./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.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-queue-add-3.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 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 --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 15:47:50,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:47:50,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:47:50,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:47:50,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:47:50,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:47:50,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:47:50,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:47:50,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:47:50,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:47:50,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:47:50,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:47:50,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:47:50,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:47:50,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:47:50,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:47:50,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:47:50,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:47:50,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:47:50,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:47:50,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:47:50,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:47:50,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:47:50,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:47:50,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:47:50,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:47:50,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:47:50,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:47:50,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:47:50,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:47:50,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:47:50,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:47:50,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:47:50,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:47:50,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:47:50,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:47:50,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:47:50,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:47:50,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:47:50,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:47:50,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:47:50,613 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:47:50,633 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:47:50,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:47:50,634 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:47:50,634 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:47:50,635 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:47:50,635 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:47:50,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:47:50,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:47:50,636 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:47:50,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:47:50,637 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:47:50,637 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:47:50,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:47:50,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:47:50,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:47:50,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:47:50,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:47:50,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:47:50,638 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:47:50,639 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:47:50,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:47:50,639 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:47:50,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:47:50,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:47:50,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:47:50,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:47:50,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:47:50,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:47:50,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:47:50,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:47:50,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:47:50,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:47:50,642 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:47:50,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:47:50,642 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:47:50,642 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:47:50,643 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:47:50,643 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:47:50,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:47:51,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:47:51,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:47:51,009 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:47:51,010 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:47:51,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2023-08-30 15:47:52,221 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:47:52,424 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:47:52,425 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2023-08-30 15:47:52,434 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3cd0deb1/87991ccdbbdc41428954afa816d00a95/FLAG5c0ed2c00 [2023-08-30 15:47:52,447 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3cd0deb1/87991ccdbbdc41428954afa816d00a95 [2023-08-30 15:47:52,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:47:52,451 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:47:52,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:47:52,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:47:52,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:47:52,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:47:52" (1/1) ... [2023-08-30 15:47:52,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f4a3aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:47:52, skipping insertion in model container [2023-08-30 15:47:52,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:47:52" (1/1) ... [2023-08-30 15:47:52,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:47:52,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:47:52,700 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-queue-add-3.wvr.c[3412,3425] [2023-08-30 15:47:52,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:47:52,722 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:47:52,762 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-queue-add-3.wvr.c[3412,3425] [2023-08-30 15:47:52,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:47:52,785 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:47:52,785 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:47:52,791 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:47:52,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:47:52 WrapperNode [2023-08-30 15:47:52,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:47:52,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:47:52,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:47:52,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:47:52,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:47:52" (1/1) ... [2023-08-30 15:47:52,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:47:52" (1/1) ... [2023-08-30 15:47:52,859 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 272 [2023-08-30 15:47:52,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:47:52,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:47:52,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:47:52,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:47:52,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:47:52" (1/1) ... [2023-08-30 15:47:52,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:47:52" (1/1) ... [2023-08-30 15:47:52,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:47:52" (1/1) ... [2023-08-30 15:47:52,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:47:52" (1/1) ... [2023-08-30 15:47:52,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:47:52" (1/1) ... [2023-08-30 15:47:52,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:47:52" (1/1) ... [2023-08-30 15:47:52,907 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:47:52" (1/1) ... [2023-08-30 15:47:52,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:47:52" (1/1) ... [2023-08-30 15:47:52,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:47:52,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:47:52,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:47:52,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:47:52,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:47:52" (1/1) ... [2023-08-30 15:47:52,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:47:52,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:47:52,950 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 15:47:52,955 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 15:47:52,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:47:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:47:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:47:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:47:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:47:52,983 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:47:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:47:52,984 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:47:52,984 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:47:52,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:47:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:47:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:47:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:47:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:47:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:47:52,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:47:52,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:47:52,988 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 15:47:53,081 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:47:53,082 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:47:53,538 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:47:53,707 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:47:53,707 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-30 15:47:53,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:47:53 BoogieIcfgContainer [2023-08-30 15:47:53,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:47:53,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:47:53,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:47:53,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:47:53,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:47:52" (1/3) ... [2023-08-30 15:47:53,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17294863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:47:53, skipping insertion in model container [2023-08-30 15:47:53,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:47:52" (2/3) ... [2023-08-30 15:47:53,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17294863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:47:53, skipping insertion in model container [2023-08-30 15:47:53,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:47:53" (3/3) ... [2023-08-30 15:47:53,719 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2023-08-30 15:47:53,727 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:47:53,735 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:47:53,735 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-08-30 15:47:53,736 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:47:53,831 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:47:53,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 229 transitions, 482 flow [2023-08-30 15:47:53,977 INFO L130 PetriNetUnfolder]: 18/226 cut-off events. [2023-08-30 15:47:53,977 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:47:53,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 226 events. 18/226 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 227 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 186. Up to 3 conditions per place. [2023-08-30 15:47:53,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 229 transitions, 482 flow [2023-08-30 15:47:54,009 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 208 transitions, 431 flow [2023-08-30 15:47:54,013 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:47:54,025 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 208 transitions, 431 flow [2023-08-30 15:47:54,028 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 208 transitions, 431 flow [2023-08-30 15:47:54,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 208 transitions, 431 flow [2023-08-30 15:47:54,085 INFO L130 PetriNetUnfolder]: 17/208 cut-off events. [2023-08-30 15:47:54,086 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:47:54,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 208 events. 17/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 225 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 186. Up to 3 conditions per place. [2023-08-30 15:47:54,090 INFO L119 LiptonReduction]: Number of co-enabled transitions 3252 [2023-08-30 15:48:02,020 INFO L134 LiptonReduction]: Checked pairs total: 6101 [2023-08-30 15:48:02,020 INFO L136 LiptonReduction]: Total number of compositions: 218 [2023-08-30 15:48:02,031 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:48:02,036 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;@7fc9b5dc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:48:02,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-08-30 15:48:02,039 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:48:02,039 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:48:02,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:48:02,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:48:02,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:48:02,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:48:02,044 INFO L85 PathProgramCache]: Analyzing trace with hash 33767, now seen corresponding path program 1 times [2023-08-30 15:48:02,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:48:02,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645940879] [2023-08-30 15:48:02,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:02,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:48:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:02,392 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 15:48:02,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:48:02,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645940879] [2023-08-30 15:48:02,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645940879] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:48:02,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:48:02,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:48:02,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971985444] [2023-08-30 15:48:02,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:48:02,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:48:02,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:48:02,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:48:02,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:48:02,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 447 [2023-08-30 15:48:02,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 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 15:48:02,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:48:02,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 447 [2023-08-30 15:48:02,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:48:03,429 INFO L130 PetriNetUnfolder]: 6213/8035 cut-off events. [2023-08-30 15:48:03,430 INFO L131 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2023-08-30 15:48:03,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16382 conditions, 8035 events. 6213/8035 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 38906 event pairs, 3335 based on Foata normal form. 0/2647 useless extension candidates. Maximal degree in co-relation 7334. Up to 3991 conditions per place. [2023-08-30 15:48:03,481 INFO L137 encePairwiseOnDemand]: 433/447 looper letters, 65 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2023-08-30 15:48:03,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 312 flow [2023-08-30 15:48:03,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:48:03,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:48:03,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 649 transitions. [2023-08-30 15:48:03,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48396718866517524 [2023-08-30 15:48:03,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 649 transitions. [2023-08-30 15:48:03,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 649 transitions. [2023-08-30 15:48:03,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:48:03,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 649 transitions. [2023-08-30 15:48:03,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 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 15:48:03,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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 15:48:03,520 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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 15:48:03,521 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 107 flow. Second operand 3 states and 649 transitions. [2023-08-30 15:48:03,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 312 flow [2023-08-30 15:48:03,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 72 transitions, 294 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:48:03,532 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 122 flow [2023-08-30 15:48:03,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-08-30 15:48:03,540 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -6 predicate places. [2023-08-30 15:48:03,542 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 122 flow [2023-08-30 15:48:03,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 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 15:48:03,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:48:03,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:48:03,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:48:03,544 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:48:03,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:48:03,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1047808, now seen corresponding path program 1 times [2023-08-30 15:48:03,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:48:03,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116895041] [2023-08-30 15:48:03,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:03,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:48:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:03,660 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 15:48:03,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:48:03,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116895041] [2023-08-30 15:48:03,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116895041] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:48:03,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148264832] [2023-08-30 15:48:03,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:03,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:48:03,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:48:03,665 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 15:48:03,680 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 15:48:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:03,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:48:03,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:48:03,797 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 15:48:03,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:48:03,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148264832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:48:03,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:48:03,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 15:48:03,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611217326] [2023-08-30 15:48:03,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:48:03,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:48:03,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:48:03,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:48:03,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:48:03,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 447 [2023-08-30 15:48:03,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 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 15:48:03,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:48:03,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 447 [2023-08-30 15:48:03,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:48:04,764 INFO L130 PetriNetUnfolder]: 6213/8033 cut-off events. [2023-08-30 15:48:04,766 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 15:48:04,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16266 conditions, 8033 events. 6213/8033 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 38847 event pairs, 3335 based on Foata normal form. 0/2651 useless extension candidates. Maximal degree in co-relation 8127. Up to 3991 conditions per place. [2023-08-30 15:48:04,820 INFO L137 encePairwiseOnDemand]: 441/447 looper letters, 63 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2023-08-30 15:48:04,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 70 transitions, 312 flow [2023-08-30 15:48:04,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:48:04,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:48:04,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 821 transitions. [2023-08-30 15:48:04,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45917225950782997 [2023-08-30 15:48:04,824 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 821 transitions. [2023-08-30 15:48:04,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 821 transitions. [2023-08-30 15:48:04,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:48:04,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 821 transitions. [2023-08-30 15:48:04,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 205.25) internal successors, (821), 4 states have internal predecessors, (821), 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 15:48:04,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 447.0) internal successors, (2235), 5 states have internal predecessors, (2235), 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 15:48:04,832 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 447.0) internal successors, (2235), 5 states have internal predecessors, (2235), 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 15:48:04,832 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 122 flow. Second operand 4 states and 821 transitions. [2023-08-30 15:48:04,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 70 transitions, 312 flow [2023-08-30 15:48:04,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 70 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:48:04,836 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 114 flow [2023-08-30 15:48:04,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-08-30 15:48:04,837 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -7 predicate places. [2023-08-30 15:48:04,837 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 114 flow [2023-08-30 15:48:04,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 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 15:48:04,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:48:04,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:48:04,847 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 15:48:05,044 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 15:48:05,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:48:05,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:48:05,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1047810, now seen corresponding path program 1 times [2023-08-30 15:48:05,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:48:05,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986109770] [2023-08-30 15:48:05,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:05,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:48:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:05,152 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 15:48:05,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:48:05,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986109770] [2023-08-30 15:48:05,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986109770] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:48:05,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717164700] [2023-08-30 15:48:05,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:05,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:48:05,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:48:05,155 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 15:48:05,161 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 15:48:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:05,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:48:05,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:48:05,242 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 15:48:05,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:48:05,273 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 15:48:05,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717164700] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:48:05,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:48:05,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:48:05,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685881490] [2023-08-30 15:48:05,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:48:05,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:48:05,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:48:05,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:48:05,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:48:05,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 447 [2023-08-30 15:48:05,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 114 flow. Second operand has 7 states, 7 states have (on average 189.14285714285714) internal successors, (1324), 7 states have internal predecessors, (1324), 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 15:48:05,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:48:05,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 447 [2023-08-30 15:48:05,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:48:07,443 INFO L130 PetriNetUnfolder]: 15519/20066 cut-off events. [2023-08-30 15:48:07,443 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-08-30 15:48:07,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40617 conditions, 20066 events. 15519/20066 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 1442. Compared 108010 event pairs, 8336 based on Foata normal form. 0/6677 useless extension candidates. Maximal degree in co-relation 32443. Up to 3994 conditions per place. [2023-08-30 15:48:07,560 INFO L137 encePairwiseOnDemand]: 441/447 looper letters, 150 selfloop transitions, 13 changer transitions 0/166 dead transitions. [2023-08-30 15:48:07,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 166 transitions, 738 flow [2023-08-30 15:48:07,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:48:07,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:48:07,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1297 transitions. [2023-08-30 15:48:07,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835943325876212 [2023-08-30 15:48:07,565 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1297 transitions. [2023-08-30 15:48:07,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1297 transitions. [2023-08-30 15:48:07,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:48:07,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1297 transitions. [2023-08-30 15:48:07,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 216.16666666666666) internal successors, (1297), 6 states have internal predecessors, (1297), 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 15:48:07,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 447.0) internal successors, (3129), 7 states have internal predecessors, (3129), 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 15:48:07,575 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 447.0) internal successors, (3129), 7 states have internal predecessors, (3129), 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 15:48:07,575 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 114 flow. Second operand 6 states and 1297 transitions. [2023-08-30 15:48:07,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 166 transitions, 738 flow [2023-08-30 15:48:07,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 166 transitions, 730 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:48:07,579 INFO L231 Difference]: Finished difference. Result has 49 places, 50 transitions, 205 flow [2023-08-30 15:48:07,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=49, PETRI_TRANSITIONS=50} [2023-08-30 15:48:07,580 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-08-30 15:48:07,580 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 50 transitions, 205 flow [2023-08-30 15:48:07,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 189.14285714285714) internal successors, (1324), 7 states have internal predecessors, (1324), 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 15:48:07,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:48:07,581 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:48:07,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 15:48:07,787 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 15:48:07,787 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:48:07,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:48:07,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1151500841, now seen corresponding path program 2 times [2023-08-30 15:48:07,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:48:07,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72475843] [2023-08-30 15:48:07,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:07,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:48:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:07,985 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 15:48:07,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:48:07,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72475843] [2023-08-30 15:48:07,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72475843] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:48:07,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326736973] [2023-08-30 15:48:07,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:48:07,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:48:07,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:48:07,988 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 15:48:07,990 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 15:48:08,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:48:08,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:48:08,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:48:08,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:48:08,077 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 15:48:08,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:48:08,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326736973] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:48:08,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:48:08,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:48:08,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303706305] [2023-08-30 15:48:08,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:48:08,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:48:08,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:48:08,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:48:08,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:48:08,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 447 [2023-08-30 15:48:08,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 50 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 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 15:48:08,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:48:08,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 447 [2023-08-30 15:48:08,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:48:09,779 INFO L130 PetriNetUnfolder]: 15551/20097 cut-off events. [2023-08-30 15:48:09,779 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2023-08-30 15:48:09,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40707 conditions, 20097 events. 15551/20097 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 1550. Compared 108843 event pairs, 8340 based on Foata normal form. 1/6543 useless extension candidates. Maximal degree in co-relation 32521. Up to 19952 conditions per place. [2023-08-30 15:48:09,879 INFO L137 encePairwiseOnDemand]: 444/447 looper letters, 40 selfloop transitions, 6 changer transitions 0/49 dead transitions. [2023-08-30 15:48:09,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 287 flow [2023-08-30 15:48:09,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:48:09,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:48:09,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions. [2023-08-30 15:48:09,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511558538404176 [2023-08-30 15:48:09,882 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions. [2023-08-30 15:48:09,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions. [2023-08-30 15:48:09,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:48:09,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions. [2023-08-30 15:48:09,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 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 15:48:09,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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 15:48:09,888 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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 15:48:09,888 INFO L175 Difference]: Start difference. First operand has 49 places, 50 transitions, 205 flow. Second operand 3 states and 605 transitions. [2023-08-30 15:48:09,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 287 flow [2023-08-30 15:48:09,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 268 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 15:48:09,892 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 188 flow [2023-08-30 15:48:09,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2023-08-30 15:48:09,894 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-08-30 15:48:09,894 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 188 flow [2023-08-30 15:48:09,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 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 15:48:09,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:48:09,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:48:09,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 15:48:10,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:48:10,101 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:48:10,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:48:10,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1173794815, now seen corresponding path program 1 times [2023-08-30 15:48:10,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:48:10,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071783057] [2023-08-30 15:48:10,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:10,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:48:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:10,176 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 15:48:10,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:48:10,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071783057] [2023-08-30 15:48:10,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071783057] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:48:10,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:48:10,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:48:10,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421728234] [2023-08-30 15:48:10,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:48:10,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:48:10,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:48:10,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:48:10,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:48:10,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 447 [2023-08-30 15:48:10,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 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 15:48:10,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:48:10,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 447 [2023-08-30 15:48:10,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:48:12,238 INFO L130 PetriNetUnfolder]: 21321/28687 cut-off events. [2023-08-30 15:48:12,238 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-08-30 15:48:12,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58248 conditions, 28687 events. 21321/28687 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 2372. Compared 180669 event pairs, 8425 based on Foata normal form. 0/10837 useless extension candidates. Maximal degree in co-relation 58192. Up to 17293 conditions per place. [2023-08-30 15:48:12,374 INFO L137 encePairwiseOnDemand]: 443/447 looper letters, 70 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-30 15:48:12,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 74 transitions, 387 flow [2023-08-30 15:48:12,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:48:12,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:48:12,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2023-08-30 15:48:12,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47576435495898584 [2023-08-30 15:48:12,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2023-08-30 15:48:12,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2023-08-30 15:48:12,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:48:12,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2023-08-30 15:48:12,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 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 15:48:12,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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 15:48:12,382 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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 15:48:12,383 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 188 flow. Second operand 3 states and 638 transitions. [2023-08-30 15:48:12,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 74 transitions, 387 flow [2023-08-30 15:48:12,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 74 transitions, 375 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:48:12,385 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 190 flow [2023-08-30 15:48:12,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2023-08-30 15:48:12,386 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2023-08-30 15:48:12,386 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 190 flow [2023-08-30 15:48:12,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 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 15:48:12,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:48:12,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:48:12,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:48:12,387 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:48:12,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:48:12,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1173794818, now seen corresponding path program 1 times [2023-08-30 15:48:12,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:48:12,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722292491] [2023-08-30 15:48:12,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:12,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:48:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:12,489 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 15:48:12,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:48:12,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722292491] [2023-08-30 15:48:12,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722292491] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:48:12,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:48:12,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:48:12,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605950322] [2023-08-30 15:48:12,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:48:12,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:48:12,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:48:12,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:48:12,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:48:12,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 447 [2023-08-30 15:48:12,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 185.25) internal successors, (741), 4 states have internal predecessors, (741), 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 15:48:12,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:48:12,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 447 [2023-08-30 15:48:12,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:48:14,147 INFO L130 PetriNetUnfolder]: 19161/26063 cut-off events. [2023-08-30 15:48:14,147 INFO L131 PetriNetUnfolder]: For 1259/1874 co-relation queries the response was YES. [2023-08-30 15:48:14,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55610 conditions, 26063 events. 19161/26063 cut-off events. For 1259/1874 co-relation queries the response was YES. Maximal size of possible extension queue 2172. Compared 163863 event pairs, 12675 based on Foata normal form. 830/11663 useless extension candidates. Maximal degree in co-relation 44186. Up to 25716 conditions per place. [2023-08-30 15:48:14,328 INFO L137 encePairwiseOnDemand]: 437/447 looper letters, 71 selfloop transitions, 4 changer transitions 2/80 dead transitions. [2023-08-30 15:48:14,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 440 flow [2023-08-30 15:48:14,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:48:14,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:48:14,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 995 transitions. [2023-08-30 15:48:14,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451901565995526 [2023-08-30 15:48:14,332 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 995 transitions. [2023-08-30 15:48:14,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 995 transitions. [2023-08-30 15:48:14,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:48:14,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 995 transitions. [2023-08-30 15:48:14,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 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 15:48:14,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 447.0) internal successors, (2682), 6 states have internal predecessors, (2682), 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 15:48:14,341 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 447.0) internal successors, (2682), 6 states have internal predecessors, (2682), 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 15:48:14,341 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 190 flow. Second operand 5 states and 995 transitions. [2023-08-30 15:48:14,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 440 flow [2023-08-30 15:48:14,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 438 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:48:14,346 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 232 flow [2023-08-30 15:48:14,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2023-08-30 15:48:14,347 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 5 predicate places. [2023-08-30 15:48:14,347 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 232 flow [2023-08-30 15:48:14,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 185.25) internal successors, (741), 4 states have internal predecessors, (741), 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 15:48:14,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:48:14,348 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 15:48:14,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 15:48:14,349 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:48:14,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:48:14,349 INFO L85 PathProgramCache]: Analyzing trace with hash 2037248566, now seen corresponding path program 1 times [2023-08-30 15:48:14,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:48:14,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644920900] [2023-08-30 15:48:14,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:14,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:48:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:14,439 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 15:48:14,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:48:14,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644920900] [2023-08-30 15:48:14,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644920900] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:48:14,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192807760] [2023-08-30 15:48:14,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:14,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:48:14,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:48:14,442 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 15:48:14,445 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 15:48:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:14,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:48:14,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:48:14,554 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 15:48:14,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:48:14,606 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 15:48:14,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192807760] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:48:14,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:48:14,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 15:48:14,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826154041] [2023-08-30 15:48:14,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:48:14,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:48:14,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:48:14,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:48:14,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:48:14,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 447 [2023-08-30 15:48:14,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 232 flow. Second operand has 13 states, 13 states have (on average 189.15384615384616) internal successors, (2459), 13 states have internal predecessors, (2459), 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 15:48:14,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:48:14,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 447 [2023-08-30 15:48:14,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:48:19,072 INFO L130 PetriNetUnfolder]: 42219/57401 cut-off events. [2023-08-30 15:48:19,072 INFO L131 PetriNetUnfolder]: For 23892/25269 co-relation queries the response was YES. [2023-08-30 15:48:19,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151981 conditions, 57401 events. 42219/57401 cut-off events. For 23892/25269 co-relation queries the response was YES. Maximal size of possible extension queue 2544. Compared 375398 event pairs, 27918 based on Foata normal form. 1365/25224 useless extension candidates. Maximal degree in co-relation 151243. Up to 15359 conditions per place. [2023-08-30 15:48:19,428 INFO L137 encePairwiseOnDemand]: 442/447 looper letters, 334 selfloop transitions, 32 changer transitions 0/369 dead transitions. [2023-08-30 15:48:19,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 369 transitions, 2052 flow [2023-08-30 15:48:19,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:48:19,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:48:19,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2616 transitions. [2023-08-30 15:48:19,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48769574944071586 [2023-08-30 15:48:19,436 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2616 transitions. [2023-08-30 15:48:19,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2616 transitions. [2023-08-30 15:48:19,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:48:19,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2616 transitions. [2023-08-30 15:48:19,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 218.0) internal successors, (2616), 12 states have internal predecessors, (2616), 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 15:48:19,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 447.0) internal successors, (5811), 13 states have internal predecessors, (5811), 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 15:48:19,454 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 447.0) internal successors, (5811), 13 states have internal predecessors, (5811), 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 15:48:19,454 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 232 flow. Second operand 12 states and 2616 transitions. [2023-08-30 15:48:19,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 369 transitions, 2052 flow [2023-08-30 15:48:19,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 369 transitions, 2046 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 15:48:19,462 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 444 flow [2023-08-30 15:48:19,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=444, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2023-08-30 15:48:19,463 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 21 predicate places. [2023-08-30 15:48:19,463 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 444 flow [2023-08-30 15:48:19,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 189.15384615384616) internal successors, (2459), 13 states have internal predecessors, (2459), 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 15:48:19,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:48:19,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:48:19,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 15:48:19,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:48:19,670 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:48:19,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:48:19,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1359082651, now seen corresponding path program 1 times [2023-08-30 15:48:19,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:48:19,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449545163] [2023-08-30 15:48:19,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:19,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:48:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:19,796 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 15:48:19,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:48:19,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449545163] [2023-08-30 15:48:19,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449545163] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:48:19,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078765248] [2023-08-30 15:48:19,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:19,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:48:19,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:48:19,801 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 15:48:19,828 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 15:48:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:19,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:48:19,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:48:19,908 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 15:48:19,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:48:19,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078765248] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:48:19,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:48:19,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 15:48:19,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316499008] [2023-08-30 15:48:19,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:48:19,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:48:19,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:48:19,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:48:19,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:48:19,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 447 [2023-08-30 15:48:19,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 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 15:48:19,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:48:19,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 447 [2023-08-30 15:48:19,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:48:22,563 INFO L130 PetriNetUnfolder]: 23750/32728 cut-off events. [2023-08-30 15:48:22,563 INFO L131 PetriNetUnfolder]: For 19759/21013 co-relation queries the response was YES. [2023-08-30 15:48:22,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81730 conditions, 32728 events. 23750/32728 cut-off events. For 19759/21013 co-relation queries the response was YES. Maximal size of possible extension queue 1610. Compared 209085 event pairs, 15565 based on Foata normal form. 1210/17493 useless extension candidates. Maximal degree in co-relation 73508. Up to 32519 conditions per place. [2023-08-30 15:48:22,749 INFO L137 encePairwiseOnDemand]: 443/447 looper letters, 62 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2023-08-30 15:48:22,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 552 flow [2023-08-30 15:48:22,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:48:22,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:48:22,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 610 transitions. [2023-08-30 15:48:22,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45488441461595824 [2023-08-30 15:48:22,751 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 610 transitions. [2023-08-30 15:48:22,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 610 transitions. [2023-08-30 15:48:22,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:48:22,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 610 transitions. [2023-08-30 15:48:22,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 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 15:48:22,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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 15:48:22,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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 15:48:22,756 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 444 flow. Second operand 3 states and 610 transitions. [2023-08-30 15:48:22,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 552 flow [2023-08-30 15:48:22,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 460 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-08-30 15:48:22,760 INFO L231 Difference]: Finished difference. Result has 65 places, 66 transitions, 336 flow [2023-08-30 15:48:22,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=65, PETRI_TRANSITIONS=66} [2023-08-30 15:48:22,761 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 15 predicate places. [2023-08-30 15:48:22,761 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 66 transitions, 336 flow [2023-08-30 15:48:22,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 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 15:48:22,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:48:22,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:48:22,771 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 15:48:22,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:48:22,969 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:48:22,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:48:22,970 INFO L85 PathProgramCache]: Analyzing trace with hash -818108275, now seen corresponding path program 1 times [2023-08-30 15:48:22,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:48:22,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580351125] [2023-08-30 15:48:22,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:22,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:48:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:23,097 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 15:48:23,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:48:23,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580351125] [2023-08-30 15:48:23,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580351125] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:48:23,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545200189] [2023-08-30 15:48:23,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:23,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:48:23,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:48:23,099 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 15:48:23,109 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 15:48:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:23,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:48:23,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:48:23,254 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 15:48:23,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:48:23,313 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 15:48:23,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545200189] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:48:23,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:48:23,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-30 15:48:23,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653972054] [2023-08-30 15:48:23,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:48:23,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 15:48:23,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:48:23,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 15:48:23,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-08-30 15:48:23,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 447 [2023-08-30 15:48:23,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 336 flow. Second operand has 12 states, 12 states have (on average 179.41666666666666) internal successors, (2153), 12 states have internal predecessors, (2153), 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 15:48:23,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:48:23,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 447 [2023-08-30 15:48:23,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:48:27,388 INFO L130 PetriNetUnfolder]: 33166/46545 cut-off events. [2023-08-30 15:48:27,388 INFO L131 PetriNetUnfolder]: For 34057/36345 co-relation queries the response was YES. [2023-08-30 15:48:27,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112967 conditions, 46545 events. 33166/46545 cut-off events. For 34057/36345 co-relation queries the response was YES. Maximal size of possible extension queue 2257. Compared 322918 event pairs, 16577 based on Foata normal form. 6336/29011 useless extension candidates. Maximal degree in co-relation 112945. Up to 32195 conditions per place. [2023-08-30 15:48:27,676 INFO L137 encePairwiseOnDemand]: 437/447 looper letters, 143 selfloop transitions, 11 changer transitions 3/160 dead transitions. [2023-08-30 15:48:27,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 160 transitions, 1002 flow [2023-08-30 15:48:27,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 15:48:27,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 15:48:27,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1896 transitions. [2023-08-30 15:48:27,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42416107382550333 [2023-08-30 15:48:27,681 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1896 transitions. [2023-08-30 15:48:27,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1896 transitions. [2023-08-30 15:48:27,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:48:27,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1896 transitions. [2023-08-30 15:48:27,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 189.6) internal successors, (1896), 10 states have internal predecessors, (1896), 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 15:48:27,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 447.0) internal successors, (4917), 11 states have internal predecessors, (4917), 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 15:48:27,692 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 447.0) internal successors, (4917), 11 states have internal predecessors, (4917), 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 15:48:27,692 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 336 flow. Second operand 10 states and 1896 transitions. [2023-08-30 15:48:27,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 160 transitions, 1002 flow [2023-08-30 15:48:27,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 160 transitions, 1001 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:48:27,698 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 437 flow [2023-08-30 15:48:27,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=437, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2023-08-30 15:48:27,699 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 27 predicate places. [2023-08-30 15:48:27,699 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 437 flow [2023-08-30 15:48:27,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 179.41666666666666) internal successors, (2153), 12 states have internal predecessors, (2153), 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 15:48:27,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:48:27,700 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:48:27,708 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 15:48:27,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:48:27,905 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:48:27,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:48:27,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1149840102, now seen corresponding path program 2 times [2023-08-30 15:48:27,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:48:27,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709764515] [2023-08-30 15:48:27,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:27,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:48:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:27,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:48:27,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:48:27,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709764515] [2023-08-30 15:48:27,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709764515] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:48:27,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913365233] [2023-08-30 15:48:27,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:48:27,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:48:27,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:48:27,974 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 15:48:28,001 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 15:48:28,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:48:28,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:48:28,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:48:28,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:48:28,092 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 15:48:28,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:48:28,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913365233] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:48:28,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:48:28,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 15:48:28,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116540596] [2023-08-30 15:48:28,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:48:28,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:48:28,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:48:28,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:48:28,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:48:28,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 447 [2023-08-30 15:48:28,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 437 flow. Second operand has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 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 15:48:28,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:48:28,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 447 [2023-08-30 15:48:28,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:48:32,585 INFO L130 PetriNetUnfolder]: 37709/52331 cut-off events. [2023-08-30 15:48:32,585 INFO L131 PetriNetUnfolder]: For 46225/46225 co-relation queries the response was YES. [2023-08-30 15:48:32,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140914 conditions, 52331 events. 37709/52331 cut-off events. For 46225/46225 co-relation queries the response was YES. Maximal size of possible extension queue 2419. Compared 363689 event pairs, 9471 based on Foata normal form. 0/26899 useless extension candidates. Maximal degree in co-relation 140887. Up to 24420 conditions per place. [2023-08-30 15:48:32,926 INFO L137 encePairwiseOnDemand]: 444/447 looper letters, 103 selfloop transitions, 3 changer transitions 0/108 dead transitions. [2023-08-30 15:48:32,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 108 transitions, 755 flow [2023-08-30 15:48:32,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:48:32,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:48:32,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 838 transitions. [2023-08-30 15:48:32,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46868008948545864 [2023-08-30 15:48:32,928 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 838 transitions. [2023-08-30 15:48:32,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 838 transitions. [2023-08-30 15:48:32,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:48:32,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 838 transitions. [2023-08-30 15:48:32,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 209.5) internal successors, (838), 4 states have internal predecessors, (838), 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 15:48:32,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 447.0) internal successors, (2235), 5 states have internal predecessors, (2235), 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 15:48:32,934 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 447.0) internal successors, (2235), 5 states have internal predecessors, (2235), 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 15:48:32,934 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 437 flow. Second operand 4 states and 838 transitions. [2023-08-30 15:48:32,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 108 transitions, 755 flow [2023-08-30 15:48:32,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 108 transitions, 740 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 15:48:32,961 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 424 flow [2023-08-30 15:48:32,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=424, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2023-08-30 15:48:32,962 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 27 predicate places. [2023-08-30 15:48:32,962 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 424 flow [2023-08-30 15:48:32,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 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 15:48:32,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:48:32,963 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:48:32,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 15:48:33,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:48:33,168 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:48:33,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:48:33,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1149840121, now seen corresponding path program 1 times [2023-08-30 15:48:33,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:48:33,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897604299] [2023-08-30 15:48:33,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:33,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:48:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:33,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:48:33,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:48:33,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897604299] [2023-08-30 15:48:33,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897604299] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:48:33,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703716067] [2023-08-30 15:48:33,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:33,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:48:33,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:48:33,245 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 15:48:33,255 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 15:48:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:33,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:48:33,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:48:33,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:48:33,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:48:33,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:48:33,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703716067] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:48:33,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:48:33,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 15:48:33,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794875954] [2023-08-30 15:48:33,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:48:33,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:48:33,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:48:33,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:48:33,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:48:33,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 447 [2023-08-30 15:48:33,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 424 flow. Second operand has 7 states, 7 states have (on average 193.85714285714286) internal successors, (1357), 7 states have internal predecessors, (1357), 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 15:48:33,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:48:33,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 447 [2023-08-30 15:48:33,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:48:40,924 INFO L130 PetriNetUnfolder]: 65011/89401 cut-off events. [2023-08-30 15:48:40,925 INFO L131 PetriNetUnfolder]: For 86420/86420 co-relation queries the response was YES. [2023-08-30 15:48:41,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246336 conditions, 89401 events. 65011/89401 cut-off events. For 86420/86420 co-relation queries the response was YES. Maximal size of possible extension queue 3925. Compared 642077 event pairs, 13431 based on Foata normal form. 0/47238 useless extension candidates. Maximal degree in co-relation 246309. Up to 24420 conditions per place. [2023-08-30 15:48:41,813 INFO L137 encePairwiseOnDemand]: 444/447 looper letters, 150 selfloop transitions, 6 changer transitions 0/158 dead transitions. [2023-08-30 15:48:41,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 158 transitions, 1006 flow [2023-08-30 15:48:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:48:41,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:48:41,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1274 transitions. [2023-08-30 15:48:41,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4750186428038777 [2023-08-30 15:48:41,817 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1274 transitions. [2023-08-30 15:48:41,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1274 transitions. [2023-08-30 15:48:41,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:48:41,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1274 transitions. [2023-08-30 15:48:41,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 212.33333333333334) internal successors, (1274), 6 states have internal predecessors, (1274), 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 15:48:41,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 447.0) internal successors, (3129), 7 states have internal predecessors, (3129), 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 15:48:41,831 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 447.0) internal successors, (3129), 7 states have internal predecessors, (3129), 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 15:48:41,832 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 424 flow. Second operand 6 states and 1274 transitions. [2023-08-30 15:48:41,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 158 transitions, 1006 flow [2023-08-30 15:48:41,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 158 transitions, 1002 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:48:41,884 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 465 flow [2023-08-30 15:48:41,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=465, PETRI_PLACES=83, PETRI_TRANSITIONS=73} [2023-08-30 15:48:41,884 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2023-08-30 15:48:41,884 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 465 flow [2023-08-30 15:48:41,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 193.85714285714286) internal successors, (1357), 7 states have internal predecessors, (1357), 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 15:48:41,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:48:41,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:48:41,894 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 15:48:42,090 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,SelfDestructingSolverStorable10 [2023-08-30 15:48:42,092 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:48:42,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:48:42,092 INFO L85 PathProgramCache]: Analyzing trace with hash -26959065, now seen corresponding path program 1 times [2023-08-30 15:48:42,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:48:42,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643482918] [2023-08-30 15:48:42,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:42,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:48:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:42,178 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 15:48:42,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:48:42,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643482918] [2023-08-30 15:48:42,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643482918] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:48:42,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:48:42,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:48:42,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234837999] [2023-08-30 15:48:42,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:48:42,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:48:42,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:48:42,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:48:42,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:48:42,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 447 [2023-08-30 15:48:42,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 73 transitions, 465 flow. Second operand has 4 states, 4 states have (on average 186.25) internal successors, (745), 4 states have internal predecessors, (745), 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 15:48:42,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:48:42,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 447 [2023-08-30 15:48:42,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:48:48,833 INFO L130 PetriNetUnfolder]: 52386/72631 cut-off events. [2023-08-30 15:48:48,834 INFO L131 PetriNetUnfolder]: For 133111/135629 co-relation queries the response was YES. [2023-08-30 15:48:49,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211701 conditions, 72631 events. 52386/72631 cut-off events. For 133111/135629 co-relation queries the response was YES. Maximal size of possible extension queue 3484. Compared 519195 event pairs, 34584 based on Foata normal form. 2666/41937 useless extension candidates. Maximal degree in co-relation 211671. Up to 72009 conditions per place. [2023-08-30 15:48:49,369 INFO L137 encePairwiseOnDemand]: 434/447 looper letters, 70 selfloop transitions, 14 changer transitions 6/93 dead transitions. [2023-08-30 15:48:49,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 93 transitions, 781 flow [2023-08-30 15:48:49,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:48:49,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:48:49,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 790 transitions. [2023-08-30 15:48:49,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441834451901566 [2023-08-30 15:48:49,374 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 790 transitions. [2023-08-30 15:48:49,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 790 transitions. [2023-08-30 15:48:49,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:48:49,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 790 transitions. [2023-08-30 15:48:49,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 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 15:48:49,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 447.0) internal successors, (2235), 5 states have internal predecessors, (2235), 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 15:48:49,378 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 447.0) internal successors, (2235), 5 states have internal predecessors, (2235), 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 15:48:49,379 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 465 flow. Second operand 4 states and 790 transitions. [2023-08-30 15:48:49,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 93 transitions, 781 flow [2023-08-30 15:48:49,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 93 transitions, 764 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 15:48:49,435 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 523 flow [2023-08-30 15:48:49,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=523, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2023-08-30 15:48:49,436 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 37 predicate places. [2023-08-30 15:48:49,436 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 523 flow [2023-08-30 15:48:49,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 186.25) internal successors, (745), 4 states have internal predecessors, (745), 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 15:48:49,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:48:49,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:48:49,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 15:48:49,437 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:48:49,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:48:49,437 INFO L85 PathProgramCache]: Analyzing trace with hash 708352741, now seen corresponding path program 1 times [2023-08-30 15:48:49,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:48:49,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098458358] [2023-08-30 15:48:49,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:49,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:48:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:49,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:48:49,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:48:49,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098458358] [2023-08-30 15:48:49,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098458358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:48:49,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:48:49,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:48:49,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717172908] [2023-08-30 15:48:49,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:48:49,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:48:49,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:48:49,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:48:49,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:48:49,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 447 [2023-08-30 15:48:49,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 523 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 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 15:48:49,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:48:49,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 447 [2023-08-30 15:48:49,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:48:55,703 INFO L130 PetriNetUnfolder]: 48222/66773 cut-off events. [2023-08-30 15:48:55,703 INFO L131 PetriNetUnfolder]: For 99164/100034 co-relation queries the response was YES. [2023-08-30 15:48:56,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225592 conditions, 66773 events. 48222/66773 cut-off events. For 99164/100034 co-relation queries the response was YES. Maximal size of possible extension queue 3303. Compared 469364 event pairs, 12004 based on Foata normal form. 1138/36831 useless extension candidates. Maximal degree in co-relation 225559. Up to 65815 conditions per place. [2023-08-30 15:48:56,210 INFO L137 encePairwiseOnDemand]: 443/447 looper letters, 76 selfloop transitions, 5 changer transitions 0/84 dead transitions. [2023-08-30 15:48:56,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 720 flow [2023-08-30 15:48:56,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:48:56,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:48:56,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2023-08-30 15:48:56,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571215510812826 [2023-08-30 15:48:56,212 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2023-08-30 15:48:56,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2023-08-30 15:48:56,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:48:56,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2023-08-30 15:48:56,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 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 15:48:56,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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 15:48:56,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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 15:48:56,215 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 523 flow. Second operand 3 states and 613 transitions. [2023-08-30 15:48:56,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 720 flow [2023-08-30 15:48:56,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 84 transitions, 689 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 15:48:56,298 INFO L231 Difference]: Finished difference. Result has 88 places, 74 transitions, 513 flow [2023-08-30 15:48:56,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=513, PETRI_PLACES=88, PETRI_TRANSITIONS=74} [2023-08-30 15:48:56,299 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 38 predicate places. [2023-08-30 15:48:56,299 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 74 transitions, 513 flow [2023-08-30 15:48:56,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 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 15:48:56,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:48:56,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:48:56,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 15:48:56,300 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:48:56,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:48:56,301 INFO L85 PathProgramCache]: Analyzing trace with hash -356178230, now seen corresponding path program 1 times [2023-08-30 15:48:56,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:48:56,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600457747] [2023-08-30 15:48:56,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:56,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:48:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:56,375 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 15:48:56,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:48:56,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600457747] [2023-08-30 15:48:56,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600457747] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:48:56,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:48:56,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:48:56,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134622832] [2023-08-30 15:48:56,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:48:56,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:48:56,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:48:56,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:48:56,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:48:56,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 447 [2023-08-30 15:48:56,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 74 transitions, 513 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 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 15:48:56,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:48:56,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 447 [2023-08-30 15:48:56,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:49:01,856 INFO L130 PetriNetUnfolder]: 45342/63155 cut-off events. [2023-08-30 15:49:01,856 INFO L131 PetriNetUnfolder]: For 125581/125911 co-relation queries the response was YES. [2023-08-30 15:49:02,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217327 conditions, 63155 events. 45342/63155 cut-off events. For 125581/125911 co-relation queries the response was YES. Maximal size of possible extension queue 3025. Compared 412836 event pairs, 6540 based on Foata normal form. 1430/34345 useless extension candidates. Maximal degree in co-relation 217293. Up to 57961 conditions per place. [2023-08-30 15:49:02,370 INFO L137 encePairwiseOnDemand]: 437/447 looper letters, 83 selfloop transitions, 5 changer transitions 0/91 dead transitions. [2023-08-30 15:49:02,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 91 transitions, 787 flow [2023-08-30 15:49:02,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:49:02,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:49:02,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2023-08-30 15:49:02,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571215510812826 [2023-08-30 15:49:02,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2023-08-30 15:49:02,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2023-08-30 15:49:02,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:49:02,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2023-08-30 15:49:02,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 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 15:49:02,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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 15:49:02,375 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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 15:49:02,375 INFO L175 Difference]: Start difference. First operand has 88 places, 74 transitions, 513 flow. Second operand 3 states and 613 transitions. [2023-08-30 15:49:02,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 91 transitions, 787 flow [2023-08-30 15:49:02,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 91 transitions, 754 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-08-30 15:49:02,423 INFO L231 Difference]: Finished difference. Result has 90 places, 78 transitions, 541 flow [2023-08-30 15:49:02,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=541, PETRI_PLACES=90, PETRI_TRANSITIONS=78} [2023-08-30 15:49:02,424 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 40 predicate places. [2023-08-30 15:49:02,424 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 78 transitions, 541 flow [2023-08-30 15:49:02,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 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 15:49:02,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:49:02,425 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 15:49:02,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 15:49:02,425 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:49:02,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:49:02,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1770095374, now seen corresponding path program 2 times [2023-08-30 15:49:02,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:49:02,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145168089] [2023-08-30 15:49:02,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:49:02,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:49:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:49:02,514 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:49:02,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:49:02,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145168089] [2023-08-30 15:49:02,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145168089] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:49:02,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998554822] [2023-08-30 15:49:02,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:49:02,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:49:02,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:49:02,517 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 15:49:02,524 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 15:49:02,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:49:02,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:49:02,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:49:02,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:49:02,639 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 15:49:02,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:49:02,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998554822] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:49:02,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:49:02,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-30 15:49:02,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760487811] [2023-08-30 15:49:02,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:49:02,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:49:02,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:49:02,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:49:02,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:49:02,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 447 [2023-08-30 15:49:02,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 78 transitions, 541 flow. Second operand has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 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 15:49:02,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:49:02,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 447 [2023-08-30 15:49:02,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:49:08,033 INFO L130 PetriNetUnfolder]: 42460/59283 cut-off events. [2023-08-30 15:49:08,033 INFO L131 PetriNetUnfolder]: For 60665/60995 co-relation queries the response was YES. [2023-08-30 15:49:08,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215820 conditions, 59283 events. 42460/59283 cut-off events. For 60665/60995 co-relation queries the response was YES. Maximal size of possible extension queue 2844. Compared 386053 event pairs, 21618 based on Foata normal form. 1320/34863 useless extension candidates. Maximal degree in co-relation 215784. Up to 59052 conditions per place. [2023-08-30 15:49:08,488 INFO L137 encePairwiseOnDemand]: 445/447 looper letters, 72 selfloop transitions, 1 changer transitions 1/77 dead transitions. [2023-08-30 15:49:08,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 77 transitions, 677 flow [2023-08-30 15:49:08,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:49:08,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:49:08,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 606 transitions. [2023-08-30 15:49:08,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519015659955257 [2023-08-30 15:49:08,489 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 606 transitions. [2023-08-30 15:49:08,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 606 transitions. [2023-08-30 15:49:08,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:49:08,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 606 transitions. [2023-08-30 15:49:08,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 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 15:49:08,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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 15:49:08,492 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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 15:49:08,492 INFO L175 Difference]: Start difference. First operand has 90 places, 78 transitions, 541 flow. Second operand 3 states and 606 transitions. [2023-08-30 15:49:08,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 77 transitions, 677 flow [2023-08-30 15:49:08,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 77 transitions, 660 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 15:49:08,521 INFO L231 Difference]: Finished difference. Result has 86 places, 76 transitions, 508 flow [2023-08-30 15:49:08,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2023-08-30 15:49:08,521 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 36 predicate places. [2023-08-30 15:49:08,521 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 508 flow [2023-08-30 15:49:08,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 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 15:49:08,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:49:08,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:49:08,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 15:49:08,728 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,SelfDestructingSolverStorable14 [2023-08-30 15:49:08,728 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:49:08,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:49:08,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1590415616, now seen corresponding path program 1 times [2023-08-30 15:49:08,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:49:08,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000483612] [2023-08-30 15:49:08,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:49:08,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:49:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:49:09,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:49:09,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:49:09,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000483612] [2023-08-30 15:49:09,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000483612] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:49:09,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289063564] [2023-08-30 15:49:09,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:49:09,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:49:09,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:49:09,215 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 15:49:09,216 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 15:49:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:49:09,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-30 15:49:09,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:49:09,428 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 15:49:09,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:49:09,493 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 15:49:09,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:49:09,565 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 15:49:09,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:49:09,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:49:09,843 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:49:09,844 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 31 treesize of output 32 [2023-08-30 15:49:09,855 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:49:09,856 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 87 treesize of output 79 [2023-08-30 15:49:09,864 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 68 treesize of output 56 [2023-08-30 15:49:09,881 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 30 treesize of output 24 [2023-08-30 15:49:10,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:49:10,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289063564] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:49:10,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:49:10,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2023-08-30 15:49:10,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254247605] [2023-08-30 15:49:10,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:49:10,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 15:49:10,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:49:10,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 15:49:10,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=261, Unknown=2, NotChecked=0, Total=306 [2023-08-30 15:49:13,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:49:13,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 447 [2023-08-30 15:49:13,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 508 flow. Second operand has 18 states, 18 states have (on average 130.0) internal successors, (2340), 18 states have internal predecessors, (2340), 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 15:49:13,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:49:13,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 447 [2023-08-30 15:49:13,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:49:22,434 INFO L130 PetriNetUnfolder]: 56012/80932 cut-off events. [2023-08-30 15:49:22,434 INFO L131 PetriNetUnfolder]: For 49058/49328 co-relation queries the response was YES. [2023-08-30 15:49:22,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284076 conditions, 80932 events. 56012/80932 cut-off events. For 49058/49328 co-relation queries the response was YES. Maximal size of possible extension queue 3968. Compared 587481 event pairs, 18792 based on Foata normal form. 281/46479 useless extension candidates. Maximal degree in co-relation 284043. Up to 52797 conditions per place. [2023-08-30 15:49:23,213 INFO L137 encePairwiseOnDemand]: 430/447 looper letters, 153 selfloop transitions, 59 changer transitions 9/223 dead transitions. [2023-08-30 15:49:23,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 223 transitions, 1614 flow [2023-08-30 15:49:23,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-30 15:49:23,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-30 15:49:23,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4023 transitions. [2023-08-30 15:49:23,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2023-08-30 15:49:23,220 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4023 transitions. [2023-08-30 15:49:23,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4023 transitions. [2023-08-30 15:49:23,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:49:23,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4023 transitions. [2023-08-30 15:49:23,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 134.1) internal successors, (4023), 30 states have internal predecessors, (4023), 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 15:49:23,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 447.0) internal successors, (13857), 31 states have internal predecessors, (13857), 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 15:49:23,236 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 447.0) internal successors, (13857), 31 states have internal predecessors, (13857), 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 15:49:23,236 INFO L175 Difference]: Start difference. First operand has 86 places, 76 transitions, 508 flow. Second operand 30 states and 4023 transitions. [2023-08-30 15:49:23,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 223 transitions, 1614 flow [2023-08-30 15:49:23,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 223 transitions, 1585 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-08-30 15:49:23,255 INFO L231 Difference]: Finished difference. Result has 125 places, 115 transitions, 880 flow [2023-08-30 15:49:23,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=880, PETRI_PLACES=125, PETRI_TRANSITIONS=115} [2023-08-30 15:49:23,255 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 75 predicate places. [2023-08-30 15:49:23,255 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 115 transitions, 880 flow [2023-08-30 15:49:23,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 130.0) internal successors, (2340), 18 states have internal predecessors, (2340), 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 15:49:23,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:49:23,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:49:23,265 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 15:49:23,462 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,SelfDestructingSolverStorable15 [2023-08-30 15:49:23,462 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:49:23,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:49:23,462 INFO L85 PathProgramCache]: Analyzing trace with hash 2119953933, now seen corresponding path program 1 times [2023-08-30 15:49:23,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:49:23,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094512687] [2023-08-30 15:49:23,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:49:23,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:49:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:49:24,318 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 15:49:24,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:49:24,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094512687] [2023-08-30 15:49:24,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094512687] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:49:24,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533597704] [2023-08-30 15:49:24,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:49:24,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:49:24,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:49:24,321 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:49:24,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 15:49:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:49:24,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 15:49:24,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:49:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:49:24,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:49:24,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533597704] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:49:24,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:49:24,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2023-08-30 15:49:24,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819495245] [2023-08-30 15:49:24,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:49:24,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:49:24,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:49:24,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:49:24,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:49:24,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 447 [2023-08-30 15:49:24,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 115 transitions, 880 flow. Second operand has 5 states, 5 states have (on average 181.4) internal successors, (907), 5 states have internal predecessors, (907), 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 15:49:24,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:49:24,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 447 [2023-08-30 15:49:24,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:49:33,362 INFO L130 PetriNetUnfolder]: 59681/86799 cut-off events. [2023-08-30 15:49:33,362 INFO L131 PetriNetUnfolder]: For 122761/123022 co-relation queries the response was YES. [2023-08-30 15:49:33,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334500 conditions, 86799 events. 59681/86799 cut-off events. For 122761/123022 co-relation queries the response was YES. Maximal size of possible extension queue 4540. Compared 650226 event pairs, 26803 based on Foata normal form. 261/53371 useless extension candidates. Maximal degree in co-relation 334454. Up to 80672 conditions per place. [2023-08-30 15:49:34,385 INFO L137 encePairwiseOnDemand]: 440/447 looper letters, 139 selfloop transitions, 17 changer transitions 0/158 dead transitions. [2023-08-30 15:49:34,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 158 transitions, 1419 flow [2023-08-30 15:49:34,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:49:34,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:49:34,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 960 transitions. [2023-08-30 15:49:34,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42953020134228187 [2023-08-30 15:49:34,387 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 960 transitions. [2023-08-30 15:49:34,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 960 transitions. [2023-08-30 15:49:34,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:49:34,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 960 transitions. [2023-08-30 15:49:34,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 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 15:49:34,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 447.0) internal successors, (2682), 6 states have internal predecessors, (2682), 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 15:49:34,391 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 447.0) internal successors, (2682), 6 states have internal predecessors, (2682), 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 15:49:34,391 INFO L175 Difference]: Start difference. First operand has 125 places, 115 transitions, 880 flow. Second operand 5 states and 960 transitions. [2023-08-30 15:49:34,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 158 transitions, 1419 flow [2023-08-30 15:49:36,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 158 transitions, 1315 flow, removed 18 selfloop flow, removed 11 redundant places. [2023-08-30 15:49:36,074 INFO L231 Difference]: Finished difference. Result has 118 places, 122 transitions, 883 flow [2023-08-30 15:49:36,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=883, PETRI_PLACES=118, PETRI_TRANSITIONS=122} [2023-08-30 15:49:36,074 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 68 predicate places. [2023-08-30 15:49:36,074 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 122 transitions, 883 flow [2023-08-30 15:49:36,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.4) internal successors, (907), 5 states have internal predecessors, (907), 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 15:49:36,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:49:36,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:49:36,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 15:49:36,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 15:49:36,275 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:49:36,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:49:36,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1960193687, now seen corresponding path program 2 times [2023-08-30 15:49:36,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:49:36,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988896587] [2023-08-30 15:49:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:49:36,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:49:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:49:36,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:49:36,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:49:36,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988896587] [2023-08-30 15:49:36,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988896587] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:49:36,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9516384] [2023-08-30 15:49:36,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:49:36,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:49:36,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:49:36,793 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:49:36,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 15:49:36,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:49:36,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:49:36,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 15:49:36,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:49:37,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:49:37,037 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 18 treesize of output 20 [2023-08-30 15:49:37,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:49:37,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:49:37,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9516384] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:49:37,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:49:37,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-30 15:49:37,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009867020] [2023-08-30 15:49:37,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:49:37,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:49:37,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:49:37,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:49:37,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:49:37,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 447 [2023-08-30 15:49:37,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 122 transitions, 883 flow. Second operand has 7 states, 7 states have (on average 173.71428571428572) internal successors, (1216), 7 states have internal predecessors, (1216), 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 15:49:37,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:49:37,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 447 [2023-08-30 15:49:37,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:49:46,395 INFO L130 PetriNetUnfolder]: 62681/91779 cut-off events. [2023-08-30 15:49:46,395 INFO L131 PetriNetUnfolder]: For 169922/170183 co-relation queries the response was YES. [2023-08-30 15:49:46,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359787 conditions, 91779 events. 62681/91779 cut-off events. For 169922/170183 co-relation queries the response was YES. Maximal size of possible extension queue 4746. Compared 702850 event pairs, 28141 based on Foata normal form. 381/57005 useless extension candidates. Maximal degree in co-relation 359742. Up to 80904 conditions per place. [2023-08-30 15:49:47,479 INFO L137 encePairwiseOnDemand]: 440/447 looper letters, 131 selfloop transitions, 31 changer transitions 0/164 dead transitions. [2023-08-30 15:49:47,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 164 transitions, 1453 flow [2023-08-30 15:49:47,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:49:47,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:49:47,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1097 transitions. [2023-08-30 15:49:47,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40902311707680833 [2023-08-30 15:49:47,481 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1097 transitions. [2023-08-30 15:49:47,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1097 transitions. [2023-08-30 15:49:47,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:49:47,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1097 transitions. [2023-08-30 15:49:47,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 182.83333333333334) internal successors, (1097), 6 states have internal predecessors, (1097), 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 15:49:47,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 447.0) internal successors, (3129), 7 states have internal predecessors, (3129), 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 15:49:47,486 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 447.0) internal successors, (3129), 7 states have internal predecessors, (3129), 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 15:49:47,486 INFO L175 Difference]: Start difference. First operand has 118 places, 122 transitions, 883 flow. Second operand 6 states and 1097 transitions. [2023-08-30 15:49:47,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 164 transitions, 1453 flow [2023-08-30 15:49:48,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 164 transitions, 1428 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-30 15:49:49,001 INFO L231 Difference]: Finished difference. Result has 124 places, 128 transitions, 998 flow [2023-08-30 15:49:49,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=998, PETRI_PLACES=124, PETRI_TRANSITIONS=128} [2023-08-30 15:49:49,001 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 74 predicate places. [2023-08-30 15:49:49,002 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 128 transitions, 998 flow [2023-08-30 15:49:49,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.71428571428572) internal successors, (1216), 7 states have internal predecessors, (1216), 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 15:49:49,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:49:49,002 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-08-30 15:49:49,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 15:49:49,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 15:49:49,203 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:49:49,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:49:49,203 INFO L85 PathProgramCache]: Analyzing trace with hash -219545194, now seen corresponding path program 2 times [2023-08-30 15:49:49,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:49:49,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596189021] [2023-08-30 15:49:49,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:49:49,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:49:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:49:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:49:49,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:49:49,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596189021] [2023-08-30 15:49:49,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596189021] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:49:49,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786845905] [2023-08-30 15:49:49,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:49:49,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:49:49,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:49:49,368 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:49:49,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 15:49:49,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:49:49,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:49:49,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:49:49,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:49:49,507 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 15:49:49,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:49:49,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786845905] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:49:49,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:49:49,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-08-30 15:49:49,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325354701] [2023-08-30 15:49:49,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:49:49,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:49:49,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:49:49,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:49:49,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-08-30 15:49:49,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 447 [2023-08-30 15:49:49,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 128 transitions, 998 flow. Second operand has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 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 15:49:49,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:49:49,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 447 [2023-08-30 15:49:49,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand