./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3c66e95d4d33d89eed9ab2f285249dafeef639a3ca9f6d879b87b944d1b8c0ce --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:17:27,536 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:17:27,620 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:17:27,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:17:27,629 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:17:27,666 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:17:27,669 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:17:27,669 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:17:27,670 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:17:27,671 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:17:27,672 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:17:27,672 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:17:27,673 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:17:27,673 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:17:27,676 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:17:27,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:17:27,677 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:17:27,677 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:17:27,677 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:17:27,678 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:17:27,678 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:17:27,682 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:17:27,682 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:17:27,682 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:17:27,683 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:17:27,683 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:17:27,683 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:17:27,683 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:17:27,684 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:17:27,684 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:17:27,684 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:17:27,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:17:27,685 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:17:27,685 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:17:27,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:17:27,685 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:17:27,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:17:27,686 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:17:27,687 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:17:27,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:17:27,687 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:17:27,688 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:17:27,688 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:17:27,688 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:17:27,688 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_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c66e95d4d33d89eed9ab2f285249dafeef639a3ca9f6d879b87b944d1b8c0ce [2024-10-31 22:17:27,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:17:28,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:17:28,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:17:28,007 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:17:28,008 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:17:28,009 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c Unable to find full path for "g++" [2024-10-31 22:17:30,263 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:17:30,453 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:17:30,454 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-10-31 22:17:30,462 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/data/8a41a7fd6/c863f292ba1f4eaf9c2d602c6804d150/FLAGe89d0dcb2 [2024-10-31 22:17:30,474 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/data/8a41a7fd6/c863f292ba1f4eaf9c2d602c6804d150 [2024-10-31 22:17:30,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:17:30,479 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:17:30,480 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:17:30,481 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:17:30,492 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:17:30,493 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:17:30" (1/1) ... [2024-10-31 22:17:30,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4266b8a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:30, skipping insertion in model container [2024-10-31 22:17:30,497 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:17:30" (1/1) ... [2024-10-31 22:17:30,527 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:17:30,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:30,776 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:17:30,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:30,817 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:17:30,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:30 WrapperNode [2024-10-31 22:17:30,818 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:17:30,819 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:30,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:17:30,820 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:17:30,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:30" (1/1) ... [2024-10-31 22:17:30,837 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:30" (1/1) ... [2024-10-31 22:17:30,857 INFO L138 Inliner]: procedures = 20, calls = 16, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 75 [2024-10-31 22:17:30,858 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:30,860 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:17:30,861 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:17:30,861 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:17:30,873 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:30" (1/1) ... [2024-10-31 22:17:30,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:30" (1/1) ... [2024-10-31 22:17:30,876 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:30" (1/1) ... [2024-10-31 22:17:30,891 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:17:30,891 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:30" (1/1) ... [2024-10-31 22:17:30,892 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:30" (1/1) ... [2024-10-31 22:17:30,896 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:30" (1/1) ... [2024-10-31 22:17:30,904 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:30" (1/1) ... [2024-10-31 22:17:30,905 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:30" (1/1) ... [2024-10-31 22:17:30,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:30" (1/1) ... [2024-10-31 22:17:30,913 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:17:30,914 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:17:30,914 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:17:30,914 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:17:30,915 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:30" (1/1) ... [2024-10-31 22:17:30,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:17:30,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:30,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:30,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:17:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:17:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:17:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:17:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:17:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:17:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:17:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:17:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:17:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:17:30,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:17:30,979 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:17:31,064 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:17:31,067 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:17:31,297 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:17:31,297 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:17:31,497 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:17:31,497 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:17:31,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:31 BoogieIcfgContainer [2024-10-31 22:17:31,499 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:17:31,503 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:17:31,503 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:17:31,506 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:17:31,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:17:30" (1/3) ... [2024-10-31 22:17:31,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ec8d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:17:31, skipping insertion in model container [2024-10-31 22:17:31,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:30" (2/3) ... [2024-10-31 22:17:31,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ec8d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:17:31, skipping insertion in model container [2024-10-31 22:17:31,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:31" (3/3) ... [2024-10-31 22:17:31,509 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2024-10-31 22:17:31,524 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:17:31,524 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-31 22:17:31,524 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:17:31,623 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:17:31,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 35 transitions, 84 flow [2024-10-31 22:17:31,709 INFO L124 PetriNetUnfolderBase]: 2/33 cut-off events. [2024-10-31 22:17:31,709 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:17:31,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 2/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 75 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-10-31 22:17:31,713 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 35 transitions, 84 flow [2024-10-31 22:17:31,717 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 76 flow [2024-10-31 22:17:31,728 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:17:31,735 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;@2e2ad28b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:17:31,735 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-10-31 22:17:31,741 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:17:31,742 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-31 22:17:31,742 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:17:31,742 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:31,743 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:17:31,744 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-31 22:17:31,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:31,754 INFO L85 PathProgramCache]: Analyzing trace with hash 279617358, now seen corresponding path program 1 times [2024-10-31 22:17:31,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:31,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470624416] [2024-10-31 22:17:31,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:31,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:32,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:32,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:32,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470624416] [2024-10-31 22:17:32,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470624416] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:32,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:32,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:17:32,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136453645] [2024-10-31 22:17:32,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:32,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:17:32,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:32,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:17:32,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:17:32,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-10-31 22:17:32,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:32,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:32,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-10-31 22:17:32,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:32,336 INFO L124 PetriNetUnfolderBase]: 120/297 cut-off events. [2024-10-31 22:17:32,336 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-31 22:17:32,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 297 events. 120/297 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1342 event pairs, 40 based on Foata normal form. 4/244 useless extension candidates. Maximal degree in co-relation 484. Up to 165 conditions per place. [2024-10-31 22:17:32,342 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 25 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2024-10-31 22:17:32,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 155 flow [2024-10-31 22:17:32,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:17:32,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:17:32,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-10-31 22:17:32,359 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7428571428571429 [2024-10-31 22:17:32,361 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 76 flow. Second operand 3 states and 78 transitions. [2024-10-31 22:17:32,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 155 flow [2024-10-31 22:17:32,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 141 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:17:32,370 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 84 flow [2024-10-31 22:17:32,372 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2024-10-31 22:17:32,378 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2024-10-31 22:17:32,378 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 84 flow [2024-10-31 22:17:32,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:32,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:32,379 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:32,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:17:32,381 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-31 22:17:32,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:32,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1870647887, now seen corresponding path program 1 times [2024-10-31 22:17:32,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:32,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450673554] [2024-10-31 22:17:32,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:32,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:32,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:32,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:32,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450673554] [2024-10-31 22:17:32,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450673554] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:32,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:32,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:17:32,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838713261] [2024-10-31 22:17:32,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:32,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:17:32,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:32,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:17:32,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:17:32,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-31 22:17:32,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:32,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:32,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-31 22:17:32,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:32,795 INFO L124 PetriNetUnfolderBase]: 205/415 cut-off events. [2024-10-31 22:17:32,796 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-10-31 22:17:32,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 888 conditions, 415 events. 205/415 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1943 event pairs, 103 based on Foata normal form. 12/361 useless extension candidates. Maximal degree in co-relation 443. Up to 290 conditions per place. [2024-10-31 22:17:32,801 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 37 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2024-10-31 22:17:32,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 51 transitions, 214 flow [2024-10-31 22:17:32,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:17:32,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:17:32,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-10-31 22:17:32,804 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-31 22:17:32,804 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 84 flow. Second operand 4 states and 91 transitions. [2024-10-31 22:17:32,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 51 transitions, 214 flow [2024-10-31 22:17:32,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:17:32,810 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 111 flow [2024-10-31 22:17:32,812 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-10-31 22:17:32,813 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2024-10-31 22:17:32,814 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 111 flow [2024-10-31 22:17:32,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:32,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:32,814 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:32,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:17:32,815 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-31 22:17:32,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:32,817 INFO L85 PathProgramCache]: Analyzing trace with hash -998275543, now seen corresponding path program 1 times [2024-10-31 22:17:32,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:32,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312308184] [2024-10-31 22:17:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:32,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:32,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:32,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312308184] [2024-10-31 22:17:32,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312308184] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:32,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:32,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:17:32,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46336457] [2024-10-31 22:17:32,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:32,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:17:32,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:32,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:17:32,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:17:32,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-10-31 22:17:32,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:32,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:32,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-10-31 22:17:32,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:33,164 INFO L124 PetriNetUnfolderBase]: 211/560 cut-off events. [2024-10-31 22:17:33,164 INFO L125 PetriNetUnfolderBase]: For 139/151 co-relation queries the response was YES. [2024-10-31 22:17:33,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1219 conditions, 560 events. 211/560 cut-off events. For 139/151 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3043 event pairs, 53 based on Foata normal form. 15/504 useless extension candidates. Maximal degree in co-relation 410. Up to 138 conditions per place. [2024-10-31 22:17:33,171 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 40 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2024-10-31 22:17:33,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 60 transitions, 278 flow [2024-10-31 22:17:33,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:17:33,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:17:33,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-10-31 22:17:33,174 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2024-10-31 22:17:33,174 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 111 flow. Second operand 4 states and 108 transitions. [2024-10-31 22:17:33,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 60 transitions, 278 flow [2024-10-31 22:17:33,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 60 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:17:33,179 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 166 flow [2024-10-31 22:17:33,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-10-31 22:17:33,180 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2024-10-31 22:17:33,180 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 166 flow [2024-10-31 22:17:33,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:33,180 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:33,181 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:33,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:17:33,181 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-31 22:17:33,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:33,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1270229465, now seen corresponding path program 1 times [2024-10-31 22:17:33,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:33,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454255748] [2024-10-31 22:17:33,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:33,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:33,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:33,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:33,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454255748] [2024-10-31 22:17:33,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454255748] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:33,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365601581] [2024-10-31 22:17:33,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:33,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:33,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:33,317 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:33,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:17:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:33,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:17:33,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:33,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:33,441 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:17:33,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365601581] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:33,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:17:33,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-10-31 22:17:33,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455779488] [2024-10-31 22:17:33,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:33,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:17:33,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:33,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:17:33,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:17:33,445 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-10-31 22:17:33,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:33,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:33,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-10-31 22:17:33,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:33,614 INFO L124 PetriNetUnfolderBase]: 233/575 cut-off events. [2024-10-31 22:17:33,615 INFO L125 PetriNetUnfolderBase]: For 629/652 co-relation queries the response was YES. [2024-10-31 22:17:33,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 575 events. 233/575 cut-off events. For 629/652 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2965 event pairs, 57 based on Foata normal form. 34/561 useless extension candidates. Maximal degree in co-relation 650. Up to 235 conditions per place. [2024-10-31 22:17:33,622 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 30 selfloop transitions, 8 changer transitions 0/52 dead transitions. [2024-10-31 22:17:33,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 52 transitions, 287 flow [2024-10-31 22:17:33,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:17:33,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:17:33,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-10-31 22:17:33,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2024-10-31 22:17:33,628 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 166 flow. Second operand 4 states and 93 transitions. [2024-10-31 22:17:33,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 52 transitions, 287 flow [2024-10-31 22:17:33,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 281 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-31 22:17:33,634 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 213 flow [2024-10-31 22:17:33,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=213, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-10-31 22:17:33,636 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-10-31 22:17:33,638 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 213 flow [2024-10-31 22:17:33,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:33,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:33,639 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:33,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:17:33,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:33,840 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-31 22:17:33,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:33,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1433182473, now seen corresponding path program 1 times [2024-10-31 22:17:33,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:33,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606998825] [2024-10-31 22:17:33,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:33,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:33,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:33,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:33,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606998825] [2024-10-31 22:17:33,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606998825] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:33,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:33,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:17:33,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187331143] [2024-10-31 22:17:33,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:33,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:17:33,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:33,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:17:33,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:17:33,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-31 22:17:33,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:33,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:33,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-31 22:17:33,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:34,157 INFO L124 PetriNetUnfolderBase]: 507/1061 cut-off events. [2024-10-31 22:17:34,157 INFO L125 PetriNetUnfolderBase]: For 2033/2132 co-relation queries the response was YES. [2024-10-31 22:17:34,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2976 conditions, 1061 events. 507/1061 cut-off events. For 2033/2132 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5841 event pairs, 257 based on Foata normal form. 45/1050 useless extension candidates. Maximal degree in co-relation 1017. Up to 649 conditions per place. [2024-10-31 22:17:34,167 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 57 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2024-10-31 22:17:34,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 72 transitions, 541 flow [2024-10-31 22:17:34,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:17:34,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:17:34,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-10-31 22:17:34,171 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-10-31 22:17:34,171 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 213 flow. Second operand 4 states and 88 transitions. [2024-10-31 22:17:34,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 72 transitions, 541 flow [2024-10-31 22:17:34,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 496 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-10-31 22:17:34,182 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 221 flow [2024-10-31 22:17:34,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-10-31 22:17:34,184 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2024-10-31 22:17:34,185 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 221 flow [2024-10-31 22:17:34,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:34,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:34,186 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:34,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:17:34,187 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-31 22:17:34,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:34,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1546690069, now seen corresponding path program 1 times [2024-10-31 22:17:34,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:34,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856197924] [2024-10-31 22:17:34,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:34,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:34,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:34,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:34,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856197924] [2024-10-31 22:17:34,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856197924] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:34,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:34,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:17:34,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289175187] [2024-10-31 22:17:34,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:34,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:17:34,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:34,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:17:34,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:17:34,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-31 22:17:34,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:34,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:34,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-31 22:17:34,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:34,401 INFO L124 PetriNetUnfolderBase]: 323/702 cut-off events. [2024-10-31 22:17:34,401 INFO L125 PetriNetUnfolderBase]: For 1114/1204 co-relation queries the response was YES. [2024-10-31 22:17:34,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2142 conditions, 702 events. 323/702 cut-off events. For 1114/1204 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3683 event pairs, 219 based on Foata normal form. 32/689 useless extension candidates. Maximal degree in co-relation 969. Up to 559 conditions per place. [2024-10-31 22:17:34,409 INFO L140 encePairwiseOnDemand]: 33/35 looper letters, 29 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2024-10-31 22:17:34,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 279 flow [2024-10-31 22:17:34,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:17:34,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:17:34,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-10-31 22:17:34,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5523809523809524 [2024-10-31 22:17:34,411 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 221 flow. Second operand 3 states and 58 transitions. [2024-10-31 22:17:34,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 279 flow [2024-10-31 22:17:34,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 43 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:17:34,417 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 218 flow [2024-10-31 22:17:34,417 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2024-10-31 22:17:34,418 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2024-10-31 22:17:34,419 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 218 flow [2024-10-31 22:17:34,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:34,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:34,420 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:34,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:17:34,420 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-31 22:17:34,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:34,421 INFO L85 PathProgramCache]: Analyzing trace with hash -919793078, now seen corresponding path program 1 times [2024-10-31 22:17:34,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:34,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147144497] [2024-10-31 22:17:34,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:34,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:34,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:34,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:34,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147144497] [2024-10-31 22:17:34,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147144497] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:34,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035787207] [2024-10-31 22:17:34,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:34,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:34,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:34,521 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:34,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:17:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:34,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:17:34,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:34,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:34,631 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:17:34,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035787207] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:34,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:17:34,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-31 22:17:34,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519164504] [2024-10-31 22:17:34,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:34,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:17:34,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:34,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:17:34,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:17:34,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-31 22:17:34,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:34,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:34,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-31 22:17:34,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:34,933 INFO L124 PetriNetUnfolderBase]: 463/968 cut-off events. [2024-10-31 22:17:34,933 INFO L125 PetriNetUnfolderBase]: For 1283/1348 co-relation queries the response was YES. [2024-10-31 22:17:34,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2808 conditions, 968 events. 463/968 cut-off events. For 1283/1348 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5101 event pairs, 69 based on Foata normal form. 69/986 useless extension candidates. Maximal degree in co-relation 2789. Up to 305 conditions per place. [2024-10-31 22:17:34,941 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 67 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2024-10-31 22:17:34,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 84 transitions, 566 flow [2024-10-31 22:17:34,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:17:34,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:17:34,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-10-31 22:17:34,943 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-31 22:17:34,944 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 218 flow. Second operand 6 states and 126 transitions. [2024-10-31 22:17:34,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 84 transitions, 566 flow [2024-10-31 22:17:34,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 84 transitions, 565 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:17:34,949 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 227 flow [2024-10-31 22:17:34,950 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-10-31 22:17:34,950 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 17 predicate places. [2024-10-31 22:17:34,951 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 227 flow [2024-10-31 22:17:34,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:34,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:34,951 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:34,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:17:35,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-31 22:17:35,152 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-31 22:17:35,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:35,152 INFO L85 PathProgramCache]: Analyzing trace with hash -148096930, now seen corresponding path program 1 times [2024-10-31 22:17:35,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:35,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191801107] [2024-10-31 22:17:35,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:35,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:35,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:35,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:35,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191801107] [2024-10-31 22:17:35,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191801107] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:35,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:35,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:17:35,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600983825] [2024-10-31 22:17:35,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:35,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:17:35,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:35,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:17:35,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:17:35,209 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-31 22:17:35,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:35,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:35,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-31 22:17:35,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:35,321 INFO L124 PetriNetUnfolderBase]: 323/723 cut-off events. [2024-10-31 22:17:35,321 INFO L125 PetriNetUnfolderBase]: For 1266/1315 co-relation queries the response was YES. [2024-10-31 22:17:35,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2245 conditions, 723 events. 323/723 cut-off events. For 1266/1315 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3766 event pairs, 219 based on Foata normal form. 17/707 useless extension candidates. Maximal degree in co-relation 2226. Up to 554 conditions per place. [2024-10-31 22:17:35,327 INFO L140 encePairwiseOnDemand]: 33/35 looper letters, 26 selfloop transitions, 1 changer transitions 3/41 dead transitions. [2024-10-31 22:17:35,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 41 transitions, 283 flow [2024-10-31 22:17:35,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:17:35,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:17:35,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-10-31 22:17:35,328 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-10-31 22:17:35,328 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 227 flow. Second operand 3 states and 57 transitions. [2024-10-31 22:17:35,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 41 transitions, 283 flow [2024-10-31 22:17:35,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 41 transitions, 268 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-31 22:17:35,331 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 204 flow [2024-10-31 22:17:35,332 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2024-10-31 22:17:35,332 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2024-10-31 22:17:35,332 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 204 flow [2024-10-31 22:17:35,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:35,333 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:35,333 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-31 22:17:35,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:17:35,333 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-31 22:17:35,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:35,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1551185963, now seen corresponding path program 1 times [2024-10-31 22:17:35,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:35,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366187503] [2024-10-31 22:17:35,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:35,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:35,395 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:35,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:35,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366187503] [2024-10-31 22:17:35,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366187503] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:35,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310437560] [2024-10-31 22:17:35,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:35,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:35,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:35,398 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:35,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:17:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:35,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:17:35,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:35,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:17:35,583 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:35,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310437560] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:17:35,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:17:35,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-31 22:17:35,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006782782] [2024-10-31 22:17:35,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:17:35,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:17:35,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:35,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:17:35,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:17:35,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-31 22:17:35,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 204 flow. Second operand has 12 states, 12 states have (on average 13.666666666666666) internal successors, (164), 12 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:35,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:35,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-31 22:17:35,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:36,201 INFO L124 PetriNetUnfolderBase]: 1022/2112 cut-off events. [2024-10-31 22:17:36,202 INFO L125 PetriNetUnfolderBase]: For 3466/3630 co-relation queries the response was YES. [2024-10-31 22:17:36,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6128 conditions, 2112 events. 1022/2112 cut-off events. For 3466/3630 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 11962 event pairs, 194 based on Foata normal form. 158/2260 useless extension candidates. Maximal degree in co-relation 6109. Up to 744 conditions per place. [2024-10-31 22:17:36,221 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 135 selfloop transitions, 11 changer transitions 1/155 dead transitions. [2024-10-31 22:17:36,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 155 transitions, 1132 flow [2024-10-31 22:17:36,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:17:36,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:17:36,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 220 transitions. [2024-10-31 22:17:36,223 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-10-31 22:17:36,223 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 204 flow. Second operand 10 states and 220 transitions. [2024-10-31 22:17:36,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 155 transitions, 1132 flow [2024-10-31 22:17:36,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 155 transitions, 1131 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:17:36,230 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 279 flow [2024-10-31 22:17:36,231 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=279, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2024-10-31 22:17:36,232 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 23 predicate places. [2024-10-31 22:17:36,232 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 279 flow [2024-10-31 22:17:36,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.666666666666666) internal successors, (164), 12 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:36,232 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:36,233 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:36,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:17:36,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:36,438 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-31 22:17:36,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:36,442 INFO L85 PathProgramCache]: Analyzing trace with hash -390193898, now seen corresponding path program 1 times [2024-10-31 22:17:36,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:36,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341842464] [2024-10-31 22:17:36,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:36,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:36,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:36,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341842464] [2024-10-31 22:17:36,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341842464] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:36,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897969020] [2024-10-31 22:17:36,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:36,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:36,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:36,531 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:36,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:17:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:36,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:17:36,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:36,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:36,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:17:36,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:36,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897969020] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:17:36,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:17:36,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-10-31 22:17:36,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409738811] [2024-10-31 22:17:36,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:17:36,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:17:36,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:36,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:17:36,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:17:36,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-10-31 22:17:36,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 279 flow. Second operand has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:36,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:36,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-10-31 22:17:36,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:37,224 INFO L124 PetriNetUnfolderBase]: 826/2106 cut-off events. [2024-10-31 22:17:37,225 INFO L125 PetriNetUnfolderBase]: For 5315/5454 co-relation queries the response was YES. [2024-10-31 22:17:37,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6472 conditions, 2106 events. 826/2106 cut-off events. For 5315/5454 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 13763 event pairs, 87 based on Foata normal form. 266/2363 useless extension candidates. Maximal degree in co-relation 6450. Up to 389 conditions per place. [2024-10-31 22:17:37,244 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 82 selfloop transitions, 15 changer transitions 0/111 dead transitions. [2024-10-31 22:17:37,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 111 transitions, 802 flow [2024-10-31 22:17:37,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:17:37,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:17:37,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-10-31 22:17:37,246 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7061224489795919 [2024-10-31 22:17:37,246 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 279 flow. Second operand 7 states and 173 transitions. [2024-10-31 22:17:37,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 111 transitions, 802 flow [2024-10-31 22:17:37,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 111 transitions, 773 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-10-31 22:17:37,258 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 383 flow [2024-10-31 22:17:37,259 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2024-10-31 22:17:37,259 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 30 predicate places. [2024-10-31 22:17:37,261 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 383 flow [2024-10-31 22:17:37,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:37,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:37,261 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:37,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-31 22:17:37,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-31 22:17:37,462 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-31 22:17:37,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:37,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1361864348, now seen corresponding path program 1 times [2024-10-31 22:17:37,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:37,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884536250] [2024-10-31 22:17:37,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:37,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:37,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:37,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:37,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884536250] [2024-10-31 22:17:37,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884536250] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:37,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41570814] [2024-10-31 22:17:37,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:37,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:37,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:37,625 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:37,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:17:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:37,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:17:37,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:37,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:37,829 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:17:37,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41570814] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:37,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:17:37,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-31 22:17:37,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344101303] [2024-10-31 22:17:37,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:37,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:17:37,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:37,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:17:37,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:17:37,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-31 22:17:37,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:37,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:37,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-31 22:17:37,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:38,382 INFO L124 PetriNetUnfolderBase]: 1274/2650 cut-off events. [2024-10-31 22:17:38,382 INFO L125 PetriNetUnfolderBase]: For 8186/8308 co-relation queries the response was YES. [2024-10-31 22:17:38,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9048 conditions, 2650 events. 1274/2650 cut-off events. For 8186/8308 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 16546 event pairs, 209 based on Foata normal form. 115/2630 useless extension candidates. Maximal degree in co-relation 9020. Up to 665 conditions per place. [2024-10-31 22:17:38,406 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 115 selfloop transitions, 7 changer transitions 0/132 dead transitions. [2024-10-31 22:17:38,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 132 transitions, 1316 flow [2024-10-31 22:17:38,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:17:38,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:17:38,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-10-31 22:17:38,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-10-31 22:17:38,408 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 383 flow. Second operand 6 states and 119 transitions. [2024-10-31 22:17:38,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 132 transitions, 1316 flow [2024-10-31 22:17:38,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 132 transitions, 1231 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-10-31 22:17:38,425 INFO L231 Difference]: Finished difference. Result has 69 places, 51 transitions, 366 flow [2024-10-31 22:17:38,426 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=366, PETRI_PLACES=69, PETRI_TRANSITIONS=51} [2024-10-31 22:17:38,426 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 32 predicate places. [2024-10-31 22:17:38,426 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 51 transitions, 366 flow [2024-10-31 22:17:38,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:38,427 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:38,427 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:38,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 22:17:38,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:38,628 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-31 22:17:38,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:38,628 INFO L85 PathProgramCache]: Analyzing trace with hash 3071850, now seen corresponding path program 1 times [2024-10-31 22:17:38,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:38,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85274363] [2024-10-31 22:17:38,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:38,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:38,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:38,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85274363] [2024-10-31 22:17:38,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85274363] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:38,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352979089] [2024-10-31 22:17:38,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:38,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:38,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:38,768 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:38,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:17:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:38,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:17:38,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:38,906 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:38,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:17:38,979 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:38,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352979089] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:17:38,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:17:38,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-31 22:17:38,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769262321] [2024-10-31 22:17:38,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:17:38,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:17:38,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:38,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:17:38,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:17:39,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-31 22:17:39,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 51 transitions, 366 flow. Second operand has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:39,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:39,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-31 22:17:39,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:39,906 INFO L124 PetriNetUnfolderBase]: 2041/4312 cut-off events. [2024-10-31 22:17:39,906 INFO L125 PetriNetUnfolderBase]: For 12670/12836 co-relation queries the response was YES. [2024-10-31 22:17:39,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14854 conditions, 4312 events. 2041/4312 cut-off events. For 12670/12836 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 27980 event pairs, 453 based on Foata normal form. 225/4499 useless extension candidates. Maximal degree in co-relation 14827. Up to 1473 conditions per place. [2024-10-31 22:17:39,955 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 202 selfloop transitions, 13 changer transitions 6/231 dead transitions. [2024-10-31 22:17:39,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 231 transitions, 2269 flow [2024-10-31 22:17:39,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:17:39,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:17:39,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-10-31 22:17:39,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-10-31 22:17:39,957 INFO L175 Difference]: Start difference. First operand has 69 places, 51 transitions, 366 flow. Second operand 10 states and 205 transitions. [2024-10-31 22:17:39,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 231 transitions, 2269 flow [2024-10-31 22:17:39,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 231 transitions, 2239 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-31 22:17:39,983 INFO L231 Difference]: Finished difference. Result has 77 places, 59 transitions, 429 flow [2024-10-31 22:17:39,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=429, PETRI_PLACES=77, PETRI_TRANSITIONS=59} [2024-10-31 22:17:39,985 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 40 predicate places. [2024-10-31 22:17:39,985 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 59 transitions, 429 flow [2024-10-31 22:17:39,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:39,985 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:39,986 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2024-10-31 22:17:40,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-31 22:17:40,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:40,186 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-31 22:17:40,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:40,187 INFO L85 PathProgramCache]: Analyzing trace with hash 879384207, now seen corresponding path program 1 times [2024-10-31 22:17:40,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:40,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64287962] [2024-10-31 22:17:40,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:40,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:40,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:40,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64287962] [2024-10-31 22:17:40,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64287962] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:40,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861952206] [2024-10-31 22:17:40,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:40,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:40,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:40,306 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:40,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 22:17:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:40,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:17:40,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:40,426 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:40,426 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:17:40,544 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:40,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861952206] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:17:40,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:17:40,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-31 22:17:40,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087548351] [2024-10-31 22:17:40,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:17:40,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:17:40,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:40,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:17:40,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:17:40,547 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-10-31 22:17:40,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 59 transitions, 429 flow. Second operand has 13 states, 13 states have (on average 17.153846153846153) internal successors, (223), 13 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:40,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:40,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-10-31 22:17:40,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:42,168 INFO L124 PetriNetUnfolderBase]: 3284/7520 cut-off events. [2024-10-31 22:17:42,168 INFO L125 PetriNetUnfolderBase]: For 28180/28582 co-relation queries the response was YES. [2024-10-31 22:17:42,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26841 conditions, 7520 events. 3284/7520 cut-off events. For 28180/28582 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 57584 event pairs, 275 based on Foata normal form. 220/7702 useless extension candidates. Maximal degree in co-relation 26812. Up to 1303 conditions per place. [2024-10-31 22:17:42,240 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 210 selfloop transitions, 45 changer transitions 4/275 dead transitions. [2024-10-31 22:17:42,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 275 transitions, 2292 flow [2024-10-31 22:17:42,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:17:42,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-31 22:17:42,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 314 transitions. [2024-10-31 22:17:42,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7476190476190476 [2024-10-31 22:17:42,242 INFO L175 Difference]: Start difference. First operand has 77 places, 59 transitions, 429 flow. Second operand 12 states and 314 transitions. [2024-10-31 22:17:42,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 275 transitions, 2292 flow [2024-10-31 22:17:42,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 275 transitions, 2191 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-10-31 22:17:42,300 INFO L231 Difference]: Finished difference. Result has 95 places, 91 transitions, 922 flow [2024-10-31 22:17:42,301 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=922, PETRI_PLACES=95, PETRI_TRANSITIONS=91} [2024-10-31 22:17:42,301 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 58 predicate places. [2024-10-31 22:17:42,301 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 91 transitions, 922 flow [2024-10-31 22:17:42,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.153846153846153) internal successors, (223), 13 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:42,302 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:42,302 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-10-31 22:17:42,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-31 22:17:42,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-31 22:17:42,503 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-31 22:17:42,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:42,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1565291932, now seen corresponding path program 2 times [2024-10-31 22:17:42,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:42,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423118825] [2024-10-31 22:17:42,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:42,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:42,663 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:42,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:42,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423118825] [2024-10-31 22:17:42,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423118825] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:42,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899855173] [2024-10-31 22:17:42,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:17:42,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:42,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:42,666 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:42,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-31 22:17:42,719 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:17:42,719 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:17:42,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:17:42,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:42,803 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-31 22:17:42,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:17:42,876 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-31 22:17:42,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899855173] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:17:42,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:17:42,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-10-31 22:17:42,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617659992] [2024-10-31 22:17:42,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:17:42,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 22:17:42,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:42,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 22:17:42,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:17:42,934 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-10-31 22:17:42,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 91 transitions, 922 flow. Second operand has 15 states, 15 states have (on average 13.266666666666667) internal successors, (199), 15 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:42,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:42,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-10-31 22:17:42,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:45,437 INFO L124 PetriNetUnfolderBase]: 5579/10425 cut-off events. [2024-10-31 22:17:45,437 INFO L125 PetriNetUnfolderBase]: For 49804/50191 co-relation queries the response was YES. [2024-10-31 22:17:45,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39875 conditions, 10425 events. 5579/10425 cut-off events. For 49804/50191 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 72281 event pairs, 645 based on Foata normal form. 492/10905 useless extension candidates. Maximal degree in co-relation 39835. Up to 2949 conditions per place. [2024-10-31 22:17:45,540 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 362 selfloop transitions, 16 changer transitions 1/388 dead transitions. [2024-10-31 22:17:45,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 388 transitions, 4450 flow [2024-10-31 22:17:45,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-31 22:17:45,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-31 22:17:45,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 291 transitions. [2024-10-31 22:17:45,542 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5542857142857143 [2024-10-31 22:17:45,542 INFO L175 Difference]: Start difference. First operand has 95 places, 91 transitions, 922 flow. Second operand 15 states and 291 transitions. [2024-10-31 22:17:45,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 388 transitions, 4450 flow [2024-10-31 22:17:45,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 388 transitions, 4023 flow, removed 174 selfloop flow, removed 6 redundant places. [2024-10-31 22:17:45,633 INFO L231 Difference]: Finished difference. Result has 105 places, 94 transitions, 872 flow [2024-10-31 22:17:45,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=872, PETRI_PLACES=105, PETRI_TRANSITIONS=94} [2024-10-31 22:17:45,635 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 68 predicate places. [2024-10-31 22:17:45,636 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 94 transitions, 872 flow [2024-10-31 22:17:45,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.266666666666667) internal successors, (199), 15 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:45,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:45,636 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:45,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-31 22:17:45,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-31 22:17:45,841 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-31 22:17:45,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:45,841 INFO L85 PathProgramCache]: Analyzing trace with hash 2134235657, now seen corresponding path program 2 times [2024-10-31 22:17:45,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:45,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992890714] [2024-10-31 22:17:45,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:45,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:17:46,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:46,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992890714] [2024-10-31 22:17:46,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992890714] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:46,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316492265] [2024-10-31 22:17:46,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:17:46,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:46,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:46,224 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:46,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-31 22:17:46,288 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:17:46,288 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:17:46,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:17:46,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:46,446 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-31 22:17:46,447 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:17:46,588 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-31 22:17:46,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316492265] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:17:46,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:17:46,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-10-31 22:17:46,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006331684] [2024-10-31 22:17:46,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:17:46,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 22:17:46,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:46,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 22:17:46,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:17:46,722 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-10-31 22:17:46,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 94 transitions, 872 flow. Second operand has 15 states, 15 states have (on average 14.4) internal successors, (216), 15 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:46,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:46,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-10-31 22:17:46,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:49,766 INFO L124 PetriNetUnfolderBase]: 7053/13328 cut-off events. [2024-10-31 22:17:49,766 INFO L125 PetriNetUnfolderBase]: For 66130/67642 co-relation queries the response was YES. [2024-10-31 22:17:49,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51081 conditions, 13328 events. 7053/13328 cut-off events. For 66130/67642 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 96436 event pairs, 460 based on Foata normal form. 1007/14303 useless extension candidates. Maximal degree in co-relation 51042. Up to 2551 conditions per place. [2024-10-31 22:17:49,883 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 536 selfloop transitions, 21 changer transitions 39/606 dead transitions. [2024-10-31 22:17:49,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 606 transitions, 7605 flow [2024-10-31 22:17:49,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-31 22:17:49,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-31 22:17:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 284 transitions. [2024-10-31 22:17:49,885 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.540952380952381 [2024-10-31 22:17:49,885 INFO L175 Difference]: Start difference. First operand has 105 places, 94 transitions, 872 flow. Second operand 15 states and 284 transitions. [2024-10-31 22:17:49,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 606 transitions, 7605 flow [2024-10-31 22:17:50,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 606 transitions, 7381 flow, removed 52 selfloop flow, removed 14 redundant places. [2024-10-31 22:17:50,041 INFO L231 Difference]: Finished difference. Result has 105 places, 95 transitions, 874 flow [2024-10-31 22:17:50,041 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=874, PETRI_PLACES=105, PETRI_TRANSITIONS=95} [2024-10-31 22:17:50,042 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 68 predicate places. [2024-10-31 22:17:50,042 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 95 transitions, 874 flow [2024-10-31 22:17:50,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.4) internal successors, (216), 15 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:50,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:50,043 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2024-10-31 22:17:50,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-31 22:17:50,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:50,244 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-31 22:17:50,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:50,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1993551215, now seen corresponding path program 2 times [2024-10-31 22:17:50,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:50,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635170651] [2024-10-31 22:17:50,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:50,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:50,528 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:50,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:50,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635170651] [2024-10-31 22:17:50,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635170651] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:50,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632438541] [2024-10-31 22:17:50,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:17:50,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:50,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:50,531 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:50,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-31 22:17:50,602 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:17:50,602 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:17:50,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-31 22:17:50,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:50,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:17:51,041 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:51,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632438541] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:17:51,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:17:51,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-10-31 22:17:51,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28312299] [2024-10-31 22:17:51,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:17:51,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-31 22:17:51,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:51,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-31 22:17:51,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-31 22:17:51,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-10-31 22:17:51,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 95 transitions, 874 flow. Second operand has 25 states, 25 states have (on average 17.08) internal successors, (427), 25 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:51,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:51,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-10-31 22:17:51,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:55,073 INFO L124 PetriNetUnfolderBase]: 8201/19222 cut-off events. [2024-10-31 22:17:55,073 INFO L125 PetriNetUnfolderBase]: For 127422/129080 co-relation queries the response was YES. [2024-10-31 22:17:55,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73413 conditions, 19222 events. 8201/19222 cut-off events. For 127422/129080 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 160653 event pairs, 417 based on Foata normal form. 598/19805 useless extension candidates. Maximal degree in co-relation 73376. Up to 3487 conditions per place. [2024-10-31 22:17:55,248 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 443 selfloop transitions, 205 changer transitions 0/666 dead transitions. [2024-10-31 22:17:55,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 666 transitions, 6594 flow [2024-10-31 22:17:55,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-31 22:17:55,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-31 22:17:55,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 592 transitions. [2024-10-31 22:17:55,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7047619047619048 [2024-10-31 22:17:55,252 INFO L175 Difference]: Start difference. First operand has 105 places, 95 transitions, 874 flow. Second operand 24 states and 592 transitions. [2024-10-31 22:17:55,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 666 transitions, 6594 flow [2024-10-31 22:17:55,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 666 transitions, 5747 flow, removed 118 selfloop flow, removed 15 redundant places. [2024-10-31 22:17:55,403 INFO L231 Difference]: Finished difference. Result has 132 places, 255 transitions, 3310 flow [2024-10-31 22:17:55,404 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3310, PETRI_PLACES=132, PETRI_TRANSITIONS=255} [2024-10-31 22:17:55,404 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 95 predicate places. [2024-10-31 22:17:55,404 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 255 transitions, 3310 flow [2024-10-31 22:17:55,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 17.08) internal successors, (427), 25 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:55,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:55,405 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2024-10-31 22:17:55,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-31 22:17:55,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:55,606 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-31 22:17:55,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:55,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1741751087, now seen corresponding path program 3 times [2024-10-31 22:17:55,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:55,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589619907] [2024-10-31 22:17:55,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:55,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:56,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:56,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:56,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589619907] [2024-10-31 22:17:56,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589619907] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:56,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481893421] [2024-10-31 22:17:56,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:17:56,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:56,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:56,611 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:56,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8383c7f9-fab5-4b68-9d5d-7ef9e63f18c5/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-31 22:17:56,747 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-10-31 22:17:56,747 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:17:56,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-31 22:17:56,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:56,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:56,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:17:57,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:57,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481893421] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:17:57,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:17:57,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2024-10-31 22:17:57,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955550850] [2024-10-31 22:17:57,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:17:58,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-31 22:17:58,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:58,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-31 22:17:58,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-10-31 22:17:58,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-10-31 22:17:58,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 255 transitions, 3310 flow. Second operand has 49 states, 49 states have (on average 17.040816326530614) internal successors, (835), 49 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:58,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:58,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-10-31 22:17:58,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand