./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/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 ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.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.graphml --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 3a95f2ef87fd1cf5c8213f05c50508f1a1765fc5482d62813e9c15181aaf2ab6 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:33:53,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:33:53,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:33:53,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:33:53,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:33:53,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:33:53,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:33:53,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:33:53,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:33:53,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:33:53,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:33:53,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:33:53,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:33:53,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:33:53,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:33:53,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:33:53,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:33:53,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:33:53,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:33:53,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:33:53,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:33:53,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:33:53,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:33:53,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:33:53,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:33:53,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:33:53,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:33:53,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:33:53,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:33:53,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:33:53,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:33:53,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:33:53,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:33:53,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:33:53,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:33:53,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:33:53,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:33:53,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:33:53,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:33:53,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:33:53,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:33:53,637 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:33:53,671 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:33:53,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:33:53,672 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:33:53,672 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:33:53,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:33:53,673 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:33:53,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:33:53,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:33:53,674 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:33:53,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:33:53,675 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:33:53,675 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:33:53,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:33:53,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:33:53,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:33:53,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:33:53,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:33:53,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:33:53,676 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:33:53,677 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:33:53,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:33:53,677 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:33:53,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:33:53,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:33:53,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:33:53,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:33:53,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:33:53,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:33:53,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:33:53,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:33:53,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:33:53,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:33:53,679 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:33:53,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:33:53,680 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:33:53,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:33:53,680 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:33:53,680 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a95f2ef87fd1cf5c8213f05c50508f1a1765fc5482d62813e9c15181aaf2ab6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:33:53,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:33:54,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:33:54,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:33:54,008 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:33:54,008 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:33:54,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c [2023-08-30 15:33:55,247 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:33:55,401 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:33:55,401 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c [2023-08-30 15:33:55,415 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6563c371b/2bfcdffa5f664a2fae4604439845ede8/FLAG29ae73367 [2023-08-30 15:33:55,432 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6563c371b/2bfcdffa5f664a2fae4604439845ede8 [2023-08-30 15:33:55,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:33:55,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:33:55,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:33:55,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:33:55,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:33:55,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:33:55" (1/1) ... [2023-08-30 15:33:55,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13b53caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:55, skipping insertion in model container [2023-08-30 15:33:55,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:33:55" (1/1) ... [2023-08-30 15:33:55,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:33:55,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:33:55,647 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c[2761,2774] [2023-08-30 15:33:55,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:33:55,669 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:33:55,702 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c[2761,2774] [2023-08-30 15:33:55,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:33:55,720 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:33:55,721 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:33:55,726 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:33:55,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:55 WrapperNode [2023-08-30 15:33:55,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:33:55,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:33:55,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:33:55,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:33:55,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:55" (1/1) ... [2023-08-30 15:33:55,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:55" (1/1) ... [2023-08-30 15:33:55,788 INFO L138 Inliner]: procedures = 25, calls = 51, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 253 [2023-08-30 15:33:55,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:33:55,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:33:55,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:33:55,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:33:55,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:55" (1/1) ... [2023-08-30 15:33:55,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:55" (1/1) ... [2023-08-30 15:33:55,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:55" (1/1) ... [2023-08-30 15:33:55,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:55" (1/1) ... [2023-08-30 15:33:55,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:55" (1/1) ... [2023-08-30 15:33:55,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:55" (1/1) ... [2023-08-30 15:33:55,836 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:55" (1/1) ... [2023-08-30 15:33:55,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:55" (1/1) ... [2023-08-30 15:33:55,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:33:55,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:33:55,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:33:55,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:33:55,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:55" (1/1) ... [2023-08-30 15:33:55,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:33:55,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:33:55,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 15:33:55,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 15:33:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:33:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:33:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:33:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:33:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:33:55,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:33:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:33:55,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:33:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:33:55,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:33:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:33:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:33:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:33:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:33:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:33:55,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:33:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:33:55,916 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:33:56,055 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:33:56,057 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:33:56,453 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:33:56,781 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:33:56,782 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 15:33:56,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:33:56 BoogieIcfgContainer [2023-08-30 15:33:56,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:33:56,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:33:56,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:33:56,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:33:56,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:33:55" (1/3) ... [2023-08-30 15:33:56,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c0d433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:33:56, skipping insertion in model container [2023-08-30 15:33:56,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:55" (2/3) ... [2023-08-30 15:33:56,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c0d433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:33:56, skipping insertion in model container [2023-08-30 15:33:56,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:33:56" (3/3) ... [2023-08-30 15:33:56,790 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2023-08-30 15:33:56,796 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:33:56,804 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:33:56,804 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-08-30 15:33:56,804 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:33:56,942 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:33:56,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 179 transitions, 382 flow [2023-08-30 15:33:57,024 INFO L130 PetriNetUnfolder]: 12/176 cut-off events. [2023-08-30 15:33:57,024 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:33:57,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 176 events. 12/176 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 265 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 131. Up to 2 conditions per place. [2023-08-30 15:33:57,031 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 179 transitions, 382 flow [2023-08-30 15:33:57,035 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 158 transitions, 331 flow [2023-08-30 15:33:57,038 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:33:57,046 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 158 transitions, 331 flow [2023-08-30 15:33:57,048 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 158 transitions, 331 flow [2023-08-30 15:33:57,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 158 transitions, 331 flow [2023-08-30 15:33:57,098 INFO L130 PetriNetUnfolder]: 11/158 cut-off events. [2023-08-30 15:33:57,098 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:33:57,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 158 events. 11/158 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 257 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 131. Up to 2 conditions per place. [2023-08-30 15:33:57,102 INFO L119 LiptonReduction]: Number of co-enabled transitions 4158 [2023-08-30 15:34:07,863 INFO L134 LiptonReduction]: Checked pairs total: 7429 [2023-08-30 15:34:07,863 INFO L136 LiptonReduction]: Total number of compositions: 157 [2023-08-30 15:34:07,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:34:07,880 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@4b97bbbd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:34:07,880 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-08-30 15:34:07,882 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 15:34:07,883 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:34:07,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:07,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:34:07,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:34:07,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:07,887 INFO L85 PathProgramCache]: Analyzing trace with hash 32372, now seen corresponding path program 1 times [2023-08-30 15:34:07,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:07,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485698801] [2023-08-30 15:34:07,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:07,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:08,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:08,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:08,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485698801] [2023-08-30 15:34:08,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485698801] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:34:08,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:34:08,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:34:08,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26973361] [2023-08-30 15:34:08,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:34:08,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:34:08,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:08,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:34:08,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:34:08,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 336 [2023-08-30 15:34:08,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2023-08-30 15:34:08,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:08,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 336 [2023-08-30 15:34:08,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:34:11,103 INFO L130 PetriNetUnfolder]: 16609/21051 cut-off events. [2023-08-30 15:34:11,104 INFO L131 PetriNetUnfolder]: For 438/438 co-relation queries the response was YES. [2023-08-30 15:34:11,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42581 conditions, 21051 events. 16609/21051 cut-off events. For 438/438 co-relation queries the response was YES. Maximal size of possible extension queue 1941. Compared 109889 event pairs, 8878 based on Foata normal form. 0/5826 useless extension candidates. Maximal degree in co-relation 19467. Up to 10455 conditions per place. [2023-08-30 15:34:11,244 INFO L137 encePairwiseOnDemand]: 326/336 looper letters, 77 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2023-08-30 15:34:11,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 82 transitions, 352 flow [2023-08-30 15:34:11,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:34:11,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:34:11,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2023-08-30 15:34:11,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2023-08-30 15:34:11,257 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2023-08-30 15:34:11,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2023-08-30 15:34:11,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:34:11,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2023-08-30 15:34:11,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 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) [2023-08-30 15:34:11,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 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) [2023-08-30 15:34:11,269 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 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) [2023-08-30 15:34:11,271 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 115 flow. Second operand 3 states and 513 transitions. [2023-08-30 15:34:11,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 82 transitions, 352 flow [2023-08-30 15:34:11,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 82 transitions, 334 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:34:11,324 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 108 flow [2023-08-30 15:34:11,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-08-30 15:34:11,328 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -8 predicate places. [2023-08-30 15:34:11,328 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 108 flow [2023-08-30 15:34:11,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2023-08-30 15:34:11,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:11,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:34:11,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:34:11,330 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:34:11,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:11,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1004470, now seen corresponding path program 1 times [2023-08-30 15:34:11,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:11,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139279229] [2023-08-30 15:34:11,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:11,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:11,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:11,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:11,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139279229] [2023-08-30 15:34:11,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139279229] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:34:11,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234064404] [2023-08-30 15:34:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:11,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:11,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:34:11,415 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) [2023-08-30 15:34:11,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:34:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:11,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:34:11,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:34:11,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:11,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:34:11,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234064404] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:34:11,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:34:11,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 15:34:11,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197754772] [2023-08-30 15:34:11,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:34:11,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:34:11,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:11,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:34:11,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:34:11,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 336 [2023-08-30 15:34:11,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 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) [2023-08-30 15:34:11,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:11,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 336 [2023-08-30 15:34:11,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:34:14,166 INFO L130 PetriNetUnfolder]: 16609/21050 cut-off events. [2023-08-30 15:34:14,167 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2023-08-30 15:34:14,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42343 conditions, 21050 events. 16609/21050 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 1923. Compared 110947 event pairs, 8878 based on Foata normal form. 0/5828 useless extension candidates. Maximal degree in co-relation 21169. Up to 10453 conditions per place. [2023-08-30 15:34:14,296 INFO L137 encePairwiseOnDemand]: 333/336 looper letters, 76 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-30 15:34:14,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 81 transitions, 340 flow [2023-08-30 15:34:14,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:34:14,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:34:14,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 639 transitions. [2023-08-30 15:34:14,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47544642857142855 [2023-08-30 15:34:14,299 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 639 transitions. [2023-08-30 15:34:14,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 639 transitions. [2023-08-30 15:34:14,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:34:14,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 639 transitions. [2023-08-30 15:34:14,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 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) [2023-08-30 15:34:14,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 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) [2023-08-30 15:34:14,305 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 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) [2023-08-30 15:34:14,305 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 108 flow. Second operand 4 states and 639 transitions. [2023-08-30 15:34:14,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 81 transitions, 340 flow [2023-08-30 15:34:14,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 81 transitions, 338 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:34:14,308 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 106 flow [2023-08-30 15:34:14,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-08-30 15:34:14,309 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-08-30 15:34:14,309 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 106 flow [2023-08-30 15:34:14,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 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) [2023-08-30 15:34:14,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:14,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:34:14,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 15:34:14,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:14,515 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:34:14,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:14,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1004471, now seen corresponding path program 1 times [2023-08-30 15:34:14,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:14,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369992506] [2023-08-30 15:34:14,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:14,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:14,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:14,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:14,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369992506] [2023-08-30 15:34:14,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369992506] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:34:14,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831983726] [2023-08-30 15:34:14,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:14,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:14,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:34:14,619 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) [2023-08-30 15:34:14,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:34:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:14,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:34:14,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:34:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:14,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:34:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:14,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831983726] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:34:14,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:34:14,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:34:14,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530649357] [2023-08-30 15:34:14,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:34:14,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:34:14,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:14,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:34:14,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:34:14,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 336 [2023-08-30 15:34:14,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 106 flow. Second operand has 7 states, 7 states have (on average 141.14285714285714) internal successors, (988), 7 states have internal predecessors, (988), 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) [2023-08-30 15:34:14,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:14,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 336 [2023-08-30 15:34:14,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:34:19,668 INFO L130 PetriNetUnfolder]: 41521/52622 cut-off events. [2023-08-30 15:34:19,668 INFO L131 PetriNetUnfolder]: For 171/171 co-relation queries the response was YES. [2023-08-30 15:34:19,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105842 conditions, 52622 events. 41521/52622 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 4056. Compared 303234 event pairs, 22195 based on Foata normal form. 0/14582 useless extension candidates. Maximal degree in co-relation 84667. Up to 10454 conditions per place. [2023-08-30 15:34:19,904 INFO L137 encePairwiseOnDemand]: 333/336 looper letters, 187 selfloop transitions, 5 changer transitions 0/195 dead transitions. [2023-08-30 15:34:19,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 195 transitions, 822 flow [2023-08-30 15:34:19,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:34:19,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:34:19,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1035 transitions. [2023-08-30 15:34:19,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133928571428571 [2023-08-30 15:34:19,908 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1035 transitions. [2023-08-30 15:34:19,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1035 transitions. [2023-08-30 15:34:19,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:34:19,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1035 transitions. [2023-08-30 15:34:19,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 172.5) internal successors, (1035), 6 states have internal predecessors, (1035), 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) [2023-08-30 15:34:19,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 336.0) internal successors, (2352), 7 states have internal predecessors, (2352), 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) [2023-08-30 15:34:19,915 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 336.0) internal successors, (2352), 7 states have internal predecessors, (2352), 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) [2023-08-30 15:34:19,915 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 106 flow. Second operand 6 states and 1035 transitions. [2023-08-30 15:34:19,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 195 transitions, 822 flow [2023-08-30 15:34:19,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 195 transitions, 819 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:34:19,921 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 139 flow [2023-08-30 15:34:19,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=139, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2023-08-30 15:34:19,924 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2023-08-30 15:34:19,924 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 139 flow [2023-08-30 15:34:19,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 141.14285714285714) internal successors, (988), 7 states have internal predecessors, (988), 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) [2023-08-30 15:34:19,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:19,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:34:19,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 15:34:20,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 15:34:20,131 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:34:20,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:20,131 INFO L85 PathProgramCache]: Analyzing trace with hash 965145024, now seen corresponding path program 1 times [2023-08-30 15:34:20,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:20,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376156619] [2023-08-30 15:34:20,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:20,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:20,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:20,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:20,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376156619] [2023-08-30 15:34:20,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376156619] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:34:20,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:34:20,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:34:20,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207099034] [2023-08-30 15:34:20,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:34:20,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:34:20,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:20,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:34:20,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:34:20,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 336 [2023-08-30 15:34:20,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 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) [2023-08-30 15:34:20,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:20,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 336 [2023-08-30 15:34:20,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:34:23,285 INFO L130 PetriNetUnfolder]: 29857/39626 cut-off events. [2023-08-30 15:34:23,285 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2023-08-30 15:34:23,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79807 conditions, 39626 events. 29857/39626 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 3544. Compared 250148 event pairs, 18030 based on Foata normal form. 0/13196 useless extension candidates. Maximal degree in co-relation 72761. Up to 35851 conditions per place. [2023-08-30 15:34:23,454 INFO L137 encePairwiseOnDemand]: 325/336 looper letters, 95 selfloop transitions, 4 changer transitions 0/101 dead transitions. [2023-08-30 15:34:23,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 101 transitions, 454 flow [2023-08-30 15:34:23,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:34:23,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:34:23,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 773 transitions. [2023-08-30 15:34:23,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601190476190476 [2023-08-30 15:34:23,457 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 773 transitions. [2023-08-30 15:34:23,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 773 transitions. [2023-08-30 15:34:23,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:34:23,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 773 transitions. [2023-08-30 15:34:23,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 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) [2023-08-30 15:34:23,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 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) [2023-08-30 15:34:23,464 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 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) [2023-08-30 15:34:23,464 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 139 flow. Second operand 5 states and 773 transitions. [2023-08-30 15:34:23,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 101 transitions, 454 flow [2023-08-30 15:34:23,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 101 transitions, 446 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 15:34:23,466 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 167 flow [2023-08-30 15:34:23,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2023-08-30 15:34:23,467 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2023-08-30 15:34:23,468 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 167 flow [2023-08-30 15:34:23,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 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) [2023-08-30 15:34:23,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:23,468 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:34:23,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 15:34:23,469 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:34:23,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:23,469 INFO L85 PathProgramCache]: Analyzing trace with hash -139673867, now seen corresponding path program 2 times [2023-08-30 15:34:23,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:23,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614857707] [2023-08-30 15:34:23,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:23,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:23,562 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:23,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:23,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614857707] [2023-08-30 15:34:23,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614857707] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:34:23,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917166389] [2023-08-30 15:34:23,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:34:23,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:23,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:34:23,566 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) [2023-08-30 15:34:23,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:34:23,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:34:23,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:34:23,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:34:23,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:34:23,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:34:23,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:34:23,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917166389] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:34:23,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:34:23,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:34:23,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205082150] [2023-08-30 15:34:23,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:34:23,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:34:23,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:23,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:34:23,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:34:23,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 336 [2023-08-30 15:34:23,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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) [2023-08-30 15:34:23,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:23,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 336 [2023-08-30 15:34:23,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:34:27,580 INFO L130 PetriNetUnfolder]: 35064/44611 cut-off events. [2023-08-30 15:34:27,580 INFO L131 PetriNetUnfolder]: For 1939/2152 co-relation queries the response was YES. [2023-08-30 15:34:27,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101742 conditions, 44611 events. 35064/44611 cut-off events. For 1939/2152 co-relation queries the response was YES. Maximal size of possible extension queue 3678. Compared 257418 event pairs, 18875 based on Foata normal form. 214/14605 useless extension candidates. Maximal degree in co-relation 96776. Up to 44306 conditions per place. [2023-08-30 15:34:27,808 INFO L137 encePairwiseOnDemand]: 334/336 looper letters, 43 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2023-08-30 15:34:27,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 48 transitions, 245 flow [2023-08-30 15:34:27,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:34:27,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:34:27,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-08-30 15:34:27,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4593253968253968 [2023-08-30 15:34:27,811 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-08-30 15:34:27,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-08-30 15:34:27,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:34:27,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-08-30 15:34:27,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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) [2023-08-30 15:34:27,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 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) [2023-08-30 15:34:27,815 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 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) [2023-08-30 15:34:27,815 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 167 flow. Second operand 3 states and 463 transitions. [2023-08-30 15:34:27,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 48 transitions, 245 flow [2023-08-30 15:34:27,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 48 transitions, 229 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-30 15:34:27,822 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 143 flow [2023-08-30 15:34:27,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-08-30 15:34:27,823 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2023-08-30 15:34:27,823 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 143 flow [2023-08-30 15:34:27,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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) [2023-08-30 15:34:27,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:27,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:34:27,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 15:34:28,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:28,028 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:34:28,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:28,029 INFO L85 PathProgramCache]: Analyzing trace with hash -139854526, now seen corresponding path program 1 times [2023-08-30 15:34:28,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:28,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556234473] [2023-08-30 15:34:28,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:28,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:28,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:34:28,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:28,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556234473] [2023-08-30 15:34:28,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556234473] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:34:28,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:34:28,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:34:28,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733384886] [2023-08-30 15:34:28,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:34:28,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:34:28,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:28,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:34:28,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:34:28,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 336 [2023-08-30 15:34:28,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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) [2023-08-30 15:34:28,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:28,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 336 [2023-08-30 15:34:28,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:34:32,633 INFO L130 PetriNetUnfolder]: 43604/56699 cut-off events. [2023-08-30 15:34:32,634 INFO L131 PetriNetUnfolder]: For 1144/1357 co-relation queries the response was YES. [2023-08-30 15:34:32,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124827 conditions, 56699 events. 43604/56699 cut-off events. For 1144/1357 co-relation queries the response was YES. Maximal size of possible extension queue 4863. Compared 357577 event pairs, 9535 based on Foata normal form. 213/19244 useless extension candidates. Maximal degree in co-relation 124816. Up to 37137 conditions per place. [2023-08-30 15:34:32,871 INFO L137 encePairwiseOnDemand]: 330/336 looper letters, 73 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2023-08-30 15:34:32,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 378 flow [2023-08-30 15:34:32,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:34:32,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:34:32,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2023-08-30 15:34:32,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2023-08-30 15:34:32,874 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2023-08-30 15:34:32,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2023-08-30 15:34:32,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:34:32,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2023-08-30 15:34:32,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 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) [2023-08-30 15:34:32,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 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) [2023-08-30 15:34:32,877 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 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) [2023-08-30 15:34:32,878 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 143 flow. Second operand 3 states and 497 transitions. [2023-08-30 15:34:32,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 378 flow [2023-08-30 15:34:32,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 81 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:34:32,884 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 176 flow [2023-08-30 15:34:32,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2023-08-30 15:34:32,885 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-08-30 15:34:32,885 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 176 flow [2023-08-30 15:34:32,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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) [2023-08-30 15:34:32,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:32,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:34:32,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 15:34:32,886 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:34:32,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:32,886 INFO L85 PathProgramCache]: Analyzing trace with hash -139854459, now seen corresponding path program 1 times [2023-08-30 15:34:32,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:32,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582099641] [2023-08-30 15:34:32,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:32,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:32,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:34:32,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:32,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582099641] [2023-08-30 15:34:32,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582099641] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:34:32,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:34:32,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:34:32,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949509153] [2023-08-30 15:34:32,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:34:32,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:34:32,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:32,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:34:32,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:34:32,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 336 [2023-08-30 15:34:32,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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) [2023-08-30 15:34:32,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:32,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 336 [2023-08-30 15:34:32,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:34:37,638 INFO L130 PetriNetUnfolder]: 44577/58777 cut-off events. [2023-08-30 15:34:37,638 INFO L131 PetriNetUnfolder]: For 6072/6072 co-relation queries the response was YES. [2023-08-30 15:34:37,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134465 conditions, 58777 events. 44577/58777 cut-off events. For 6072/6072 co-relation queries the response was YES. Maximal size of possible extension queue 4976. Compared 386139 event pairs, 18154 based on Foata normal form. 0/22943 useless extension candidates. Maximal degree in co-relation 134452. Up to 36768 conditions per place. [2023-08-30 15:34:37,887 INFO L137 encePairwiseOnDemand]: 332/336 looper letters, 74 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2023-08-30 15:34:37,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 79 transitions, 385 flow [2023-08-30 15:34:37,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:34:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:34:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-30 15:34:37,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2023-08-30 15:34:37,890 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-30 15:34:37,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-30 15:34:37,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:34:37,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-30 15:34:37,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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) [2023-08-30 15:34:37,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 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) [2023-08-30 15:34:37,893 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 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) [2023-08-30 15:34:37,893 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 176 flow. Second operand 3 states and 496 transitions. [2023-08-30 15:34:37,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 79 transitions, 385 flow [2023-08-30 15:34:37,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:34:37,905 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 166 flow [2023-08-30 15:34:37,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2023-08-30 15:34:37,906 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-08-30 15:34:37,906 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 166 flow [2023-08-30 15:34:37,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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) [2023-08-30 15:34:37,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:37,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:34:37,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 15:34:37,906 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:34:37,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:37,907 INFO L85 PathProgramCache]: Analyzing trace with hash -139854529, now seen corresponding path program 1 times [2023-08-30 15:34:37,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:37,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983135589] [2023-08-30 15:34:37,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:37,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:38,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:38,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:38,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983135589] [2023-08-30 15:34:38,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983135589] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:34:38,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614040501] [2023-08-30 15:34:38,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:38,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:38,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:34:38,133 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) [2023-08-30 15:34:38,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:34:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:38,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 15:34:38,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:34:38,346 INFO L350 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 11 treesize of output 7 [2023-08-30 15:34:38,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:34:38,393 INFO L350 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 14 treesize of output 16 [2023-08-30 15:34:38,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:38,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:34:38,444 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_227 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_227) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296)) is different from false [2023-08-30 15:34:38,457 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:34:38,457 INFO L350 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 [2023-08-30 15:34:38,465 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:34:38,465 INFO L350 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 [2023-08-30 15:34:38,485 INFO L350 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 5 treesize of output 3 [2023-08-30 15:34:38,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 15:34:38,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614040501] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:34:38,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:34:38,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-30 15:34:38,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433931695] [2023-08-30 15:34:38,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:34:38,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 15:34:38,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:38,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 15:34:38,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2023-08-30 15:34:38,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 336 [2023-08-30 15:34:38,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 166 flow. Second operand has 12 states, 12 states have (on average 116.25) internal successors, (1395), 12 states have internal predecessors, (1395), 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) [2023-08-30 15:34:38,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:38,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 336 [2023-08-30 15:34:38,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:34:44,570 INFO L130 PetriNetUnfolder]: 56035/75535 cut-off events. [2023-08-30 15:34:44,570 INFO L131 PetriNetUnfolder]: For 13508/13508 co-relation queries the response was YES. [2023-08-30 15:34:44,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169231 conditions, 75535 events. 56035/75535 cut-off events. For 13508/13508 co-relation queries the response was YES. Maximal size of possible extension queue 7249. Compared 541624 event pairs, 20794 based on Foata normal form. 0/28461 useless extension candidates. Maximal degree in co-relation 169218. Up to 48809 conditions per place. [2023-08-30 15:34:44,898 INFO L137 encePairwiseOnDemand]: 323/336 looper letters, 93 selfloop transitions, 19 changer transitions 0/114 dead transitions. [2023-08-30 15:34:44,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 114 transitions, 565 flow [2023-08-30 15:34:44,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:34:44,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:34:44,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1029 transitions. [2023-08-30 15:34:44,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2023-08-30 15:34:44,901 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1029 transitions. [2023-08-30 15:34:44,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1029 transitions. [2023-08-30 15:34:44,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:34:44,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1029 transitions. [2023-08-30 15:34:44,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.625) internal successors, (1029), 8 states have internal predecessors, (1029), 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) [2023-08-30 15:34:44,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 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) [2023-08-30 15:34:44,907 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 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) [2023-08-30 15:34:44,907 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 166 flow. Second operand 8 states and 1029 transitions. [2023-08-30 15:34:44,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 114 transitions, 565 flow [2023-08-30 15:34:44,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 114 transitions, 557 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:34:44,917 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 280 flow [2023-08-30 15:34:44,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=280, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-08-30 15:34:44,918 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2023-08-30 15:34:44,918 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 280 flow [2023-08-30 15:34:44,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 116.25) internal successors, (1395), 12 states have internal predecessors, (1395), 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) [2023-08-30 15:34:44,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:44,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:34:44,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 15:34:45,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:45,124 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:34:45,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:45,124 INFO L85 PathProgramCache]: Analyzing trace with hash -139854530, now seen corresponding path program 1 times [2023-08-30 15:34:45,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:45,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891832599] [2023-08-30 15:34:45,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:45,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:45,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:45,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:45,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891832599] [2023-08-30 15:34:45,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891832599] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:34:45,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500115835] [2023-08-30 15:34:45,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:45,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:45,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:34:45,407 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) [2023-08-30 15:34:45,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 15:34:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:45,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 15:34:45,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:34:45,571 INFO L350 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 11 treesize of output 7 [2023-08-30 15:34:45,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:34:45,605 INFO L350 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 18 [2023-08-30 15:34:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:45,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:34:45,678 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:34:45,679 INFO L350 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 [2023-08-30 15:34:45,686 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:34:45,687 INFO L350 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 [2023-08-30 15:34:45,701 INFO L350 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 7 treesize of output 5 [2023-08-30 15:34:45,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:45,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500115835] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:34:45,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:34:45,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-30 15:34:45,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309147614] [2023-08-30 15:34:45,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:34:45,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 15:34:45,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:45,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 15:34:45,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=100, Unknown=1, NotChecked=0, Total=132 [2023-08-30 15:34:45,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 336 [2023-08-30 15:34:45,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 280 flow. Second operand has 12 states, 12 states have (on average 129.25) internal successors, (1551), 12 states have internal predecessors, (1551), 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) [2023-08-30 15:34:45,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:45,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 336 [2023-08-30 15:34:45,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:34:52,351 INFO L130 PetriNetUnfolder]: 59621/80797 cut-off events. [2023-08-30 15:34:52,351 INFO L131 PetriNetUnfolder]: For 34993/34993 co-relation queries the response was YES. [2023-08-30 15:34:52,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188667 conditions, 80797 events. 59621/80797 cut-off events. For 34993/34993 co-relation queries the response was YES. Maximal size of possible extension queue 7839. Compared 590874 event pairs, 24511 based on Foata normal form. 4/32918 useless extension candidates. Maximal degree in co-relation 188651. Up to 53993 conditions per place. [2023-08-30 15:34:52,862 INFO L137 encePairwiseOnDemand]: 323/336 looper letters, 93 selfloop transitions, 22 changer transitions 0/117 dead transitions. [2023-08-30 15:34:52,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 117 transitions, 647 flow [2023-08-30 15:34:52,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:34:52,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:34:52,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1132 transitions. [2023-08-30 15:34:52,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4211309523809524 [2023-08-30 15:34:52,865 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1132 transitions. [2023-08-30 15:34:52,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1132 transitions. [2023-08-30 15:34:52,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:34:52,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1132 transitions. [2023-08-30 15:34:52,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 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) [2023-08-30 15:34:52,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 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) [2023-08-30 15:34:52,872 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 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) [2023-08-30 15:34:52,873 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 280 flow. Second operand 8 states and 1132 transitions. [2023-08-30 15:34:52,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 117 transitions, 647 flow [2023-08-30 15:34:52,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 117 transitions, 638 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 15:34:52,888 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 344 flow [2023-08-30 15:34:52,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=344, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2023-08-30 15:34:52,893 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2023-08-30 15:34:52,893 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 344 flow [2023-08-30 15:34:52,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 129.25) internal successors, (1551), 12 states have internal predecessors, (1551), 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) [2023-08-30 15:34:52,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:52,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:34:52,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 15:34:53,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:53,094 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:34:53,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:53,095 INFO L85 PathProgramCache]: Analyzing trace with hash -202912497, now seen corresponding path program 1 times [2023-08-30 15:34:53,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:53,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311386136] [2023-08-30 15:34:53,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:53,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:53,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:53,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311386136] [2023-08-30 15:34:53,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311386136] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:34:53,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:34:53,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:34:53,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423869854] [2023-08-30 15:34:53,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:34:53,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:34:53,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:53,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:34:53,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:34:53,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 336 [2023-08-30 15:34:53,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 344 flow. Second operand has 5 states, 5 states have (on average 134.4) internal successors, (672), 5 states have internal predecessors, (672), 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) [2023-08-30 15:34:53,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:53,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 336 [2023-08-30 15:34:53,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:34:58,375 INFO L130 PetriNetUnfolder]: 47391/67898 cut-off events. [2023-08-30 15:34:58,375 INFO L131 PetriNetUnfolder]: For 56878/56943 co-relation queries the response was YES. [2023-08-30 15:34:58,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166641 conditions, 67898 events. 47391/67898 cut-off events. For 56878/56943 co-relation queries the response was YES. Maximal size of possible extension queue 6617. Compared 525016 event pairs, 33952 based on Foata normal form. 65/30952 useless extension candidates. Maximal degree in co-relation 166623. Up to 66858 conditions per place. [2023-08-30 15:34:58,702 INFO L137 encePairwiseOnDemand]: 327/336 looper letters, 91 selfloop transitions, 4 changer transitions 2/101 dead transitions. [2023-08-30 15:34:58,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 101 transitions, 627 flow [2023-08-30 15:34:58,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:34:58,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:34:58,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 749 transitions. [2023-08-30 15:34:58,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2023-08-30 15:34:58,704 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 749 transitions. [2023-08-30 15:34:58,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 749 transitions. [2023-08-30 15:34:58,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:34:58,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 749 transitions. [2023-08-30 15:34:58,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 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) [2023-08-30 15:34:58,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 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) [2023-08-30 15:34:58,709 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 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) [2023-08-30 15:34:58,709 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 344 flow. Second operand 5 states and 749 transitions. [2023-08-30 15:34:58,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 101 transitions, 627 flow [2023-08-30 15:34:58,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 101 transitions, 618 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 15:34:58,729 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 360 flow [2023-08-30 15:34:58,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=360, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2023-08-30 15:34:58,730 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2023-08-30 15:34:58,730 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 360 flow [2023-08-30 15:34:58,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.4) internal successors, (672), 5 states have internal predecessors, (672), 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) [2023-08-30 15:34:58,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:58,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:34:58,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 15:34:58,731 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:34:58,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:58,731 INFO L85 PathProgramCache]: Analyzing trace with hash -40520299, now seen corresponding path program 1 times [2023-08-30 15:34:58,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:58,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934440080] [2023-08-30 15:34:58,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:58,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:58,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:58,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:58,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934440080] [2023-08-30 15:34:58,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934440080] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:34:58,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607766424] [2023-08-30 15:34:58,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:58,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:58,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:34:59,001 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) [2023-08-30 15:34:59,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 15:34:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:59,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 15:34:59,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:34:59,163 INFO L350 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 11 treesize of output 7 [2023-08-30 15:34:59,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:34:59,197 INFO L350 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 18 [2023-08-30 15:34:59,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:34:59,248 INFO L350 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 18 [2023-08-30 15:34:59,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:59,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:34:59,315 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_328 (Array Int Int)) (v_ArrVal_327 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_327) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_328) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2023-08-30 15:34:59,338 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:34:59,338 INFO L350 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 [2023-08-30 15:34:59,348 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:34:59,348 INFO L350 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 73 treesize of output 69 [2023-08-30 15:34:59,354 INFO L350 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 26 [2023-08-30 15:34:59,362 INFO L350 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 54 treesize of output 50 [2023-08-30 15:34:59,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 15:34:59,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607766424] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:34:59,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:34:59,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-08-30 15:34:59,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891545699] [2023-08-30 15:34:59,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:34:59,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 15:34:59,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:59,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 15:34:59,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=159, Unknown=5, NotChecked=26, Total=240 [2023-08-30 15:34:59,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 336 [2023-08-30 15:34:59,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 360 flow. Second operand has 16 states, 16 states have (on average 113.25) internal successors, (1812), 16 states have internal predecessors, (1812), 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) [2023-08-30 15:34:59,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:59,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 336 [2023-08-30 15:34:59,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:06,156 INFO L130 PetriNetUnfolder]: 56027/75633 cut-off events. [2023-08-30 15:35:06,156 INFO L131 PetriNetUnfolder]: For 59599/59677 co-relation queries the response was YES. [2023-08-30 15:35:06,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202353 conditions, 75633 events. 56027/75633 cut-off events. For 59599/59677 co-relation queries the response was YES. Maximal size of possible extension queue 7412. Compared 545145 event pairs, 12440 based on Foata normal form. 118/34746 useless extension candidates. Maximal degree in co-relation 202332. Up to 50953 conditions per place. [2023-08-30 15:35:06,556 INFO L137 encePairwiseOnDemand]: 324/336 looper letters, 117 selfloop transitions, 29 changer transitions 1/150 dead transitions. [2023-08-30 15:35:06,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 150 transitions, 963 flow [2023-08-30 15:35:06,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:35:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:35:06,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1026 transitions. [2023-08-30 15:35:06,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38169642857142855 [2023-08-30 15:35:06,559 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1026 transitions. [2023-08-30 15:35:06,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1026 transitions. [2023-08-30 15:35:06,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:06,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1026 transitions. [2023-08-30 15:35:06,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.25) internal successors, (1026), 8 states have internal predecessors, (1026), 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) [2023-08-30 15:35:06,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 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) [2023-08-30 15:35:06,565 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 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) [2023-08-30 15:35:06,565 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 360 flow. Second operand 8 states and 1026 transitions. [2023-08-30 15:35:06,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 150 transitions, 963 flow [2023-08-30 15:35:06,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 150 transitions, 958 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:35:06,635 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 552 flow [2023-08-30 15:35:06,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=552, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2023-08-30 15:35:06,635 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 28 predicate places. [2023-08-30 15:35:06,636 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 552 flow [2023-08-30 15:35:06,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 113.25) internal successors, (1812), 16 states have internal predecessors, (1812), 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) [2023-08-30 15:35:06,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:06,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:35:06,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 15:35:06,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:06,838 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:35:06,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:06,838 INFO L85 PathProgramCache]: Analyzing trace with hash -40520016, now seen corresponding path program 1 times [2023-08-30 15:35:06,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:06,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505378084] [2023-08-30 15:35:06,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:06,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:06,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:06,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:06,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505378084] [2023-08-30 15:35:06,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505378084] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:35:06,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986001003] [2023-08-30 15:35:06,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:06,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:06,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:35:06,925 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) [2023-08-30 15:35:06,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 15:35:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:07,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:35:07,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:35:07,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:07,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:35:07,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:07,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986001003] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:35:07,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:35:07,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-30 15:35:07,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101236188] [2023-08-30 15:35:07,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:35:07,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 15:35:07,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:07,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 15:35:07,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-08-30 15:35:07,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 336 [2023-08-30 15:35:07,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 552 flow. Second operand has 14 states, 14 states have (on average 132.28571428571428) internal successors, (1852), 14 states have internal predecessors, (1852), 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) [2023-08-30 15:35:07,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:07,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 336 [2023-08-30 15:35:07,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:13,071 INFO L130 PetriNetUnfolder]: 48036/64983 cut-off events. [2023-08-30 15:35:13,071 INFO L131 PetriNetUnfolder]: For 85799/85882 co-relation queries the response was YES. [2023-08-30 15:35:13,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181321 conditions, 64983 events. 48036/64983 cut-off events. For 85799/85882 co-relation queries the response was YES. Maximal size of possible extension queue 6044. Compared 456636 event pairs, 21773 based on Foata normal form. 931/31168 useless extension candidates. Maximal degree in co-relation 181298. Up to 44645 conditions per place. [2023-08-30 15:35:13,411 INFO L137 encePairwiseOnDemand]: 324/336 looper letters, 245 selfloop transitions, 15 changer transitions 3/266 dead transitions. [2023-08-30 15:35:13,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 266 transitions, 1716 flow [2023-08-30 15:35:13,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:35:13,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:35:13,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1805 transitions. [2023-08-30 15:35:13,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476686507936508 [2023-08-30 15:35:13,415 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1805 transitions. [2023-08-30 15:35:13,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1805 transitions. [2023-08-30 15:35:13,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:13,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1805 transitions. [2023-08-30 15:35:13,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 150.41666666666666) internal successors, (1805), 12 states have internal predecessors, (1805), 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) [2023-08-30 15:35:13,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 336.0) internal successors, (4368), 13 states have internal predecessors, (4368), 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) [2023-08-30 15:35:13,424 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 336.0) internal successors, (4368), 13 states have internal predecessors, (4368), 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) [2023-08-30 15:35:13,424 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 552 flow. Second operand 12 states and 1805 transitions. [2023-08-30 15:35:13,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 266 transitions, 1716 flow [2023-08-30 15:35:13,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 266 transitions, 1665 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-08-30 15:35:13,528 INFO L231 Difference]: Finished difference. Result has 98 places, 88 transitions, 706 flow [2023-08-30 15:35:13,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=706, PETRI_PLACES=98, PETRI_TRANSITIONS=88} [2023-08-30 15:35:13,530 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2023-08-30 15:35:13,530 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 88 transitions, 706 flow [2023-08-30 15:35:13,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 132.28571428571428) internal successors, (1852), 14 states have internal predecessors, (1852), 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) [2023-08-30 15:35:13,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:13,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:35:13,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 15:35:13,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:13,737 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:35:13,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:13,737 INFO L85 PathProgramCache]: Analyzing trace with hash -40342668, now seen corresponding path program 1 times [2023-08-30 15:35:13,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:13,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553995516] [2023-08-30 15:35:13,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:13,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:13,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:13,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:13,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553995516] [2023-08-30 15:35:13,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553995516] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:35:13,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979341271] [2023-08-30 15:35:13,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:13,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:13,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:35:13,949 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) [2023-08-30 15:35:13,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 15:35:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:14,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 15:35:14,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:35:14,103 INFO L350 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 11 treesize of output 7 [2023-08-30 15:35:14,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:14,133 INFO L350 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 14 treesize of output 16 [2023-08-30 15:35:14,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:14,161 INFO L350 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 14 treesize of output 16 [2023-08-30 15:35:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:14,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:35:14,192 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_408 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_408) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2023-08-30 15:35:14,229 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:35:14,230 INFO L350 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 25 treesize of output 26 [2023-08-30 15:35:14,237 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:35:14,237 INFO L350 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 125 treesize of output 117 [2023-08-30 15:35:14,243 INFO L350 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 23 treesize of output 21 [2023-08-30 15:35:14,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-08-30 15:35:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:14,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979341271] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:35:14,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:35:14,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-30 15:35:14,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849464622] [2023-08-30 15:35:14,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:35:14,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 15:35:14,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:14,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 15:35:14,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=142, Unknown=2, NotChecked=24, Total=210 [2023-08-30 15:35:14,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 336 [2023-08-30 15:35:14,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 88 transitions, 706 flow. Second operand has 15 states, 15 states have (on average 113.26666666666667) internal successors, (1699), 15 states have internal predecessors, (1699), 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) [2023-08-30 15:35:14,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:14,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 336 [2023-08-30 15:35:14,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:20,242 INFO L130 PetriNetUnfolder]: 48483/64547 cut-off events. [2023-08-30 15:35:20,242 INFO L131 PetriNetUnfolder]: For 105612/105692 co-relation queries the response was YES. [2023-08-30 15:35:20,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190741 conditions, 64547 events. 48483/64547 cut-off events. For 105612/105692 co-relation queries the response was YES. Maximal size of possible extension queue 6053. Compared 441161 event pairs, 18031 based on Foata normal form. 124/29824 useless extension candidates. Maximal degree in co-relation 190712. Up to 44987 conditions per place. [2023-08-30 15:35:20,628 INFO L137 encePairwiseOnDemand]: 324/336 looper letters, 122 selfloop transitions, 35 changer transitions 1/161 dead transitions. [2023-08-30 15:35:20,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 161 transitions, 1240 flow [2023-08-30 15:35:20,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:35:20,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:35:20,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1025 transitions. [2023-08-30 15:35:20,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38132440476190477 [2023-08-30 15:35:20,631 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1025 transitions. [2023-08-30 15:35:20,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1025 transitions. [2023-08-30 15:35:20,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:20,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1025 transitions. [2023-08-30 15:35:20,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.125) internal successors, (1025), 8 states have internal predecessors, (1025), 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) [2023-08-30 15:35:20,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 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) [2023-08-30 15:35:20,638 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 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) [2023-08-30 15:35:20,638 INFO L175 Difference]: Start difference. First operand has 98 places, 88 transitions, 706 flow. Second operand 8 states and 1025 transitions. [2023-08-30 15:35:20,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 161 transitions, 1240 flow [2023-08-30 15:35:20,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 161 transitions, 1227 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-30 15:35:20,822 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 772 flow [2023-08-30 15:35:20,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=772, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2023-08-30 15:35:20,823 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 46 predicate places. [2023-08-30 15:35:20,823 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 772 flow [2023-08-30 15:35:20,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 113.26666666666667) internal successors, (1699), 15 states have internal predecessors, (1699), 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) [2023-08-30 15:35:20,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:20,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:35:20,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 15:35:21,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-30 15:35:21,025 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:35:21,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:21,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1250561779, now seen corresponding path program 1 times [2023-08-30 15:35:21,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:21,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964967426] [2023-08-30 15:35:21,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:21,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:21,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:21,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:21,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964967426] [2023-08-30 15:35:21,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964967426] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:35:21,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313815952] [2023-08-30 15:35:21,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:21,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:21,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:35:21,237 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) [2023-08-30 15:35:21,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 15:35:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:21,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 15:35:21,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:35:21,405 INFO L350 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 11 treesize of output 7 [2023-08-30 15:35:21,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:21,437 INFO L350 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 18 [2023-08-30 15:35:21,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:21,461 INFO L350 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 18 [2023-08-30 15:35:21,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:21,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:35:21,499 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_452 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_452) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2023-08-30 15:35:21,532 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:35:21,532 INFO L350 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 [2023-08-30 15:35:21,539 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:35:21,539 INFO L350 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 73 treesize of output 69 [2023-08-30 15:35:21,543 INFO L350 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 56 treesize of output 52 [2023-08-30 15:35:21,549 INFO L350 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 26 treesize of output 24 [2023-08-30 15:35:21,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:21,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313815952] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:35:21,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:35:21,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-30 15:35:21,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315749379] [2023-08-30 15:35:21,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:35:21,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 15:35:21,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:21,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 15:35:21,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=142, Unknown=2, NotChecked=24, Total=210 [2023-08-30 15:35:21,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 336 [2023-08-30 15:35:21,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 772 flow. Second operand has 15 states, 15 states have (on average 113.4) internal successors, (1701), 15 states have internal predecessors, (1701), 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) [2023-08-30 15:35:21,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:21,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 336 [2023-08-30 15:35:21,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:29,297 INFO L130 PetriNetUnfolder]: 57546/82923 cut-off events. [2023-08-30 15:35:29,297 INFO L131 PetriNetUnfolder]: For 188954/189235 co-relation queries the response was YES. [2023-08-30 15:35:29,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248020 conditions, 82923 events. 57546/82923 cut-off events. For 188954/189235 co-relation queries the response was YES. Maximal size of possible extension queue 8435. Compared 682599 event pairs, 16868 based on Foata normal form. 278/41079 useless extension candidates. Maximal degree in co-relation 247990. Up to 48298 conditions per place. [2023-08-30 15:35:29,826 INFO L137 encePairwiseOnDemand]: 323/336 looper letters, 146 selfloop transitions, 40 changer transitions 1/195 dead transitions. [2023-08-30 15:35:29,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 195 transitions, 1901 flow [2023-08-30 15:35:29,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:35:29,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:35:29,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1029 transitions. [2023-08-30 15:35:29,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2023-08-30 15:35:29,829 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1029 transitions. [2023-08-30 15:35:29,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1029 transitions. [2023-08-30 15:35:29,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:29,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1029 transitions. [2023-08-30 15:35:29,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.625) internal successors, (1029), 8 states have internal predecessors, (1029), 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) [2023-08-30 15:35:29,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 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) [2023-08-30 15:35:29,835 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 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) [2023-08-30 15:35:29,835 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 772 flow. Second operand 8 states and 1029 transitions. [2023-08-30 15:35:29,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 195 transitions, 1901 flow [2023-08-30 15:35:30,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 195 transitions, 1857 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-30 15:35:30,182 INFO L231 Difference]: Finished difference. Result has 108 places, 117 transitions, 1059 flow [2023-08-30 15:35:30,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1059, PETRI_PLACES=108, PETRI_TRANSITIONS=117} [2023-08-30 15:35:30,182 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 52 predicate places. [2023-08-30 15:35:30,183 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 117 transitions, 1059 flow [2023-08-30 15:35:30,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 113.4) internal successors, (1701), 15 states have internal predecessors, (1701), 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) [2023-08-30 15:35:30,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:30,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:35:30,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 15:35:30,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 15:35:30,391 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:35:30,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:30,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1250561778, now seen corresponding path program 1 times [2023-08-30 15:35:30,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:30,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496256559] [2023-08-30 15:35:30,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:30,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:30,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:30,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496256559] [2023-08-30 15:35:30,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496256559] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:35:30,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293038492] [2023-08-30 15:35:30,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:30,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:30,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:35:30,616 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) [2023-08-30 15:35:30,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 15:35:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:30,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 15:35:30,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:35:30,791 INFO L350 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 11 treesize of output 7 [2023-08-30 15:35:30,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:30,821 INFO L350 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 14 treesize of output 16 [2023-08-30 15:35:30,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:30,845 INFO L350 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 14 treesize of output 16 [2023-08-30 15:35:30,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:30,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:35:30,875 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_496 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_496) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2023-08-30 15:35:32,956 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:35:32,956 INFO L350 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 25 treesize of output 26 [2023-08-30 15:35:32,963 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:35:32,963 INFO L350 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 125 treesize of output 117 [2023-08-30 15:35:32,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-08-30 15:35:32,975 INFO L350 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 23 treesize of output 21 [2023-08-30 15:35:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:33,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293038492] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:35:33,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:35:33,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-30 15:35:33,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905729209] [2023-08-30 15:35:33,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:35:33,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 15:35:33,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:33,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 15:35:33,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=4, NotChecked=24, Total=210 [2023-08-30 15:35:33,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 336 [2023-08-30 15:35:33,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 117 transitions, 1059 flow. Second operand has 15 states, 15 states have (on average 113.4) internal successors, (1701), 15 states have internal predecessors, (1701), 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) [2023-08-30 15:35:33,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:33,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 336 [2023-08-30 15:35:33,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:41,392 INFO L130 PetriNetUnfolder]: 59726/86555 cut-off events. [2023-08-30 15:35:41,392 INFO L131 PetriNetUnfolder]: For 212223/212490 co-relation queries the response was YES. [2023-08-30 15:35:41,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278683 conditions, 86555 events. 59726/86555 cut-off events. For 212223/212490 co-relation queries the response was YES. Maximal size of possible extension queue 8543. Compared 725251 event pairs, 20262 based on Foata normal form. 264/47471 useless extension candidates. Maximal degree in co-relation 278650. Up to 52001 conditions per place. [2023-08-30 15:35:41,971 INFO L137 encePairwiseOnDemand]: 325/336 looper letters, 145 selfloop transitions, 56 changer transitions 1/210 dead transitions. [2023-08-30 15:35:41,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 210 transitions, 2198 flow [2023-08-30 15:35:41,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:35:41,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:35:41,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1026 transitions. [2023-08-30 15:35:41,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38169642857142855 [2023-08-30 15:35:41,974 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1026 transitions. [2023-08-30 15:35:41,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1026 transitions. [2023-08-30 15:35:41,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:41,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1026 transitions. [2023-08-30 15:35:41,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.25) internal successors, (1026), 8 states have internal predecessors, (1026), 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) [2023-08-30 15:35:41,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 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) [2023-08-30 15:35:41,980 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 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) [2023-08-30 15:35:41,980 INFO L175 Difference]: Start difference. First operand has 108 places, 117 transitions, 1059 flow. Second operand 8 states and 1026 transitions. [2023-08-30 15:35:41,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 210 transitions, 2198 flow [2023-08-30 15:35:42,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 210 transitions, 2185 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 15:35:42,624 INFO L231 Difference]: Finished difference. Result has 113 places, 133 transitions, 1340 flow [2023-08-30 15:35:42,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1340, PETRI_PLACES=113, PETRI_TRANSITIONS=133} [2023-08-30 15:35:42,624 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 57 predicate places. [2023-08-30 15:35:42,625 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 133 transitions, 1340 flow [2023-08-30 15:35:42,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 113.4) internal successors, (1701), 15 states have internal predecessors, (1701), 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) [2023-08-30 15:35:42,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:42,625 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 15:35:42,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 15:35:42,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 15:35:42,826 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:35:42,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:42,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1088169299, now seen corresponding path program 1 times [2023-08-30 15:35:42,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:42,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833707371] [2023-08-30 15:35:42,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:42,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:42,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:35:42,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:42,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833707371] [2023-08-30 15:35:42,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833707371] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:35:42,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:35:42,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:35:42,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845029611] [2023-08-30 15:35:42,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:35:42,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:35:42,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:42,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:35:42,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:35:42,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 336 [2023-08-30 15:35:42,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 133 transitions, 1340 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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) [2023-08-30 15:35:42,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:42,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 336 [2023-08-30 15:35:42,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:50,447 INFO L130 PetriNetUnfolder]: 53455/77962 cut-off events. [2023-08-30 15:35:50,447 INFO L131 PetriNetUnfolder]: For 220168/220444 co-relation queries the response was YES. [2023-08-30 15:35:50,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255078 conditions, 77962 events. 53455/77962 cut-off events. For 220168/220444 co-relation queries the response was YES. Maximal size of possible extension queue 7700. Compared 645058 event pairs, 35339 based on Foata normal form. 272/44483 useless extension candidates. Maximal degree in co-relation 255044. Up to 77579 conditions per place. [2023-08-30 15:35:51,052 INFO L137 encePairwiseOnDemand]: 334/336 looper letters, 118 selfloop transitions, 1 changer transitions 0/130 dead transitions. [2023-08-30 15:35:51,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 130 transitions, 1523 flow [2023-08-30 15:35:51,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:35:51,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:35:51,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-08-30 15:35:51,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-08-30 15:35:51,054 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-08-30 15:35:51,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-08-30 15:35:51,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:51,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-08-30 15:35:51,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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) [2023-08-30 15:35:51,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 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) [2023-08-30 15:35:51,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 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) [2023-08-30 15:35:51,056 INFO L175 Difference]: Start difference. First operand has 113 places, 133 transitions, 1340 flow. Second operand 3 states and 462 transitions. [2023-08-30 15:35:51,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 130 transitions, 1523 flow [2023-08-30 15:35:51,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 130 transitions, 1506 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 15:35:51,633 INFO L231 Difference]: Finished difference. Result has 111 places, 130 transitions, 1270 flow [2023-08-30 15:35:51,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1270, PETRI_PLACES=111, PETRI_TRANSITIONS=130} [2023-08-30 15:35:51,638 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 55 predicate places. [2023-08-30 15:35:51,638 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 130 transitions, 1270 flow [2023-08-30 15:35:51,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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) [2023-08-30 15:35:51,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:51,638 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 15:35:51,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 15:35:51,639 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:35:51,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:51,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1088169298, now seen corresponding path program 2 times [2023-08-30 15:35:51,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:51,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671036768] [2023-08-30 15:35:51,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:51,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:51,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:35:51,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:51,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671036768] [2023-08-30 15:35:51,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671036768] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:35:51,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:35:51,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:35:51,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070515044] [2023-08-30 15:35:51,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:35:51,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:35:51,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:51,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:35:51,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:35:51,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 336 [2023-08-30 15:35:51,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 130 transitions, 1270 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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) [2023-08-30 15:35:51,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:51,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 336 [2023-08-30 15:35:51,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:58,628 INFO L130 PetriNetUnfolder]: 48814/71023 cut-off events. [2023-08-30 15:35:58,629 INFO L131 PetriNetUnfolder]: For 215896/216172 co-relation queries the response was YES. [2023-08-30 15:35:58,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229757 conditions, 71023 events. 48814/71023 cut-off events. For 215896/216172 co-relation queries the response was YES. Maximal size of possible extension queue 6595. Compared 575739 event pairs, 32168 based on Foata normal form. 272/41558 useless extension candidates. Maximal degree in co-relation 229722. Up to 70679 conditions per place. [2023-08-30 15:35:59,182 INFO L137 encePairwiseOnDemand]: 334/336 looper letters, 115 selfloop transitions, 1 changer transitions 0/127 dead transitions. [2023-08-30 15:35:59,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 127 transitions, 1447 flow [2023-08-30 15:35:59,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:35:59,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:35:59,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2023-08-30 15:35:59,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573412698412698 [2023-08-30 15:35:59,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2023-08-30 15:35:59,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2023-08-30 15:35:59,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:59,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2023-08-30 15:35:59,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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) [2023-08-30 15:35:59,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 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) [2023-08-30 15:35:59,187 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 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) [2023-08-30 15:35:59,187 INFO L175 Difference]: Start difference. First operand has 111 places, 130 transitions, 1270 flow. Second operand 3 states and 461 transitions. [2023-08-30 15:35:59,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 127 transitions, 1447 flow [2023-08-30 15:35:59,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 127 transitions, 1446 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:35:59,645 INFO L231 Difference]: Finished difference. Result has 111 places, 127 transitions, 1216 flow [2023-08-30 15:35:59,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1216, PETRI_PLACES=111, PETRI_TRANSITIONS=127} [2023-08-30 15:35:59,645 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 55 predicate places. [2023-08-30 15:35:59,645 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 127 transitions, 1216 flow [2023-08-30 15:35:59,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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) [2023-08-30 15:35:59,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:59,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:35:59,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 15:35:59,646 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:35:59,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:59,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1250561782, now seen corresponding path program 1 times [2023-08-30 15:35:59,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:59,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029040441] [2023-08-30 15:35:59,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:59,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:35:59,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:59,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029040441] [2023-08-30 15:35:59,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029040441] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:35:59,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:35:59,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:35:59,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586349418] [2023-08-30 15:35:59,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:35:59,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:35:59,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:59,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:35:59,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:35:59,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 336 [2023-08-30 15:35:59,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 127 transitions, 1216 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:59,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:59,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 336 [2023-08-30 15:35:59,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand