./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/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_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/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_156248d4-2733-4ee5-a4f4-56b8414d37aa/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 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:19:02,539 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:19:02,643 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 18:19:02,648 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:19:02,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:19:02,672 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:19:02,673 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:19:02,673 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:19:02,674 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:19:02,674 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:19:02,675 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:19:02,675 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:19:02,676 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:19:02,676 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:19:02,677 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:19:02,677 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:19:02,678 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:19:02,678 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:19:02,678 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:19:02,679 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:19:02,679 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:19:02,680 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:19:02,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:19:02,680 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:19:02,683 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:19:02,684 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 18:19:02,684 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 18:19:02,684 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:19:02,685 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:19:02,685 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:19:02,685 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:19:02,686 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:19:02,686 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:19:02,686 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:19:02,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:19:02,690 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:19:02,691 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:19:02,691 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:19:02,691 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:19:02,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:19:02,692 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:19:02,692 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:19:02,692 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:19:02,693 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:19:02,693 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_156248d4-2733-4ee5-a4f4-56b8414d37aa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a [2024-11-08 18:19:02,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:19:03,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:19:03,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:19:03,011 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:19:03,012 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:19:03,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c Unable to find full path for "g++" [2024-11-08 18:19:05,096 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:19:05,307 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:19:05,308 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2024-11-08 18:19:05,318 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/data/beb4a55ff/113cb1e38fad4ec4a24f5017ed4884e7/FLAGe04761914 [2024-11-08 18:19:05,339 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/data/beb4a55ff/113cb1e38fad4ec4a24f5017ed4884e7 [2024-11-08 18:19:05,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:19:05,344 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:19:05,347 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:19:05,347 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:19:05,353 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:19:05,353 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:19:05" (1/1) ... [2024-11-08 18:19:05,355 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217fb56b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:05, skipping insertion in model container [2024-11-08 18:19:05,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:19:05" (1/1) ... [2024-11-08 18:19:05,386 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:19:05,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:19:05,623 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:19:05,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:19:05,671 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:19:05,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:05 WrapperNode [2024-11-08 18:19:05,671 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:19:05,673 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:19:05,673 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:19:05,673 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:19:05,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:05" (1/1) ... [2024-11-08 18:19:05,696 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:05" (1/1) ... [2024-11-08 18:19:05,719 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 90 [2024-11-08 18:19:05,719 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:19:05,720 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:19:05,720 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:19:05,721 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:19:05,739 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:05" (1/1) ... [2024-11-08 18:19:05,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:05" (1/1) ... [2024-11-08 18:19:05,747 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:05" (1/1) ... [2024-11-08 18:19:05,765 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-08 18:19:05,765 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:05" (1/1) ... [2024-11-08 18:19:05,766 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:05" (1/1) ... [2024-11-08 18:19:05,775 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:05" (1/1) ... [2024-11-08 18:19:05,779 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:05" (1/1) ... [2024-11-08 18:19:05,781 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:05" (1/1) ... [2024-11-08 18:19:05,783 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:05" (1/1) ... [2024-11-08 18:19:05,785 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:19:05,786 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:19:05,787 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:19:05,787 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:19:05,788 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:05" (1/1) ... [2024-11-08 18:19:05,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:19:05,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:19:05,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:19:05,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:19:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:19:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 18:19:05,862 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 18:19:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 18:19:05,862 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 18:19:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 18:19:05,862 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 18:19:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:19:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 18:19:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 18:19:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 18:19:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 18:19:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 18:19:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 18:19:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:19:05,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:19:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 18:19:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 18:19:05,868 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 18:19:06,011 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:19:06,013 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:19:06,354 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 18:19:06,357 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:19:06,726 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:19:06,726 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:19:06,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:19:06 BoogieIcfgContainer [2024-11-08 18:19:06,727 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:19:06,730 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:19:06,730 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:19:06,734 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:19:06,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:19:05" (1/3) ... [2024-11-08 18:19:06,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f55eeba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:19:06, skipping insertion in model container [2024-11-08 18:19:06,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:19:05" (2/3) ... [2024-11-08 18:19:06,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f55eeba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:19:06, skipping insertion in model container [2024-11-08 18:19:06,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:19:06" (3/3) ... [2024-11-08 18:19:06,737 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array-hom.wvr.c [2024-11-08 18:19:06,757 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:19:06,758 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-08 18:19:06,758 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 18:19:06,852 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 18:19:06,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 59 transitions, 139 flow [2024-11-08 18:19:06,940 INFO L124 PetriNetUnfolderBase]: 8/56 cut-off events. [2024-11-08 18:19:06,941 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 18:19:06,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 56 events. 8/56 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 131 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-08 18:19:06,945 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 59 transitions, 139 flow [2024-11-08 18:19:06,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 54 transitions, 123 flow [2024-11-08 18:19:06,959 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:19:06,967 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;@15e00e58, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:19:06,967 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-08 18:19:06,973 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:19:06,973 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-08 18:19:06,973 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:19:06,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:19:06,974 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 18:19:06,975 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 18:19:06,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:19:06,981 INFO L85 PathProgramCache]: Analyzing trace with hash 13843579, now seen corresponding path program 1 times [2024-11-08 18:19:06,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:19:06,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736468097] [2024-11-08 18:19:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:06,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:19:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:07,267 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 18:19:07,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:19:07,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736468097] [2024-11-08 18:19:07,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736468097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:19:07,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:19:07,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:19:07,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371600638] [2024-11-08 18:19:07,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:19:07,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:19:07,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:19:07,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:19:07,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:19:07,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 59 [2024-11-08 18:19:07,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 123 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 18:19:07,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:19:07,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 59 [2024-11-08 18:19:07,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:19:07,730 INFO L124 PetriNetUnfolderBase]: 474/962 cut-off events. [2024-11-08 18:19:07,730 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-08 18:19:07,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1655 conditions, 962 events. 474/962 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5593 event pairs, 306 based on Foata normal form. 1/795 useless extension candidates. Maximal degree in co-relation 1488. Up to 625 conditions per place. [2024-11-08 18:19:07,757 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 25 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-11-08 18:19:07,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 187 flow [2024-11-08 18:19:07,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:19:07,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:19:07,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-11-08 18:19:07,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6567796610169492 [2024-11-08 18:19:07,781 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 123 flow. Second operand 4 states and 155 transitions. [2024-11-08 18:19:07,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 187 flow [2024-11-08 18:19:07,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 178 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-08 18:19:07,791 INFO L231 Difference]: Finished difference. Result has 56 places, 57 transitions, 143 flow [2024-11-08 18:19:07,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=56, PETRI_TRANSITIONS=57} [2024-11-08 18:19:07,797 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-11-08 18:19:07,797 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 57 transitions, 143 flow [2024-11-08 18:19:07,797 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 18:19:07,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:19:07,798 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-08 18:19:07,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:19:07,798 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 18:19:07,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:19:07,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1268202655, now seen corresponding path program 1 times [2024-11-08 18:19:07,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:19:07,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538190785] [2024-11-08 18:19:07,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:07,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:19:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:07,998 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 18:19:07,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:19:07,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538190785] [2024-11-08 18:19:07,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538190785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:19:07,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855595549] [2024-11-08 18:19:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:07,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:07,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:19:08,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:19:08,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:19:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:08,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:19:08,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:19:08,170 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 18:19:08,171 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:19:08,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855595549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:19:08,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:19:08,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 18:19:08,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520157734] [2024-11-08 18:19:08,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:19:08,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:19:08,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:19:08,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:19:08,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:19:08,222 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 59 [2024-11-08 18:19:08,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 143 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 18:19:08,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:19:08,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 59 [2024-11-08 18:19:08,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:19:08,489 INFO L124 PetriNetUnfolderBase]: 474/961 cut-off events. [2024-11-08 18:19:08,490 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-08 18:19:08,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1639 conditions, 961 events. 474/961 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5588 event pairs, 306 based on Foata normal form. 1/794 useless extension candidates. Maximal degree in co-relation 1609. Up to 620 conditions per place. [2024-11-08 18:19:08,500 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 21 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-11-08 18:19:08,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 195 flow [2024-11-08 18:19:08,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:19:08,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:19:08,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 215 transitions. [2024-11-08 18:19:08,506 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6073446327683616 [2024-11-08 18:19:08,506 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 143 flow. Second operand 6 states and 215 transitions. [2024-11-08 18:19:08,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 195 flow [2024-11-08 18:19:08,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 56 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:19:08,509 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 150 flow [2024-11-08 18:19:08,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=150, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-11-08 18:19:08,511 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2024-11-08 18:19:08,511 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 150 flow [2024-11-08 18:19:08,511 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 18:19:08,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:19:08,512 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-08 18:19:08,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:19:08,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:08,712 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 18:19:08,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:19:08,713 INFO L85 PathProgramCache]: Analyzing trace with hash -659576203, now seen corresponding path program 1 times [2024-11-08 18:19:08,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:19:08,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523098925] [2024-11-08 18:19:08,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:08,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:19:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:08,884 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 18:19:08,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:19:08,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523098925] [2024-11-08 18:19:08,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523098925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:19:08,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972677462] [2024-11-08 18:19:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:08,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:08,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:19:08,888 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:19:08,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:19:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:08,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:19:08,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:19:09,025 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 18:19:09,025 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:19:09,088 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 18:19:09,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972677462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:19:09,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:19:09,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-08 18:19:09,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459521713] [2024-11-08 18:19:09,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:19:09,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 18:19:09,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:19:09,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 18:19:09,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:19:09,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 59 [2024-11-08 18:19:09,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 150 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 18:19:09,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:19:09,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 59 [2024-11-08 18:19:09,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:19:09,422 INFO L124 PetriNetUnfolderBase]: 480/982 cut-off events. [2024-11-08 18:19:09,422 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-11-08 18:19:09,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1692 conditions, 982 events. 480/982 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5778 event pairs, 306 based on Foata normal form. 3/815 useless extension candidates. Maximal degree in co-relation 1610. Up to 627 conditions per place. [2024-11-08 18:19:09,431 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 24 selfloop transitions, 13 changer transitions 0/65 dead transitions. [2024-11-08 18:19:09,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 65 transitions, 278 flow [2024-11-08 18:19:09,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 18:19:09,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 18:19:09,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 350 transitions. [2024-11-08 18:19:09,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5932203389830508 [2024-11-08 18:19:09,435 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 150 flow. Second operand 10 states and 350 transitions. [2024-11-08 18:19:09,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 65 transitions, 278 flow [2024-11-08 18:19:09,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 65 transitions, 248 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-08 18:19:09,438 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 218 flow [2024-11-08 18:19:09,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=218, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2024-11-08 18:19:09,439 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2024-11-08 18:19:09,439 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 218 flow [2024-11-08 18:19:09,440 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 18:19:09,440 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:19:09,440 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:19:09,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:19:09,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:09,641 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 18:19:09,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:19:09,642 INFO L85 PathProgramCache]: Analyzing trace with hash 2020248513, now seen corresponding path program 1 times [2024-11-08 18:19:09,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:19:09,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973575072] [2024-11-08 18:19:09,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:09,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:19:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:09,738 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 18:19:09,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:19:09,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973575072] [2024-11-08 18:19:09,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973575072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:19:09,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:19:09,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:19:09,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571276768] [2024-11-08 18:19:09,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:19:09,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:19:09,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:19:09,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:19:09,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:19:09,760 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 59 [2024-11-08 18:19:09,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 218 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 18:19:09,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:19:09,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 59 [2024-11-08 18:19:09,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:19:10,164 INFO L124 PetriNetUnfolderBase]: 1152/2112 cut-off events. [2024-11-08 18:19:10,164 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-11-08 18:19:10,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3764 conditions, 2112 events. 1152/2112 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 12720 event pairs, 546 based on Foata normal form. 42/1837 useless extension candidates. Maximal degree in co-relation 3725. Up to 1096 conditions per place. [2024-11-08 18:19:10,186 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 65 selfloop transitions, 4 changer transitions 0/95 dead transitions. [2024-11-08 18:19:10,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 95 transitions, 422 flow [2024-11-08 18:19:10,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:19:10,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:19:10,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2024-11-08 18:19:10,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7584745762711864 [2024-11-08 18:19:10,189 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 218 flow. Second operand 4 states and 179 transitions. [2024-11-08 18:19:10,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 95 transitions, 422 flow [2024-11-08 18:19:10,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 95 transitions, 411 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-08 18:19:10,196 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 236 flow [2024-11-08 18:19:10,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2024-11-08 18:19:10,197 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2024-11-08 18:19:10,199 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 236 flow [2024-11-08 18:19:10,199 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 18:19:10,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:19:10,199 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:19:10,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:19:10,200 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 18:19:10,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:19:10,200 INFO L85 PathProgramCache]: Analyzing trace with hash 907751578, now seen corresponding path program 1 times [2024-11-08 18:19:10,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:19:10,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880743807] [2024-11-08 18:19:10,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:10,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:19:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:10,270 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 18:19:10,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:19:10,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880743807] [2024-11-08 18:19:10,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880743807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:19:10,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:19:10,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:19:10,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218244152] [2024-11-08 18:19:10,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:19:10,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:19:10,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:19:10,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:19:10,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:19:10,291 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 59 [2024-11-08 18:19:10,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 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 18:19:10,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:19:10,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 59 [2024-11-08 18:19:10,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:19:10,816 INFO L124 PetriNetUnfolderBase]: 1839/3192 cut-off events. [2024-11-08 18:19:10,816 INFO L125 PetriNetUnfolderBase]: For 809/1098 co-relation queries the response was YES. [2024-11-08 18:19:10,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6462 conditions, 3192 events. 1839/3192 cut-off events. For 809/1098 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 19453 event pairs, 721 based on Foata normal form. 161/2940 useless extension candidates. Maximal degree in co-relation 6421. Up to 1698 conditions per place. [2024-11-08 18:19:10,845 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 69 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2024-11-08 18:19:10,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 100 transitions, 478 flow [2024-11-08 18:19:10,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:19:10,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:19:10,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-11-08 18:19:10,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-08 18:19:10,847 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 236 flow. Second operand 4 states and 177 transitions. [2024-11-08 18:19:10,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 100 transitions, 478 flow [2024-11-08 18:19:10,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 100 transitions, 469 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:19:10,855 INFO L231 Difference]: Finished difference. Result has 74 places, 71 transitions, 262 flow [2024-11-08 18:19:10,856 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=74, PETRI_TRANSITIONS=71} [2024-11-08 18:19:10,857 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2024-11-08 18:19:10,858 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 71 transitions, 262 flow [2024-11-08 18:19:10,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 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 18:19:10,859 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:19:10,859 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:19:10,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:19:10,859 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 18:19:10,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:19:10,860 INFO L85 PathProgramCache]: Analyzing trace with hash 895307785, now seen corresponding path program 1 times [2024-11-08 18:19:10,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:19:10,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681400208] [2024-11-08 18:19:10,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:10,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:19:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:10,964 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 18:19:10,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:19:10,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681400208] [2024-11-08 18:19:10,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681400208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:19:10,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:19:10,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:19:10,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664745231] [2024-11-08 18:19:10,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:19:10,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:19:10,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:19:10,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:19:10,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:19:10,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 59 [2024-11-08 18:19:10,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 18:19:10,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:19:10,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 59 [2024-11-08 18:19:10,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:19:11,345 INFO L124 PetriNetUnfolderBase]: 1164/2263 cut-off events. [2024-11-08 18:19:11,345 INFO L125 PetriNetUnfolderBase]: For 827/1091 co-relation queries the response was YES. [2024-11-08 18:19:11,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4695 conditions, 2263 events. 1164/2263 cut-off events. For 827/1091 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14471 event pairs, 724 based on Foata normal form. 92/1972 useless extension candidates. Maximal degree in co-relation 4656. Up to 1477 conditions per place. [2024-11-08 18:19:11,367 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 39 selfloop transitions, 2 changer transitions 2/72 dead transitions. [2024-11-08 18:19:11,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 72 transitions, 348 flow [2024-11-08 18:19:11,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:19:11,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:19:11,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-11-08 18:19:11,370 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6567796610169492 [2024-11-08 18:19:11,370 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 262 flow. Second operand 4 states and 155 transitions. [2024-11-08 18:19:11,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 72 transitions, 348 flow [2024-11-08 18:19:11,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 345 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:19:11,376 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 265 flow [2024-11-08 18:19:11,376 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=265, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2024-11-08 18:19:11,378 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2024-11-08 18:19:11,379 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 265 flow [2024-11-08 18:19:11,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 18:19:11,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:19:11,379 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:19:11,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:19:11,380 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 18:19:11,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:19:11,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1380192401, now seen corresponding path program 1 times [2024-11-08 18:19:11,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:19:11,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966177634] [2024-11-08 18:19:11,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:11,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:19:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:11,469 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 18:19:11,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:19:11,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966177634] [2024-11-08 18:19:11,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966177634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:19:11,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:19:11,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:19:11,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674757752] [2024-11-08 18:19:11,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:19:11,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:19:11,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:19:11,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:19:11,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:19:11,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 59 [2024-11-08 18:19:11,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 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 18:19:11,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:19:11,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 59 [2024-11-08 18:19:11,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:19:11,941 INFO L124 PetriNetUnfolderBase]: 1606/2674 cut-off events. [2024-11-08 18:19:11,941 INFO L125 PetriNetUnfolderBase]: For 981/1395 co-relation queries the response was YES. [2024-11-08 18:19:11,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5824 conditions, 2674 events. 1606/2674 cut-off events. For 981/1395 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15469 event pairs, 388 based on Foata normal form. 220/2527 useless extension candidates. Maximal degree in co-relation 5795. Up to 786 conditions per place. [2024-11-08 18:19:11,964 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 63 selfloop transitions, 8 changer transitions 0/99 dead transitions. [2024-11-08 18:19:11,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 99 transitions, 509 flow [2024-11-08 18:19:11,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:19:11,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 18:19:11,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2024-11-08 18:19:11,966 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6745762711864407 [2024-11-08 18:19:11,966 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 265 flow. Second operand 5 states and 199 transitions. [2024-11-08 18:19:11,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 99 transitions, 509 flow [2024-11-08 18:19:11,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 99 transitions, 505 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:19:11,970 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 275 flow [2024-11-08 18:19:11,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=275, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-11-08 18:19:11,971 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2024-11-08 18:19:11,971 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 275 flow [2024-11-08 18:19:11,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 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 18:19:11,972 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:19:11,972 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:19:11,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 18:19:11,972 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 18:19:11,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:19:11,973 INFO L85 PathProgramCache]: Analyzing trace with hash 163709046, now seen corresponding path program 1 times [2024-11-08 18:19:11,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:19:11,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605658049] [2024-11-08 18:19:11,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:11,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:19:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:12,141 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 18:19:12,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:19:12,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605658049] [2024-11-08 18:19:12,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605658049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:19:12,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23871158] [2024-11-08 18:19:12,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:12,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:12,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:19:12,144 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:19:12,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:19:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:12,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:19:12,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:19:12,365 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 18:19:12,366 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:19:12,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23871158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:19:12,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:19:12,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 11 [2024-11-08 18:19:12,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932520787] [2024-11-08 18:19:12,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:19:12,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:19:12,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:19:12,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:19:12,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-08 18:19:12,447 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2024-11-08 18:19:12,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 275 flow. Second operand has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 0 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 18:19:12,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:19:12,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2024-11-08 18:19:12,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:19:13,042 INFO L124 PetriNetUnfolderBase]: 2557/3704 cut-off events. [2024-11-08 18:19:13,043 INFO L125 PetriNetUnfolderBase]: For 1629/2331 co-relation queries the response was YES. [2024-11-08 18:19:13,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9097 conditions, 3704 events. 2557/3704 cut-off events. For 1629/2331 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 19638 event pairs, 724 based on Foata normal form. 320/3657 useless extension candidates. Maximal degree in co-relation 9060. Up to 1643 conditions per place. [2024-11-08 18:19:13,080 INFO L140 encePairwiseOnDemand]: 51/59 looper letters, 64 selfloop transitions, 10 changer transitions 3/101 dead transitions. [2024-11-08 18:19:13,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 101 transitions, 539 flow [2024-11-08 18:19:13,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:19:13,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:19:13,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2024-11-08 18:19:13,085 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.596045197740113 [2024-11-08 18:19:13,085 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 275 flow. Second operand 6 states and 211 transitions. [2024-11-08 18:19:13,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 101 transitions, 539 flow [2024-11-08 18:19:13,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 101 transitions, 521 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 18:19:13,093 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 294 flow [2024-11-08 18:19:13,093 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=79, PETRI_TRANSITIONS=69} [2024-11-08 18:19:13,096 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2024-11-08 18:19:13,096 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 294 flow [2024-11-08 18:19:13,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 0 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 18:19:13,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:19:13,097 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:19:13,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:19:13,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:13,299 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 18:19:13,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:19:13,303 INFO L85 PathProgramCache]: Analyzing trace with hash 615232705, now seen corresponding path program 1 times [2024-11-08 18:19:13,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:19:13,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591852582] [2024-11-08 18:19:13,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:13,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:19:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:13,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:19:13,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:19:13,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591852582] [2024-11-08 18:19:13,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591852582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:19:13,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214310127] [2024-11-08 18:19:13,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:13,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:13,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:19:13,404 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:19:13,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:19:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:13,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 18:19:13,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:19:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:19:13,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:19:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:19:13,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214310127] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:19:13,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:19:13,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-08 18:19:13,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122607100] [2024-11-08 18:19:13,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:19:13,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 18:19:13,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:19:13,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 18:19:13,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:19:14,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 59 [2024-11-08 18:19:14,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 294 flow. Second operand has 19 states, 19 states have (on average 23.526315789473685) internal successors, (447), 19 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 18:19:14,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:19:14,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 59 [2024-11-08 18:19:14,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:19:16,074 INFO L124 PetriNetUnfolderBase]: 5095/7691 cut-off events. [2024-11-08 18:19:16,074 INFO L125 PetriNetUnfolderBase]: For 5174/6174 co-relation queries the response was YES. [2024-11-08 18:19:16,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19585 conditions, 7691 events. 5095/7691 cut-off events. For 5174/6174 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 46597 event pairs, 498 based on Foata normal form. 340/7268 useless extension candidates. Maximal degree in co-relation 19543. Up to 1122 conditions per place. [2024-11-08 18:19:16,141 INFO L140 encePairwiseOnDemand]: 44/59 looper letters, 205 selfloop transitions, 29 changer transitions 0/252 dead transitions. [2024-11-08 18:19:16,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 252 transitions, 1420 flow [2024-11-08 18:19:16,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 18:19:16,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-08 18:19:16,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 552 transitions. [2024-11-08 18:19:16,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5503489531405783 [2024-11-08 18:19:16,144 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 294 flow. Second operand 17 states and 552 transitions. [2024-11-08 18:19:16,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 252 transitions, 1420 flow [2024-11-08 18:19:16,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 252 transitions, 1399 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 18:19:16,160 INFO L231 Difference]: Finished difference. Result has 93 places, 80 transitions, 400 flow [2024-11-08 18:19:16,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=400, PETRI_PLACES=93, PETRI_TRANSITIONS=80} [2024-11-08 18:19:16,161 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 37 predicate places. [2024-11-08 18:19:16,162 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 80 transitions, 400 flow [2024-11-08 18:19:16,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 23.526315789473685) internal successors, (447), 19 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 18:19:16,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:19:16,162 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-08 18:19:16,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 18:19:16,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-08 18:19:16,364 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 18:19:16,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:19:16,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1185725955, now seen corresponding path program 2 times [2024-11-08 18:19:16,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:19:16,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120531345] [2024-11-08 18:19:16,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:16,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:19:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:16,558 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 18:19:16,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:19:16,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120531345] [2024-11-08 18:19:16,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120531345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:19:16,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136447325] [2024-11-08 18:19:16,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:19:16,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:16,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:19:16,561 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:19:16,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:19:16,636 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 18:19:16,636 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:19:16,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:19:16,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:19:16,718 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 18:19:16,718 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:19:16,774 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 18:19:16,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136447325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:19:16,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:19:16,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 3, 3] total 13 [2024-11-08 18:19:16,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532962485] [2024-11-08 18:19:16,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:19:16,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 18:19:16,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:19:16,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 18:19:16,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:19:16,804 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 59 [2024-11-08 18:19:16,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 80 transitions, 400 flow. Second operand has 15 states, 15 states have (on average 29.533333333333335) internal successors, (443), 15 states have internal predecessors, (443), 0 states have call successors, (0), 0 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 18:19:16,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:19:16,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 59 [2024-11-08 18:19:16,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:19:17,668 INFO L124 PetriNetUnfolderBase]: 2614/4691 cut-off events. [2024-11-08 18:19:17,668 INFO L125 PetriNetUnfolderBase]: For 4400/4831 co-relation queries the response was YES. [2024-11-08 18:19:17,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12030 conditions, 4691 events. 2614/4691 cut-off events. For 4400/4831 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 31836 event pairs, 1624 based on Foata normal form. 111/4410 useless extension candidates. Maximal degree in co-relation 11944. Up to 3157 conditions per place. [2024-11-08 18:19:17,713 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 44 selfloop transitions, 20 changer transitions 0/95 dead transitions. [2024-11-08 18:19:17,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 95 transitions, 615 flow [2024-11-08 18:19:17,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 18:19:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-08 18:19:17,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 478 transitions. [2024-11-08 18:19:17,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5401129943502825 [2024-11-08 18:19:17,716 INFO L175 Difference]: Start difference. First operand has 93 places, 80 transitions, 400 flow. Second operand 15 states and 478 transitions. [2024-11-08 18:19:17,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 95 transitions, 615 flow [2024-11-08 18:19:17,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 95 transitions, 567 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-11-08 18:19:17,728 INFO L231 Difference]: Finished difference. Result has 98 places, 84 transitions, 429 flow [2024-11-08 18:19:17,728 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=429, PETRI_PLACES=98, PETRI_TRANSITIONS=84} [2024-11-08 18:19:17,729 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2024-11-08 18:19:17,730 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 84 transitions, 429 flow [2024-11-08 18:19:17,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 29.533333333333335) internal successors, (443), 15 states have internal predecessors, (443), 0 states have call successors, (0), 0 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 18:19:17,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:19:17,730 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:19:17,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 18:19:17,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 18:19:17,939 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 18:19:17,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:19:17,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1292015066, now seen corresponding path program 1 times [2024-11-08 18:19:17,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:19:17,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378494902] [2024-11-08 18:19:17,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:17,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:19:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:18,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:19:18,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:19:18,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378494902] [2024-11-08 18:19:18,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378494902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:19:18,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886872355] [2024-11-08 18:19:18,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:18,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:18,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:19:18,140 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:19:18,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:19:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:18,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 18:19:18,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:19:18,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:19:18,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:19:18,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:19:18,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886872355] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:19:18,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:19:18,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-08 18:19:18,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585447680] [2024-11-08 18:19:18,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:19:18,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 18:19:18,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:19:18,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 18:19:18,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:19:18,868 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-08 18:19:18,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 84 transitions, 429 flow. Second operand has 17 states, 17 states have (on average 25.941176470588236) internal successors, (441), 17 states have internal predecessors, (441), 0 states have call successors, (0), 0 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 18:19:18,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:19:18,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-08 18:19:18,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:19:19,849 INFO L124 PetriNetUnfolderBase]: 3706/6143 cut-off events. [2024-11-08 18:19:19,850 INFO L125 PetriNetUnfolderBase]: For 4158/4493 co-relation queries the response was YES. [2024-11-08 18:19:19,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15716 conditions, 6143 events. 3706/6143 cut-off events. For 4158/4493 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 39870 event pairs, 2077 based on Foata normal form. 0/5567 useless extension candidates. Maximal degree in co-relation 15559. Up to 3309 conditions per place. [2024-11-08 18:19:19,902 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 52 selfloop transitions, 14 changer transitions 46/135 dead transitions. [2024-11-08 18:19:19,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 135 transitions, 856 flow [2024-11-08 18:19:19,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:19:19,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 18:19:19,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 347 transitions. [2024-11-08 18:19:19,904 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5346687211093991 [2024-11-08 18:19:19,904 INFO L175 Difference]: Start difference. First operand has 98 places, 84 transitions, 429 flow. Second operand 11 states and 347 transitions. [2024-11-08 18:19:19,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 135 transitions, 856 flow [2024-11-08 18:19:19,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 135 transitions, 768 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-11-08 18:19:19,916 INFO L231 Difference]: Finished difference. Result has 99 places, 73 transitions, 344 flow [2024-11-08 18:19:19,916 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=344, PETRI_PLACES=99, PETRI_TRANSITIONS=73} [2024-11-08 18:19:19,917 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 43 predicate places. [2024-11-08 18:19:19,917 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 73 transitions, 344 flow [2024-11-08 18:19:19,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 25.941176470588236) internal successors, (441), 17 states have internal predecessors, (441), 0 states have call successors, (0), 0 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 18:19:19,917 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:19:19,918 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:19:19,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 18:19:20,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 18:19:20,123 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 18:19:20,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:19:20,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1320990938, now seen corresponding path program 1 times [2024-11-08 18:19:20,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:19:20,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285800383] [2024-11-08 18:19:20,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:20,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:19:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:20,230 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:19:20,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:19:20,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285800383] [2024-11-08 18:19:20,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285800383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:19:20,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489878890] [2024-11-08 18:19:20,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:20,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:20,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:19:20,233 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:19:20,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:19:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:20,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:19:20,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:19:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:19:20,350 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:19:20,396 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:19:20,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489878890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:19:20,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:19:20,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 18:19:20,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513866499] [2024-11-08 18:19:20,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:19:20,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 18:19:20,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:19:20,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 18:19:20,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:19:20,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 59 [2024-11-08 18:19:20,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 73 transitions, 344 flow. Second operand has 12 states, 12 states have (on average 31.916666666666668) internal successors, (383), 12 states have internal predecessors, (383), 0 states have call successors, (0), 0 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 18:19:20,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:19:20,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 59 [2024-11-08 18:19:20,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:19:21,409 INFO L124 PetriNetUnfolderBase]: 4692/8053 cut-off events. [2024-11-08 18:19:21,409 INFO L125 PetriNetUnfolderBase]: For 6976/7994 co-relation queries the response was YES. [2024-11-08 18:19:21,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20824 conditions, 8053 events. 4692/8053 cut-off events. For 6976/7994 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 51674 event pairs, 781 based on Foata normal form. 430/8316 useless extension candidates. Maximal degree in co-relation 20718. Up to 2304 conditions per place. [2024-11-08 18:19:21,468 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 173 selfloop transitions, 13 changer transitions 0/214 dead transitions. [2024-11-08 18:19:21,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 214 transitions, 1273 flow [2024-11-08 18:19:21,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 18:19:21,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 18:19:21,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 448 transitions. [2024-11-08 18:19:21,471 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7593220338983051 [2024-11-08 18:19:21,471 INFO L175 Difference]: Start difference. First operand has 99 places, 73 transitions, 344 flow. Second operand 10 states and 448 transitions. [2024-11-08 18:19:21,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 214 transitions, 1273 flow [2024-11-08 18:19:21,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 214 transitions, 1194 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-11-08 18:19:21,576 INFO L231 Difference]: Finished difference. Result has 91 places, 82 transitions, 386 flow [2024-11-08 18:19:21,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=386, PETRI_PLACES=91, PETRI_TRANSITIONS=82} [2024-11-08 18:19:21,577 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 35 predicate places. [2024-11-08 18:19:21,577 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 82 transitions, 386 flow [2024-11-08 18:19:21,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 31.916666666666668) internal successors, (383), 12 states have internal predecessors, (383), 0 states have call successors, (0), 0 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 18:19:21,578 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:19:21,582 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:19:21,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 18:19:21,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 18:19:21,783 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 18:19:21,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:19:21,784 INFO L85 PathProgramCache]: Analyzing trace with hash 462843712, now seen corresponding path program 2 times [2024-11-08 18:19:21,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:19:21,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834780618] [2024-11-08 18:19:21,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:21,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:19:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:21,937 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:19:21,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:19:21,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834780618] [2024-11-08 18:19:21,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834780618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:19:21,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527798324] [2024-11-08 18:19:21,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:19:21,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:21,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:19:21,941 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:19:21,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 18:19:22,035 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:19:22,036 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:19:22,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 18:19:22,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:19:22,079 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:19:22,079 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:19:22,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527798324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:19:22,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:19:22,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-08 18:19:22,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817285801] [2024-11-08 18:19:22,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:19:22,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:19:22,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:19:22,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:19:22,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:19:22,107 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 59 [2024-11-08 18:19:22,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 82 transitions, 386 flow. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:19:22,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:19:22,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 59 [2024-11-08 18:19:22,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:19:23,066 INFO L124 PetriNetUnfolderBase]: 5408/8625 cut-off events. [2024-11-08 18:19:23,066 INFO L125 PetriNetUnfolderBase]: For 8994/9484 co-relation queries the response was YES. [2024-11-08 18:19:23,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23878 conditions, 8625 events. 5408/8625 cut-off events. For 8994/9484 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 54472 event pairs, 573 based on Foata normal form. 166/8536 useless extension candidates. Maximal degree in co-relation 23785. Up to 2995 conditions per place. [2024-11-08 18:19:23,112 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 87 selfloop transitions, 7 changer transitions 0/123 dead transitions. [2024-11-08 18:19:23,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 123 transitions, 796 flow [2024-11-08 18:19:23,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:19:23,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:19:23,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-11-08 18:19:23,114 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7076271186440678 [2024-11-08 18:19:23,114 INFO L175 Difference]: Start difference. First operand has 91 places, 82 transitions, 386 flow. Second operand 4 states and 167 transitions. [2024-11-08 18:19:23,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 123 transitions, 796 flow [2024-11-08 18:19:23,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 123 transitions, 767 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-08 18:19:23,217 INFO L231 Difference]: Finished difference. Result has 91 places, 81 transitions, 385 flow [2024-11-08 18:19:23,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=385, PETRI_PLACES=91, PETRI_TRANSITIONS=81} [2024-11-08 18:19:23,218 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 35 predicate places. [2024-11-08 18:19:23,218 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 81 transitions, 385 flow [2024-11-08 18:19:23,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:19:23,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:19:23,218 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:19:23,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 18:19:23,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 18:19:23,420 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 18:19:23,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:19:23,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1463253689, now seen corresponding path program 1 times [2024-11-08 18:19:23,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:19:23,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371585984] [2024-11-08 18:19:23,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:23,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:19:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:23,534 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:19:23,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:19:23,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371585984] [2024-11-08 18:19:23,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371585984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:19:23,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693022901] [2024-11-08 18:19:23,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:23,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:23,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:19:23,537 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:19:23,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 18:19:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:23,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 18:19:23,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:19:23,873 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:19:23,874 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:19:24,134 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:19:24,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693022901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:19:24,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:19:24,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 25 [2024-11-08 18:19:24,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954406222] [2024-11-08 18:19:24,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:19:24,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 18:19:24,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:19:24,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 18:19:24,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2024-11-08 18:19:24,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 59 [2024-11-08 18:19:24,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 81 transitions, 385 flow. Second operand has 25 states, 25 states have (on average 23.48) internal successors, (587), 25 states have internal predecessors, (587), 0 states have call successors, (0), 0 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 18:19:24,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:19:24,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 59 [2024-11-08 18:19:24,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:19:27,849 INFO L124 PetriNetUnfolderBase]: 15790/22914 cut-off events. [2024-11-08 18:19:27,849 INFO L125 PetriNetUnfolderBase]: For 26468/28510 co-relation queries the response was YES. [2024-11-08 18:19:27,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68420 conditions, 22914 events. 15790/22914 cut-off events. For 26468/28510 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 145870 event pairs, 3176 based on Foata normal form. 336/22806 useless extension candidates. Maximal degree in co-relation 55685. Up to 4892 conditions per place. [2024-11-08 18:19:28,009 INFO L140 encePairwiseOnDemand]: 45/59 looper letters, 323 selfloop transitions, 34 changer transitions 5/384 dead transitions. [2024-11-08 18:19:28,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 384 transitions, 2578 flow [2024-11-08 18:19:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 18:19:28,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-08 18:19:28,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 692 transitions. [2024-11-08 18:19:28,014 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5331278890600925 [2024-11-08 18:19:28,014 INFO L175 Difference]: Start difference. First operand has 91 places, 81 transitions, 385 flow. Second operand 22 states and 692 transitions. [2024-11-08 18:19:28,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 384 transitions, 2578 flow [2024-11-08 18:19:28,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 384 transitions, 2548 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 18:19:28,330 INFO L231 Difference]: Finished difference. Result has 114 places, 98 transitions, 547 flow [2024-11-08 18:19:28,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=547, PETRI_PLACES=114, PETRI_TRANSITIONS=98} [2024-11-08 18:19:28,332 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 58 predicate places. [2024-11-08 18:19:28,332 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 98 transitions, 547 flow [2024-11-08 18:19:28,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 23.48) internal successors, (587), 25 states have internal predecessors, (587), 0 states have call successors, (0), 0 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 18:19:28,333 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:19:28,333 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:19:28,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 18:19:28,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 18:19:28,537 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 18:19:28,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:19:28,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1021156473, now seen corresponding path program 2 times [2024-11-08 18:19:28,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:19:28,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157103692] [2024-11-08 18:19:28,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:28,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:19:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:28,978 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:19:28,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:19:28,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157103692] [2024-11-08 18:19:28,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157103692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:19:28,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908019563] [2024-11-08 18:19:28,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:19:28,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:28,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:19:28,982 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:19:28,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 18:19:29,069 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 18:19:29,070 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:19:29,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 18:19:29,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:19:29,170 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 18:19:29,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:19:29,256 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 18:19:29,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908019563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:19:29,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:19:29,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 3, 3] total 18 [2024-11-08 18:19:29,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484783021] [2024-11-08 18:19:29,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:19:29,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 18:19:29,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:19:29,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 18:19:29,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:19:29,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 59 [2024-11-08 18:19:29,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 98 transitions, 547 flow. Second operand has 19 states, 19 states have (on average 23.63157894736842) internal successors, (449), 19 states have internal predecessors, (449), 0 states have call successors, (0), 0 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 18:19:29,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:19:29,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 59 [2024-11-08 18:19:29,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:19:34,604 INFO L124 PetriNetUnfolderBase]: 23409/34218 cut-off events. [2024-11-08 18:19:34,605 INFO L125 PetriNetUnfolderBase]: For 42188/44597 co-relation queries the response was YES. [2024-11-08 18:19:34,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109039 conditions, 34218 events. 23409/34218 cut-off events. For 42188/44597 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 236188 event pairs, 3035 based on Foata normal form. 166/33946 useless extension candidates. Maximal degree in co-relation 88789. Up to 5990 conditions per place. [2024-11-08 18:19:34,874 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 291 selfloop transitions, 51 changer transitions 13/377 dead transitions. [2024-11-08 18:19:34,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 377 transitions, 2652 flow [2024-11-08 18:19:34,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 18:19:34,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-08 18:19:34,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 721 transitions. [2024-11-08 18:19:34,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.509180790960452 [2024-11-08 18:19:34,878 INFO L175 Difference]: Start difference. First operand has 114 places, 98 transitions, 547 flow. Second operand 24 states and 721 transitions. [2024-11-08 18:19:34,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 377 transitions, 2652 flow [2024-11-08 18:19:35,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 377 transitions, 2595 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-11-08 18:19:35,798 INFO L231 Difference]: Finished difference. Result has 132 places, 113 transitions, 725 flow [2024-11-08 18:19:35,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=725, PETRI_PLACES=132, PETRI_TRANSITIONS=113} [2024-11-08 18:19:35,799 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 76 predicate places. [2024-11-08 18:19:35,799 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 113 transitions, 725 flow [2024-11-08 18:19:35,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 23.63157894736842) internal successors, (449), 19 states have internal predecessors, (449), 0 states have call successors, (0), 0 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 18:19:35,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:19:35,800 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 18:19:35,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 18:19:36,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:36,000 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 18:19:36,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:19:36,001 INFO L85 PathProgramCache]: Analyzing trace with hash 776212376, now seen corresponding path program 2 times [2024-11-08 18:19:36,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:19:36,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875826025] [2024-11-08 18:19:36,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:36,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:19:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:36,194 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 18:19:36,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:19:36,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875826025] [2024-11-08 18:19:36,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875826025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:19:36,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049069741] [2024-11-08 18:19:36,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:19:36,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:36,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:19:36,197 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:19:36,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 18:19:36,280 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 18:19:36,280 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:19:36,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 18:19:36,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:19:36,375 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-08 18:19:36,376 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:19:36,441 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-08 18:19:36,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049069741] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:19:36,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:19:36,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2024-11-08 18:19:36,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60977792] [2024-11-08 18:19:36,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:19:36,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 18:19:36,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:19:36,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 18:19:36,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-08 18:19:36,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 59 [2024-11-08 18:19:36,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 113 transitions, 725 flow. Second operand has 13 states, 13 states have (on average 24.0) internal successors, (312), 13 states have internal predecessors, (312), 0 states have call successors, (0), 0 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 18:19:36,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:19:36,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 59 [2024-11-08 18:19:36,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:19:41,994 INFO L124 PetriNetUnfolderBase]: 29345/43538 cut-off events. [2024-11-08 18:19:41,994 INFO L125 PetriNetUnfolderBase]: For 82434/91939 co-relation queries the response was YES. [2024-11-08 18:19:42,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139735 conditions, 43538 events. 29345/43538 cut-off events. For 82434/91939 co-relation queries the response was YES. Maximal size of possible extension queue 907. Compared 300703 event pairs, 4896 based on Foata normal form. 1058/43912 useless extension candidates. Maximal degree in co-relation 108354. Up to 13577 conditions per place. [2024-11-08 18:19:42,213 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 0 selfloop transitions, 0 changer transitions 339/339 dead transitions. [2024-11-08 18:19:42,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 339 transitions, 2661 flow [2024-11-08 18:19:42,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 18:19:42,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-08 18:19:42,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 526 transitions. [2024-11-08 18:19:42,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5244267198404786 [2024-11-08 18:19:42,216 INFO L175 Difference]: Start difference. First operand has 132 places, 113 transitions, 725 flow. Second operand 17 states and 526 transitions. [2024-11-08 18:19:42,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 339 transitions, 2661 flow [2024-11-08 18:19:42,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 339 transitions, 2536 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-11-08 18:19:42,640 INFO L231 Difference]: Finished difference. Result has 132 places, 0 transitions, 0 flow [2024-11-08 18:19:42,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=0, PETRI_PLACES=132, PETRI_TRANSITIONS=0} [2024-11-08 18:19:42,641 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 76 predicate places. [2024-11-08 18:19:42,641 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 0 transitions, 0 flow [2024-11-08 18:19:42,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 24.0) internal successors, (312), 13 states have internal predecessors, (312), 0 states have call successors, (0), 0 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 18:19:42,645 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2024-11-08 18:19:42,645 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-08 18:19:42,646 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-08 18:19:42,646 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-08 18:19:42,646 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-08 18:19:42,646 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-08 18:19:42,647 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-08 18:19:42,647 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-08 18:19:42,647 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2024-11-08 18:19:42,647 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2024-11-08 18:19:42,647 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2024-11-08 18:19:42,648 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-08 18:19:42,648 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-08 18:19:42,648 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-08 18:19:42,648 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-08 18:19:42,649 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-08 18:19:42,649 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-08 18:19:42,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 18:19:42,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:42,850 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:19:42,863 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-08 18:19:42,863 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 18:19:42,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 06:19:42 BasicIcfg [2024-11-08 18:19:42,877 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 18:19:42,878 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 18:19:42,878 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 18:19:42,879 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 18:19:42,879 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:19:06" (3/4) ... [2024-11-08 18:19:42,882 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 18:19:42,886 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-08 18:19:42,886 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-08 18:19:42,886 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-08 18:19:42,892 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 89 nodes and edges [2024-11-08 18:19:42,893 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-11-08 18:19:42,893 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-08 18:19:42,893 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-08 18:19:42,999 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/witness.graphml [2024-11-08 18:19:42,999 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/witness.yml [2024-11-08 18:19:43,000 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 18:19:43,000 INFO L158 Benchmark]: Toolchain (without parser) took 37656.71ms. Allocated memory was 142.6MB in the beginning and 9.5GB in the end (delta: 9.3GB). Free memory was 94.4MB in the beginning and 8.2GB in the end (delta: -8.1GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-11-08 18:19:43,001 INFO L158 Benchmark]: CDTParser took 1.20ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 105.8MB in the end (delta: 29.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 18:19:43,001 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.01ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 81.1MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 18:19:43,001 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.04ms. Allocated memory is still 142.6MB. Free memory was 80.6MB in the beginning and 79.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 18:19:43,002 INFO L158 Benchmark]: Boogie Preprocessor took 65.35ms. Allocated memory is still 142.6MB. Free memory was 79.3MB in the beginning and 76.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 18:19:43,002 INFO L158 Benchmark]: RCFGBuilder took 940.28ms. Allocated memory was 142.6MB in the beginning and 192.9MB in the end (delta: 50.3MB). Free memory was 76.4MB in the beginning and 143.9MB in the end (delta: -67.4MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. [2024-11-08 18:19:43,002 INFO L158 Benchmark]: TraceAbstraction took 36147.63ms. Allocated memory was 192.9MB in the beginning and 9.5GB in the end (delta: 9.3GB). Free memory was 142.7MB in the beginning and 8.2GB in the end (delta: -8.1GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-11-08 18:19:43,003 INFO L158 Benchmark]: Witness Printer took 121.69ms. Allocated memory is still 9.5GB. Free memory was 8.2GB in the beginning and 8.2GB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-08 18:19:43,005 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.20ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 105.8MB in the end (delta: 29.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 325.01ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 81.1MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.04ms. Allocated memory is still 142.6MB. Free memory was 80.6MB in the beginning and 79.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 65.35ms. Allocated memory is still 142.6MB. Free memory was 79.3MB in the beginning and 76.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 940.28ms. Allocated memory was 142.6MB in the beginning and 192.9MB in the end (delta: 50.3MB). Free memory was 76.4MB in the beginning and 143.9MB in the end (delta: -67.4MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. * TraceAbstraction took 36147.63ms. Allocated memory was 192.9MB in the beginning and 9.5GB in the end (delta: 9.3GB). Free memory was 142.7MB in the beginning and 8.2GB in the end (delta: -8.1GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 121.69ms. Allocated memory is still 9.5GB. Free memory was 8.2GB in the beginning and 8.2GB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 88 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 36.0s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 27.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2875 SdHoareTripleChecker+Valid, 6.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2642 mSDsluCounter, 2398 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2224 mSDsCounter, 116 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9392 IncrementalHoareTripleChecker+Invalid, 9508 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 116 mSolverCounterUnsat, 174 mSDtfsCounter, 9392 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 626 GetRequests, 375 SyntacticMatches, 10 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=725occurred in iteration=15, InterpolantAutomatonStates: 163, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 572 NumberOfCodeBlocks, 500 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 741 ConstructedInterpolants, 0 QuantifiedInterpolants, 2394 SizeOfPredicates, 44 NumberOfNonLiveVariables, 1186 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 35 InterpolantComputations, 8 PerfectInterpolantSequences, 333/568 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-08 18:19:43,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156248d4-2733-4ee5-a4f4-56b8414d37aa/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE