./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 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_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX --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 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:56:45,413 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:56:45,513 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 17:56:45,521 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:56:45,521 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:56:45,560 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:56:45,563 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:56:45,564 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:56:45,565 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:56:45,567 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:56:45,567 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:56:45,568 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:56:45,570 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:56:45,570 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:56:45,572 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:56:45,573 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:56:45,574 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:56:45,574 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:56:45,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:56:45,578 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:56:45,579 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:56:45,580 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:56:45,580 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:56:45,581 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:56:45,581 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:56:45,581 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 17:56:45,582 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:56:45,582 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:56:45,582 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:56:45,583 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:56:45,583 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:56:45,587 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:56:45,588 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:56:45,588 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:56:45,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:56:45,589 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:56:45,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:56:45,590 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:56:45,590 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:56:45,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:56:45,591 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:56:45,592 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:56:45,592 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:56:45,592 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:56:45,593 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_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 [2024-11-08 17:56:45,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:56:45,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:56:45,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:56:45,976 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:56:45,977 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:56:45,978 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c Unable to find full path for "g++" [2024-11-08 17:56:48,124 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:56:48,420 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:56:48,421 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2024-11-08 17:56:48,430 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/data/91cae5c3b/4439e5717c9146bcb656b3073e541e6f/FLAGf7861c6e2 [2024-11-08 17:56:48,445 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/data/91cae5c3b/4439e5717c9146bcb656b3073e541e6f [2024-11-08 17:56:48,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:56:48,450 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:56:48,451 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:56:48,451 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:56:48,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:56:48,458 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:56:48" (1/1) ... [2024-11-08 17:56:48,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25a20978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:48, skipping insertion in model container [2024-11-08 17:56:48,460 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:56:48" (1/1) ... [2024-11-08 17:56:48,489 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:56:48,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:56:48,815 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:56:48,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:56:48,895 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:56:48,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:48 WrapperNode [2024-11-08 17:56:48,896 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:56:48,897 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:56:48,897 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:56:48,897 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:56:48,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:48" (1/1) ... [2024-11-08 17:56:48,919 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:48" (1/1) ... [2024-11-08 17:56:48,973 INFO L138 Inliner]: procedures = 24, calls = 54, calls flagged for inlining = 21, calls inlined = 25, statements flattened = 355 [2024-11-08 17:56:48,973 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:56:48,975 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:56:48,976 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:56:48,976 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:56:48,988 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:48" (1/1) ... [2024-11-08 17:56:48,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:48" (1/1) ... [2024-11-08 17:56:48,992 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:48" (1/1) ... [2024-11-08 17:56:49,011 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-08 17:56:49,012 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:48" (1/1) ... [2024-11-08 17:56:49,012 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:48" (1/1) ... [2024-11-08 17:56:49,024 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:48" (1/1) ... [2024-11-08 17:56:49,029 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:48" (1/1) ... [2024-11-08 17:56:49,031 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:48" (1/1) ... [2024-11-08 17:56:49,034 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:48" (1/1) ... [2024-11-08 17:56:49,039 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:56:49,040 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:56:49,040 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:56:49,040 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:56:49,041 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:48" (1/1) ... [2024-11-08 17:56:49,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:56:49,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:56:49,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:56:49,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:56:49,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:56:49,118 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:56:49,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:56:49,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:56:49,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:56:49,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 17:56:49,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 17:56:49,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:56:49,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:56:49,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:56:49,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:56:49,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 17:56:49,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 17:56:49,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:56:49,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:56:49,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:56:49,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:56:49,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:56:49,125 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:56:49,288 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:56:49,291 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:56:50,104 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:56:50,105 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:56:50,678 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:56:50,678 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-08 17:56:50,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:56:50 BoogieIcfgContainer [2024-11-08 17:56:50,679 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:56:50,681 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:56:50,682 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:56:50,686 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:56:50,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:56:48" (1/3) ... [2024-11-08 17:56:50,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55622fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:56:50, skipping insertion in model container [2024-11-08 17:56:50,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:48" (2/3) ... [2024-11-08 17:56:50,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55622fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:56:50, skipping insertion in model container [2024-11-08 17:56:50,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:56:50" (3/3) ... [2024-11-08 17:56:50,689 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2024-11-08 17:56:50,713 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:56:50,714 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-11-08 17:56:50,714 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:56:50,839 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 17:56:50,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 96 transitions, 213 flow [2024-11-08 17:56:50,979 INFO L124 PetriNetUnfolderBase]: 20/93 cut-off events. [2024-11-08 17:56:50,979 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:56:50,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 93 events. 20/93 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 271 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2024-11-08 17:56:50,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 96 transitions, 213 flow [2024-11-08 17:56:50,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 91 transitions, 197 flow [2024-11-08 17:56:51,001 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:56:51,008 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;@1b690931, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:56:51,008 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-11-08 17:56:51,013 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:56:51,013 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2024-11-08 17:56:51,013 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:56:51,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:56:51,014 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 17:56:51,015 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-08 17:56:51,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:56:51,021 INFO L85 PathProgramCache]: Analyzing trace with hash 33449322, now seen corresponding path program 1 times [2024-11-08 17:56:51,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:56:51,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949243346] [2024-11-08 17:56:51,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:56:51,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:56:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:56:51,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:56:51,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:56:51,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949243346] [2024-11-08 17:56:51,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949243346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:56:51,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:56:51,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:56:51,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258121513] [2024-11-08 17:56:51,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:56:51,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:56:51,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:56:51,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:56:51,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:56:51,506 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 96 [2024-11-08 17:56:51,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 91 transitions, 197 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:56:51,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:56:51,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 96 [2024-11-08 17:56:51,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:56:52,711 INFO L124 PetriNetUnfolderBase]: 3367/4939 cut-off events. [2024-11-08 17:56:52,711 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-11-08 17:56:52,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9461 conditions, 4939 events. 3367/4939 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 27536 event pairs, 2182 based on Foata normal form. 3/3124 useless extension candidates. Maximal degree in co-relation 8970. Up to 4308 conditions per place. [2024-11-08 17:56:52,777 INFO L140 encePairwiseOnDemand]: 69/96 looper letters, 51 selfloop transitions, 10 changer transitions 0/89 dead transitions. [2024-11-08 17:56:52,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 89 transitions, 315 flow [2024-11-08 17:56:52,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:56:52,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:56:52,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2024-11-08 17:56:52,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2024-11-08 17:56:52,799 INFO L175 Difference]: Start difference. First operand has 81 places, 91 transitions, 197 flow. Second operand 4 states and 202 transitions. [2024-11-08 17:56:52,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 89 transitions, 315 flow [2024-11-08 17:56:52,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 89 transitions, 306 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-08 17:56:52,821 INFO L231 Difference]: Finished difference. Result has 74 places, 89 transitions, 254 flow [2024-11-08 17:56:52,825 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=74, PETRI_TRANSITIONS=89} [2024-11-08 17:56:52,833 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -7 predicate places. [2024-11-08 17:56:52,833 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 89 transitions, 254 flow [2024-11-08 17:56:52,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:56:52,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:56:52,834 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-08 17:56:52,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:56:52,836 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-08 17:56:52,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:56:52,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1781121101, now seen corresponding path program 1 times [2024-11-08 17:56:52,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:56:52,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082204890] [2024-11-08 17:56:52,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:56:52,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:56:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:56:53,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:56:53,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:56:53,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082204890] [2024-11-08 17:56:53,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082204890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:56:53,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895372072] [2024-11-08 17:56:53,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:56:53,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:56:53,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:56:53,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:56:53,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:56:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:56:53,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:56:53,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:56:53,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:56:53,319 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:56:53,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895372072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:56:53,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:56:53,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 17:56:53,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146167823] [2024-11-08 17:56:53,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:56:53,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:56:53,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:56:53,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:56:53,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:56:53,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 96 [2024-11-08 17:56:53,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 89 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:56:53,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:56:53,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 96 [2024-11-08 17:56:53,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:56:54,338 INFO L124 PetriNetUnfolderBase]: 3367/4936 cut-off events. [2024-11-08 17:56:54,338 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-08 17:56:54,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9421 conditions, 4936 events. 3367/4936 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 27533 event pairs, 2182 based on Foata normal form. 3/3121 useless extension candidates. Maximal degree in co-relation 9339. Up to 4293 conditions per place. [2024-11-08 17:56:54,385 INFO L140 encePairwiseOnDemand]: 83/96 looper letters, 41 selfloop transitions, 17 changer transitions 0/86 dead transitions. [2024-11-08 17:56:54,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 86 transitions, 358 flow [2024-11-08 17:56:54,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:56:54,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:56:54,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 247 transitions. [2024-11-08 17:56:54,391 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4288194444444444 [2024-11-08 17:56:54,391 INFO L175 Difference]: Start difference. First operand has 74 places, 89 transitions, 254 flow. Second operand 6 states and 247 transitions. [2024-11-08 17:56:54,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 86 transitions, 358 flow [2024-11-08 17:56:54,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 86 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:56:54,400 INFO L231 Difference]: Finished difference. Result has 76 places, 86 transitions, 276 flow [2024-11-08 17:56:54,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=76, PETRI_TRANSITIONS=86} [2024-11-08 17:56:54,401 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -5 predicate places. [2024-11-08 17:56:54,401 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 86 transitions, 276 flow [2024-11-08 17:56:54,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:56:54,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:56:54,403 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-08 17:56:54,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 17:56:54,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:56:54,605 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-08 17:56:54,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:56:54,606 INFO L85 PathProgramCache]: Analyzing trace with hash -619819591, now seen corresponding path program 1 times [2024-11-08 17:56:54,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:56:54,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440980219] [2024-11-08 17:56:54,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:56:54,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:56:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:56:54,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:56:54,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:56:54,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440980219] [2024-11-08 17:56:54,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440980219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:56:54,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785332402] [2024-11-08 17:56:54,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:56:54,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:56:54,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:56:54,862 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:56:54,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:56:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:56:54,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:56:54,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:56:55,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:56:55,022 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:56:55,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:56:55,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785332402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:56:55,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:56:55,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-08 17:56:55,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569739551] [2024-11-08 17:56:55,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:56:55,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:56:55,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:56:55,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:56:55,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:56:55,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 96 [2024-11-08 17:56:55,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 86 transitions, 276 flow. Second operand has 12 states, 12 states have (on average 32.083333333333336) internal successors, (385), 12 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:56:55,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:56:55,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 96 [2024-11-08 17:56:55,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:56:56,476 INFO L124 PetriNetUnfolderBase]: 3385/4999 cut-off events. [2024-11-08 17:56:56,477 INFO L125 PetriNetUnfolderBase]: For 230/230 co-relation queries the response was YES. [2024-11-08 17:56:56,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9589 conditions, 4999 events. 3385/4999 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 28268 event pairs, 2182 based on Foata normal form. 9/3184 useless extension candidates. Maximal degree in co-relation 9341. Up to 4308 conditions per place. [2024-11-08 17:56:56,515 INFO L140 encePairwiseOnDemand]: 83/96 looper letters, 48 selfloop transitions, 37 changer transitions 0/113 dead transitions. [2024-11-08 17:56:56,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 113 transitions, 620 flow [2024-11-08 17:56:56,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:56:56,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 17:56:56,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 404 transitions. [2024-11-08 17:56:56,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-11-08 17:56:56,519 INFO L175 Difference]: Start difference. First operand has 76 places, 86 transitions, 276 flow. Second operand 10 states and 404 transitions. [2024-11-08 17:56:56,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 113 transitions, 620 flow [2024-11-08 17:56:56,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 113 transitions, 537 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-08 17:56:56,524 INFO L231 Difference]: Finished difference. Result has 83 places, 113 transitions, 491 flow [2024-11-08 17:56:56,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=491, PETRI_PLACES=83, PETRI_TRANSITIONS=113} [2024-11-08 17:56:56,525 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 2 predicate places. [2024-11-08 17:56:56,526 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 113 transitions, 491 flow [2024-11-08 17:56:56,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 32.083333333333336) internal successors, (385), 12 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:56:56,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:56:56,527 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:56:56,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 17:56:56,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:56:56,729 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-08 17:56:56,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:56:56,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2045641838, now seen corresponding path program 1 times [2024-11-08 17:56:56,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:56:56,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204884817] [2024-11-08 17:56:56,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:56:56,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:56:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:56:56,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:56:56,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:56:56,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204884817] [2024-11-08 17:56:56,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204884817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:56:56,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:56:56,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 17:56:56,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031623098] [2024-11-08 17:56:56,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:56:56,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:56:56,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:56:56,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:56:56,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:56:56,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 96 [2024-11-08 17:56:56,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 113 transitions, 491 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:56:56,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:56:56,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 96 [2024-11-08 17:56:56,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:56:58,352 INFO L124 PetriNetUnfolderBase]: 5846/8644 cut-off events. [2024-11-08 17:56:58,352 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-11-08 17:56:58,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16530 conditions, 8644 events. 5846/8644 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 51856 event pairs, 1884 based on Foata normal form. 214/5815 useless extension candidates. Maximal degree in co-relation 16423. Up to 4473 conditions per place. [2024-11-08 17:56:58,440 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 108 selfloop transitions, 3 changer transitions 0/142 dead transitions. [2024-11-08 17:56:58,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 142 transitions, 775 flow [2024-11-08 17:56:58,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:56:58,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:56:58,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 190 transitions. [2024-11-08 17:56:58,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6597222222222222 [2024-11-08 17:56:58,443 INFO L175 Difference]: Start difference. First operand has 83 places, 113 transitions, 491 flow. Second operand 3 states and 190 transitions. [2024-11-08 17:56:58,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 142 transitions, 775 flow [2024-11-08 17:56:58,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 142 transitions, 738 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-08 17:56:58,458 INFO L231 Difference]: Finished difference. Result has 84 places, 115 transitions, 479 flow [2024-11-08 17:56:58,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=479, PETRI_PLACES=84, PETRI_TRANSITIONS=115} [2024-11-08 17:56:58,460 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 3 predicate places. [2024-11-08 17:56:58,460 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 115 transitions, 479 flow [2024-11-08 17:56:58,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:56:58,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:56:58,461 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:56:58,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:56:58,462 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-08 17:56:58,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:56:58,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1009610322, now seen corresponding path program 1 times [2024-11-08 17:56:58,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:56:58,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941946619] [2024-11-08 17:56:58,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:56:58,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:56:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:56:58,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:56:58,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:56:58,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941946619] [2024-11-08 17:56:58,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941946619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:56:58,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:56:58,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:56:58,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278652737] [2024-11-08 17:56:58,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:56:58,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:56:58,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:56:58,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:56:58,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:56:58,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 96 [2024-11-08 17:56:58,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 115 transitions, 479 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:56:58,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:56:58,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 96 [2024-11-08 17:56:58,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:00,405 INFO L124 PetriNetUnfolderBase]: 8504/12363 cut-off events. [2024-11-08 17:57:00,405 INFO L125 PetriNetUnfolderBase]: For 1069/1081 co-relation queries the response was YES. [2024-11-08 17:57:00,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25473 conditions, 12363 events. 8504/12363 cut-off events. For 1069/1081 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 70287 event pairs, 3181 based on Foata normal form. 0/9402 useless extension candidates. Maximal degree in co-relation 25369. Up to 5816 conditions per place. [2024-11-08 17:57:00,515 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 111 selfloop transitions, 4 changer transitions 0/141 dead transitions. [2024-11-08 17:57:00,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 141 transitions, 769 flow [2024-11-08 17:57:00,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:57:00,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:57:00,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2024-11-08 17:57:00,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-08 17:57:00,518 INFO L175 Difference]: Start difference. First operand has 84 places, 115 transitions, 479 flow. Second operand 3 states and 174 transitions. [2024-11-08 17:57:00,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 141 transitions, 769 flow [2024-11-08 17:57:00,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 141 transitions, 766 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:57:00,526 INFO L231 Difference]: Finished difference. Result has 87 places, 116 transitions, 498 flow [2024-11-08 17:57:00,526 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=498, PETRI_PLACES=87, PETRI_TRANSITIONS=116} [2024-11-08 17:57:00,527 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 6 predicate places. [2024-11-08 17:57:00,527 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 116 transitions, 498 flow [2024-11-08 17:57:00,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:00,528 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:00,528 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:00,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:57:00,529 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-08 17:57:00,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:00,530 INFO L85 PathProgramCache]: Analyzing trace with hash 421164069, now seen corresponding path program 1 times [2024-11-08 17:57:00,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:00,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033042964] [2024-11-08 17:57:00,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:00,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:00,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:00,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:00,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033042964] [2024-11-08 17:57:00,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033042964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:00,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:00,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:57:00,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022159587] [2024-11-08 17:57:00,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:00,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:57:00,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:00,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:57:00,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:57:00,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 96 [2024-11-08 17:57:00,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 116 transitions, 498 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:00,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:00,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 96 [2024-11-08 17:57:00,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:02,726 INFO L124 PetriNetUnfolderBase]: 10429/15936 cut-off events. [2024-11-08 17:57:02,726 INFO L125 PetriNetUnfolderBase]: For 3359/3467 co-relation queries the response was YES. [2024-11-08 17:57:02,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33913 conditions, 15936 events. 10429/15936 cut-off events. For 3359/3467 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 99310 event pairs, 4177 based on Foata normal form. 320/12594 useless extension candidates. Maximal degree in co-relation 33808. Up to 7196 conditions per place. [2024-11-08 17:57:02,837 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 113 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2024-11-08 17:57:02,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 147 transitions, 814 flow [2024-11-08 17:57:02,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:57:02,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:57:02,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 190 transitions. [2024-11-08 17:57:02,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6597222222222222 [2024-11-08 17:57:02,839 INFO L175 Difference]: Start difference. First operand has 87 places, 116 transitions, 498 flow. Second operand 3 states and 190 transitions. [2024-11-08 17:57:02,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 147 transitions, 814 flow [2024-11-08 17:57:02,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 147 transitions, 802 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:57:02,850 INFO L231 Difference]: Finished difference. Result has 88 places, 117 transitions, 504 flow [2024-11-08 17:57:02,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=504, PETRI_PLACES=88, PETRI_TRANSITIONS=117} [2024-11-08 17:57:02,851 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 7 predicate places. [2024-11-08 17:57:02,851 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 117 transitions, 504 flow [2024-11-08 17:57:02,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:02,852 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:02,852 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:02,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:57:02,853 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-08 17:57:02,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:02,853 INFO L85 PathProgramCache]: Analyzing trace with hash 171186416, now seen corresponding path program 1 times [2024-11-08 17:57:02,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:02,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173137402] [2024-11-08 17:57:02,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:02,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:02,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:02,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173137402] [2024-11-08 17:57:02,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173137402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:02,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:02,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:57:02,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605504401] [2024-11-08 17:57:02,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:02,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:57:02,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:02,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:57:02,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:57:02,929 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2024-11-08 17:57:02,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 117 transitions, 504 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:02,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:02,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2024-11-08 17:57:02,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:05,496 INFO L124 PetriNetUnfolderBase]: 14078/20687 cut-off events. [2024-11-08 17:57:05,496 INFO L125 PetriNetUnfolderBase]: For 3322/3546 co-relation queries the response was YES. [2024-11-08 17:57:05,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43529 conditions, 20687 events. 14078/20687 cut-off events. For 3322/3546 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 124354 event pairs, 6937 based on Foata normal form. 0/16033 useless extension candidates. Maximal degree in co-relation 43423. Up to 12185 conditions per place. [2024-11-08 17:57:05,609 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 111 selfloop transitions, 4 changer transitions 0/144 dead transitions. [2024-11-08 17:57:05,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 144 transitions, 804 flow [2024-11-08 17:57:05,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:57:05,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:57:05,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2024-11-08 17:57:05,611 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-08 17:57:05,612 INFO L175 Difference]: Start difference. First operand has 88 places, 117 transitions, 504 flow. Second operand 3 states and 180 transitions. [2024-11-08 17:57:05,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 144 transitions, 804 flow [2024-11-08 17:57:05,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 144 transitions, 802 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:57:05,620 INFO L231 Difference]: Finished difference. Result has 91 places, 117 transitions, 520 flow [2024-11-08 17:57:05,620 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=520, PETRI_PLACES=91, PETRI_TRANSITIONS=117} [2024-11-08 17:57:05,621 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 10 predicate places. [2024-11-08 17:57:05,622 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 117 transitions, 520 flow [2024-11-08 17:57:05,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:05,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:05,622 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:05,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:57:05,623 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-08 17:57:05,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:05,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1421358307, now seen corresponding path program 1 times [2024-11-08 17:57:05,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:05,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198940466] [2024-11-08 17:57:05,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:05,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:05,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:05,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198940466] [2024-11-08 17:57:05,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198940466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:05,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:05,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:57:05,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429392410] [2024-11-08 17:57:05,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:05,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:57:05,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:05,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:57:05,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:57:05,811 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 96 [2024-11-08 17:57:05,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 117 transitions, 520 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:05,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:05,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 96 [2024-11-08 17:57:05,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:08,047 INFO L124 PetriNetUnfolderBase]: 12538/19216 cut-off events. [2024-11-08 17:57:08,048 INFO L125 PetriNetUnfolderBase]: For 6028/6420 co-relation queries the response was YES. [2024-11-08 17:57:08,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41793 conditions, 19216 events. 12538/19216 cut-off events. For 6028/6420 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 120130 event pairs, 9361 based on Foata normal form. 112/15068 useless extension candidates. Maximal degree in co-relation 41613. Up to 15276 conditions per place. [2024-11-08 17:57:08,347 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 141 selfloop transitions, 5 changer transitions 2/175 dead transitions. [2024-11-08 17:57:08,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 175 transitions, 1067 flow [2024-11-08 17:57:08,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:57:08,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:57:08,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 246 transitions. [2024-11-08 17:57:08,351 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-11-08 17:57:08,352 INFO L175 Difference]: Start difference. First operand has 91 places, 117 transitions, 520 flow. Second operand 5 states and 246 transitions. [2024-11-08 17:57:08,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 175 transitions, 1067 flow [2024-11-08 17:57:08,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 175 transitions, 1059 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:57:08,370 INFO L231 Difference]: Finished difference. Result has 95 places, 119 transitions, 539 flow [2024-11-08 17:57:08,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=539, PETRI_PLACES=95, PETRI_TRANSITIONS=119} [2024-11-08 17:57:08,373 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 14 predicate places. [2024-11-08 17:57:08,374 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 119 transitions, 539 flow [2024-11-08 17:57:08,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:08,375 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:08,375 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:08,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 17:57:08,376 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-08 17:57:08,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:08,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1112432377, now seen corresponding path program 1 times [2024-11-08 17:57:08,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:08,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675713788] [2024-11-08 17:57:08,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:08,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:08,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:08,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:08,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675713788] [2024-11-08 17:57:08,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675713788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:08,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:08,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:57:08,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191310061] [2024-11-08 17:57:08,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:08,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:57:08,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:08,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:57:08,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:57:08,461 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2024-11-08 17:57:08,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 119 transitions, 539 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:08,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:08,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2024-11-08 17:57:08,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:12,495 INFO L124 PetriNetUnfolderBase]: 23828/34764 cut-off events. [2024-11-08 17:57:12,495 INFO L125 PetriNetUnfolderBase]: For 9595/10409 co-relation queries the response was YES. [2024-11-08 17:57:12,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76662 conditions, 34764 events. 23828/34764 cut-off events. For 9595/10409 co-relation queries the response was YES. Maximal size of possible extension queue 1103. Compared 216445 event pairs, 13589 based on Foata normal form. 0/26719 useless extension candidates. Maximal degree in co-relation 76488. Up to 16287 conditions per place. [2024-11-08 17:57:12,760 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 111 selfloop transitions, 5 changer transitions 0/148 dead transitions. [2024-11-08 17:57:12,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 148 transitions, 857 flow [2024-11-08 17:57:12,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:57:12,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:57:12,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2024-11-08 17:57:12,763 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-08 17:57:12,766 INFO L175 Difference]: Start difference. First operand has 95 places, 119 transitions, 539 flow. Second operand 3 states and 180 transitions. [2024-11-08 17:57:12,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 148 transitions, 857 flow [2024-11-08 17:57:12,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 148 transitions, 853 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-08 17:57:12,811 INFO L231 Difference]: Finished difference. Result has 98 places, 120 transitions, 561 flow [2024-11-08 17:57:12,812 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=561, PETRI_PLACES=98, PETRI_TRANSITIONS=120} [2024-11-08 17:57:12,813 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 17 predicate places. [2024-11-08 17:57:12,813 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 120 transitions, 561 flow [2024-11-08 17:57:12,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:12,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:12,814 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:12,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 17:57:12,814 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-08 17:57:12,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:12,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1184175744, now seen corresponding path program 1 times [2024-11-08 17:57:12,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:12,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100943167] [2024-11-08 17:57:12,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:12,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:13,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:13,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:13,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100943167] [2024-11-08 17:57:13,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100943167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:57:13,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442759819] [2024-11-08 17:57:13,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:13,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:13,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:13,142 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:13,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:57:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:13,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:57:13,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:13,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:57:13,344 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:57:13,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442759819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:13,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:57:13,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-08 17:57:13,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655347054] [2024-11-08 17:57:13,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:13,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:57:13,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:13,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:57:13,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:57:13,347 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 96 [2024-11-08 17:57:13,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 120 transitions, 561 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:13,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:13,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 96 [2024-11-08 17:57:13,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:16,182 INFO L124 PetriNetUnfolderBase]: 14467/22595 cut-off events. [2024-11-08 17:57:16,182 INFO L125 PetriNetUnfolderBase]: For 10360/11272 co-relation queries the response was YES. [2024-11-08 17:57:16,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50071 conditions, 22595 events. 14467/22595 cut-off events. For 10360/11272 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 149483 event pairs, 11366 based on Foata normal form. 1221/19111 useless extension candidates. Maximal degree in co-relation 49896. Up to 19100 conditions per place. [2024-11-08 17:57:16,294 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 79 selfloop transitions, 1 changer transitions 0/116 dead transitions. [2024-11-08 17:57:16,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 116 transitions, 707 flow [2024-11-08 17:57:16,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:57:16,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:57:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2024-11-08 17:57:16,296 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5451388888888888 [2024-11-08 17:57:16,296 INFO L175 Difference]: Start difference. First operand has 98 places, 120 transitions, 561 flow. Second operand 3 states and 157 transitions. [2024-11-08 17:57:16,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 116 transitions, 707 flow [2024-11-08 17:57:16,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 116 transitions, 697 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:57:16,315 INFO L231 Difference]: Finished difference. Result has 94 places, 116 transitions, 539 flow [2024-11-08 17:57:16,316 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=539, PETRI_PLACES=94, PETRI_TRANSITIONS=116} [2024-11-08 17:57:16,316 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 13 predicate places. [2024-11-08 17:57:16,317 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 116 transitions, 539 flow [2024-11-08 17:57:16,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:16,317 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:16,317 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-08 17:57:16,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:57:16,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 17:57:16,522 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-08 17:57:16,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:16,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1432278224, now seen corresponding path program 2 times [2024-11-08 17:57:16,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:16,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921675374] [2024-11-08 17:57:16,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:16,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:16,723 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:16,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:16,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921675374] [2024-11-08 17:57:16,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921675374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:57:16,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472976111] [2024-11-08 17:57:16,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:57:16,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:16,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:16,726 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:16,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:57:16,818 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 17:57:16,818 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:57:16,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:57:16,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 17:57:16,921 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:57:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 17:57:17,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472976111] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:57:17,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:57:17,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 3, 3] total 13 [2024-11-08 17:57:17,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511595352] [2024-11-08 17:57:17,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:57:17,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 17:57:17,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:17,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 17:57:17,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:57:17,152 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 96 [2024-11-08 17:57:17,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 116 transitions, 539 flow. Second operand has 15 states, 15 states have (on average 23.533333333333335) internal successors, (353), 15 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:17,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:17,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 96 [2024-11-08 17:57:17,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:20,737 INFO L124 PetriNetUnfolderBase]: 14482/22640 cut-off events. [2024-11-08 17:57:20,737 INFO L125 PetriNetUnfolderBase]: For 6900/7812 co-relation queries the response was YES. [2024-11-08 17:57:20,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49310 conditions, 22640 events. 14482/22640 cut-off events. For 6900/7812 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 149927 event pairs, 11366 based on Foata normal form. 10/17887 useless extension candidates. Maximal degree in co-relation 49284. Up to 19039 conditions per place. [2024-11-08 17:57:20,871 INFO L140 encePairwiseOnDemand]: 80/96 looper letters, 90 selfloop transitions, 59 changer transitions 3/174 dead transitions. [2024-11-08 17:57:20,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 174 transitions, 1005 flow [2024-11-08 17:57:20,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:57:20,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-08 17:57:20,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 486 transitions. [2024-11-08 17:57:20,876 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-11-08 17:57:20,876 INFO L175 Difference]: Start difference. First operand has 94 places, 116 transitions, 539 flow. Second operand 15 states and 486 transitions. [2024-11-08 17:57:20,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 174 transitions, 1005 flow [2024-11-08 17:57:20,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 174 transitions, 968 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-08 17:57:20,894 INFO L231 Difference]: Finished difference. Result has 101 places, 125 transitions, 672 flow [2024-11-08 17:57:20,894 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=672, PETRI_PLACES=101, PETRI_TRANSITIONS=125} [2024-11-08 17:57:20,895 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 20 predicate places. [2024-11-08 17:57:20,895 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 125 transitions, 672 flow [2024-11-08 17:57:20,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 23.533333333333335) internal successors, (353), 15 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:20,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:20,897 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:20,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:57:21,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 17:57:21,101 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-08 17:57:21,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:21,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1329743453, now seen corresponding path program 1 times [2024-11-08 17:57:21,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:21,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812432828] [2024-11-08 17:57:21,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:21,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:57:21,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:21,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812432828] [2024-11-08 17:57:21,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812432828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:21,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:21,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:57:21,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009907511] [2024-11-08 17:57:21,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:21,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:57:21,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:21,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:57:21,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:57:21,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 96 [2024-11-08 17:57:21,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 125 transitions, 672 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:21,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:21,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 96 [2024-11-08 17:57:21,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:24,479 INFO L124 PetriNetUnfolderBase]: 18143/27294 cut-off events. [2024-11-08 17:57:24,479 INFO L125 PetriNetUnfolderBase]: For 11380/13198 co-relation queries the response was YES. [2024-11-08 17:57:24,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61399 conditions, 27294 events. 18143/27294 cut-off events. For 11380/13198 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 171003 event pairs, 6045 based on Foata normal form. 566/22761 useless extension candidates. Maximal degree in co-relation 61375. Up to 17545 conditions per place. [2024-11-08 17:57:24,622 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 115 selfloop transitions, 2 changer transitions 0/151 dead transitions. [2024-11-08 17:57:24,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 151 transitions, 986 flow [2024-11-08 17:57:24,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:57:24,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:57:24,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2024-11-08 17:57:24,624 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-08 17:57:24,625 INFO L175 Difference]: Start difference. First operand has 101 places, 125 transitions, 672 flow. Second operand 3 states and 180 transitions. [2024-11-08 17:57:24,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 151 transitions, 986 flow [2024-11-08 17:57:24,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 151 transitions, 783 flow, removed 16 selfloop flow, removed 13 redundant places. [2024-11-08 17:57:24,637 INFO L231 Difference]: Finished difference. Result has 89 places, 126 transitions, 485 flow [2024-11-08 17:57:24,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=485, PETRI_PLACES=89, PETRI_TRANSITIONS=126} [2024-11-08 17:57:24,638 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 8 predicate places. [2024-11-08 17:57:24,638 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 126 transitions, 485 flow [2024-11-08 17:57:24,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:24,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:24,639 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:24,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 17:57:24,639 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-08 17:57:24,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:24,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1879789886, now seen corresponding path program 1 times [2024-11-08 17:57:24,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:24,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093319891] [2024-11-08 17:57:24,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:24,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:24,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:57:24,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:24,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093319891] [2024-11-08 17:57:24,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093319891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:24,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:24,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:57:24,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314443817] [2024-11-08 17:57:24,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:24,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:57:24,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:24,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:57:24,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:57:24,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 96 [2024-11-08 17:57:24,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 126 transitions, 485 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:24,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:24,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 96 [2024-11-08 17:57:24,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:29,070 INFO L124 PetriNetUnfolderBase]: 23716/36267 cut-off events. [2024-11-08 17:57:29,070 INFO L125 PetriNetUnfolderBase]: For 15807/17854 co-relation queries the response was YES. [2024-11-08 17:57:29,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82362 conditions, 36267 events. 23716/36267 cut-off events. For 15807/17854 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 241977 event pairs, 18637 based on Foata normal form. 320/29561 useless extension candidates. Maximal degree in co-relation 82339. Up to 24067 conditions per place. [2024-11-08 17:57:29,231 INFO L140 encePairwiseOnDemand]: 85/96 looper letters, 111 selfloop transitions, 20 changer transitions 0/159 dead transitions. [2024-11-08 17:57:29,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 159 transitions, 848 flow [2024-11-08 17:57:29,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:57:29,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:57:29,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 244 transitions. [2024-11-08 17:57:29,234 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-11-08 17:57:29,234 INFO L175 Difference]: Start difference. First operand has 89 places, 126 transitions, 485 flow. Second operand 5 states and 244 transitions. [2024-11-08 17:57:29,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 159 transitions, 848 flow [2024-11-08 17:57:29,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 159 transitions, 845 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:57:29,243 INFO L231 Difference]: Finished difference. Result has 94 places, 128 transitions, 560 flow [2024-11-08 17:57:29,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=560, PETRI_PLACES=94, PETRI_TRANSITIONS=128} [2024-11-08 17:57:29,244 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 13 predicate places. [2024-11-08 17:57:29,244 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 128 transitions, 560 flow [2024-11-08 17:57:29,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:29,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:29,245 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:29,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 17:57:29,245 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-08 17:57:29,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:29,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1703082525, now seen corresponding path program 1 times [2024-11-08 17:57:29,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:29,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246843334] [2024-11-08 17:57:29,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:29,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:57:29,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:29,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246843334] [2024-11-08 17:57:29,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246843334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:29,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:29,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:57:29,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19058429] [2024-11-08 17:57:29,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:29,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:57:29,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:29,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:57:29,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:57:29,345 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 96 [2024-11-08 17:57:29,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 128 transitions, 560 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:29,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:29,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 96 [2024-11-08 17:57:29,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:33,888 INFO L124 PetriNetUnfolderBase]: 27014/38925 cut-off events. [2024-11-08 17:57:33,888 INFO L125 PetriNetUnfolderBase]: For 17962/20125 co-relation queries the response was YES. [2024-11-08 17:57:33,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91828 conditions, 38925 events. 27014/38925 cut-off events. For 17962/20125 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 225413 event pairs, 14081 based on Foata normal form. 452/33555 useless extension candidates. Maximal degree in co-relation 91802. Up to 24078 conditions per place. [2024-11-08 17:57:34,066 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 115 selfloop transitions, 4 changer transitions 3/150 dead transitions. [2024-11-08 17:57:34,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 150 transitions, 866 flow [2024-11-08 17:57:34,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:57:34,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:57:34,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 167 transitions. [2024-11-08 17:57:34,068 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5798611111111112 [2024-11-08 17:57:34,068 INFO L175 Difference]: Start difference. First operand has 94 places, 128 transitions, 560 flow. Second operand 3 states and 167 transitions. [2024-11-08 17:57:34,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 150 transitions, 866 flow [2024-11-08 17:57:34,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 150 transitions, 845 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-08 17:57:34,077 INFO L231 Difference]: Finished difference. Result has 96 places, 126 transitions, 547 flow [2024-11-08 17:57:34,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=547, PETRI_PLACES=96, PETRI_TRANSITIONS=126} [2024-11-08 17:57:34,078 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 15 predicate places. [2024-11-08 17:57:34,079 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 126 transitions, 547 flow [2024-11-08 17:57:34,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:34,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:34,079 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:34,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 17:57:34,079 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-08 17:57:34,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:34,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1665708879, now seen corresponding path program 1 times [2024-11-08 17:57:34,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:34,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109825432] [2024-11-08 17:57:34,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:34,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:34,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:57:34,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:34,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109825432] [2024-11-08 17:57:34,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109825432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:57:34,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149213321] [2024-11-08 17:57:34,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:34,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:34,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:34,274 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:34,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:57:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:34,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:57:34,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:34,439 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 17:57:34,439 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:57:34,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149213321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:34,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:57:34,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-08 17:57:34,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133205035] [2024-11-08 17:57:34,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:34,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:57:34,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:34,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:57:34,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:57:34,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 96 [2024-11-08 17:57:34,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 126 transitions, 547 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:34,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:34,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 96 [2024-11-08 17:57:34,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:37,243 INFO L124 PetriNetUnfolderBase]: 16321/24806 cut-off events. [2024-11-08 17:57:37,243 INFO L125 PetriNetUnfolderBase]: For 17734/19527 co-relation queries the response was YES. [2024-11-08 17:57:37,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58800 conditions, 24806 events. 16321/24806 cut-off events. For 17734/19527 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 154695 event pairs, 12973 based on Foata normal form. 1360/21640 useless extension candidates. Maximal degree in co-relation 58774. Up to 21783 conditions per place. [2024-11-08 17:57:37,372 INFO L140 encePairwiseOnDemand]: 93/96 looper letters, 88 selfloop transitions, 1 changer transitions 0/124 dead transitions. [2024-11-08 17:57:37,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 124 transitions, 717 flow [2024-11-08 17:57:37,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:57:37,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:57:37,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-11-08 17:57:37,374 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-08 17:57:37,374 INFO L175 Difference]: Start difference. First operand has 96 places, 126 transitions, 547 flow. Second operand 3 states and 153 transitions. [2024-11-08 17:57:37,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 124 transitions, 717 flow [2024-11-08 17:57:37,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 124 transitions, 693 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-08 17:57:37,384 INFO L231 Difference]: Finished difference. Result has 93 places, 124 transitions, 517 flow [2024-11-08 17:57:37,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=517, PETRI_PLACES=93, PETRI_TRANSITIONS=124} [2024-11-08 17:57:37,385 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 12 predicate places. [2024-11-08 17:57:37,385 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 124 transitions, 517 flow [2024-11-08 17:57:37,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:37,385 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:37,386 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:37,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:57:37,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9174d2-f849-426d-a5b0-3482010b04e4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 17:57:37,586 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-08 17:57:37,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:37,587 INFO L85 PathProgramCache]: Analyzing trace with hash 77015173, now seen corresponding path program 1 times [2024-11-08 17:57:37,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:37,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788432726] [2024-11-08 17:57:37,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:37,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:37,663 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 17:57:37,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:37,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788432726] [2024-11-08 17:57:37,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788432726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:37,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:37,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:57:37,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42050404] [2024-11-08 17:57:37,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:37,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:57:37,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:37,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:57:37,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:57:37,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 96 [2024-11-08 17:57:37,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 124 transitions, 517 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:37,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:37,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 96 [2024-11-08 17:57:37,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand