./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/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_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/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_15dc602f-415f-4cfc-a671-ce75d2895d37/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 ebdf94362dc31684fc6d7640230484df679da941d20fe978f9edfe1d75c48a51 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:10:25,004 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:10:25,066 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:10:25,070 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:10:25,071 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:10:25,109 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:10:25,110 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:10:25,110 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:10:25,111 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:10:25,111 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:10:25,112 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:10:25,112 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:10:25,113 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:10:25,113 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:10:25,114 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:10:25,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:10:25,114 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:10:25,115 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:10:25,115 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:10:25,115 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:10:25,116 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:10:25,116 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:10:25,117 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:10:25,117 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:10:25,117 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:10:25,118 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:10:25,118 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:10:25,118 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:10:25,119 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:10:25,119 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:10:25,119 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:10:25,119 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:10:25,120 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:10:25,120 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:10:25,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:25,121 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:10:25,121 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:10:25,121 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:10:25,122 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:10:25,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:10:25,122 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:10:25,128 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:10:25,128 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:10:25,128 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:10:25,129 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_15dc602f-415f-4cfc-a671-ce75d2895d37/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebdf94362dc31684fc6d7640230484df679da941d20fe978f9edfe1d75c48a51 [2024-10-31 22:10:25,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:10:25,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:10:25,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:10:25,472 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:10:25,472 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:10:25,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c Unable to find full path for "g++" [2024-10-31 22:10:27,451 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:10:27,663 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:10:27,663 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-10-31 22:10:27,672 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/data/64d691f3e/59f71dcc968743698693f4c94f9f66ac/FLAG2b5a9d3ad [2024-10-31 22:10:27,685 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/data/64d691f3e/59f71dcc968743698693f4c94f9f66ac [2024-10-31 22:10:27,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:10:27,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:10:27,691 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:27,691 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:10:27,698 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:10:27,699 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:27" (1/1) ... [2024-10-31 22:10:27,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e698ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:27, skipping insertion in model container [2024-10-31 22:10:27,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:27" (1/1) ... [2024-10-31 22:10:27,727 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:10:27,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:27,991 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:10:28,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:28,041 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:10:28,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:28 WrapperNode [2024-10-31 22:10:28,042 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:28,043 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:28,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:10:28,044 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:10:28,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:28" (1/1) ... [2024-10-31 22:10:28,060 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:28" (1/1) ... [2024-10-31 22:10:28,087 INFO L138 Inliner]: procedures = 25, calls = 31, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 176 [2024-10-31 22:10:28,088 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:28,088 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:10:28,089 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:10:28,089 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:10:28,105 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:28" (1/1) ... [2024-10-31 22:10:28,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:28" (1/1) ... [2024-10-31 22:10:28,108 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:28" (1/1) ... [2024-10-31 22:10:28,124 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-31 22:10:28,125 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:28" (1/1) ... [2024-10-31 22:10:28,125 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:28" (1/1) ... [2024-10-31 22:10:28,131 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:28" (1/1) ... [2024-10-31 22:10:28,135 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:28" (1/1) ... [2024-10-31 22:10:28,137 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:28" (1/1) ... [2024-10-31 22:10:28,139 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:28" (1/1) ... [2024-10-31 22:10:28,141 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:10:28,142 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:10:28,143 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:10:28,143 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:10:28,144 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:28" (1/1) ... [2024-10-31 22:10:28,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:28,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:28,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:28,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:10:28,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:10:28,226 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:10:28,226 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:10:28,226 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:10:28,226 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:10:28,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:10:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:10:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:10:28,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:10:28,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:10:28,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:10:28,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:10:28,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:10:28,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:10:28,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:10:28,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:10:28,233 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 22:10:28,402 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:10:28,407 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:10:28,891 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:10:28,891 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:10:29,390 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:10:29,394 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-31 22:10:29,395 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:29 BoogieIcfgContainer [2024-10-31 22:10:29,395 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:10:29,425 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:10:29,425 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:10:29,430 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:10:29,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:10:27" (1/3) ... [2024-10-31 22:10:29,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10430ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:29, skipping insertion in model container [2024-10-31 22:10:29,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:28" (2/3) ... [2024-10-31 22:10:29,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10430ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:29, skipping insertion in model container [2024-10-31 22:10:29,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:29" (3/3) ... [2024-10-31 22:10:29,435 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2024-10-31 22:10:29,456 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:10:29,456 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-10-31 22:10:29,456 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:10:29,583 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:10:29,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 48 transitions, 110 flow [2024-10-31 22:10:29,667 INFO L124 PetriNetUnfolderBase]: 3/46 cut-off events. [2024-10-31 22:10:29,667 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:10:29,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 3/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 132 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-10-31 22:10:29,672 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 48 transitions, 110 flow [2024-10-31 22:10:29,677 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 44 transitions, 97 flow [2024-10-31 22:10:29,693 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:29,700 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;@2a11cd5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:29,701 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-10-31 22:10:29,707 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:10:29,707 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-31 22:10:29,708 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:29,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:29,708 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:10:29,709 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:29,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:29,714 INFO L85 PathProgramCache]: Analyzing trace with hash 600957, now seen corresponding path program 1 times [2024-10-31 22:10:29,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:29,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231848201] [2024-10-31 22:10:29,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:29,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:30,014 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 22:10:30,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:30,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231848201] [2024-10-31 22:10:30,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231848201] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:30,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:30,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:30,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046132126] [2024-10-31 22:10:30,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:30,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:10:30,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:30,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:10:30,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:10:30,078 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-31 22:10:30,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:30,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:30,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-31 22:10:30,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:30,517 INFO L124 PetriNetUnfolderBase]: 273/521 cut-off events. [2024-10-31 22:10:30,518 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-10-31 22:10:30,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1023 conditions, 521 events. 273/521 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 2895 event pairs, 232 based on Foata normal form. 1/323 useless extension candidates. Maximal degree in co-relation 950. Up to 468 conditions per place. [2024-10-31 22:10:30,525 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 28 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-10-31 22:10:30,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 159 flow [2024-10-31 22:10:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:10:30,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:10:30,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-10-31 22:10:30,544 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-10-31 22:10:30,548 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 97 flow. Second operand 4 states and 90 transitions. [2024-10-31 22:10:30,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 159 flow [2024-10-31 22:10:30,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 154 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:10:30,562 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 113 flow [2024-10-31 22:10:30,564 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2024-10-31 22:10:30,569 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2024-10-31 22:10:30,569 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 113 flow [2024-10-31 22:10:30,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:30,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:30,570 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:10:30,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:10:30,571 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:30,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:30,571 INFO L85 PathProgramCache]: Analyzing trace with hash 723828306, now seen corresponding path program 1 times [2024-10-31 22:10:30,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:30,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111170206] [2024-10-31 22:10:30,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:30,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:30,760 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 22:10:30,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:30,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111170206] [2024-10-31 22:10:30,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111170206] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:30,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59566327] [2024-10-31 22:10:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:30,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:30,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:30,765 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:30,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:10:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:30,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:10:30,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:30,972 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 22:10:30,973 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:10:30,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59566327] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:30,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:10:30,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-31 22:10:30,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512979337] [2024-10-31 22:10:30,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:30,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:10:30,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:30,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:10:30,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:10:30,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-31 22:10:30,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 113 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 22:10:30,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:30,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-31 22:10:30,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:31,302 INFO L124 PetriNetUnfolderBase]: 273/520 cut-off events. [2024-10-31 22:10:31,303 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:10:31,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1023 conditions, 520 events. 273/520 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 2911 event pairs, 232 based on Foata normal form. 1/323 useless extension candidates. Maximal degree in co-relation 996. Up to 463 conditions per place. [2024-10-31 22:10:31,308 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 24 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-10-31 22:10:31,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 171 flow [2024-10-31 22:10:31,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:10:31,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:10:31,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-10-31 22:10:31,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-10-31 22:10:31,311 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 113 flow. Second operand 6 states and 110 transitions. [2024-10-31 22:10:31,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 171 flow [2024-10-31 22:10:31,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:10:31,314 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 120 flow [2024-10-31 22:10:31,314 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=120, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-10-31 22:10:31,315 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places. [2024-10-31 22:10:31,315 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 120 flow [2024-10-31 22:10:31,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 22:10:31,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:31,316 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:10:31,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:10:31,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:31,523 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:31,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:31,525 INFO L85 PathProgramCache]: Analyzing trace with hash 725815757, now seen corresponding path program 1 times [2024-10-31 22:10:31,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:31,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483390774] [2024-10-31 22:10:31,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:31,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:31,770 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 22:10:31,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:31,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483390774] [2024-10-31 22:10:31,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483390774] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:31,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:31,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:10:31,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062949415] [2024-10-31 22:10:31,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:31,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:10:31,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:31,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:10:31,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:10:31,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-31 22:10:31,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 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 22:10:31,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:31,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-31 22:10:31,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:32,111 INFO L124 PetriNetUnfolderBase]: 378/737 cut-off events. [2024-10-31 22:10:32,112 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-31 22:10:32,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 737 events. 378/737 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4077 event pairs, 302 based on Foata normal form. 0/479 useless extension candidates. Maximal degree in co-relation 1110. Up to 514 conditions per place. [2024-10-31 22:10:32,120 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 52 selfloop transitions, 5 changer transitions 2/70 dead transitions. [2024-10-31 22:10:32,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 300 flow [2024-10-31 22:10:32,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:10:32,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:10:32,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-10-31 22:10:32,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-31 22:10:32,122 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 120 flow. Second operand 5 states and 130 transitions. [2024-10-31 22:10:32,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 300 flow [2024-10-31 22:10:32,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 70 transitions, 278 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-31 22:10:32,127 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 123 flow [2024-10-31 22:10:32,128 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-10-31 22:10:32,129 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2024-10-31 22:10:32,130 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 123 flow [2024-10-31 22:10:32,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 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 22:10:32,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:32,131 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-31 22:10:32,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:10:32,131 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:32,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:32,132 INFO L85 PathProgramCache]: Analyzing trace with hash 963841598, now seen corresponding path program 1 times [2024-10-31 22:10:32,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:32,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218496871] [2024-10-31 22:10:32,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:32,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:32,258 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 22:10:32,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218496871] [2024-10-31 22:10:32,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218496871] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947280786] [2024-10-31 22:10:32,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:32,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:32,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:32,262 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:32,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:10:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:32,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:10:32,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:32,392 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 22:10:32,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:32,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:32,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947280786] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:32,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:32,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-31 22:10:32,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360815199] [2024-10-31 22:10:32,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:32,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:10:32,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:32,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:10:32,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:10:32,471 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-31 22:10:32,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 123 flow. Second operand has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 0 states have call successors, (0), 0 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 22:10:32,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:32,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-31 22:10:32,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:32,880 INFO L124 PetriNetUnfolderBase]: 352/748 cut-off events. [2024-10-31 22:10:32,880 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2024-10-31 22:10:32,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1557 conditions, 748 events. 352/748 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4430 event pairs, 302 based on Foata normal form. 3/525 useless extension candidates. Maximal degree in co-relation 1143. Up to 616 conditions per place. [2024-10-31 22:10:32,887 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 29 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2024-10-31 22:10:32,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 237 flow [2024-10-31 22:10:32,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:10:32,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:10:32,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-10-31 22:10:32,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36041666666666666 [2024-10-31 22:10:32,890 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 123 flow. Second operand 10 states and 173 transitions. [2024-10-31 22:10:32,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 237 flow [2024-10-31 22:10:32,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 53 transitions, 232 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:10:32,893 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 192 flow [2024-10-31 22:10:32,893 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=192, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-10-31 22:10:32,895 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 12 predicate places. [2024-10-31 22:10:32,896 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 192 flow [2024-10-31 22:10:32,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 0 states have call successors, (0), 0 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 22:10:32,897 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:32,897 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:32,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:33,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:33,098 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:33,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:33,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1692958036, now seen corresponding path program 1 times [2024-10-31 22:10:33,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:33,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134633960] [2024-10-31 22:10:33,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:33,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:33,210 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 22:10:33,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:33,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134633960] [2024-10-31 22:10:33,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134633960] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:33,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:33,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:10:33,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366233382] [2024-10-31 22:10:33,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:33,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:10:33,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:33,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:10:33,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:10:33,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-31 22:10:33,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 22:10:33,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:33,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-31 22:10:33,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:33,465 INFO L124 PetriNetUnfolderBase]: 325/655 cut-off events. [2024-10-31 22:10:33,466 INFO L125 PetriNetUnfolderBase]: For 127/147 co-relation queries the response was YES. [2024-10-31 22:10:33,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 655 events. 325/655 cut-off events. For 127/147 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3568 event pairs, 272 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 1337. Up to 521 conditions per place. [2024-10-31 22:10:33,471 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 37 selfloop transitions, 2 changer transitions 14/64 dead transitions. [2024-10-31 22:10:33,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 64 transitions, 333 flow [2024-10-31 22:10:33,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:10:33,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:10:33,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-10-31 22:10:33,472 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-10-31 22:10:33,473 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 192 flow. Second operand 5 states and 115 transitions. [2024-10-31 22:10:33,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 64 transitions, 333 flow [2024-10-31 22:10:33,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 64 transitions, 322 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-31 22:10:33,476 INFO L231 Difference]: Finished difference. Result has 64 places, 50 transitions, 174 flow [2024-10-31 22:10:33,476 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=64, PETRI_TRANSITIONS=50} [2024-10-31 22:10:33,477 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 16 predicate places. [2024-10-31 22:10:33,477 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 50 transitions, 174 flow [2024-10-31 22:10:33,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 22:10:33,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:33,478 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:33,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:10:33,478 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:33,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:33,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1459154219, now seen corresponding path program 1 times [2024-10-31 22:10:33,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:33,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139220212] [2024-10-31 22:10:33,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:33,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:33,812 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 22:10:33,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:33,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139220212] [2024-10-31 22:10:33,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139220212] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:33,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761906521] [2024-10-31 22:10:33,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:33,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:33,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:33,816 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:33,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:10:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:33,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-31 22:10:33,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:33,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-31 22:10:34,055 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 22:10:34,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:34,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-31 22:10:34,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-10-31 22:10:34,170 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 22:10:34,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761906521] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:34,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:34,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-31 22:10:34,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14638774] [2024-10-31 22:10:34,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:34,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:10:34,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:34,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:10:34,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:10:34,192 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-31 22:10:34,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 50 transitions, 174 flow. Second operand has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 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 22:10:34,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:34,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-31 22:10:34,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:34,670 INFO L124 PetriNetUnfolderBase]: 469/998 cut-off events. [2024-10-31 22:10:34,671 INFO L125 PetriNetUnfolderBase]: For 125/172 co-relation queries the response was YES. [2024-10-31 22:10:34,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1999 conditions, 998 events. 469/998 cut-off events. For 125/172 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6046 event pairs, 118 based on Foata normal form. 0/678 useless extension candidates. Maximal degree in co-relation 1975. Up to 294 conditions per place. [2024-10-31 22:10:34,680 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 54 selfloop transitions, 15 changer transitions 0/81 dead transitions. [2024-10-31 22:10:34,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 388 flow [2024-10-31 22:10:34,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:10:34,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:10:34,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-10-31 22:10:34,682 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4713541666666667 [2024-10-31 22:10:34,682 INFO L175 Difference]: Start difference. First operand has 64 places, 50 transitions, 174 flow. Second operand 8 states and 181 transitions. [2024-10-31 22:10:34,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 388 flow [2024-10-31 22:10:34,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 81 transitions, 362 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-10-31 22:10:34,689 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 227 flow [2024-10-31 22:10:34,690 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=227, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-10-31 22:10:34,690 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 15 predicate places. [2024-10-31 22:10:34,691 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 227 flow [2024-10-31 22:10:34,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 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 22:10:34,692 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:34,692 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:34,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:10:34,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:34,893 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:34,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:34,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1459154218, now seen corresponding path program 1 times [2024-10-31 22:10:34,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:34,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701459598] [2024-10-31 22:10:34,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:34,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:35,234 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 22:10:35,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:35,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701459598] [2024-10-31 22:10:35,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701459598] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:35,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798199222] [2024-10-31 22:10:35,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:35,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:35,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:35,237 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:35,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:10:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:35,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-31 22:10:35,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:35,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-31 22:10:35,408 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 22:10:35,408 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:35,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-10-31 22:10:35,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-31 22:10:35,483 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 22:10:35,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798199222] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:35,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:35,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-10-31 22:10:35,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080837103] [2024-10-31 22:10:35,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:35,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:10:35,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:35,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:10:35,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:10:35,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-31 22:10:35,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 227 flow. Second operand has 13 states, 13 states have (on average 16.53846153846154) internal successors, (215), 13 states have internal predecessors, (215), 0 states have call successors, (0), 0 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 22:10:35,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:35,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-31 22:10:35,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:35,933 INFO L124 PetriNetUnfolderBase]: 440/941 cut-off events. [2024-10-31 22:10:35,933 INFO L125 PetriNetUnfolderBase]: For 317/317 co-relation queries the response was YES. [2024-10-31 22:10:35,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2154 conditions, 941 events. 440/941 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5600 event pairs, 106 based on Foata normal form. 0/671 useless extension candidates. Maximal degree in co-relation 2122. Up to 245 conditions per place. [2024-10-31 22:10:35,941 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 53 selfloop transitions, 15 changer transitions 0/80 dead transitions. [2024-10-31 22:10:35,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 413 flow [2024-10-31 22:10:35,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:10:35,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:10:35,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-10-31 22:10:35,943 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-10-31 22:10:35,943 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 227 flow. Second operand 8 states and 180 transitions. [2024-10-31 22:10:35,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 413 flow [2024-10-31 22:10:35,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 80 transitions, 403 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:10:35,947 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 243 flow [2024-10-31 22:10:35,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=243, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2024-10-31 22:10:35,950 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 18 predicate places. [2024-10-31 22:10:35,950 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 243 flow [2024-10-31 22:10:35,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.53846153846154) internal successors, (215), 13 states have internal predecessors, (215), 0 states have call successors, (0), 0 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 22:10:35,950 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:35,951 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:35,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:36,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-31 22:10:36,152 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:36,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:36,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1459154216, now seen corresponding path program 1 times [2024-10-31 22:10:36,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:36,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119385301] [2024-10-31 22:10:36,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:36,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:36,244 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 22:10:36,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:36,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119385301] [2024-10-31 22:10:36,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119385301] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:36,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:36,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:10:36,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174474672] [2024-10-31 22:10:36,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:36,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:36,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:36,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:36,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:36,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-31 22:10:36,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 22:10:36,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:36,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-31 22:10:36,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:36,528 INFO L124 PetriNetUnfolderBase]: 606/1239 cut-off events. [2024-10-31 22:10:36,528 INFO L125 PetriNetUnfolderBase]: For 864/864 co-relation queries the response was YES. [2024-10-31 22:10:36,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3017 conditions, 1239 events. 606/1239 cut-off events. For 864/864 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7544 event pairs, 168 based on Foata normal form. 0/943 useless extension candidates. Maximal degree in co-relation 2985. Up to 881 conditions per place. [2024-10-31 22:10:36,537 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 56 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2024-10-31 22:10:36,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 69 transitions, 406 flow [2024-10-31 22:10:36,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:36,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:36,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-10-31 22:10:36,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2024-10-31 22:10:36,539 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 243 flow. Second operand 3 states and 86 transitions. [2024-10-31 22:10:36,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 69 transitions, 406 flow [2024-10-31 22:10:36,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 69 transitions, 391 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:10:36,542 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 255 flow [2024-10-31 22:10:36,542 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-10-31 22:10:36,543 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 16 predicate places. [2024-10-31 22:10:36,543 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 255 flow [2024-10-31 22:10:36,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 22:10:36,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:36,544 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:36,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:10:36,544 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:36,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:36,545 INFO L85 PathProgramCache]: Analyzing trace with hash -2119145569, now seen corresponding path program 1 times [2024-10-31 22:10:36,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:36,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461836073] [2024-10-31 22:10:36,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:36,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:36,809 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 22:10:36,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:36,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461836073] [2024-10-31 22:10:36,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461836073] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:36,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104549406] [2024-10-31 22:10:36,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:36,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:36,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:36,812 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:36,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:10:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:36,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-31 22:10:36,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:36,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-31 22:10:36,983 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 22:10:36,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:37,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-10-31 22:10:37,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-31 22:10:37,064 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 22:10:37,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104549406] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:37,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:37,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-31 22:10:37,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472142971] [2024-10-31 22:10:37,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:37,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:10:37,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:37,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:10:37,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:10:37,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-31 22:10:37,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 255 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 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 22:10:37,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:37,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-31 22:10:37,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:37,600 INFO L124 PetriNetUnfolderBase]: 739/1546 cut-off events. [2024-10-31 22:10:37,601 INFO L125 PetriNetUnfolderBase]: For 984/984 co-relation queries the response was YES. [2024-10-31 22:10:37,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3915 conditions, 1546 events. 739/1546 cut-off events. For 984/984 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 9856 event pairs, 177 based on Foata normal form. 0/1202 useless extension candidates. Maximal degree in co-relation 3884. Up to 401 conditions per place. [2024-10-31 22:10:37,613 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 67 selfloop transitions, 15 changer transitions 0/96 dead transitions. [2024-10-31 22:10:37,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 96 transitions, 611 flow [2024-10-31 22:10:37,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:10:37,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:10:37,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-10-31 22:10:37,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4661458333333333 [2024-10-31 22:10:37,615 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 255 flow. Second operand 8 states and 179 transitions. [2024-10-31 22:10:37,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 96 transitions, 611 flow [2024-10-31 22:10:37,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 96 transitions, 608 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:10:37,619 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 325 flow [2024-10-31 22:10:37,619 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=325, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2024-10-31 22:10:37,620 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 24 predicate places. [2024-10-31 22:10:37,620 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 325 flow [2024-10-31 22:10:37,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 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 22:10:37,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:37,621 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:37,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:37,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-31 22:10:37,825 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:37,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:37,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2119145568, now seen corresponding path program 1 times [2024-10-31 22:10:37,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:37,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302596362] [2024-10-31 22:10:37,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:37,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:38,047 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 22:10:38,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:38,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302596362] [2024-10-31 22:10:38,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302596362] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:38,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114277044] [2024-10-31 22:10:38,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:38,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:38,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:38,051 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:38,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:10:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:38,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-31 22:10:38,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:38,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-31 22:10:38,239 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 22:10:38,239 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:38,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-31 22:10:38,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-10-31 22:10:38,329 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 22:10:38,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114277044] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:38,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:38,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-10-31 22:10:38,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963024324] [2024-10-31 22:10:38,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:38,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:10:38,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:38,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:10:38,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:10:38,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-31 22:10:38,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 325 flow. Second operand has 13 states, 13 states have (on average 17.0) internal successors, (221), 13 states have internal predecessors, (221), 0 states have call successors, (0), 0 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 22:10:38,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:38,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-31 22:10:38,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:38,953 INFO L124 PetriNetUnfolderBase]: 698/1477 cut-off events. [2024-10-31 22:10:38,953 INFO L125 PetriNetUnfolderBase]: For 1407/1407 co-relation queries the response was YES. [2024-10-31 22:10:38,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4322 conditions, 1477 events. 698/1477 cut-off events. For 1407/1407 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9377 event pairs, 177 based on Foata normal form. 0/1182 useless extension candidates. Maximal degree in co-relation 4286. Up to 401 conditions per place. [2024-10-31 22:10:38,967 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 66 selfloop transitions, 15 changer transitions 0/95 dead transitions. [2024-10-31 22:10:38,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 95 transitions, 659 flow [2024-10-31 22:10:38,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:10:38,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:10:38,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-10-31 22:10:38,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2024-10-31 22:10:38,969 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 325 flow. Second operand 8 states and 178 transitions. [2024-10-31 22:10:38,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 95 transitions, 659 flow [2024-10-31 22:10:38,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 95 transitions, 649 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:10:38,974 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 341 flow [2024-10-31 22:10:38,975 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=341, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2024-10-31 22:10:38,977 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 27 predicate places. [2024-10-31 22:10:38,977 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 341 flow [2024-10-31 22:10:38,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.0) internal successors, (221), 13 states have internal predecessors, (221), 0 states have call successors, (0), 0 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 22:10:38,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:38,978 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:38,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:39,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:39,183 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:39,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:39,184 INFO L85 PathProgramCache]: Analyzing trace with hash -298597576, now seen corresponding path program 1 times [2024-10-31 22:10:39,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:39,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046339699] [2024-10-31 22:10:39,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:39,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:39,261 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 22:10:39,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:39,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046339699] [2024-10-31 22:10:39,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046339699] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:39,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:39,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:10:39,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842274156] [2024-10-31 22:10:39,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:39,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:10:39,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:39,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:10:39,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:10:39,285 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-31 22:10:39,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 341 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:39,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:39,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-31 22:10:39,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:39,691 INFO L124 PetriNetUnfolderBase]: 829/1604 cut-off events. [2024-10-31 22:10:39,691 INFO L125 PetriNetUnfolderBase]: For 2142/2142 co-relation queries the response was YES. [2024-10-31 22:10:39,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5058 conditions, 1604 events. 829/1604 cut-off events. For 2142/2142 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9770 event pairs, 424 based on Foata normal form. 60/1367 useless extension candidates. Maximal degree in co-relation 5022. Up to 993 conditions per place. [2024-10-31 22:10:39,707 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 81 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2024-10-31 22:10:39,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 97 transitions, 707 flow [2024-10-31 22:10:39,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:10:39,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:10:39,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-10-31 22:10:39,708 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5885416666666666 [2024-10-31 22:10:39,709 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 341 flow. Second operand 4 states and 113 transitions. [2024-10-31 22:10:39,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 97 transitions, 707 flow [2024-10-31 22:10:39,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 97 transitions, 688 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:10:39,714 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 349 flow [2024-10-31 22:10:39,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=349, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-10-31 22:10:39,715 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 27 predicate places. [2024-10-31 22:10:39,715 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 349 flow [2024-10-31 22:10:39,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:39,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:39,716 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:39,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:10:39,716 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:39,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:39,717 INFO L85 PathProgramCache]: Analyzing trace with hash 259391550, now seen corresponding path program 1 times [2024-10-31 22:10:39,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:39,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147274433] [2024-10-31 22:10:39,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:39,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:39,779 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 22:10:39,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:39,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147274433] [2024-10-31 22:10:39,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147274433] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:39,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:39,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:10:39,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664341921] [2024-10-31 22:10:39,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:39,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:10:39,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:39,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:10:39,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:10:39,791 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-31 22:10:39,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 349 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:39,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:39,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-31 22:10:39,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:40,166 INFO L124 PetriNetUnfolderBase]: 795/1514 cut-off events. [2024-10-31 22:10:40,166 INFO L125 PetriNetUnfolderBase]: For 2588/2588 co-relation queries the response was YES. [2024-10-31 22:10:40,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5167 conditions, 1514 events. 795/1514 cut-off events. For 2588/2588 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 9153 event pairs, 439 based on Foata normal form. 62/1304 useless extension candidates. Maximal degree in co-relation 5132. Up to 985 conditions per place. [2024-10-31 22:10:40,181 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 82 selfloop transitions, 4 changer transitions 0/98 dead transitions. [2024-10-31 22:10:40,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 98 transitions, 731 flow [2024-10-31 22:10:40,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:10:40,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:10:40,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-10-31 22:10:40,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-10-31 22:10:40,183 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 349 flow. Second operand 4 states and 111 transitions. [2024-10-31 22:10:40,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 98 transitions, 731 flow [2024-10-31 22:10:40,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 98 transitions, 713 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:10:40,190 INFO L231 Difference]: Finished difference. Result has 78 places, 64 transitions, 364 flow [2024-10-31 22:10:40,190 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=364, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2024-10-31 22:10:40,191 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 30 predicate places. [2024-10-31 22:10:40,191 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 364 flow [2024-10-31 22:10:40,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:40,191 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:40,191 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:40,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:10:40,192 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:40,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:40,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1908549138, now seen corresponding path program 1 times [2024-10-31 22:10:40,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:40,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368372271] [2024-10-31 22:10:40,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:40,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:40,310 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 22:10:40,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:40,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368372271] [2024-10-31 22:10:40,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368372271] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:40,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:40,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:10:40,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274460863] [2024-10-31 22:10:40,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:40,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:10:40,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:40,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:10:40,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:10:40,316 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-31 22:10:40,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 364 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:40,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:40,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-31 22:10:40,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:40,819 INFO L124 PetriNetUnfolderBase]: 1105/2102 cut-off events. [2024-10-31 22:10:40,819 INFO L125 PetriNetUnfolderBase]: For 3708/3708 co-relation queries the response was YES. [2024-10-31 22:10:40,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7389 conditions, 2102 events. 1105/2102 cut-off events. For 3708/3708 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12896 event pairs, 298 based on Foata normal form. 0/1950 useless extension candidates. Maximal degree in co-relation 7352. Up to 768 conditions per place. [2024-10-31 22:10:40,841 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 91 selfloop transitions, 18 changer transitions 0/119 dead transitions. [2024-10-31 22:10:40,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 119 transitions, 904 flow [2024-10-31 22:10:40,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:10:40,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:10:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-10-31 22:10:40,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-10-31 22:10:40,843 INFO L175 Difference]: Start difference. First operand has 78 places, 64 transitions, 364 flow. Second operand 5 states and 138 transitions. [2024-10-31 22:10:40,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 119 transitions, 904 flow [2024-10-31 22:10:40,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 119 transitions, 888 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:10:40,850 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 514 flow [2024-10-31 22:10:40,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=514, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2024-10-31 22:10:40,851 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 36 predicate places. [2024-10-31 22:10:40,851 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 514 flow [2024-10-31 22:10:40,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:40,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:40,851 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:40,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 22:10:40,852 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:40,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:40,852 INFO L85 PathProgramCache]: Analyzing trace with hash -317726813, now seen corresponding path program 1 times [2024-10-31 22:10:40,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:40,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686812189] [2024-10-31 22:10:40,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:40,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:40,957 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 22:10:40,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:40,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686812189] [2024-10-31 22:10:40,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686812189] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:40,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:40,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:10:40,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429917296] [2024-10-31 22:10:40,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:40,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:10:40,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:40,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:10:40,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:10:40,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-31 22:10:40,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 514 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:40,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:40,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-31 22:10:40,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:41,526 INFO L124 PetriNetUnfolderBase]: 1045/2065 cut-off events. [2024-10-31 22:10:41,526 INFO L125 PetriNetUnfolderBase]: For 6275/6275 co-relation queries the response was YES. [2024-10-31 22:10:41,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7947 conditions, 2065 events. 1045/2065 cut-off events. For 6275/6275 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 12909 event pairs, 270 based on Foata normal form. 70/2115 useless extension candidates. Maximal degree in co-relation 7905. Up to 692 conditions per place. [2024-10-31 22:10:41,554 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 93 selfloop transitions, 28 changer transitions 0/131 dead transitions. [2024-10-31 22:10:41,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 131 transitions, 1127 flow [2024-10-31 22:10:41,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:10:41,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:10:41,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-10-31 22:10:41,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5708333333333333 [2024-10-31 22:10:41,556 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 514 flow. Second operand 5 states and 137 transitions. [2024-10-31 22:10:41,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 131 transitions, 1127 flow [2024-10-31 22:10:41,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 131 transitions, 1127 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:10:41,569 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 793 flow [2024-10-31 22:10:41,569 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=793, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2024-10-31 22:10:41,571 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 44 predicate places. [2024-10-31 22:10:41,571 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 793 flow [2024-10-31 22:10:41,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:41,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:41,572 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:41,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 22:10:41,573 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:41,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:41,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1476180032, now seen corresponding path program 1 times [2024-10-31 22:10:41,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:41,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909375586] [2024-10-31 22:10:41,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:41,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:41,750 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 22:10:41,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:41,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909375586] [2024-10-31 22:10:41,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909375586] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:41,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:41,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:10:41,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848611163] [2024-10-31 22:10:41,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:41,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:10:41,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:41,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:10:41,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:10:41,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-31 22:10:41,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 793 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:41,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:41,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-31 22:10:41,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:42,372 INFO L124 PetriNetUnfolderBase]: 915/1847 cut-off events. [2024-10-31 22:10:42,372 INFO L125 PetriNetUnfolderBase]: For 8505/8505 co-relation queries the response was YES. [2024-10-31 22:10:42,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7499 conditions, 1847 events. 915/1847 cut-off events. For 8505/8505 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11345 event pairs, 180 based on Foata normal form. 60/1865 useless extension candidates. Maximal degree in co-relation 7451. Up to 634 conditions per place. [2024-10-31 22:10:42,400 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 100 selfloop transitions, 16 changer transitions 0/126 dead transitions. [2024-10-31 22:10:42,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 126 transitions, 1204 flow [2024-10-31 22:10:42,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:10:42,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:10:42,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-10-31 22:10:42,401 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-10-31 22:10:42,401 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 793 flow. Second operand 5 states and 134 transitions. [2024-10-31 22:10:42,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 126 transitions, 1204 flow [2024-10-31 22:10:42,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 126 transitions, 1177 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-31 22:10:42,422 INFO L231 Difference]: Finished difference. Result has 93 places, 83 transitions, 673 flow [2024-10-31 22:10:42,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=673, PETRI_PLACES=93, PETRI_TRANSITIONS=83} [2024-10-31 22:10:42,423 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 45 predicate places. [2024-10-31 22:10:42,424 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 83 transitions, 673 flow [2024-10-31 22:10:42,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:42,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:42,424 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:42,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-31 22:10:42,424 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:42,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:42,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1476180031, now seen corresponding path program 1 times [2024-10-31 22:10:42,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:42,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123497028] [2024-10-31 22:10:42,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:42,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:42,617 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 22:10:42,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:42,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123497028] [2024-10-31 22:10:42,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123497028] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:42,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:42,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:10:42,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174528705] [2024-10-31 22:10:42,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:42,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:10:42,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:42,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:10:42,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:10:42,624 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-31 22:10:42,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 83 transitions, 673 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:42,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:42,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-31 22:10:42,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:43,035 INFO L124 PetriNetUnfolderBase]: 789/1572 cut-off events. [2024-10-31 22:10:43,036 INFO L125 PetriNetUnfolderBase]: For 6406/6409 co-relation queries the response was YES. [2024-10-31 22:10:43,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6409 conditions, 1572 events. 789/1572 cut-off events. For 6406/6409 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9042 event pairs, 135 based on Foata normal form. 59/1604 useless extension candidates. Maximal degree in co-relation 6360. Up to 466 conditions per place. [2024-10-31 22:10:43,058 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 86 selfloop transitions, 15 changer transitions 0/111 dead transitions. [2024-10-31 22:10:43,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 111 transitions, 1004 flow [2024-10-31 22:10:43,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:10:43,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:10:43,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-10-31 22:10:43,060 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5458333333333333 [2024-10-31 22:10:43,060 INFO L175 Difference]: Start difference. First operand has 93 places, 83 transitions, 673 flow. Second operand 5 states and 131 transitions. [2024-10-31 22:10:43,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 111 transitions, 1004 flow [2024-10-31 22:10:43,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 111 transitions, 908 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-10-31 22:10:43,075 INFO L231 Difference]: Finished difference. Result has 87 places, 70 transitions, 487 flow [2024-10-31 22:10:43,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=487, PETRI_PLACES=87, PETRI_TRANSITIONS=70} [2024-10-31 22:10:43,078 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 39 predicate places. [2024-10-31 22:10:43,078 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 70 transitions, 487 flow [2024-10-31 22:10:43,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:43,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:43,081 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:43,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-31 22:10:43,081 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:43,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:43,082 INFO L85 PathProgramCache]: Analyzing trace with hash -642493439, now seen corresponding path program 1 times [2024-10-31 22:10:43,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:43,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101775520] [2024-10-31 22:10:43,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:43,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:43,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:43,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:43,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101775520] [2024-10-31 22:10:43,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101775520] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:43,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619995494] [2024-10-31 22:10:43,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:43,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:43,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:43,281 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:43,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 22:10:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:43,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 22:10:43,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:43,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:43,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:43,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:43,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619995494] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:43,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:43,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-31 22:10:43,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734101830] [2024-10-31 22:10:43,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:43,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-31 22:10:43,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:43,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-31 22:10:43,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-10-31 22:10:43,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-10-31 22:10:43,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 70 transitions, 487 flow. Second operand has 20 states, 20 states have (on average 11.55) internal successors, (231), 20 states have internal predecessors, (231), 0 states have call successors, (0), 0 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 22:10:43,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:43,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-10-31 22:10:43,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:44,809 INFO L124 PetriNetUnfolderBase]: 1308/2588 cut-off events. [2024-10-31 22:10:44,809 INFO L125 PetriNetUnfolderBase]: For 7794/7829 co-relation queries the response was YES. [2024-10-31 22:10:44,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9858 conditions, 2588 events. 1308/2588 cut-off events. For 7794/7829 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 16209 event pairs, 689 based on Foata normal form. 75/2591 useless extension candidates. Maximal degree in co-relation 9812. Up to 1507 conditions per place. [2024-10-31 22:10:44,838 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 110 selfloop transitions, 17 changer transitions 8/151 dead transitions. [2024-10-31 22:10:44,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 151 transitions, 1323 flow [2024-10-31 22:10:44,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:10:44,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:10:44,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-10-31 22:10:44,840 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37916666666666665 [2024-10-31 22:10:44,841 INFO L175 Difference]: Start difference. First operand has 87 places, 70 transitions, 487 flow. Second operand 10 states and 182 transitions. [2024-10-31 22:10:44,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 151 transitions, 1323 flow [2024-10-31 22:10:44,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 151 transitions, 1233 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:10:44,855 INFO L231 Difference]: Finished difference. Result has 96 places, 76 transitions, 565 flow [2024-10-31 22:10:44,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=565, PETRI_PLACES=96, PETRI_TRANSITIONS=76} [2024-10-31 22:10:44,855 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 48 predicate places. [2024-10-31 22:10:44,856 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 76 transitions, 565 flow [2024-10-31 22:10:44,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.55) internal successors, (231), 20 states have internal predecessors, (231), 0 states have call successors, (0), 0 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 22:10:44,856 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:44,856 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-31 22:10:44,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-31 22:10:45,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-31 22:10:45,057 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:45,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:45,057 INFO L85 PathProgramCache]: Analyzing trace with hash 339443379, now seen corresponding path program 2 times [2024-10-31 22:10:45,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:45,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082710035] [2024-10-31 22:10:45,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:45,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:45,205 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 22:10:45,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:45,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082710035] [2024-10-31 22:10:45,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082710035] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:45,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829825169] [2024-10-31 22:10:45,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:10:45,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:45,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:45,208 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:45,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-31 22:10:45,302 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:10:45,302 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:10:45,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:10:45,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:45,369 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 22:10:45,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:45,412 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 22:10:45,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829825169] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:45,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:45,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-31 22:10:45,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510325233] [2024-10-31 22:10:45,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:45,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 22:10:45,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:45,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 22:10:45,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:10:45,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-31 22:10:45,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 76 transitions, 565 flow. Second operand has 14 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 0 states have call successors, (0), 0 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 22:10:45,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:45,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-31 22:10:45,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:46,168 INFO L124 PetriNetUnfolderBase]: 1049/2255 cut-off events. [2024-10-31 22:10:46,168 INFO L125 PetriNetUnfolderBase]: For 8189/8248 co-relation queries the response was YES. [2024-10-31 22:10:46,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8855 conditions, 2255 events. 1049/2255 cut-off events. For 8189/8248 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 15009 event pairs, 666 based on Foata normal form. 29/2184 useless extension candidates. Maximal degree in co-relation 8790. Up to 1722 conditions per place. [2024-10-31 22:10:46,198 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 41 selfloop transitions, 18 changer transitions 0/78 dead transitions. [2024-10-31 22:10:46,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 78 transitions, 699 flow [2024-10-31 22:10:46,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:10:46,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-31 22:10:46,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 221 transitions. [2024-10-31 22:10:46,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3288690476190476 [2024-10-31 22:10:46,201 INFO L175 Difference]: Start difference. First operand has 96 places, 76 transitions, 565 flow. Second operand 14 states and 221 transitions. [2024-10-31 22:10:46,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 78 transitions, 699 flow [2024-10-31 22:10:46,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 78 transitions, 668 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-10-31 22:10:46,216 INFO L231 Difference]: Finished difference. Result has 100 places, 78 transitions, 586 flow [2024-10-31 22:10:46,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=586, PETRI_PLACES=100, PETRI_TRANSITIONS=78} [2024-10-31 22:10:46,218 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 52 predicate places. [2024-10-31 22:10:46,218 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 78 transitions, 586 flow [2024-10-31 22:10:46,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 0 states have call successors, (0), 0 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 22:10:46,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:46,219 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:46,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-31 22:10:46,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-31 22:10:46,420 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:46,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:46,420 INFO L85 PathProgramCache]: Analyzing trace with hash 888139595, now seen corresponding path program 1 times [2024-10-31 22:10:46,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:46,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690534535] [2024-10-31 22:10:46,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:46,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:46,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:46,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690534535] [2024-10-31 22:10:46,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690534535] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:46,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083963979] [2024-10-31 22:10:46,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:46,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:46,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:46,622 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:46,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-31 22:10:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:46,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 22:10:46,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:46,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:46,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:47,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:47,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083963979] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:47,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:47,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-31 22:10:47,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968098299] [2024-10-31 22:10:47,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:47,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-31 22:10:47,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:47,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-31 22:10:47,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-10-31 22:10:47,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-10-31 22:10:47,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 78 transitions, 586 flow. Second operand has 20 states, 20 states have (on average 11.65) internal successors, (233), 20 states have internal predecessors, (233), 0 states have call successors, (0), 0 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 22:10:47,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:47,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-10-31 22:10:47,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:47,989 INFO L124 PetriNetUnfolderBase]: 1117/2197 cut-off events. [2024-10-31 22:10:47,989 INFO L125 PetriNetUnfolderBase]: For 7221/7297 co-relation queries the response was YES. [2024-10-31 22:10:48,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8587 conditions, 2197 events. 1117/2197 cut-off events. For 7221/7297 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 13128 event pairs, 666 based on Foata normal form. 47/2233 useless extension candidates. Maximal degree in co-relation 6678. Up to 1486 conditions per place. [2024-10-31 22:10:48,014 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 43 selfloop transitions, 12 changer transitions 51/122 dead transitions. [2024-10-31 22:10:48,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 122 transitions, 1136 flow [2024-10-31 22:10:48,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:10:48,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:10:48,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-10-31 22:10:48,016 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-10-31 22:10:48,016 INFO L175 Difference]: Start difference. First operand has 100 places, 78 transitions, 586 flow. Second operand 10 states and 170 transitions. [2024-10-31 22:10:48,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 122 transitions, 1136 flow [2024-10-31 22:10:48,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 122 transitions, 1060 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-10-31 22:10:48,032 INFO L231 Difference]: Finished difference. Result has 100 places, 71 transitions, 469 flow [2024-10-31 22:10:48,032 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=469, PETRI_PLACES=100, PETRI_TRANSITIONS=71} [2024-10-31 22:10:48,033 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 52 predicate places. [2024-10-31 22:10:48,033 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 71 transitions, 469 flow [2024-10-31 22:10:48,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.65) internal successors, (233), 20 states have internal predecessors, (233), 0 states have call successors, (0), 0 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 22:10:48,033 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:48,034 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:48,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:48,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:48,239 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:48,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:48,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1628000086, now seen corresponding path program 2 times [2024-10-31 22:10:48,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:48,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050146719] [2024-10-31 22:10:48,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:48,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:48,623 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:48,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:48,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050146719] [2024-10-31 22:10:48,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050146719] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:48,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907780286] [2024-10-31 22:10:48,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:10:48,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:48,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:48,628 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:48,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-31 22:10:48,737 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:10:48,737 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:10:48,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-31 22:10:48,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:48,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-31 22:10:48,872 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:48,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:49,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-31 22:10:49,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-10-31 22:10:49,069 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:49,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907780286] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:49,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:49,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-31 22:10:49,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118374520] [2024-10-31 22:10:49,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:49,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-31 22:10:49,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:49,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-31 22:10:49,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-10-31 22:10:49,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-10-31 22:10:49,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 71 transitions, 469 flow. Second operand has 19 states, 19 states have (on average 12.368421052631579) internal successors, (235), 19 states have internal predecessors, (235), 0 states have call successors, (0), 0 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 22:10:49,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:49,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-10-31 22:10:49,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:50,287 INFO L124 PetriNetUnfolderBase]: 1265/2564 cut-off events. [2024-10-31 22:10:50,287 INFO L125 PetriNetUnfolderBase]: For 7917/8003 co-relation queries the response was YES. [2024-10-31 22:10:50,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9720 conditions, 2564 events. 1265/2564 cut-off events. For 7917/8003 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 16046 event pairs, 257 based on Foata normal form. 50/2597 useless extension candidates. Maximal degree in co-relation 9624. Up to 658 conditions per place. [2024-10-31 22:10:50,317 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 141 selfloop transitions, 22 changer transitions 0/180 dead transitions. [2024-10-31 22:10:50,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 180 transitions, 1547 flow [2024-10-31 22:10:50,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:10:50,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-31 22:10:50,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 255 transitions. [2024-10-31 22:10:50,321 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3794642857142857 [2024-10-31 22:10:50,321 INFO L175 Difference]: Start difference. First operand has 100 places, 71 transitions, 469 flow. Second operand 14 states and 255 transitions. [2024-10-31 22:10:50,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 180 transitions, 1547 flow [2024-10-31 22:10:50,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 180 transitions, 1423 flow, removed 50 selfloop flow, removed 13 redundant places. [2024-10-31 22:10:50,338 INFO L231 Difference]: Finished difference. Result has 94 places, 76 transitions, 524 flow [2024-10-31 22:10:50,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=524, PETRI_PLACES=94, PETRI_TRANSITIONS=76} [2024-10-31 22:10:50,338 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 46 predicate places. [2024-10-31 22:10:50,339 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 76 transitions, 524 flow [2024-10-31 22:10:50,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.368421052631579) internal successors, (235), 19 states have internal predecessors, (235), 0 states have call successors, (0), 0 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 22:10:50,339 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:50,339 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:50,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:50,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:50,543 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:50,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:50,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1628000085, now seen corresponding path program 1 times [2024-10-31 22:10:50,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:50,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712588674] [2024-10-31 22:10:50,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:50,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:50,964 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:50,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:50,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712588674] [2024-10-31 22:10:50,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712588674] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:50,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664580823] [2024-10-31 22:10:50,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:50,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:50,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:50,967 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:50,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-31 22:10:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:51,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-31 22:10:51,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:51,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-31 22:10:51,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:51,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:51,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-31 22:10:51,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-10-31 22:10:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:51,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664580823] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:51,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:51,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-10-31 22:10:51,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978211990] [2024-10-31 22:10:51,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:51,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-31 22:10:51,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:51,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-31 22:10:51,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-10-31 22:10:51,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-10-31 22:10:51,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 76 transitions, 524 flow. Second operand has 23 states, 23 states have (on average 12.434782608695652) internal successors, (286), 23 states have internal predecessors, (286), 0 states have call successors, (0), 0 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 22:10:51,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:51,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-10-31 22:10:51,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:52,898 INFO L124 PetriNetUnfolderBase]: 1206/2465 cut-off events. [2024-10-31 22:10:52,898 INFO L125 PetriNetUnfolderBase]: For 8622/8636 co-relation queries the response was YES. [2024-10-31 22:10:52,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9390 conditions, 2465 events. 1206/2465 cut-off events. For 8622/8636 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 15357 event pairs, 257 based on Foata normal form. 50/2498 useless extension candidates. Maximal degree in co-relation 8337. Up to 559 conditions per place. [2024-10-31 22:10:52,920 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 140 selfloop transitions, 22 changer transitions 0/179 dead transitions. [2024-10-31 22:10:52,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 179 transitions, 1482 flow [2024-10-31 22:10:52,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:10:52,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-31 22:10:52,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 254 transitions. [2024-10-31 22:10:52,922 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37797619047619047 [2024-10-31 22:10:52,923 INFO L175 Difference]: Start difference. First operand has 94 places, 76 transitions, 524 flow. Second operand 14 states and 254 transitions. [2024-10-31 22:10:52,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 179 transitions, 1482 flow [2024-10-31 22:10:52,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 179 transitions, 1441 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-10-31 22:10:52,936 INFO L231 Difference]: Finished difference. Result has 98 places, 75 transitions, 519 flow [2024-10-31 22:10:52,936 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=519, PETRI_PLACES=98, PETRI_TRANSITIONS=75} [2024-10-31 22:10:52,937 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 50 predicate places. [2024-10-31 22:10:52,937 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 75 transitions, 519 flow [2024-10-31 22:10:52,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.434782608695652) internal successors, (286), 23 states have internal predecessors, (286), 0 states have call successors, (0), 0 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 22:10:52,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:52,938 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:52,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-31 22:10:53,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:53,140 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 22:10:53,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:53,140 INFO L85 PathProgramCache]: Analyzing trace with hash 989030752, now seen corresponding path program 2 times [2024-10-31 22:10:53,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:53,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771467963] [2024-10-31 22:10:53,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:53,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:53,594 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:53,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:53,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771467963] [2024-10-31 22:10:53,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771467963] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:53,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784522906] [2024-10-31 22:10:53,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:10:53,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:53,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:53,598 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:53,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15dc602f-415f-4cfc-a671-ce75d2895d37/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-31 22:10:53,724 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:10:53,724 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:10:53,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-31 22:10:53,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:53,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-31 22:10:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:53,930 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:54,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-31 22:10:54,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-10-31 22:10:54,110 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:54,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784522906] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:54,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:54,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-10-31 22:10:54,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704366099] [2024-10-31 22:10:54,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:54,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-31 22:10:54,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:54,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-31 22:10:54,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-10-31 22:10:54,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-10-31 22:10:54,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 75 transitions, 519 flow. Second operand has 23 states, 23 states have (on average 12.695652173913043) internal successors, (292), 23 states have internal predecessors, (292), 0 states have call successors, (0), 0 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 22:10:54,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:54,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-10-31 22:10:54,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand