./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 02:01:20,860 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 02:01:20,931 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 02:01:20,934 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 02:01:20,937 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 02:01:20,958 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 02:01:20,960 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 02:01:20,960 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 02:01:20,961 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 02:01:20,962 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 02:01:20,962 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 02:01:20,962 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 02:01:20,962 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 02:01:20,964 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 02:01:20,964 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 02:01:20,964 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 02:01:20,965 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 02:01:20,965 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 02:01:20,965 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 02:01:20,965 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 02:01:20,965 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 02:01:20,968 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 02:01:20,968 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 02:01:20,968 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 02:01:20,969 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 02:01:20,969 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 02:01:20,969 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 02:01:20,969 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 02:01:20,969 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 02:01:20,969 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 02:01:20,970 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 02:01:20,970 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 02:01:20,970 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 02:01:20,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 02:01:20,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 02:01:20,970 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 02:01:20,970 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 02:01:20,970 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 02:01:20,971 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 02:01:20,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 02:01:20,971 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 02:01:20,971 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 02:01:20,971 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 02:01:20,971 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 02:01:20,971 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 [2024-11-23 02:01:21,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 02:01:21,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 02:01:21,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 02:01:21,192 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 02:01:21,192 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 02:01:21,193 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2024-11-23 02:01:22,421 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 02:01:22,580 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 02:01:22,580 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2024-11-23 02:01:22,586 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa6effbe7/14ad0cc190674e32b80e612e6478a5e4/FLAG69e1cfedc [2024-11-23 02:01:22,597 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa6effbe7/14ad0cc190674e32b80e612e6478a5e4 [2024-11-23 02:01:22,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 02:01:22,600 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 02:01:22,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 02:01:22,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 02:01:22,605 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 02:01:22,606 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:01:22" (1/1) ... [2024-11-23 02:01:22,606 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27bf2f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:22, skipping insertion in model container [2024-11-23 02:01:22,607 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:01:22" (1/1) ... [2024-11-23 02:01:22,622 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 02:01:22,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:01:22,830 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 02:01:22,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:01:22,861 INFO L204 MainTranslator]: Completed translation [2024-11-23 02:01:22,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:22 WrapperNode [2024-11-23 02:01:22,862 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 02:01:22,863 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 02:01:22,863 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 02:01:22,864 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 02:01:22,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:22" (1/1) ... [2024-11-23 02:01:22,875 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:22" (1/1) ... [2024-11-23 02:01:22,897 INFO L138 Inliner]: procedures = 25, calls = 43, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 276 [2024-11-23 02:01:22,897 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 02:01:22,897 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 02:01:22,897 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 02:01:22,898 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 02:01:22,907 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:22" (1/1) ... [2024-11-23 02:01:22,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:22" (1/1) ... [2024-11-23 02:01:22,910 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:22" (1/1) ... [2024-11-23 02:01:22,933 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-23 02:01:22,933 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:22" (1/1) ... [2024-11-23 02:01:22,933 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:22" (1/1) ... [2024-11-23 02:01:22,939 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:22" (1/1) ... [2024-11-23 02:01:22,942 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:22" (1/1) ... [2024-11-23 02:01:22,944 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:22" (1/1) ... [2024-11-23 02:01:22,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:22" (1/1) ... [2024-11-23 02:01:22,947 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 02:01:22,948 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 02:01:22,948 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 02:01:22,948 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 02:01:22,949 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:22" (1/1) ... [2024-11-23 02:01:22,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 02:01:22,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:22,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 02:01:22,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 02:01:23,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 02:01:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 02:01:23,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 02:01:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 02:01:23,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 02:01:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-23 02:01:23,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-23 02:01:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 02:01:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 02:01:23,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 02:01:23,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 02:01:23,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-23 02:01:23,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-23 02:01:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 02:01:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 02:01:23,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 02:01:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 02:01:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 02:01:23,019 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 02:01:23,112 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 02:01:23,113 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 02:01:23,516 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 02:01:23,516 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 02:01:23,839 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 02:01:23,839 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-23 02:01:23,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:01:23 BoogieIcfgContainer [2024-11-23 02:01:23,840 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 02:01:23,841 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 02:01:23,842 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 02:01:23,844 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 02:01:23,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:01:22" (1/3) ... [2024-11-23 02:01:23,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cb6fc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:01:23, skipping insertion in model container [2024-11-23 02:01:23,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:22" (2/3) ... [2024-11-23 02:01:23,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cb6fc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:01:23, skipping insertion in model container [2024-11-23 02:01:23,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:01:23" (3/3) ... [2024-11-23 02:01:23,847 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2024-11-23 02:01:23,860 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 02:01:23,861 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-11-23 02:01:23,861 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 02:01:23,931 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-23 02:01:23,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 105 transitions, 231 flow [2024-11-23 02:01:23,995 INFO L124 PetriNetUnfolderBase]: 11/102 cut-off events. [2024-11-23 02:01:23,996 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-23 02:01:23,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 11/102 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 250 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-11-23 02:01:24,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 105 transitions, 231 flow [2024-11-23 02:01:24,003 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 101 transitions, 220 flow [2024-11-23 02:01:24,011 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 02:01:24,016 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;@37c0db10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 02:01:24,017 INFO L334 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2024-11-23 02:01:24,020 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 02:01:24,021 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-23 02:01:24,021 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 02:01:24,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:24,022 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 02:01:24,022 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:24,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:24,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1041504, now seen corresponding path program 1 times [2024-11-23 02:01:24,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:24,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752003746] [2024-11-23 02:01:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:24,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:24,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:24,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:24,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752003746] [2024-11-23 02:01:24,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752003746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:01:24,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:01:24,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:01:24,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311468706] [2024-11-23 02:01:24,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:01:24,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:01:24,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:24,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:01:24,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:01:24,323 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-23 02:01:24,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 101 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 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) [2024-11-23 02:01:24,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:24,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-23 02:01:24,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:24,761 INFO L124 PetriNetUnfolderBase]: 1153/2343 cut-off events. [2024-11-23 02:01:24,761 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-11-23 02:01:24,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4036 conditions, 2343 events. 1153/2343 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16172 event pairs, 826 based on Foata normal form. 3/1752 useless extension candidates. Maximal degree in co-relation 3589. Up to 1545 conditions per place. [2024-11-23 02:01:24,779 INFO L140 encePairwiseOnDemand]: 87/105 looper letters, 52 selfloop transitions, 10 changer transitions 0/108 dead transitions. [2024-11-23 02:01:24,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 108 transitions, 358 flow [2024-11-23 02:01:24,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:01:24,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:01:24,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2024-11-23 02:01:24,792 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-23 02:01:24,794 INFO L175 Difference]: Start difference. First operand has 100 places, 101 transitions, 220 flow. Second operand 4 states and 266 transitions. [2024-11-23 02:01:24,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 108 transitions, 358 flow [2024-11-23 02:01:24,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 108 transitions, 346 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-23 02:01:24,805 INFO L231 Difference]: Finished difference. Result has 98 places, 108 transitions, 292 flow [2024-11-23 02:01:24,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=98, PETRI_TRANSITIONS=108} [2024-11-23 02:01:24,810 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -2 predicate places. [2024-11-23 02:01:24,810 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 108 transitions, 292 flow [2024-11-23 02:01:24,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 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) [2024-11-23 02:01:24,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:24,811 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-23 02:01:24,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 02:01:24,811 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:24,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:24,811 INFO L85 PathProgramCache]: Analyzing trace with hash 963766068, now seen corresponding path program 1 times [2024-11-23 02:01:24,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:24,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674030155] [2024-11-23 02:01:24,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:24,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:24,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:24,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:24,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674030155] [2024-11-23 02:01:24,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674030155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:24,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181815315] [2024-11-23 02:01:24,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:24,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:24,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:24,956 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:24,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 02:01:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:25,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:01:25,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:25,078 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 02:01:25,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181815315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:01:25,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 02:01:25,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 02:01:25,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718185699] [2024-11-23 02:01:25,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:01:25,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 02:01:25,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:25,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:01:25,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 02:01:25,105 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-23 02:01:25,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 108 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:25,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:25,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-23 02:01:25,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:25,382 INFO L124 PetriNetUnfolderBase]: 1153/2340 cut-off events. [2024-11-23 02:01:25,382 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-23 02:01:25,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3971 conditions, 2340 events. 1153/2340 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16144 event pairs, 826 based on Foata normal form. 3/1754 useless extension candidates. Maximal degree in co-relation 3898. Up to 1530 conditions per place. [2024-11-23 02:01:25,394 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 42 selfloop transitions, 17 changer transitions 0/105 dead transitions. [2024-11-23 02:01:25,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 105 transitions, 398 flow [2024-11-23 02:01:25,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 02:01:25,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 02:01:25,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 356 transitions. [2024-11-23 02:01:25,397 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5650793650793651 [2024-11-23 02:01:25,397 INFO L175 Difference]: Start difference. First operand has 98 places, 108 transitions, 292 flow. Second operand 6 states and 356 transitions. [2024-11-23 02:01:25,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 105 transitions, 398 flow [2024-11-23 02:01:25,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 105 transitions, 398 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 02:01:25,402 INFO L231 Difference]: Finished difference. Result has 100 places, 105 transitions, 314 flow [2024-11-23 02:01:25,402 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=314, PETRI_PLACES=100, PETRI_TRANSITIONS=105} [2024-11-23 02:01:25,402 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 0 predicate places. [2024-11-23 02:01:25,403 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 105 transitions, 314 flow [2024-11-23 02:01:25,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:25,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:25,403 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 02:01:25,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 02:01:25,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:25,605 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:25,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:25,605 INFO L85 PathProgramCache]: Analyzing trace with hash 964607810, now seen corresponding path program 1 times [2024-11-23 02:01:25,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:25,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987646042] [2024-11-23 02:01:25,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:25,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:25,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:25,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:25,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987646042] [2024-11-23 02:01:25,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987646042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:01:25,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:01:25,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 02:01:25,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972570869] [2024-11-23 02:01:25,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:01:25,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:01:25,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:25,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:01:25,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:01:25,730 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 105 [2024-11-23 02:01:25,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 105 transitions, 314 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:25,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:25,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 105 [2024-11-23 02:01:25,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:25,960 INFO L124 PetriNetUnfolderBase]: 1154/2357 cut-off events. [2024-11-23 02:01:25,960 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-23 02:01:25,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4020 conditions, 2357 events. 1154/2357 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16166 event pairs, 826 based on Foata normal form. 4/1771 useless extension candidates. Maximal degree in co-relation 3934. Up to 1545 conditions per place. [2024-11-23 02:01:25,971 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 63 selfloop transitions, 10 changer transitions 0/110 dead transitions. [2024-11-23 02:01:25,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 110 transitions, 470 flow [2024-11-23 02:01:25,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:01:25,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:01:25,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 242 transitions. [2024-11-23 02:01:25,972 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5761904761904761 [2024-11-23 02:01:25,972 INFO L175 Difference]: Start difference. First operand has 100 places, 105 transitions, 314 flow. Second operand 4 states and 242 transitions. [2024-11-23 02:01:25,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 110 transitions, 470 flow [2024-11-23 02:01:25,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 110 transitions, 432 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-23 02:01:25,975 INFO L231 Difference]: Finished difference. Result has 99 places, 108 transitions, 340 flow [2024-11-23 02:01:25,975 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=99, PETRI_TRANSITIONS=108} [2024-11-23 02:01:25,976 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -1 predicate places. [2024-11-23 02:01:25,976 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 108 transitions, 340 flow [2024-11-23 02:01:25,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:25,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:25,976 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:25,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 02:01:25,976 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:25,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:25,977 INFO L85 PathProgramCache]: Analyzing trace with hash -161927917, now seen corresponding path program 1 times [2024-11-23 02:01:25,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:25,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725471849] [2024-11-23 02:01:25,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:25,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:26,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:26,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:26,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725471849] [2024-11-23 02:01:26,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725471849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:01:26,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:01:26,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:01:26,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292696830] [2024-11-23 02:01:26,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:01:26,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 02:01:26,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:26,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 02:01:26,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 02:01:26,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 105 [2024-11-23 02:01:26,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 108 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:26,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:26,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 105 [2024-11-23 02:01:26,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:26,268 INFO L124 PetriNetUnfolderBase]: 1153/2356 cut-off events. [2024-11-23 02:01:26,268 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-11-23 02:01:26,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4014 conditions, 2356 events. 1153/2356 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16153 event pairs, 826 based on Foata normal form. 1/1772 useless extension candidates. Maximal degree in co-relation 3946. Up to 1549 conditions per place. [2024-11-23 02:01:26,279 INFO L140 encePairwiseOnDemand]: 102/105 looper letters, 56 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2024-11-23 02:01:26,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 107 transitions, 452 flow [2024-11-23 02:01:26,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 02:01:26,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 02:01:26,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2024-11-23 02:01:26,281 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6825396825396826 [2024-11-23 02:01:26,281 INFO L175 Difference]: Start difference. First operand has 99 places, 108 transitions, 340 flow. Second operand 3 states and 215 transitions. [2024-11-23 02:01:26,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 107 transitions, 452 flow [2024-11-23 02:01:26,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 107 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 02:01:26,286 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 340 flow [2024-11-23 02:01:26,286 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=101, PETRI_TRANSITIONS=107} [2024-11-23 02:01:26,286 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 1 predicate places. [2024-11-23 02:01:26,287 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 340 flow [2024-11-23 02:01:26,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:26,287 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:26,287 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-23 02:01:26,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 02:01:26,287 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:26,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:26,288 INFO L85 PathProgramCache]: Analyzing trace with hash -188021864, now seen corresponding path program 1 times [2024-11-23 02:01:26,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:26,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790394212] [2024-11-23 02:01:26,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:26,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:26,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:26,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:26,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790394212] [2024-11-23 02:01:26,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790394212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:26,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617407172] [2024-11-23 02:01:26,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:26,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:26,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:26,335 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:26,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 02:01:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:26,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:01:26,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:26,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:01:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:26,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617407172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:01:26,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:01:26,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-23 02:01:26,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039721157] [2024-11-23 02:01:26,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:01:26,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 02:01:26,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:26,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 02:01:26,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 02:01:26,479 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-23 02:01:26,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 107 transitions, 340 flow. Second operand has 12 states, 12 states have (on average 50.083333333333336) internal successors, (601), 12 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:26,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:26,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-23 02:01:26,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:26,756 INFO L124 PetriNetUnfolderBase]: 1162/2392 cut-off events. [2024-11-23 02:01:26,757 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-11-23 02:01:26,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4128 conditions, 2392 events. 1162/2392 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16368 event pairs, 826 based on Foata normal form. 9/1810 useless extension candidates. Maximal degree in co-relation 4107. Up to 1550 conditions per place. [2024-11-23 02:01:26,768 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 51 selfloop transitions, 37 changer transitions 0/134 dead transitions. [2024-11-23 02:01:26,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 134 transitions, 657 flow [2024-11-23 02:01:26,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 02:01:26,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 02:01:26,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 584 transitions. [2024-11-23 02:01:26,770 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5561904761904762 [2024-11-23 02:01:26,770 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 340 flow. Second operand 10 states and 584 transitions. [2024-11-23 02:01:26,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 134 transitions, 657 flow [2024-11-23 02:01:26,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 134 transitions, 655 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:01:26,774 INFO L231 Difference]: Finished difference. Result has 112 places, 134 transitions, 603 flow [2024-11-23 02:01:26,774 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=603, PETRI_PLACES=112, PETRI_TRANSITIONS=134} [2024-11-23 02:01:26,775 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 12 predicate places. [2024-11-23 02:01:26,775 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 134 transitions, 603 flow [2024-11-23 02:01:26,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.083333333333336) internal successors, (601), 12 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:26,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:26,776 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:26,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 02:01:26,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:26,976 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:26,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:26,977 INFO L85 PathProgramCache]: Analyzing trace with hash -694835737, now seen corresponding path program 1 times [2024-11-23 02:01:26,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:26,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453824450] [2024-11-23 02:01:26,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:26,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:27,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:01:27,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:27,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453824450] [2024-11-23 02:01:27,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453824450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:01:27,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:01:27,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 02:01:27,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734063960] [2024-11-23 02:01:27,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:01:27,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:01:27,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:27,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:01:27,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:01:27,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 105 [2024-11-23 02:01:27,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 134 transitions, 603 flow. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:27,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:27,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 105 [2024-11-23 02:01:27,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:27,281 INFO L124 PetriNetUnfolderBase]: 1160/2390 cut-off events. [2024-11-23 02:01:27,281 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-11-23 02:01:27,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4181 conditions, 2390 events. 1160/2390 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16250 event pairs, 826 based on Foata normal form. 2/1807 useless extension candidates. Maximal degree in co-relation 4078. Up to 1563 conditions per place. [2024-11-23 02:01:27,306 INFO L140 encePairwiseOnDemand]: 98/105 looper letters, 71 selfloop transitions, 12 changer transitions 0/132 dead transitions. [2024-11-23 02:01:27,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 132 transitions, 755 flow [2024-11-23 02:01:27,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:01:27,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:01:27,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 275 transitions. [2024-11-23 02:01:27,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-11-23 02:01:27,308 INFO L175 Difference]: Start difference. First operand has 112 places, 134 transitions, 603 flow. Second operand 4 states and 275 transitions. [2024-11-23 02:01:27,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 132 transitions, 755 flow [2024-11-23 02:01:27,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 132 transitions, 707 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-23 02:01:27,311 INFO L231 Difference]: Finished difference. Result has 112 places, 132 transitions, 565 flow [2024-11-23 02:01:27,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=565, PETRI_PLACES=112, PETRI_TRANSITIONS=132} [2024-11-23 02:01:27,313 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 12 predicate places. [2024-11-23 02:01:27,314 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 132 transitions, 565 flow [2024-11-23 02:01:27,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:27,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:27,314 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-23 02:01:27,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 02:01:27,314 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:27,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:27,314 INFO L85 PathProgramCache]: Analyzing trace with hash -270275348, now seen corresponding path program 2 times [2024-11-23 02:01:27,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:27,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902720962] [2024-11-23 02:01:27,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:01:27,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:27,325 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:01:27,326 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:01:27,354 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 02:01:27,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:27,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902720962] [2024-11-23 02:01:27,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902720962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:27,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009477775] [2024-11-23 02:01:27,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:01:27,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:27,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:27,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:27,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 02:01:27,414 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:01:27,414 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:01:27,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 02:01:27,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 02:01:27,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:01:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 02:01:27,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009477775] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:01:27,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:01:27,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-23 02:01:27,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780577278] [2024-11-23 02:01:27,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:01:27,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:01:27,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:27,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:01:27,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:01:27,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-23 02:01:27,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 132 transitions, 565 flow. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:27,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:27,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-23 02:01:27,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:27,719 INFO L124 PetriNetUnfolderBase]: 1160/2389 cut-off events. [2024-11-23 02:01:27,719 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-11-23 02:01:27,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4161 conditions, 2389 events. 1160/2389 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16261 event pairs, 826 based on Foata normal form. 1/1807 useless extension candidates. Maximal degree in co-relation 4065. Up to 1567 conditions per place. [2024-11-23 02:01:27,734 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 70 selfloop transitions, 15 changer transitions 0/131 dead transitions. [2024-11-23 02:01:27,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 131 transitions, 725 flow [2024-11-23 02:01:27,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:01:27,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:01:27,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 246 transitions. [2024-11-23 02:01:27,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-11-23 02:01:27,736 INFO L175 Difference]: Start difference. First operand has 112 places, 132 transitions, 565 flow. Second operand 4 states and 246 transitions. [2024-11-23 02:01:27,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 131 transitions, 725 flow [2024-11-23 02:01:27,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 131 transitions, 701 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 02:01:27,739 INFO L231 Difference]: Finished difference. Result has 111 places, 131 transitions, 561 flow [2024-11-23 02:01:27,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=561, PETRI_PLACES=111, PETRI_TRANSITIONS=131} [2024-11-23 02:01:27,740 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 11 predicate places. [2024-11-23 02:01:27,740 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 131 transitions, 561 flow [2024-11-23 02:01:27,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:27,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:27,740 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:27,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 02:01:27,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:27,941 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:27,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:27,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1856241909, now seen corresponding path program 1 times [2024-11-23 02:01:27,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:27,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133545161] [2024-11-23 02:01:27,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:27,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:28,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:01:28,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:28,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133545161] [2024-11-23 02:01:28,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133545161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:28,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341758623] [2024-11-23 02:01:28,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:28,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:28,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:28,183 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:28,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 02:01:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:28,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-23 02:01:28,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:28,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 02:01:28,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 02:01:28,339 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-23 02:01:28,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-23 02:01:28,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-23 02:01:28,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-23 02:01:28,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:01:28,376 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:01:28,408 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_100 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_100) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2024-11-23 02:01:28,470 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:01:28,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-23 02:01:28,481 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:01:28,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2024-11-23 02:01:28,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-23 02:01:28,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2024-11-23 02:01:28,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341758623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:01:28,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:01:28,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-23 02:01:28,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244962727] [2024-11-23 02:01:28,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:01:28,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 02:01:28,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:28,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 02:01:28,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=104, Unknown=1, NotChecked=20, Total=156 [2024-11-23 02:01:28,548 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 105 [2024-11-23 02:01:28,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 131 transitions, 561 flow. Second operand has 13 states, 13 states have (on average 38.84615384615385) internal successors, (505), 13 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:28,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:28,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 105 [2024-11-23 02:01:28,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:29,052 INFO L124 PetriNetUnfolderBase]: 1158/2392 cut-off events. [2024-11-23 02:01:29,052 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2024-11-23 02:01:29,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4194 conditions, 2392 events. 1158/2392 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16274 event pairs, 826 based on Foata normal form. 0/1805 useless extension candidates. Maximal degree in co-relation 4103. Up to 1529 conditions per place. [2024-11-23 02:01:29,063 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 85 selfloop transitions, 24 changer transitions 0/139 dead transitions. [2024-11-23 02:01:29,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 139 transitions, 795 flow [2024-11-23 02:01:29,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 02:01:29,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 02:01:29,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 487 transitions. [2024-11-23 02:01:29,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42164502164502166 [2024-11-23 02:01:29,065 INFO L175 Difference]: Start difference. First operand has 111 places, 131 transitions, 561 flow. Second operand 11 states and 487 transitions. [2024-11-23 02:01:29,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 139 transitions, 795 flow [2024-11-23 02:01:29,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 139 transitions, 765 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 02:01:29,068 INFO L231 Difference]: Finished difference. Result has 117 places, 130 transitions, 577 flow [2024-11-23 02:01:29,068 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=577, PETRI_PLACES=117, PETRI_TRANSITIONS=130} [2024-11-23 02:01:29,069 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 17 predicate places. [2024-11-23 02:01:29,069 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 130 transitions, 577 flow [2024-11-23 02:01:29,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 38.84615384615385) internal successors, (505), 13 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:29,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:29,069 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:29,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 02:01:29,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:29,270 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:29,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:29,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1708918148, now seen corresponding path program 1 times [2024-11-23 02:01:29,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:29,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676920318] [2024-11-23 02:01:29,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:29,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:29,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:01:29,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:29,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676920318] [2024-11-23 02:01:29,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676920318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:29,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549252783] [2024-11-23 02:01:29,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:29,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:29,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:29,505 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:29,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 02:01:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:29,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-23 02:01:29,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:29,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 02:01:29,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 02:01:29,618 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-23 02:01:29,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-23 02:01:29,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-23 02:01:29,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-23 02:01:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:01:29,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:01:29,711 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:01:29,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-23 02:01:29,717 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:01:29,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-11-23 02:01:29,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-23 02:01:29,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:01:29,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549252783] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:01:29,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:01:29,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-23 02:01:29,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585211920] [2024-11-23 02:01:29,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:01:29,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 02:01:29,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:29,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 02:01:29,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=144, Unknown=2, NotChecked=0, Total=182 [2024-11-23 02:01:29,855 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 105 [2024-11-23 02:01:29,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 130 transitions, 577 flow. Second operand has 14 states, 14 states have (on average 38.857142857142854) internal successors, (544), 14 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:29,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:29,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 105 [2024-11-23 02:01:29,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:30,296 INFO L124 PetriNetUnfolderBase]: 1158/2391 cut-off events. [2024-11-23 02:01:30,297 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2024-11-23 02:01:30,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4200 conditions, 2391 events. 1158/2391 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16279 event pairs, 826 based on Foata normal form. 1/1808 useless extension candidates. Maximal degree in co-relation 4105. Up to 1533 conditions per place. [2024-11-23 02:01:30,306 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 78 selfloop transitions, 25 changer transitions 0/133 dead transitions. [2024-11-23 02:01:30,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 133 transitions, 787 flow [2024-11-23 02:01:30,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 02:01:30,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 02:01:30,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 479 transitions. [2024-11-23 02:01:30,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4147186147186147 [2024-11-23 02:01:30,308 INFO L175 Difference]: Start difference. First operand has 117 places, 130 transitions, 577 flow. Second operand 11 states and 479 transitions. [2024-11-23 02:01:30,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 133 transitions, 787 flow [2024-11-23 02:01:30,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 133 transitions, 760 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 02:01:30,311 INFO L231 Difference]: Finished difference. Result has 122 places, 129 transitions, 596 flow [2024-11-23 02:01:30,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=596, PETRI_PLACES=122, PETRI_TRANSITIONS=129} [2024-11-23 02:01:30,312 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 22 predicate places. [2024-11-23 02:01:30,312 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 129 transitions, 596 flow [2024-11-23 02:01:30,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 38.857142857142854) internal successors, (544), 14 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:30,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:30,313 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:30,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 02:01:30,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:30,517 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:30,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:30,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1436854551, now seen corresponding path program 1 times [2024-11-23 02:01:30,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:30,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473725341] [2024-11-23 02:01:30,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:30,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:30,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:30,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:30,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473725341] [2024-11-23 02:01:30,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473725341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:30,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103057259] [2024-11-23 02:01:30,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:30,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:30,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:30,828 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:30,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 02:01:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:30,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-23 02:01:30,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:30,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 02:01:30,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 02:01:30,962 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-23 02:01:30,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-23 02:01:30,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-23 02:01:31,036 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-23 02:01:31,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2024-11-23 02:01:31,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-23 02:01:31,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:31,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:01:31,239 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:01:31,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-23 02:01:31,245 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:01:31,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2024-11-23 02:01:31,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-23 02:01:31,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:01:31,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103057259] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:01:31,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:01:31,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 17 [2024-11-23 02:01:31,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225541979] [2024-11-23 02:01:31,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:01:31,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 02:01:31,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:31,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 02:01:31,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=283, Unknown=2, NotChecked=0, Total=342 [2024-11-23 02:01:31,455 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 105 [2024-11-23 02:01:31,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 129 transitions, 596 flow. Second operand has 19 states, 19 states have (on average 34.8421052631579) internal successors, (662), 19 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:31,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:31,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 105 [2024-11-23 02:01:31,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:32,072 INFO L124 PetriNetUnfolderBase]: 1157/2387 cut-off events. [2024-11-23 02:01:32,072 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-11-23 02:01:32,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4202 conditions, 2387 events. 1157/2387 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16269 event pairs, 826 based on Foata normal form. 1/1807 useless extension candidates. Maximal degree in co-relation 4107. Up to 1530 conditions per place. [2024-11-23 02:01:32,081 INFO L140 encePairwiseOnDemand]: 85/105 looper letters, 80 selfloop transitions, 28 changer transitions 0/134 dead transitions. [2024-11-23 02:01:32,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 134 transitions, 820 flow [2024-11-23 02:01:32,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 02:01:32,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-23 02:01:32,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 547 transitions. [2024-11-23 02:01:32,083 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37210884353741497 [2024-11-23 02:01:32,083 INFO L175 Difference]: Start difference. First operand has 122 places, 129 transitions, 596 flow. Second operand 14 states and 547 transitions. [2024-11-23 02:01:32,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 134 transitions, 820 flow [2024-11-23 02:01:32,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 134 transitions, 768 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-23 02:01:32,086 INFO L231 Difference]: Finished difference. Result has 126 places, 128 transitions, 608 flow [2024-11-23 02:01:32,086 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=608, PETRI_PLACES=126, PETRI_TRANSITIONS=128} [2024-11-23 02:01:32,087 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 26 predicate places. [2024-11-23 02:01:32,087 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 128 transitions, 608 flow [2024-11-23 02:01:32,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 34.8421052631579) internal successors, (662), 19 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:32,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:32,087 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:32,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-23 02:01:32,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:32,291 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:32,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:32,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1592819132, now seen corresponding path program 1 times [2024-11-23 02:01:32,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:32,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509219606] [2024-11-23 02:01:32,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:32,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:32,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:32,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509219606] [2024-11-23 02:01:32,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509219606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:32,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102184647] [2024-11-23 02:01:32,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:32,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:32,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:32,561 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:32,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 02:01:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:32,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-23 02:01:32,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:32,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 02:01:32,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 02:01:32,681 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-23 02:01:32,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-23 02:01:32,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-23 02:01:32,745 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-23 02:01:32,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-11-23 02:01:32,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-23 02:01:32,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:32,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:01:32,926 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:01:32,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-23 02:01:32,932 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:01:32,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-11-23 02:01:32,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-23 02:01:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:01:32,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102184647] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:01:32,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:01:32,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 18 [2024-11-23 02:01:32,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125526757] [2024-11-23 02:01:32,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:01:32,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 02:01:32,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:32,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 02:01:32,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=316, Unknown=3, NotChecked=0, Total=380 [2024-11-23 02:01:33,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 105 [2024-11-23 02:01:33,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 128 transitions, 608 flow. Second operand has 20 states, 20 states have (on average 34.85) internal successors, (697), 20 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:33,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:33,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 105 [2024-11-23 02:01:33,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:33,883 INFO L124 PetriNetUnfolderBase]: 1157/2387 cut-off events. [2024-11-23 02:01:33,883 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2024-11-23 02:01:33,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4221 conditions, 2387 events. 1157/2387 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16241 event pairs, 826 based on Foata normal form. 4/1812 useless extension candidates. Maximal degree in co-relation 4148. Up to 1534 conditions per place. [2024-11-23 02:01:33,892 INFO L140 encePairwiseOnDemand]: 84/105 looper letters, 74 selfloop transitions, 32 changer transitions 1/133 dead transitions. [2024-11-23 02:01:33,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 133 transitions, 844 flow [2024-11-23 02:01:33,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 02:01:33,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-23 02:01:33,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 639 transitions. [2024-11-23 02:01:33,894 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35798319327731093 [2024-11-23 02:01:33,894 INFO L175 Difference]: Start difference. First operand has 126 places, 128 transitions, 608 flow. Second operand 17 states and 639 transitions. [2024-11-23 02:01:33,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 133 transitions, 844 flow [2024-11-23 02:01:33,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 133 transitions, 822 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-23 02:01:33,900 INFO L231 Difference]: Finished difference. Result has 140 places, 131 transitions, 679 flow [2024-11-23 02:01:33,900 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=679, PETRI_PLACES=140, PETRI_TRANSITIONS=131} [2024-11-23 02:01:33,901 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 40 predicate places. [2024-11-23 02:01:33,901 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 131 transitions, 679 flow [2024-11-23 02:01:33,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 34.85) internal successors, (697), 20 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:33,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:33,901 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:33,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 02:01:34,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:34,106 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:34,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:34,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1713689486, now seen corresponding path program 1 times [2024-11-23 02:01:34,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:34,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444966877] [2024-11-23 02:01:34,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:34,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:34,224 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 02:01:34,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:34,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444966877] [2024-11-23 02:01:34,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444966877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:34,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326414313] [2024-11-23 02:01:34,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:34,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:34,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:34,227 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:34,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 02:01:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:34,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-23 02:01:34,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:34,365 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-23 02:01:34,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:01:34,426 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-23 02:01:34,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326414313] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:01:34,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:01:34,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2024-11-23 02:01:34,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867805420] [2024-11-23 02:01:34,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:01:34,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-23 02:01:34,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:34,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-23 02:01:34,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-23 02:01:34,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-23 02:01:34,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 131 transitions, 679 flow. Second operand has 21 states, 21 states have (on average 50.285714285714285) internal successors, (1056), 21 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:34,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:34,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-23 02:01:34,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:35,134 INFO L124 PetriNetUnfolderBase]: 2301/4722 cut-off events. [2024-11-23 02:01:35,134 INFO L125 PetriNetUnfolderBase]: For 361/361 co-relation queries the response was YES. [2024-11-23 02:01:35,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8239 conditions, 4722 events. 2301/4722 cut-off events. For 361/361 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 34357 event pairs, 1652 based on Foata normal form. 2/3585 useless extension candidates. Maximal degree in co-relation 8188. Up to 1551 conditions per place. [2024-11-23 02:01:35,152 INFO L140 encePairwiseOnDemand]: 95/105 looper letters, 91 selfloop transitions, 46 changer transitions 0/180 dead transitions. [2024-11-23 02:01:35,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 180 transitions, 1178 flow [2024-11-23 02:01:35,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 02:01:35,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 02:01:35,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 648 transitions. [2024-11-23 02:01:35,154 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.561038961038961 [2024-11-23 02:01:35,154 INFO L175 Difference]: Start difference. First operand has 140 places, 131 transitions, 679 flow. Second operand 11 states and 648 transitions. [2024-11-23 02:01:35,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 180 transitions, 1178 flow [2024-11-23 02:01:35,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 180 transitions, 1112 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-11-23 02:01:35,158 INFO L231 Difference]: Finished difference. Result has 141 places, 137 transitions, 774 flow [2024-11-23 02:01:35,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=774, PETRI_PLACES=141, PETRI_TRANSITIONS=137} [2024-11-23 02:01:35,158 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 41 predicate places. [2024-11-23 02:01:35,159 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 137 transitions, 774 flow [2024-11-23 02:01:35,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.285714285714285) internal successors, (1056), 21 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:35,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:35,159 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:35,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 02:01:35,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-23 02:01:35,360 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:35,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:35,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1944564241, now seen corresponding path program 1 times [2024-11-23 02:01:35,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:35,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578057082] [2024-11-23 02:01:35,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:35,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:35,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 02:01:35,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:35,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578057082] [2024-11-23 02:01:35,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578057082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:01:35,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:01:35,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 02:01:35,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635206007] [2024-11-23 02:01:35,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:01:35,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 02:01:35,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:35,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 02:01:35,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 02:01:35,452 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 105 [2024-11-23 02:01:35,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 137 transitions, 774 flow. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:35,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:35,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 105 [2024-11-23 02:01:35,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:35,891 INFO L124 PetriNetUnfolderBase]: 2301/4710 cut-off events. [2024-11-23 02:01:35,891 INFO L125 PetriNetUnfolderBase]: For 339/339 co-relation queries the response was YES. [2024-11-23 02:01:35,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8256 conditions, 4710 events. 2301/4710 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 34448 event pairs, 1652 based on Foata normal form. 2/3560 useless extension candidates. Maximal degree in co-relation 8205. Up to 3107 conditions per place. [2024-11-23 02:01:35,903 INFO L140 encePairwiseOnDemand]: 91/105 looper letters, 87 selfloop transitions, 20 changer transitions 0/139 dead transitions. [2024-11-23 02:01:35,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 139 transitions, 992 flow [2024-11-23 02:01:35,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 02:01:35,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 02:01:35,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 303 transitions. [2024-11-23 02:01:35,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48095238095238096 [2024-11-23 02:01:35,905 INFO L175 Difference]: Start difference. First operand has 141 places, 137 transitions, 774 flow. Second operand 6 states and 303 transitions. [2024-11-23 02:01:35,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 139 transitions, 992 flow [2024-11-23 02:01:35,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 139 transitions, 911 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-23 02:01:35,910 INFO L231 Difference]: Finished difference. Result has 140 places, 139 transitions, 763 flow [2024-11-23 02:01:35,910 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=763, PETRI_PLACES=140, PETRI_TRANSITIONS=139} [2024-11-23 02:01:35,910 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 40 predicate places. [2024-11-23 02:01:35,910 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 139 transitions, 763 flow [2024-11-23 02:01:35,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:35,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:35,910 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1] [2024-11-23 02:01:35,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 02:01:35,911 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:35,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:35,911 INFO L85 PathProgramCache]: Analyzing trace with hash -45306850, now seen corresponding path program 2 times [2024-11-23 02:01:35,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:35,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401360665] [2024-11-23 02:01:35,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:01:35,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:35,920 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:01:35,921 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:01:35,947 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-23 02:01:35,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:35,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401360665] [2024-11-23 02:01:35,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401360665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:35,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642481086] [2024-11-23 02:01:35,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:01:35,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:35,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:35,949 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:35,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 02:01:36,011 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:01:36,011 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:01:36,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 02:01:36,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:36,036 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-23 02:01:36,036 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:01:36,060 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-23 02:01:36,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642481086] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:01:36,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:01:36,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-23 02:01:36,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59394320] [2024-11-23 02:01:36,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:01:36,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 02:01:36,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:36,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 02:01:36,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 02:01:36,080 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-23 02:01:36,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 139 transitions, 763 flow. Second operand has 5 states, 5 states have (on average 50.6) internal successors, (253), 5 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:36,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:36,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-23 02:01:36,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:36,416 INFO L124 PetriNetUnfolderBase]: 2303/4708 cut-off events. [2024-11-23 02:01:36,417 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2024-11-23 02:01:36,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8228 conditions, 4708 events. 2303/4708 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 34364 event pairs, 1652 based on Foata normal form. 2/3558 useless extension candidates. Maximal degree in co-relation 8176. Up to 3075 conditions per place. [2024-11-23 02:01:36,432 INFO L140 encePairwiseOnDemand]: 95/105 looper letters, 54 selfloop transitions, 40 changer transitions 0/137 dead transitions. [2024-11-23 02:01:36,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 137 transitions, 931 flow [2024-11-23 02:01:36,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 02:01:36,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 02:01:36,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 294 transitions. [2024-11-23 02:01:36,433 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-11-23 02:01:36,433 INFO L175 Difference]: Start difference. First operand has 140 places, 139 transitions, 763 flow. Second operand 5 states and 294 transitions. [2024-11-23 02:01:36,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 137 transitions, 931 flow [2024-11-23 02:01:36,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 137 transitions, 871 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-23 02:01:36,437 INFO L231 Difference]: Finished difference. Result has 134 places, 137 transitions, 763 flow [2024-11-23 02:01:36,437 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=763, PETRI_PLACES=134, PETRI_TRANSITIONS=137} [2024-11-23 02:01:36,437 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 34 predicate places. [2024-11-23 02:01:36,437 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 137 transitions, 763 flow [2024-11-23 02:01:36,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.6) internal successors, (253), 5 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:36,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:36,437 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:36,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-23 02:01:36,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-23 02:01:36,638 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:36,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:36,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1423829912, now seen corresponding path program 1 times [2024-11-23 02:01:36,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:36,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585657328] [2024-11-23 02:01:36,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:36,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 02:01:36,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:36,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585657328] [2024-11-23 02:01:36,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585657328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:01:36,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:01:36,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 02:01:36,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472306545] [2024-11-23 02:01:36,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:01:36,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:01:36,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:36,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:01:36,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:01:36,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 105 [2024-11-23 02:01:36,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 137 transitions, 763 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:36,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:36,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 105 [2024-11-23 02:01:36,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:37,330 INFO L124 PetriNetUnfolderBase]: 4917/8286 cut-off events. [2024-11-23 02:01:37,330 INFO L125 PetriNetUnfolderBase]: For 302/302 co-relation queries the response was YES. [2024-11-23 02:01:37,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15385 conditions, 8286 events. 4917/8286 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 57056 event pairs, 1728 based on Foata normal form. 244/6240 useless extension candidates. Maximal degree in co-relation 15340. Up to 5080 conditions per place. [2024-11-23 02:01:37,366 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 133 selfloop transitions, 4 changer transitions 0/178 dead transitions. [2024-11-23 02:01:37,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 178 transitions, 1123 flow [2024-11-23 02:01:37,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:01:37,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:01:37,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2024-11-23 02:01:37,367 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7238095238095238 [2024-11-23 02:01:37,367 INFO L175 Difference]: Start difference. First operand has 134 places, 137 transitions, 763 flow. Second operand 4 states and 304 transitions. [2024-11-23 02:01:37,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 178 transitions, 1123 flow [2024-11-23 02:01:37,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 178 transitions, 1048 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 02:01:37,372 INFO L231 Difference]: Finished difference. Result has 136 places, 140 transitions, 717 flow [2024-11-23 02:01:37,372 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=717, PETRI_PLACES=136, PETRI_TRANSITIONS=140} [2024-11-23 02:01:37,373 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 36 predicate places. [2024-11-23 02:01:37,373 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 140 transitions, 717 flow [2024-11-23 02:01:37,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:37,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:37,373 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:37,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 02:01:37,374 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:37,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:37,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1883356323, now seen corresponding path program 1 times [2024-11-23 02:01:37,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:37,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884231121] [2024-11-23 02:01:37,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:37,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 02:01:37,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:37,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884231121] [2024-11-23 02:01:37,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884231121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:01:37,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:01:37,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:01:37,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747714376] [2024-11-23 02:01:37,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:01:37,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 02:01:37,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:37,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 02:01:37,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 02:01:37,422 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 105 [2024-11-23 02:01:37,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 140 transitions, 717 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:37,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:37,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 105 [2024-11-23 02:01:37,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:38,165 INFO L124 PetriNetUnfolderBase]: 6023/10884 cut-off events. [2024-11-23 02:01:38,165 INFO L125 PetriNetUnfolderBase]: For 3823/4163 co-relation queries the response was YES. [2024-11-23 02:01:38,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23284 conditions, 10884 events. 6023/10884 cut-off events. For 3823/4163 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 82887 event pairs, 2568 based on Foata normal form. 0/8344 useless extension candidates. Maximal degree in co-relation 23237. Up to 4974 conditions per place. [2024-11-23 02:01:38,211 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 116 selfloop transitions, 3 changer transitions 0/162 dead transitions. [2024-11-23 02:01:38,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 162 transitions, 1020 flow [2024-11-23 02:01:38,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 02:01:38,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 02:01:38,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2024-11-23 02:01:38,213 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7396825396825397 [2024-11-23 02:01:38,213 INFO L175 Difference]: Start difference. First operand has 136 places, 140 transitions, 717 flow. Second operand 3 states and 233 transitions. [2024-11-23 02:01:38,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 162 transitions, 1020 flow [2024-11-23 02:01:38,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 162 transitions, 1014 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:01:38,219 INFO L231 Difference]: Finished difference. Result has 138 places, 142 transitions, 735 flow [2024-11-23 02:01:38,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=735, PETRI_PLACES=138, PETRI_TRANSITIONS=142} [2024-11-23 02:01:38,220 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 38 predicate places. [2024-11-23 02:01:38,220 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 142 transitions, 735 flow [2024-11-23 02:01:38,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:38,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:38,220 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:38,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 02:01:38,220 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:38,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:38,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1883356329, now seen corresponding path program 1 times [2024-11-23 02:01:38,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:38,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772571714] [2024-11-23 02:01:38,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:38,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:38,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:01:38,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:38,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772571714] [2024-11-23 02:01:38,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772571714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:38,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811602003] [2024-11-23 02:01:38,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:38,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:38,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:38,297 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:38,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 02:01:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:38,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 02:01:38,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:38,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:01:38,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:01:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:01:38,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811602003] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:01:38,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:01:38,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-23 02:01:38,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717737218] [2024-11-23 02:01:38,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:01:38,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 02:01:38,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:38,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 02:01:38,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-23 02:01:38,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 105 [2024-11-23 02:01:38,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 142 transitions, 735 flow. Second operand has 15 states, 15 states have (on average 50.06666666666667) internal successors, (751), 15 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:38,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:38,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 105 [2024-11-23 02:01:38,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:39,433 INFO L124 PetriNetUnfolderBase]: 3768/7290 cut-off events. [2024-11-23 02:01:39,434 INFO L125 PetriNetUnfolderBase]: For 2700/3035 co-relation queries the response was YES. [2024-11-23 02:01:39,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15347 conditions, 7290 events. 3768/7290 cut-off events. For 2700/3035 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 51923 event pairs, 2538 based on Foata normal form. 77/5946 useless extension candidates. Maximal degree in co-relation 15299. Up to 4264 conditions per place. [2024-11-23 02:01:39,455 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 110 selfloop transitions, 45 changer transitions 0/197 dead transitions. [2024-11-23 02:01:39,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 197 transitions, 1266 flow [2024-11-23 02:01:39,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 02:01:39,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 02:01:39,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 639 transitions. [2024-11-23 02:01:39,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5532467532467532 [2024-11-23 02:01:39,457 INFO L175 Difference]: Start difference. First operand has 138 places, 142 transitions, 735 flow. Second operand 11 states and 639 transitions. [2024-11-23 02:01:39,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 197 transitions, 1266 flow [2024-11-23 02:01:39,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 197 transitions, 1261 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:01:39,461 INFO L231 Difference]: Finished difference. Result has 149 places, 144 transitions, 842 flow [2024-11-23 02:01:39,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=842, PETRI_PLACES=149, PETRI_TRANSITIONS=144} [2024-11-23 02:01:39,462 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 49 predicate places. [2024-11-23 02:01:39,462 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 144 transitions, 842 flow [2024-11-23 02:01:39,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 50.06666666666667) internal successors, (751), 15 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:39,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:39,462 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:39,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 02:01:39,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 02:01:39,663 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:39,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:39,663 INFO L85 PathProgramCache]: Analyzing trace with hash 221001158, now seen corresponding path program 1 times [2024-11-23 02:01:39,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:39,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565148476] [2024-11-23 02:01:39,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:39,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:39,743 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 02:01:39,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:39,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565148476] [2024-11-23 02:01:39,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565148476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:39,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145625440] [2024-11-23 02:01:39,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:39,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:39,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:39,746 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:39,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 02:01:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:39,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 02:01:39,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:39,880 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 02:01:39,881 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:01:39,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 02:01:39,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145625440] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:01:39,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:01:39,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-23 02:01:39,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997684507] [2024-11-23 02:01:39,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:01:39,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 02:01:39,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:39,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 02:01:39,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-23 02:01:40,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-23 02:01:40,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 144 transitions, 842 flow. Second operand has 15 states, 15 states have (on average 51.0) internal successors, (765), 15 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:40,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:40,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-23 02:01:40,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:40,676 INFO L124 PetriNetUnfolderBase]: 3163/6334 cut-off events. [2024-11-23 02:01:40,676 INFO L125 PetriNetUnfolderBase]: For 2764/2885 co-relation queries the response was YES. [2024-11-23 02:01:40,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13477 conditions, 6334 events. 3163/6334 cut-off events. For 2764/2885 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 49056 event pairs, 2184 based on Foata normal form. 38/5105 useless extension candidates. Maximal degree in co-relation 13427. Up to 3850 conditions per place. [2024-11-23 02:01:40,698 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 100 selfloop transitions, 45 changer transitions 0/188 dead transitions. [2024-11-23 02:01:40,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 188 transitions, 1309 flow [2024-11-23 02:01:40,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 02:01:40,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 02:01:40,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 646 transitions. [2024-11-23 02:01:40,700 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5593073593073593 [2024-11-23 02:01:40,700 INFO L175 Difference]: Start difference. First operand has 149 places, 144 transitions, 842 flow. Second operand 11 states and 646 transitions. [2024-11-23 02:01:40,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 188 transitions, 1309 flow [2024-11-23 02:01:40,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 188 transitions, 1225 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-23 02:01:40,707 INFO L231 Difference]: Finished difference. Result has 153 places, 146 transitions, 868 flow [2024-11-23 02:01:40,707 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=868, PETRI_PLACES=153, PETRI_TRANSITIONS=146} [2024-11-23 02:01:40,708 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 53 predicate places. [2024-11-23 02:01:40,708 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 146 transitions, 868 flow [2024-11-23 02:01:40,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 51.0) internal successors, (765), 15 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:40,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:40,708 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:40,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 02:01:40,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 02:01:40,908 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:40,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:40,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1981412927, now seen corresponding path program 1 times [2024-11-23 02:01:40,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:40,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957212333] [2024-11-23 02:01:40,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:40,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:40,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 02:01:40,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:40,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957212333] [2024-11-23 02:01:40,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957212333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:01:40,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:01:40,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 02:01:40,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383893289] [2024-11-23 02:01:40,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:01:40,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:01:40,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:40,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:01:40,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:01:40,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 105 [2024-11-23 02:01:40,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 146 transitions, 868 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:40,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:40,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 105 [2024-11-23 02:01:40,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:42,057 INFO L124 PetriNetUnfolderBase]: 7309/12773 cut-off events. [2024-11-23 02:01:42,057 INFO L125 PetriNetUnfolderBase]: For 9375/9785 co-relation queries the response was YES. [2024-11-23 02:01:42,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30206 conditions, 12773 events. 7309/12773 cut-off events. For 9375/9785 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 94237 event pairs, 3698 based on Foata normal form. 231/10511 useless extension candidates. Maximal degree in co-relation 30120. Up to 6584 conditions per place. [2024-11-23 02:01:42,124 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 168 selfloop transitions, 3 changer transitions 0/211 dead transitions. [2024-11-23 02:01:42,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 211 transitions, 1495 flow [2024-11-23 02:01:42,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:01:42,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:01:42,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2024-11-23 02:01:42,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7238095238095238 [2024-11-23 02:01:42,126 INFO L175 Difference]: Start difference. First operand has 153 places, 146 transitions, 868 flow. Second operand 4 states and 304 transitions. [2024-11-23 02:01:42,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 211 transitions, 1495 flow [2024-11-23 02:01:42,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 211 transitions, 1411 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-23 02:01:42,138 INFO L231 Difference]: Finished difference. Result has 150 places, 148 transitions, 806 flow [2024-11-23 02:01:42,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=806, PETRI_PLACES=150, PETRI_TRANSITIONS=148} [2024-11-23 02:01:42,138 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 50 predicate places. [2024-11-23 02:01:42,138 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 148 transitions, 806 flow [2024-11-23 02:01:42,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:42,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:42,139 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:42,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 02:01:42,139 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:42,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:42,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2061348615, now seen corresponding path program 2 times [2024-11-23 02:01:42,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:42,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741668595] [2024-11-23 02:01:42,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:01:42,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:42,185 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:01:42,185 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:01:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 02:01:42,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:42,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741668595] [2024-11-23 02:01:42,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741668595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:42,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247832553] [2024-11-23 02:01:42,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:01:42,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:42,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:42,847 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:42,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 02:01:42,933 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:01:42,933 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:01:42,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-23 02:01:42,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:42,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 02:01:43,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 02:01:43,036 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-23 02:01:43,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-23 02:01:43,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-23 02:01:43,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-23 02:01:43,139 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:01:43,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:01:43,182 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_391 (Array Int Int))) (< 0 (+ 9223372039002259456 (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_391) c_~B~0.base) (+ 4 c_~B~0.offset))))) is different from false [2024-11-23 02:01:43,226 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:01:43,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-23 02:01:43,238 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:01:43,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2024-11-23 02:01:43,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-23 02:01:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 4 not checked. [2024-11-23 02:01:43,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247832553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:01:43,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:01:43,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 27 [2024-11-23 02:01:43,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200333796] [2024-11-23 02:01:43,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:01:43,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-23 02:01:43,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:43,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-23 02:01:43,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=624, Unknown=1, NotChecked=50, Total=756 [2024-11-23 02:01:43,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 105 [2024-11-23 02:01:43,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 148 transitions, 806 flow. Second operand has 28 states, 28 states have (on average 46.0) internal successors, (1288), 28 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:43,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:43,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 105 [2024-11-23 02:01:43,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:46,880 INFO L124 PetriNetUnfolderBase]: 14286/23404 cut-off events. [2024-11-23 02:01:46,881 INFO L125 PetriNetUnfolderBase]: For 20362/22433 co-relation queries the response was YES. [2024-11-23 02:01:46,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60831 conditions, 23404 events. 14286/23404 cut-off events. For 20362/22433 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 173433 event pairs, 3201 based on Foata normal form. 382/18932 useless extension candidates. Maximal degree in co-relation 60641. Up to 3441 conditions per place. [2024-11-23 02:01:46,991 INFO L140 encePairwiseOnDemand]: 85/105 looper letters, 289 selfloop transitions, 73 changer transitions 0/400 dead transitions. [2024-11-23 02:01:46,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 400 transitions, 2615 flow [2024-11-23 02:01:46,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-23 02:01:46,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-23 02:01:46,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1781 transitions. [2024-11-23 02:01:46,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48462585034013606 [2024-11-23 02:01:46,993 INFO L175 Difference]: Start difference. First operand has 150 places, 148 transitions, 806 flow. Second operand 35 states and 1781 transitions. [2024-11-23 02:01:46,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 400 transitions, 2615 flow [2024-11-23 02:01:47,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 400 transitions, 2595 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:01:47,015 INFO L231 Difference]: Finished difference. Result has 189 places, 180 transitions, 1235 flow [2024-11-23 02:01:47,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1235, PETRI_PLACES=189, PETRI_TRANSITIONS=180} [2024-11-23 02:01:47,016 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 89 predicate places. [2024-11-23 02:01:47,016 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 180 transitions, 1235 flow [2024-11-23 02:01:47,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 46.0) internal successors, (1288), 28 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:47,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:47,016 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:47,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 02:01:47,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:47,217 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:47,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:47,217 INFO L85 PathProgramCache]: Analyzing trace with hash -2061348614, now seen corresponding path program 1 times [2024-11-23 02:01:47,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:47,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835261501] [2024-11-23 02:01:47,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:47,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:01:47,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:47,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835261501] [2024-11-23 02:01:47,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835261501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:47,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699537309] [2024-11-23 02:01:47,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:47,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:47,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:47,698 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:47,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 02:01:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:47,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-23 02:01:47,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:47,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 02:01:47,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-23 02:01:47,867 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-23 02:01:47,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-23 02:01:47,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-23 02:01:47,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-23 02:01:47,933 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 02:01:47,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:01:48,037 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:01:48,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-23 02:01:48,043 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:01:48,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2024-11-23 02:01:48,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-23 02:01:48,135 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 02:01:48,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699537309] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:01:48,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:01:48,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 27 [2024-11-23 02:01:48,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590444233] [2024-11-23 02:01:48,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:01:48,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-23 02:01:48,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:48,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-23 02:01:48,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=667, Unknown=4, NotChecked=0, Total=756 [2024-11-23 02:01:48,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 105 [2024-11-23 02:01:48,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 180 transitions, 1235 flow. Second operand has 28 states, 28 states have (on average 45.964285714285715) internal successors, (1287), 28 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:48,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:48,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 105 [2024-11-23 02:01:48,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:51,637 INFO L124 PetriNetUnfolderBase]: 13603/22436 cut-off events. [2024-11-23 02:01:51,637 INFO L125 PetriNetUnfolderBase]: For 27175/29296 co-relation queries the response was YES. [2024-11-23 02:01:51,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65578 conditions, 22436 events. 13603/22436 cut-off events. For 27175/29296 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 165001 event pairs, 3438 based on Foata normal form. 348/18596 useless extension candidates. Maximal degree in co-relation 65445. Up to 6454 conditions per place. [2024-11-23 02:01:51,754 INFO L140 encePairwiseOnDemand]: 85/105 looper letters, 160 selfloop transitions, 68 changer transitions 0/266 dead transitions. [2024-11-23 02:01:51,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 266 transitions, 2039 flow [2024-11-23 02:01:51,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-23 02:01:51,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-23 02:01:51,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1061 transitions. [2024-11-23 02:01:51,755 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4811791383219955 [2024-11-23 02:01:51,756 INFO L175 Difference]: Start difference. First operand has 189 places, 180 transitions, 1235 flow. Second operand 21 states and 1061 transitions. [2024-11-23 02:01:51,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 266 transitions, 2039 flow [2024-11-23 02:01:51,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 266 transitions, 1910 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-11-23 02:01:51,792 INFO L231 Difference]: Finished difference. Result has 194 places, 181 transitions, 1257 flow [2024-11-23 02:01:51,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1257, PETRI_PLACES=194, PETRI_TRANSITIONS=181} [2024-11-23 02:01:51,793 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 94 predicate places. [2024-11-23 02:01:51,793 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 181 transitions, 1257 flow [2024-11-23 02:01:51,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 45.964285714285715) internal successors, (1287), 28 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:51,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:51,794 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:51,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-23 02:01:51,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-23 02:01:51,994 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:51,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:51,995 INFO L85 PathProgramCache]: Analyzing trace with hash -2061348612, now seen corresponding path program 1 times [2024-11-23 02:01:51,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:51,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214216112] [2024-11-23 02:01:51,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:51,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:52,462 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:01:52,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:52,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214216112] [2024-11-23 02:01:52,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214216112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:52,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128324959] [2024-11-23 02:01:52,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:52,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:52,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:52,465 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:52,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 02:01:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:52,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-23 02:01:52,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:52,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 02:01:52,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-23 02:01:52,641 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-23 02:01:52,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-23 02:01:52,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-23 02:01:52,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-23 02:01:52,703 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-23 02:01:52,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-23 02:01:52,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-23 02:01:52,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-23 02:01:52,864 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:01:52,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:01:53,109 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:01:53,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-23 02:01:53,118 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:01:53,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 75 [2024-11-23 02:01:53,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2024-11-23 02:01:53,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 50 [2024-11-23 02:01:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:01:53,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128324959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:01:53,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:01:53,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2024-11-23 02:01:53,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383585472] [2024-11-23 02:01:53,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:01:53,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-23 02:01:53,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:53,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-23 02:01:53,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=650, Unknown=5, NotChecked=0, Total=756 [2024-11-23 02:01:56,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 105 [2024-11-23 02:01:56,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 181 transitions, 1257 flow. Second operand has 28 states, 28 states have (on average 47.0) internal successors, (1316), 28 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:56,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:56,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 105 [2024-11-23 02:01:56,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:58,763 INFO L124 PetriNetUnfolderBase]: 10561/17422 cut-off events. [2024-11-23 02:01:58,764 INFO L125 PetriNetUnfolderBase]: For 23705/25813 co-relation queries the response was YES. [2024-11-23 02:01:58,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53717 conditions, 17422 events. 10561/17422 cut-off events. For 23705/25813 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 126538 event pairs, 5442 based on Foata normal form. 432/15773 useless extension candidates. Maximal degree in co-relation 53578. Up to 9441 conditions per place. [2024-11-23 02:01:58,870 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 166 selfloop transitions, 58 changer transitions 0/263 dead transitions. [2024-11-23 02:01:58,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 263 transitions, 2071 flow [2024-11-23 02:01:58,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 02:01:58,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-23 02:01:58,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 799 transitions. [2024-11-23 02:01:58,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5073015873015873 [2024-11-23 02:01:58,872 INFO L175 Difference]: Start difference. First operand has 194 places, 181 transitions, 1257 flow. Second operand 15 states and 799 transitions. [2024-11-23 02:01:58,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 263 transitions, 2071 flow [2024-11-23 02:01:58,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 263 transitions, 1996 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-11-23 02:01:58,922 INFO L231 Difference]: Finished difference. Result has 196 places, 185 transitions, 1384 flow [2024-11-23 02:01:58,922 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1179, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1384, PETRI_PLACES=196, PETRI_TRANSITIONS=185} [2024-11-23 02:01:58,923 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 96 predicate places. [2024-11-23 02:01:58,923 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 185 transitions, 1384 flow [2024-11-23 02:01:58,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 47.0) internal successors, (1316), 28 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:58,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:58,923 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:58,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-23 02:01:59,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:59,124 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:01:59,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:59,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2061348611, now seen corresponding path program 1 times [2024-11-23 02:01:59,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:59,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927982415] [2024-11-23 02:01:59,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:59,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:59,595 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:01:59,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:59,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927982415] [2024-11-23 02:01:59,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927982415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:59,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249693833] [2024-11-23 02:01:59,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:59,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:59,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:59,598 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:59,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 02:01:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:59,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-23 02:01:59,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:59,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 02:01:59,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-23 02:01:59,767 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-23 02:01:59,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-23 02:01:59,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-23 02:01:59,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-23 02:01:59,828 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-23 02:01:59,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-23 02:01:59,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-23 02:01:59,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-23 02:01:59,899 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:01:59,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:02:00,100 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:02:00,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2024-11-23 02:02:00,109 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:02:00,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2024-11-23 02:02:00,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-11-23 02:02:00,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2024-11-23 02:02:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:02:00,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249693833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:02:00,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:02:00,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2024-11-23 02:02:00,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282633697] [2024-11-23 02:02:00,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:02:00,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-23 02:02:00,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:00,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-23 02:02:00,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=651, Unknown=4, NotChecked=0, Total=756 [2024-11-23 02:02:00,422 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 105 [2024-11-23 02:02:00,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 185 transitions, 1384 flow. Second operand has 28 states, 28 states have (on average 47.0) internal successors, (1316), 28 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:02:00,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:00,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 105 [2024-11-23 02:02:00,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:02,829 INFO L124 PetriNetUnfolderBase]: 10143/17472 cut-off events. [2024-11-23 02:02:02,829 INFO L125 PetriNetUnfolderBase]: For 29694/31457 co-relation queries the response was YES. [2024-11-23 02:02:02,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53565 conditions, 17472 events. 10143/17472 cut-off events. For 29694/31457 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 130662 event pairs, 4958 based on Foata normal form. 329/15786 useless extension candidates. Maximal degree in co-relation 53422. Up to 9441 conditions per place. [2024-11-23 02:02:02,916 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 165 selfloop transitions, 58 changer transitions 0/262 dead transitions. [2024-11-23 02:02:02,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 262 transitions, 2143 flow [2024-11-23 02:02:02,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 02:02:02,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-23 02:02:02,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 798 transitions. [2024-11-23 02:02:02,917 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-11-23 02:02:02,917 INFO L175 Difference]: Start difference. First operand has 196 places, 185 transitions, 1384 flow. Second operand 15 states and 798 transitions. [2024-11-23 02:02:02,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 262 transitions, 2143 flow [2024-11-23 02:02:02,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 262 transitions, 2089 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 02:02:02,947 INFO L231 Difference]: Finished difference. Result has 206 places, 184 transitions, 1440 flow [2024-11-23 02:02:02,947 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1440, PETRI_PLACES=206, PETRI_TRANSITIONS=184} [2024-11-23 02:02:02,947 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 106 predicate places. [2024-11-23 02:02:02,947 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 184 transitions, 1440 flow [2024-11-23 02:02:02,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 47.0) internal successors, (1316), 28 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:02:02,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:02,948 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:02,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-23 02:02:03,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:02:03,148 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:02:03,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:03,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1001792412, now seen corresponding path program 2 times [2024-11-23 02:02:03,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:03,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960706221] [2024-11-23 02:02:03,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:02:03,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:03,165 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:02:03,165 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:02:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-23 02:02:03,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:03,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960706221] [2024-11-23 02:02:03,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960706221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:03,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:03,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 02:02:03,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331655251] [2024-11-23 02:02:03,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:03,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 02:02:03,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:03,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 02:02:03,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 02:02:03,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 105 [2024-11-23 02:02:03,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 184 transitions, 1440 flow. Second operand has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:02:03,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:03,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 105 [2024-11-23 02:02:03,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:04,840 INFO L124 PetriNetUnfolderBase]: 10895/17904 cut-off events. [2024-11-23 02:02:04,840 INFO L125 PetriNetUnfolderBase]: For 44795/46225 co-relation queries the response was YES. [2024-11-23 02:02:04,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59448 conditions, 17904 events. 10895/17904 cut-off events. For 44795/46225 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 132353 event pairs, 2386 based on Foata normal form. 826/16402 useless extension candidates. Maximal degree in co-relation 59306. Up to 6800 conditions per place. [2024-11-23 02:02:04,955 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 207 selfloop transitions, 9 changer transitions 0/257 dead transitions. [2024-11-23 02:02:04,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 257 transitions, 2468 flow [2024-11-23 02:02:04,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:02:04,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:02:04,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 296 transitions. [2024-11-23 02:02:04,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7047619047619048 [2024-11-23 02:02:04,956 INFO L175 Difference]: Start difference. First operand has 206 places, 184 transitions, 1440 flow. Second operand 4 states and 296 transitions. [2024-11-23 02:02:04,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 257 transitions, 2468 flow [2024-11-23 02:02:04,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 257 transitions, 2359 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-23 02:02:04,993 INFO L231 Difference]: Finished difference. Result has 196 places, 183 transitions, 1363 flow [2024-11-23 02:02:04,993 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1345, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1363, PETRI_PLACES=196, PETRI_TRANSITIONS=183} [2024-11-23 02:02:04,993 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 96 predicate places. [2024-11-23 02:02:04,993 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 183 transitions, 1363 flow [2024-11-23 02:02:04,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:02:04,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:04,994 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:04,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 02:02:04,994 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:02:04,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:04,995 INFO L85 PathProgramCache]: Analyzing trace with hash -976053663, now seen corresponding path program 1 times [2024-11-23 02:02:04,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:04,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328904362] [2024-11-23 02:02:04,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:04,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-23 02:02:05,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:05,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328904362] [2024-11-23 02:02:05,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328904362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:05,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:05,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 02:02:05,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146525813] [2024-11-23 02:02:05,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:05,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:02:05,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:05,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:02:05,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:02:05,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 105 [2024-11-23 02:02:05,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 183 transitions, 1363 flow. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:02:05,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:05,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 105 [2024-11-23 02:02:05,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:06,723 INFO L124 PetriNetUnfolderBase]: 10009/16224 cut-off events. [2024-11-23 02:02:06,723 INFO L125 PetriNetUnfolderBase]: For 42488/43957 co-relation queries the response was YES. [2024-11-23 02:02:06,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56844 conditions, 16224 events. 10009/16224 cut-off events. For 42488/43957 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 114373 event pairs, 6210 based on Foata normal form. 818/16039 useless extension candidates. Maximal degree in co-relation 56702. Up to 11307 conditions per place. [2024-11-23 02:02:06,837 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 163 selfloop transitions, 15 changer transitions 0/218 dead transitions. [2024-11-23 02:02:06,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 218 transitions, 1893 flow [2024-11-23 02:02:06,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:02:06,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:02:06,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 288 transitions. [2024-11-23 02:02:06,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-11-23 02:02:06,839 INFO L175 Difference]: Start difference. First operand has 196 places, 183 transitions, 1363 flow. Second operand 4 states and 288 transitions. [2024-11-23 02:02:06,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 218 transitions, 1893 flow [2024-11-23 02:02:06,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 218 transitions, 1843 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 02:02:06,883 INFO L231 Difference]: Finished difference. Result has 198 places, 184 transitions, 1399 flow [2024-11-23 02:02:06,883 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1345, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1399, PETRI_PLACES=198, PETRI_TRANSITIONS=184} [2024-11-23 02:02:06,884 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 98 predicate places. [2024-11-23 02:02:06,884 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 184 transitions, 1399 flow [2024-11-23 02:02:06,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:02:06,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:06,884 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:06,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 02:02:06,884 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:02:06,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:06,885 INFO L85 PathProgramCache]: Analyzing trace with hash -990792584, now seen corresponding path program 1 times [2024-11-23 02:02:06,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:06,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618941540] [2024-11-23 02:02:06,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:06,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:06,954 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-23 02:02:06,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:06,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618941540] [2024-11-23 02:02:06,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618941540] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:02:06,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484514608] [2024-11-23 02:02:06,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:06,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:02:06,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:02:06,957 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:02:06,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-23 02:02:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:07,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:02:07,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:02:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-23 02:02:07,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:02:07,114 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-23 02:02:07,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484514608] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:02:07,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:02:07,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 02:02:07,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489039040] [2024-11-23 02:02:07,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:02:07,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 02:02:07,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:07,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 02:02:07,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 02:02:07,125 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 105 [2024-11-23 02:02:07,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 184 transitions, 1399 flow. Second operand has 12 states, 12 states have (on average 55.25) internal successors, (663), 12 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:02:07,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:07,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 105 [2024-11-23 02:02:07,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:10,122 INFO L124 PetriNetUnfolderBase]: 15957/26110 cut-off events. [2024-11-23 02:02:10,123 INFO L125 PetriNetUnfolderBase]: For 70658/72788 co-relation queries the response was YES. [2024-11-23 02:02:10,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87112 conditions, 26110 events. 15957/26110 cut-off events. For 70658/72788 co-relation queries the response was YES. Maximal size of possible extension queue 863. Compared 199874 event pairs, 3782 based on Foata normal form. 630/23838 useless extension candidates. Maximal degree in co-relation 86968. Up to 10445 conditions per place. [2024-11-23 02:02:10,306 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 407 selfloop transitions, 15 changer transitions 0/465 dead transitions. [2024-11-23 02:02:10,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 465 transitions, 4433 flow [2024-11-23 02:02:10,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 02:02:10,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 02:02:10,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 745 transitions. [2024-11-23 02:02:10,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7095238095238096 [2024-11-23 02:02:10,308 INFO L175 Difference]: Start difference. First operand has 198 places, 184 transitions, 1399 flow. Second operand 10 states and 745 transitions. [2024-11-23 02:02:10,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 465 transitions, 4433 flow [2024-11-23 02:02:10,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 465 transitions, 4363 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:02:10,359 INFO L231 Difference]: Finished difference. Result has 209 places, 193 transitions, 1469 flow [2024-11-23 02:02:10,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1385, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1469, PETRI_PLACES=209, PETRI_TRANSITIONS=193} [2024-11-23 02:02:10,360 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 109 predicate places. [2024-11-23 02:02:10,360 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 193 transitions, 1469 flow [2024-11-23 02:02:10,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 55.25) internal successors, (663), 12 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:02:10,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:10,360 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:10,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-23 02:02:10,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-23 02:02:10,561 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:02:10,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:10,561 INFO L85 PathProgramCache]: Analyzing trace with hash -406020370, now seen corresponding path program 1 times [2024-11-23 02:02:10,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:10,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825283253] [2024-11-23 02:02:10,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:10,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 02:02:10,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:10,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825283253] [2024-11-23 02:02:10,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825283253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:10,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:10,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 02:02:10,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202839276] [2024-11-23 02:02:10,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:10,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 02:02:10,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:10,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:02:10,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-23 02:02:10,698 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 105 [2024-11-23 02:02:10,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 193 transitions, 1469 flow. Second operand has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:02:10,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:10,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 105 [2024-11-23 02:02:10,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:16,606 INFO L124 PetriNetUnfolderBase]: 29781/49500 cut-off events. [2024-11-23 02:02:16,607 INFO L125 PetriNetUnfolderBase]: For 149943/153826 co-relation queries the response was YES. [2024-11-23 02:02:16,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181516 conditions, 49500 events. 29781/49500 cut-off events. For 149943/153826 co-relation queries the response was YES. Maximal size of possible extension queue 1694. Compared 421573 event pairs, 22728 based on Foata normal form. 1213/48269 useless extension candidates. Maximal degree in co-relation 181369. Up to 20422 conditions per place. [2024-11-23 02:02:17,057 INFO L140 encePairwiseOnDemand]: 95/105 looper letters, 202 selfloop transitions, 19 changer transitions 0/260 dead transitions. [2024-11-23 02:02:17,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 260 transitions, 2447 flow [2024-11-23 02:02:17,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 02:02:17,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 02:02:17,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 313 transitions. [2024-11-23 02:02:17,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5961904761904762 [2024-11-23 02:02:17,058 INFO L175 Difference]: Start difference. First operand has 209 places, 193 transitions, 1469 flow. Second operand 5 states and 313 transitions. [2024-11-23 02:02:17,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 260 transitions, 2447 flow [2024-11-23 02:02:17,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 260 transitions, 2379 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-11-23 02:02:17,347 INFO L231 Difference]: Finished difference. Result has 211 places, 195 transitions, 1504 flow [2024-11-23 02:02:17,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1430, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1504, PETRI_PLACES=211, PETRI_TRANSITIONS=195} [2024-11-23 02:02:17,347 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 111 predicate places. [2024-11-23 02:02:17,347 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 195 transitions, 1504 flow [2024-11-23 02:02:17,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:02:17,347 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:17,347 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:17,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-23 02:02:17,348 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-23 02:02:17,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:17,348 INFO L85 PathProgramCache]: Analyzing trace with hash -684955917, now seen corresponding path program 1 times [2024-11-23 02:02:17,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:17,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633729928] [2024-11-23 02:02:17,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:17,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:17,478 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 02:02:17,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:17,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633729928] [2024-11-23 02:02:17,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633729928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:02:17,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969971021] [2024-11-23 02:02:17,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:17,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:02:17,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:02:17,480 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:02:17,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-23 02:02:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:17,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-23 02:02:17,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:02:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 02:02:17,703 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:02:17,811 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 02:02:17,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969971021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:02:17,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:02:17,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-11-23 02:02:17,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869639222] [2024-11-23 02:02:17,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:02:17,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-23 02:02:17,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:17,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-23 02:02:17,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2024-11-23 02:02:17,941 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 105 [2024-11-23 02:02:17,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 195 transitions, 1504 flow. Second operand has 26 states, 26 states have (on average 46.84615384615385) internal successors, (1218), 26 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:02:17,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:17,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 105 [2024-11-23 02:02:17,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand