-31 22:06:51,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090350028] [2024-10-31 22:06:51,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:51,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:06:51,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:51,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:06:51,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:06:51,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-31 22:06:51,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 115 transitions, 548 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:51,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:51,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-31 22:06:51,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:53,217 INFO L124 PetriNetUnfolderBase]: 4698/8093 cut-off events. [2024-10-31 22:06:53,218 INFO L125 PetriNetUnfolderBase]: For 825/825 co-relation queries the response was YES. [2024-10-31 22:06:53,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15626 conditions, 8093 events. 4698/8093 cut-off events. For 825/825 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 57286 event pairs, 4210 based on Foata normal form. 0/5755 useless extension candidates. Maximal degree in co-relation 15470. Up to 6524 conditions per place. [2024-10-31 22:06:53,402 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 86 selfloop transitions, 1 changer transitions 0/112 dead transitions. [2024-10-31 22:06:53,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 112 transitions, 710 flow [2024-10-31 22:06:53,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:06:53,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:06:53,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-10-31 22:06:53,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5243445692883895 [2024-10-31 22:06:53,405 INFO L175 Difference]: Start difference. First operand has 93 places, 115 transitions, 548 flow. Second operand 3 states and 140 transitions. [2024-10-31 22:06:53,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 112 transitions, 710 flow [2024-10-31 22:06:53,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 112 transitions, 706 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-31 22:06:53,410 INFO L231 Difference]: Finished difference. Result has 91 places, 112 transitions, 534 flow [2024-10-31 22:06:53,410 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=534, PETRI_PLACES=91, PETRI_TRANSITIONS=112} [2024-10-31 22:06:53,413 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 5 predicate places. [2024-10-31 22:06:53,413 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 112 transitions, 534 flow [2024-10-31 22:06:53,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:53,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:53,414 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:53,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:06:53,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:53,615 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-31 22:06:53,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:53,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1529118875, now seen corresponding path program 1 times [2024-10-31 22:06:53,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:53,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926098226] [2024-10-31 22:06:53,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:53,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:53,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:53,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:53,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926098226] [2024-10-31 22:06:53,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926098226] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:53,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:53,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:06:53,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277156486] [2024-10-31 22:06:53,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:53,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:06:53,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:53,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:06:53,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:06:53,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-31 22:06:53,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 112 transitions, 534 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 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) [2024-10-31 22:06:53,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:53,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-31 22:06:53,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:54,645 INFO L124 PetriNetUnfolderBase]: 4250/6981 cut-off events. [2024-10-31 22:06:54,645 INFO L125 PetriNetUnfolderBase]: For 863/863 co-relation queries the response was YES. [2024-10-31 22:06:54,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14189 conditions, 6981 events. 4250/6981 cut-off events. For 863/863 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 44499 event pairs, 1558 based on Foata normal form. 105/5122 useless extension candidates. Maximal degree in co-relation 14173. Up to 4941 conditions per place. [2024-10-31 22:06:54,707 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 103 selfloop transitions, 2 changer transitions 1/131 dead transitions. [2024-10-31 22:06:54,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 131 transitions, 793 flow [2024-10-31 22:06:54,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:06:54,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:06:54,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2024-10-31 22:06:54,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5917602996254682 [2024-10-31 22:06:54,709 INFO L175 Difference]: Start difference. First operand has 91 places, 112 transitions, 534 flow. Second operand 3 states and 158 transitions. [2024-10-31 22:06:54,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 131 transitions, 793 flow [2024-10-31 22:06:54,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 131 transitions, 792 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:06:54,714 INFO L231 Difference]: Finished difference. Result has 93 places, 112 transitions, 538 flow [2024-10-31 22:06:54,715 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=538, PETRI_PLACES=93, PETRI_TRANSITIONS=112} [2024-10-31 22:06:54,715 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 7 predicate places. [2024-10-31 22:06:54,716 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 112 transitions, 538 flow [2024-10-31 22:06:54,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 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) [2024-10-31 22:06:54,716 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:54,716 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:54,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:06:54,717 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-31 22:06:54,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:54,717 INFO L85 PathProgramCache]: Analyzing trace with hash -2081871629, now seen corresponding path program 1 times [2024-10-31 22:06:54,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:54,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557795107] [2024-10-31 22:06:54,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:54,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:06:54,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:54,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557795107] [2024-10-31 22:06:54,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557795107] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:54,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:54,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:06:54,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499782501] [2024-10-31 22:06:54,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:54,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:06:54,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:54,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:06:54,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:06:54,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-31 22:06:54,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 112 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:54,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:54,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-31 22:06:54,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:55,880 INFO L124 PetriNetUnfolderBase]: 4766/8152 cut-off events. [2024-10-31 22:06:55,880 INFO L125 PetriNetUnfolderBase]: For 1495/1525 co-relation queries the response was YES. [2024-10-31 22:06:55,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17042 conditions, 8152 events. 4766/8152 cut-off events. For 1495/1525 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 54932 event pairs, 2202 based on Foata normal form. 150/6222 useless extension candidates. Maximal degree in co-relation 17024. Up to 3805 conditions per place. [2024-10-31 22:06:55,939 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 106 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-10-31 22:06:55,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 133 transitions, 810 flow [2024-10-31 22:06:55,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:06:55,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:06:55,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2024-10-31 22:06:55,941 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.599250936329588 [2024-10-31 22:06:55,941 INFO L175 Difference]: Start difference. First operand has 93 places, 112 transitions, 538 flow. Second operand 3 states and 160 transitions. [2024-10-31 22:06:55,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 133 transitions, 810 flow [2024-10-31 22:06:55,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 133 transitions, 808 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:06:55,948 INFO L231 Difference]: Finished difference. Result has 95 places, 113 transitions, 550 flow [2024-10-31 22:06:55,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=550, PETRI_PLACES=95, PETRI_TRANSITIONS=113} [2024-10-31 22:06:55,950 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 9 predicate places. [2024-10-31 22:06:55,950 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 113 transitions, 550 flow [2024-10-31 22:06:55,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:55,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:55,951 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:55,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:06:55,951 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-31 22:06:55,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:55,952 INFO L85 PathProgramCache]: Analyzing trace with hash -974348692, now seen corresponding path program 1 times [2024-10-31 22:06:55,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:55,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667029282] [2024-10-31 22:06:55,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:55,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:56,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:06:56,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:56,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667029282] [2024-10-31 22:06:56,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667029282] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:56,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:56,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:06:56,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053654780] [2024-10-31 22:06:56,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:56,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:06:56,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:56,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:06:56,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:06:56,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-31 22:06:56,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 113 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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) [2024-10-31 22:06:56,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:56,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-31 22:06:56,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:57,011 INFO L124 PetriNetUnfolderBase]: 3369/6219 cut-off events. [2024-10-31 22:06:57,011 INFO L125 PetriNetUnfolderBase]: For 1085/1088 co-relation queries the response was YES. [2024-10-31 22:06:57,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12986 conditions, 6219 events. 3369/6219 cut-off events. For 1085/1088 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 43567 event pairs, 1984 based on Foata normal form. 15/4739 useless extension candidates. Maximal degree in co-relation 12966. Up to 4731 conditions per place. [2024-10-31 22:06:57,062 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 95 selfloop transitions, 3 changer transitions 0/123 dead transitions. [2024-10-31 22:06:57,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 123 transitions, 773 flow [2024-10-31 22:06:57,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:06:57,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:06:57,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2024-10-31 22:06:57,064 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5543071161048689 [2024-10-31 22:06:57,064 INFO L175 Difference]: Start difference. First operand has 95 places, 113 transitions, 550 flow. Second operand 3 states and 148 transitions. [2024-10-31 22:06:57,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 123 transitions, 773 flow [2024-10-31 22:06:57,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 123 transitions, 771 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:06:57,071 INFO L231 Difference]: Finished difference. Result has 97 places, 115 transitions, 571 flow [2024-10-31 22:06:57,072 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=571, PETRI_PLACES=97, PETRI_TRANSITIONS=115} [2024-10-31 22:06:57,073 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 11 predicate places. [2024-10-31 22:06:57,073 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 115 transitions, 571 flow [2024-10-31 22:06:57,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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) [2024-10-31 22:06:57,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:57,073 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-31 22:06:57,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:06:57,074 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-31 22:06:57,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:57,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1090455241, now seen corresponding path program 2 times [2024-10-31 22:06:57,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:57,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178400925] [2024-10-31 22:06:57,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:57,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:57,288 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:57,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:57,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178400925] [2024-10-31 22:06:57,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178400925] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:06:57,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397002615] [2024-10-31 22:06:57,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:06:57,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:57,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:57,293 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:06:57,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:06:57,410 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:06:57,410 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:06:57,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:06:57,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:06:57,500 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:06:57,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:06:57,552 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:06:57,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397002615] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:06:57,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:06:57,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-31 22:06:57,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651794040] [2024-10-31 22:06:57,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:06:57,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 22:06:57,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:57,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 22:06:57,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:06:57,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 89 [2024-10-31 22:06:57,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 115 transitions, 571 flow. Second operand has 14 states, 14 states have (on average 26.142857142857142) internal successors, (366), 14 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:57,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:57,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 89 [2024-10-31 22:06:57,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:59,242 INFO L124 PetriNetUnfolderBase]: 3374/6249 cut-off events. [2024-10-31 22:06:59,242 INFO L125 PetriNetUnfolderBase]: For 2005/2005 co-relation queries the response was YES. [2024-10-31 22:06:59,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13510 conditions, 6249 events. 3374/6249 cut-off events. For 2005/2005 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 44090 event pairs, 2811 based on Foata normal form. 6/4754 useless extension candidates. Maximal degree in co-relation 13488. Up to 4936 conditions per place. [2024-10-31 22:06:59,292 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 46 selfloop transitions, 56 changer transitions 0/124 dead transitions. [2024-10-31 22:06:59,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 124 transitions, 836 flow [2024-10-31 22:06:59,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-31 22:06:59,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-31 22:06:59,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 695 transitions. [2024-10-31 22:06:59,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.325374531835206 [2024-10-31 22:06:59,298 INFO L175 Difference]: Start difference. First operand has 97 places, 115 transitions, 571 flow. Second operand 24 states and 695 transitions. [2024-10-31 22:06:59,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 124 transitions, 836 flow [2024-10-31 22:06:59,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 124 transitions, 827 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-31 22:06:59,309 INFO L231 Difference]: Finished difference. Result has 120 places, 124 transitions, 760 flow [2024-10-31 22:06:59,309 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=760, PETRI_PLACES=120, PETRI_TRANSITIONS=124} [2024-10-31 22:06:59,310 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 34 predicate places. [2024-10-31 22:06:59,310 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 124 transitions, 760 flow [2024-10-31 22:06:59,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 26.142857142857142) internal successors, (366), 14 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:59,311 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:59,311 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:59,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:06:59,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:59,516 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-31 22:06:59,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:59,517 INFO L85 PathProgramCache]: Analyzing trace with hash 682300369, now seen corresponding path program 1 times [2024-10-31 22:06:59,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:59,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855195265] [2024-10-31 22:06:59,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:59,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:59,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:06:59,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:59,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855195265] [2024-10-31 22:06:59,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855195265] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:59,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:59,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:06:59,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429487942] [2024-10-31 22:06:59,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:59,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:06:59,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:59,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:06:59,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:06:59,763 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-31 22:06:59,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 124 transitions, 760 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:59,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:59,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-31 22:06:59,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:07:00,792 INFO L124 PetriNetUnfolderBase]: 3568/6658 cut-off events. [2024-10-31 22:07:00,792 INFO L125 PetriNetUnfolderBase]: For 1542/1544 co-relation queries the response was YES. [2024-10-31 22:07:00,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14181 conditions, 6658 events. 3568/6658 cut-off events. For 1542/1544 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 46561 event pairs, 2996 based on Foata normal form. 40/5199 useless extension candidates. Maximal degree in co-relation 14156. Up to 4989 conditions per place. [2024-10-31 22:07:00,851 INFO L140 encePairwiseOnDemand]: 80/89 looper letters, 102 selfloop transitions, 11 changer transitions 21/158 dead transitions. [2024-10-31 22:07:00,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 158 transitions, 1243 flow [2024-10-31 22:07:00,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:07:00,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:07:00,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 227 transitions. [2024-10-31 22:07:00,854 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5101123595505618 [2024-10-31 22:07:00,854 INFO L175 Difference]: Start difference. First operand has 120 places, 124 transitions, 760 flow. Second operand 5 states and 227 transitions. [2024-10-31 22:07:00,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 158 transitions, 1243 flow [2024-10-31 22:07:00,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 158 transitions, 1088 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-10-31 22:07:00,866 INFO L231 Difference]: Finished difference. Result has 116 places, 126 transitions, 695 flow [2024-10-31 22:07:00,867 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=695, PETRI_PLACES=116, PETRI_TRANSITIONS=126} [2024-10-31 22:07:00,868 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 30 predicate places. [2024-10-31 22:07:00,868 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 126 transitions, 695 flow [2024-10-31 22:07:00,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:07:00,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:07:00,869 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-31 22:07:00,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:07:00,869 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-31 22:07:00,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:00,870 INFO L85 PathProgramCache]: Analyzing trace with hash -309320881, now seen corresponding path program 1 times [2024-10-31 22:07:00,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:00,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690293920] [2024-10-31 22:07:00,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:00,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:01,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:01,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690293920] [2024-10-31 22:07:01,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690293920] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:07:01,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939626488] [2024-10-31 22:07:01,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:01,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:07:01,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:07:01,187 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:07:01,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:07:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:01,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-31 22:07:01,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:07:01,423 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:01,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:07:01,749 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:01,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939626488] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:07:01,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:07:01,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-31 22:07:01,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105594976] [2024-10-31 22:07:01,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:07:01,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-31 22:07:01,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:01,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-31 22:07:01,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-31 22:07:01,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 89 [2024-10-31 22:07:01,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 126 transitions, 695 flow. Second operand has 28 states, 28 states have (on average 26.071428571428573) internal successors, (730), 28 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:07:01,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:07:01,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 89 [2024-10-31 22:07:01,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:07:03,771 INFO L124 PetriNetUnfolderBase]: 3616/6845 cut-off events. [2024-10-31 22:07:03,771 INFO L125 PetriNetUnfolderBase]: For 2753/2753 co-relation queries the response was YES. [2024-10-31 22:07:03,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15530 conditions, 6845 events. 3616/6845 cut-off events. For 2753/2753 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 48834 event pairs, 2996 based on Foata normal form. 42/5360 useless extension candidates. Maximal degree in co-relation 15505. Up to 5320 conditions per place. [2024-10-31 22:07:03,831 INFO L140 encePairwiseOnDemand]: 77/89 looper letters, 49 selfloop transitions, 125 changer transitions 0/196 dead transitions. [2024-10-31 22:07:03,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 196 transitions, 1610 flow [2024-10-31 22:07:03,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-31 22:07:03,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-31 22:07:03,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 818 transitions. [2024-10-31 22:07:03,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35350043215211757 [2024-10-31 22:07:03,837 INFO L175 Difference]: Start difference. First operand has 116 places, 126 transitions, 695 flow. Second operand 26 states and 818 transitions. [2024-10-31 22:07:03,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 196 transitions, 1610 flow [2024-10-31 22:07:03,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 196 transitions, 1593 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-31 22:07:03,854 INFO L231 Difference]: Finished difference. Result has 147 places, 196 transitions, 1579 flow [2024-10-31 22:07:03,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1579, PETRI_PLACES=147, PETRI_TRANSITIONS=196} [2024-10-31 22:07:03,855 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 61 predicate places. [2024-10-31 22:07:03,855 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 196 transitions, 1579 flow [2024-10-31 22:07:03,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 26.071428571428573) internal successors, (730), 28 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:07:03,856 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:07:03,856 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:03,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-31 22:07:04,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:07:04,061 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-31 22:07:04,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:04,062 INFO L85 PathProgramCache]: Analyzing trace with hash -843405047, now seen corresponding path program 1 times [2024-10-31 22:07:04,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:04,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923947433] [2024-10-31 22:07:04,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:04,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:04,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:07:04,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:04,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923947433] [2024-10-31 22:07:04,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923947433] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:07:04,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186923342] [2024-10-31 22:07:04,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:04,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:07:04,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:07:04,384 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:07:04,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:07:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:04,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:07:04,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:07:04,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:07:04,581 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:07:04,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186923342] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:04,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:07:04,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-10-31 22:07:04,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827153075] [2024-10-31 22:07:04,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:04,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:07:04,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:04,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:07:04,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:07:04,584 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-31 22:07:04,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 196 transitions, 1579 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 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) [2024-10-31 22:07:04,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:07:04,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-31 22:07:04,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:07:05,474 INFO L124 PetriNetUnfolderBase]: 2822/5456 cut-off events. [2024-10-31 22:07:05,475 INFO L125 PetriNetUnfolderBase]: For 2695/2695 co-relation queries the response was YES. [2024-10-31 22:07:05,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12697 conditions, 5456 events. 2822/5456 cut-off events. For 2695/2695 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 37645 event pairs, 2299 based on Foata normal form. 0/4520 useless extension candidates. Maximal degree in co-relation 12664. Up to 4363 conditions per place. [2024-10-31 22:07:05,529 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 169 selfloop transitions, 1 changer transitions 0/194 dead transitions. [2024-10-31 22:07:05,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 194 transitions, 1911 flow [2024-10-31 22:07:05,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:07:05,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:07:05,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-10-31 22:07:05,531 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5131086142322098 [2024-10-31 22:07:05,531 INFO L175 Difference]: Start difference. First operand has 147 places, 196 transitions, 1579 flow. Second operand 3 states and 137 transitions. [2024-10-31 22:07:05,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 194 transitions, 1911 flow [2024-10-31 22:07:05,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 194 transitions, 1521 flow, removed 92 selfloop flow, removed 13 redundant places. [2024-10-31 22:07:05,555 INFO L231 Difference]: Finished difference. Result has 134 places, 194 transitions, 1183 flow [2024-10-31 22:07:05,556 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1183, PETRI_PLACES=134, PETRI_TRANSITIONS=194} [2024-10-31 22:07:05,557 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 48 predicate places. [2024-10-31 22:07:05,557 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 194 transitions, 1183 flow [2024-10-31 22:07:05,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 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) [2024-10-31 22:07:05,558 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:07:05,558 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:05,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-31 22:07:05,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:07:05,762 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-31 22:07:05,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:05,763 INFO L85 PathProgramCache]: Analyzing trace with hash -843405050, now seen corresponding path program 1 times [2024-10-31 22:07:05,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:05,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880992714] [2024-10-31 22:07:05,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:05,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:07,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:07,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:07,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880992714] [2024-10-31 22:07:07,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880992714] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:07:07,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177783895] [2024-10-31 22:07:07,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:07,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:07:07,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:07:07,115 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:07:07,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9633de-b46e-41da-a1eb-875d3913f18d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 22:07:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:07,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 26 conjuncts are in the unsatisfiable core