./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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-three-array-sum.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 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 12:02:51,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:02:51,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:02:51,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:02:51,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:02:51,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:02:51,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:02:51,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:02:51,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:02:51,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:02:51,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:02:51,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:02:51,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:02:51,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:02:51,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:02:51,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:02:51,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:02:51,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:02:51,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:02:51,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:02:51,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:02:51,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:02:51,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:02:51,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:02:51,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:02:51,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:02:51,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:02:51,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:02:51,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:02:51,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:02:51,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:02:51,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:02:51,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:02:51,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:02:51,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:02:51,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:02:51,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:02:51,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:02:51,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:02:51,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:02:51,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:02:51,619 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:02:51,650 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:02:51,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:02:51,651 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:02:51,652 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:02:51,652 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:02:51,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:02:51,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:02:51,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:02:51,654 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:02:51,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:02:51,655 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:02:51,655 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:02:51,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:02:51,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:02:51,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:02:51,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:02:51,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:02:51,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:02:51,656 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:02:51,656 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:02:51,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:02:51,657 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:02:51,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:02:51,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:02:51,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:02:51,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:02:51,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:02:51,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:02:51,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:02:51,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:02:51,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:02:51,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:02:51,659 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:02:51,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:02:51,660 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:02:51,660 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:02:51,660 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:02:51,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 12:02:51,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:02:52,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:02:52,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:02:52,026 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:02:52,027 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:02:52,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2023-08-30 12:02:53,401 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:02:53,635 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:02:53,636 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2023-08-30 12:02:53,647 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64a457ce9/e85a6045e6384c5d83bd70b461f48393/FLAG3568b26df [2023-08-30 12:02:53,673 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64a457ce9/e85a6045e6384c5d83bd70b461f48393 [2023-08-30 12:02:53,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:02:53,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:02:53,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:02:53,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:02:53,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:02:53,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:02:53" (1/1) ... [2023-08-30 12:02:53,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a45f0f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:53, skipping insertion in model container [2023-08-30 12:02:53,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:02:53" (1/1) ... [2023-08-30 12:02:53,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:02:53,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:02:53,907 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-three-array-sum.wvr.c[2691,2704] [2023-08-30 12:02:53,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:02:53,924 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:02:54,008 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-three-array-sum.wvr.c[2691,2704] [2023-08-30 12:02:54,041 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:02:54,051 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:02:54,051 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:02:54,057 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:02:54,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:54 WrapperNode [2023-08-30 12:02:54,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:02:54,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:02:54,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:02:54,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:02:54,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:54" (1/1) ... [2023-08-30 12:02:54,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:54" (1/1) ... [2023-08-30 12:02:54,129 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 160 [2023-08-30 12:02:54,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:02:54,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:02:54,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:02:54,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:02:54,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:54" (1/1) ... [2023-08-30 12:02:54,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:54" (1/1) ... [2023-08-30 12:02:54,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:54" (1/1) ... [2023-08-30 12:02:54,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:54" (1/1) ... [2023-08-30 12:02:54,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:54" (1/1) ... [2023-08-30 12:02:54,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:54" (1/1) ... [2023-08-30 12:02:54,160 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:54" (1/1) ... [2023-08-30 12:02:54,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:54" (1/1) ... [2023-08-30 12:02:54,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:02:54,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:02:54,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:02:54,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:02:54,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:54" (1/1) ... [2023-08-30 12:02:54,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:02:54,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:02:54,210 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 12:02:54,235 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 12:02:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:02:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:02:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:02:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:02:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 12:02:54,253 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 12:02:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 12:02:54,253 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 12:02:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 12:02:54,253 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 12:02:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:02:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 12:02:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 12:02:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 12:02:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:02:54,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:02:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:02:54,256 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 12:02:54,362 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:02:54,369 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:02:54,881 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:02:54,928 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:02:54,932 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 12:02:54,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:02:54 BoogieIcfgContainer [2023-08-30 12:02:54,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:02:54,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:02:54,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:02:54,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:02:54,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:02:53" (1/3) ... [2023-08-30 12:02:54,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f44c598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:02:54, skipping insertion in model container [2023-08-30 12:02:54,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:54" (2/3) ... [2023-08-30 12:02:54,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f44c598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:02:54, skipping insertion in model container [2023-08-30 12:02:54,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:02:54" (3/3) ... [2023-08-30 12:02:54,944 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2023-08-30 12:02:54,951 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:02:54,960 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:02:54,961 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-30 12:02:54,961 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:02:55,094 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 12:02:55,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 236 transitions, 496 flow [2023-08-30 12:02:55,258 INFO L130 PetriNetUnfolder]: 20/233 cut-off events. [2023-08-30 12:02:55,259 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 12:02:55,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 233 events. 20/233 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 241 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 192. Up to 3 conditions per place. [2023-08-30 12:02:55,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 236 transitions, 496 flow [2023-08-30 12:02:55,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 215 transitions, 445 flow [2023-08-30 12:02:55,274 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:02:55,287 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 215 transitions, 445 flow [2023-08-30 12:02:55,291 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 215 transitions, 445 flow [2023-08-30 12:02:55,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 215 transitions, 445 flow [2023-08-30 12:02:55,356 INFO L130 PetriNetUnfolder]: 19/215 cut-off events. [2023-08-30 12:02:55,357 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:02:55,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 215 events. 19/215 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 240 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 192. Up to 3 conditions per place. [2023-08-30 12:02:55,362 INFO L119 LiptonReduction]: Number of co-enabled transitions 3058 [2023-08-30 12:03:03,770 INFO L134 LiptonReduction]: Checked pairs total: 5037 [2023-08-30 12:03:03,770 INFO L136 LiptonReduction]: Total number of compositions: 238 [2023-08-30 12:03:03,783 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:03:03,788 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;@448b933, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:03:03,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-30 12:03:03,792 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 12:03:03,793 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:03:03,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:03,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 12:03:03,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:03:03,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:03,799 INFO L85 PathProgramCache]: Analyzing trace with hash 28926, now seen corresponding path program 1 times [2023-08-30 12:03:03,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:03,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678289118] [2023-08-30 12:03:03,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:03,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:04,123 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 12:03:04,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:04,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678289118] [2023-08-30 12:03:04,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678289118] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:03:04,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:03:04,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:03:04,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589765650] [2023-08-30 12:03:04,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:03:04,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:03:04,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:04,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:03:04,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:03:04,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 474 [2023-08-30 12:03:04,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 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 12:03:04,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:04,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 474 [2023-08-30 12:03:04,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:04,863 INFO L130 PetriNetUnfolder]: 3103/4125 cut-off events. [2023-08-30 12:03:04,864 INFO L131 PetriNetUnfolder]: For 162/162 co-relation queries the response was YES. [2023-08-30 12:03:04,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8407 conditions, 4125 events. 3103/4125 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 18907 event pairs, 1674 based on Foata normal form. 0/1778 useless extension candidates. Maximal degree in co-relation 3590. Up to 2033 conditions per place. [2023-08-30 12:03:04,900 INFO L137 encePairwiseOnDemand]: 460/474 looper letters, 63 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2023-08-30 12:03:04,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 72 transitions, 312 flow [2023-08-30 12:03:04,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:03:04,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:03:04,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 688 transitions. [2023-08-30 12:03:04,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4838255977496484 [2023-08-30 12:03:04,964 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 688 transitions. [2023-08-30 12:03:04,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 688 transitions. [2023-08-30 12:03:04,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:04,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 688 transitions. [2023-08-30 12:03:04,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 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 12:03:04,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 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 12:03:05,000 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 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 12:03:05,002 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 101 flow. Second operand 3 states and 688 transitions. [2023-08-30 12:03:05,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 72 transitions, 312 flow [2023-08-30 12:03:05,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 72 transitions, 294 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 12:03:05,024 INFO L231 Difference]: Finished difference. Result has 43 places, 46 transitions, 144 flow [2023-08-30 12:03:05,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=43, PETRI_TRANSITIONS=46} [2023-08-30 12:03:05,063 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-08-30 12:03:05,064 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 144 flow [2023-08-30 12:03:05,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 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 12:03:05,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:05,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 12:03:05,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:03:05,066 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:03:05,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:05,066 INFO L85 PathProgramCache]: Analyzing trace with hash 898954, now seen corresponding path program 1 times [2023-08-30 12:03:05,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:05,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494210167] [2023-08-30 12:03:05,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:05,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:05,207 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 12:03:05,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:05,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494210167] [2023-08-30 12:03:05,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494210167] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:05,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827628962] [2023-08-30 12:03:05,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:05,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:05,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:05,212 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 12:03:05,246 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 12:03:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:05,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:03:05,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:05,384 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 12:03:05,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:03:05,417 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 12:03:05,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827628962] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:03:05,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:03:05,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 12:03:05,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184223188] [2023-08-30 12:03:05,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:03:05,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 12:03:05,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:05,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 12:03:05,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:03:05,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 474 [2023-08-30 12:03:05,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 46 transitions, 144 flow. Second operand has 7 states, 7 states have (on average 204.14285714285714) internal successors, (1429), 7 states have internal predecessors, (1429), 0 states have call successors, (0), 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 12:03:05,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:05,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 474 [2023-08-30 12:03:05,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:07,148 INFO L130 PetriNetUnfolder]: 7765/10311 cut-off events. [2023-08-30 12:03:07,148 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2023-08-30 12:03:07,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20844 conditions, 10311 events. 7765/10311 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 53154 event pairs, 4185 based on Foata normal form. 0/4460 useless extension candidates. Maximal degree in co-relation 16591. Up to 2031 conditions per place. [2023-08-30 12:03:07,225 INFO L137 encePairwiseOnDemand]: 462/474 looper letters, 138 selfloop transitions, 33 changer transitions 0/174 dead transitions. [2023-08-30 12:03:07,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 174 transitions, 826 flow [2023-08-30 12:03:07,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:03:07,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:03:07,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1601 transitions. [2023-08-30 12:03:07,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48251959011452683 [2023-08-30 12:03:07,230 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1601 transitions. [2023-08-30 12:03:07,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1601 transitions. [2023-08-30 12:03:07,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:07,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1601 transitions. [2023-08-30 12:03:07,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 228.71428571428572) internal successors, (1601), 7 states have internal predecessors, (1601), 0 states have call successors, (0), 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 12:03:07,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 474.0) internal successors, (3792), 8 states have internal predecessors, (3792), 0 states have call successors, (0), 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 12:03:07,242 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 474.0) internal successors, (3792), 8 states have internal predecessors, (3792), 0 states have call successors, (0), 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 12:03:07,243 INFO L175 Difference]: Start difference. First operand has 43 places, 46 transitions, 144 flow. Second operand 7 states and 1601 transitions. [2023-08-30 12:03:07,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 174 transitions, 826 flow [2023-08-30 12:03:07,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 174 transitions, 802 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:03:07,247 INFO L231 Difference]: Finished difference. Result has 50 places, 70 transitions, 351 flow [2023-08-30 12:03:07,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=50, PETRI_TRANSITIONS=70} [2023-08-30 12:03:07,248 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-08-30 12:03:07,248 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 70 transitions, 351 flow [2023-08-30 12:03:07,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.14285714285714) internal successors, (1429), 7 states have internal predecessors, (1429), 0 states have call successors, (0), 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 12:03:07,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:07,250 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 12:03:07,260 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 12:03:07,456 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 12:03:07,456 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:03:07,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:07,457 INFO L85 PathProgramCache]: Analyzing trace with hash 27868414, now seen corresponding path program 1 times [2023-08-30 12:03:07,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:07,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530617972] [2023-08-30 12:03:07,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:07,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:07,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:03:07,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:07,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530617972] [2023-08-30 12:03:07,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530617972] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:03:07,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:03:07,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:03:07,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140018334] [2023-08-30 12:03:07,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:03:07,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:03:07,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:07,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:03:07,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:03:07,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 474 [2023-08-30 12:03:07,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 70 transitions, 351 flow. Second operand has 3 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 12:03:07,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:07,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 474 [2023-08-30 12:03:07,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:08,519 INFO L130 PetriNetUnfolder]: 7756/10299 cut-off events. [2023-08-30 12:03:08,519 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-08-30 12:03:08,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20847 conditions, 10299 events. 7756/10299 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 53636 event pairs, 4185 based on Foata normal form. 2/4457 useless extension candidates. Maximal degree in co-relation 12480. Up to 10129 conditions per place. [2023-08-30 12:03:08,594 INFO L137 encePairwiseOnDemand]: 470/474 looper letters, 54 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-08-30 12:03:08,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 58 transitions, 380 flow [2023-08-30 12:03:08,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:03:08,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:03:08,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 647 transitions. [2023-08-30 12:03:08,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4549929676511955 [2023-08-30 12:03:08,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 647 transitions. [2023-08-30 12:03:08,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 647 transitions. [2023-08-30 12:03:08,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:08,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 647 transitions. [2023-08-30 12:03:08,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 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 12:03:08,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 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 12:03:08,603 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 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 12:03:08,603 INFO L175 Difference]: Start difference. First operand has 50 places, 70 transitions, 351 flow. Second operand 3 states and 647 transitions. [2023-08-30 12:03:08,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 58 transitions, 380 flow [2023-08-30 12:03:08,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 58 transitions, 350 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 12:03:08,606 INFO L231 Difference]: Finished difference. Result has 47 places, 58 transitions, 242 flow [2023-08-30 12:03:08,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=47, PETRI_TRANSITIONS=58} [2023-08-30 12:03:08,607 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 1 predicate places. [2023-08-30 12:03:08,607 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 58 transitions, 242 flow [2023-08-30 12:03:08,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 12:03:08,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:08,608 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 12:03:08,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 12:03:08,609 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:03:08,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:08,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1011812650, now seen corresponding path program 2 times [2023-08-30 12:03:08,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:08,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74021852] [2023-08-30 12:03:08,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:08,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:08,687 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 12:03:08,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:08,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74021852] [2023-08-30 12:03:08,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74021852] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:08,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204184858] [2023-08-30 12:03:08,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:03:08,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:08,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:08,690 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 12:03:08,718 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 12:03:08,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 12:03:08,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:03:08,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:03:08,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:08,809 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 12:03:08,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:03:08,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204184858] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:03:08,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:03:08,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 12:03:08,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577684956] [2023-08-30 12:03:08,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:03:08,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:03:08,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:08,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:03:08,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 12:03:08,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 474 [2023-08-30 12:03:08,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 58 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 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 12:03:08,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:08,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 474 [2023-08-30 12:03:08,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:09,725 INFO L130 PetriNetUnfolder]: 7756/10298 cut-off events. [2023-08-30 12:03:09,725 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2023-08-30 12:03:09,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20825 conditions, 10298 events. 7756/10298 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 53708 event pairs, 4185 based on Foata normal form. 1/4457 useless extension candidates. Maximal degree in co-relation 20813. Up to 10123 conditions per place. [2023-08-30 12:03:09,798 INFO L137 encePairwiseOnDemand]: 471/474 looper letters, 48 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-08-30 12:03:09,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 57 transitions, 340 flow [2023-08-30 12:03:09,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:03:09,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:03:09,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 653 transitions. [2023-08-30 12:03:09,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45921237693389594 [2023-08-30 12:03:09,801 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 653 transitions. [2023-08-30 12:03:09,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 653 transitions. [2023-08-30 12:03:09,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:09,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 653 transitions. [2023-08-30 12:03:09,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 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 12:03:09,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 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 12:03:09,807 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 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 12:03:09,808 INFO L175 Difference]: Start difference. First operand has 47 places, 58 transitions, 242 flow. Second operand 3 states and 653 transitions. [2023-08-30 12:03:09,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 57 transitions, 340 flow [2023-08-30 12:03:09,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 339 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:03:09,811 INFO L231 Difference]: Finished difference. Result has 47 places, 57 transitions, 243 flow [2023-08-30 12:03:09,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=47, PETRI_TRANSITIONS=57} [2023-08-30 12:03:09,811 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 1 predicate places. [2023-08-30 12:03:09,812 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 57 transitions, 243 flow [2023-08-30 12:03:09,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 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 12:03:09,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:09,813 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 12:03:09,821 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 12:03:10,018 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,SelfDestructingSolverStorable3 [2023-08-30 12:03:10,018 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:03:10,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:10,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1919811594, now seen corresponding path program 1 times [2023-08-30 12:03:10,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:10,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772323288] [2023-08-30 12:03:10,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:10,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:10,178 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 12:03:10,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:10,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772323288] [2023-08-30 12:03:10,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772323288] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:03:10,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:03:10,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:03:10,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138423216] [2023-08-30 12:03:10,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:03:10,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:03:10,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:10,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:03:10,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:03:10,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 474 [2023-08-30 12:03:10,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 57 transitions, 243 flow. Second operand has 4 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 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 12:03:10,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:10,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 474 [2023-08-30 12:03:10,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:11,117 INFO L130 PetriNetUnfolder]: 7416/9864 cut-off events. [2023-08-30 12:03:11,117 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2023-08-30 12:03:11,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19958 conditions, 9864 events. 7416/9864 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 49900 event pairs, 4002 based on Foata normal form. 2/4330 useless extension candidates. Maximal degree in co-relation 19945. Up to 8098 conditions per place. [2023-08-30 12:03:11,187 INFO L137 encePairwiseOnDemand]: 466/474 looper letters, 66 selfloop transitions, 15 changer transitions 0/84 dead transitions. [2023-08-30 12:03:11,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 84 transitions, 467 flow [2023-08-30 12:03:11,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:03:11,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:03:11,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 849 transitions. [2023-08-30 12:03:11,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4477848101265823 [2023-08-30 12:03:11,190 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 849 transitions. [2023-08-30 12:03:11,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 849 transitions. [2023-08-30 12:03:11,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:11,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 849 transitions. [2023-08-30 12:03:11,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 212.25) internal successors, (849), 4 states have internal predecessors, (849), 0 states have call successors, (0), 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 12:03:11,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 474.0) internal successors, (2370), 5 states have internal predecessors, (2370), 0 states have call successors, (0), 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 12:03:11,197 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 474.0) internal successors, (2370), 5 states have internal predecessors, (2370), 0 states have call successors, (0), 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 12:03:11,197 INFO L175 Difference]: Start difference. First operand has 47 places, 57 transitions, 243 flow. Second operand 4 states and 849 transitions. [2023-08-30 12:03:11,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 84 transitions, 467 flow [2023-08-30 12:03:11,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 84 transitions, 455 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:03:11,200 INFO L231 Difference]: Finished difference. Result has 50 places, 59 transitions, 291 flow [2023-08-30 12:03:11,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=50, PETRI_TRANSITIONS=59} [2023-08-30 12:03:11,201 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-08-30 12:03:11,201 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 59 transitions, 291 flow [2023-08-30 12:03:11,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 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 12:03:11,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:11,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:11,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 12:03:11,202 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:03:11,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:11,203 INFO L85 PathProgramCache]: Analyzing trace with hash -602529099, now seen corresponding path program 1 times [2023-08-30 12:03:11,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:11,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747567530] [2023-08-30 12:03:11,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:11,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:11,252 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 12:03:11,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:11,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747567530] [2023-08-30 12:03:11,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747567530] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:03:11,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:03:11,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:03:11,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452771402] [2023-08-30 12:03:11,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:03:11,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:03:11,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:11,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:03:11,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:03:11,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 474 [2023-08-30 12:03:11,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 59 transitions, 291 flow. Second operand has 3 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 12:03:11,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:11,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 474 [2023-08-30 12:03:11,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:12,271 INFO L130 PetriNetUnfolder]: 12121/15955 cut-off events. [2023-08-30 12:03:12,272 INFO L131 PetriNetUnfolder]: For 1327/1327 co-relation queries the response was YES. [2023-08-30 12:03:12,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33604 conditions, 15955 events. 12121/15955 cut-off events. For 1327/1327 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 84135 event pairs, 3502 based on Foata normal form. 0/8420 useless extension candidates. Maximal degree in co-relation 33589. Up to 10065 conditions per place. [2023-08-30 12:03:12,352 INFO L137 encePairwiseOnDemand]: 470/474 looper letters, 77 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-30 12:03:12,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 81 transitions, 500 flow [2023-08-30 12:03:12,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:03:12,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:03:12,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 689 transitions. [2023-08-30 12:03:12,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48452883263009844 [2023-08-30 12:03:12,356 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 689 transitions. [2023-08-30 12:03:12,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 689 transitions. [2023-08-30 12:03:12,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:12,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 689 transitions. [2023-08-30 12:03:12,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 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 12:03:12,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 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 12:03:12,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 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 12:03:12,361 INFO L175 Difference]: Start difference. First operand has 50 places, 59 transitions, 291 flow. Second operand 3 states and 689 transitions. [2023-08-30 12:03:12,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 81 transitions, 500 flow [2023-08-30 12:03:12,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 81 transitions, 484 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 12:03:12,369 INFO L231 Difference]: Finished difference. Result has 52 places, 60 transitions, 289 flow [2023-08-30 12:03:12,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=52, PETRI_TRANSITIONS=60} [2023-08-30 12:03:12,371 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 6 predicate places. [2023-08-30 12:03:12,371 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 60 transitions, 289 flow [2023-08-30 12:03:12,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 12:03:12,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:12,372 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-30 12:03:12,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 12:03:12,372 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:03:12,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:12,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1987201622, now seen corresponding path program 1 times [2023-08-30 12:03:12,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:12,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47507098] [2023-08-30 12:03:12,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:12,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:12,490 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 12:03:12,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:12,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47507098] [2023-08-30 12:03:12,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47507098] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:12,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256613696] [2023-08-30 12:03:12,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:12,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:12,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:12,493 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 12:03:12,517 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 12:03:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:12,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 12:03:12,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:12,670 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 12:03:12,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:03:12,730 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 12:03:12,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256613696] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:03:12,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:03:12,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-08-30 12:03:12,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169755043] [2023-08-30 12:03:12,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:03:12,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 12:03:12,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:12,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 12:03:12,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-08-30 12:03:13,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 474 [2023-08-30 12:03:13,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 60 transitions, 289 flow. Second operand has 14 states, 14 states have (on average 193.28571428571428) internal successors, (2706), 14 states have internal predecessors, (2706), 0 states have call successors, (0), 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 12:03:13,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:13,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 474 [2023-08-30 12:03:13,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:14,633 INFO L130 PetriNetUnfolder]: 11595/15542 cut-off events. [2023-08-30 12:03:14,633 INFO L131 PetriNetUnfolder]: For 2098/2098 co-relation queries the response was YES. [2023-08-30 12:03:14,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34068 conditions, 15542 events. 11595/15542 cut-off events. For 2098/2098 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 84189 event pairs, 6603 based on Foata normal form. 516/8467 useless extension candidates. Maximal degree in co-relation 34052. Up to 8568 conditions per place. [2023-08-30 12:03:14,844 INFO L137 encePairwiseOnDemand]: 464/474 looper letters, 113 selfloop transitions, 27 changer transitions 0/143 dead transitions. [2023-08-30 12:03:14,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 143 transitions, 812 flow [2023-08-30 12:03:14,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 12:03:14,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 12:03:14,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2050 transitions. [2023-08-30 12:03:14,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43248945147679324 [2023-08-30 12:03:14,850 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2050 transitions. [2023-08-30 12:03:14,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2050 transitions. [2023-08-30 12:03:14,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:14,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2050 transitions. [2023-08-30 12:03:14,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 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 12:03:14,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 474.0) internal successors, (5214), 11 states have internal predecessors, (5214), 0 states have call successors, (0), 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 12:03:14,863 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 474.0) internal successors, (5214), 11 states have internal predecessors, (5214), 0 states have call successors, (0), 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 12:03:14,863 INFO L175 Difference]: Start difference. First operand has 52 places, 60 transitions, 289 flow. Second operand 10 states and 2050 transitions. [2023-08-30 12:03:14,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 143 transitions, 812 flow [2023-08-30 12:03:14,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 143 transitions, 807 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:03:14,867 INFO L231 Difference]: Finished difference. Result has 64 places, 67 transitions, 419 flow [2023-08-30 12:03:14,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=419, PETRI_PLACES=64, PETRI_TRANSITIONS=67} [2023-08-30 12:03:14,868 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2023-08-30 12:03:14,868 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 67 transitions, 419 flow [2023-08-30 12:03:14,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 193.28571428571428) internal successors, (2706), 14 states have internal predecessors, (2706), 0 states have call successors, (0), 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 12:03:14,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:14,870 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-30 12:03:14,880 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 12:03:15,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:15,076 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:03:15,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:15,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1449440266, now seen corresponding path program 2 times [2023-08-30 12:03:15,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:15,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101006274] [2023-08-30 12:03:15,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:15,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 12:03:15,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:15,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101006274] [2023-08-30 12:03:15,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101006274] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:15,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596759304] [2023-08-30 12:03:15,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:03:15,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:15,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:15,197 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 12:03:15,200 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 12:03:15,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 12:03:15,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:03:15,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:03:15,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:15,301 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 12:03:15,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:03:15,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596759304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:03:15,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:03:15,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-30 12:03:15,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889223366] [2023-08-30 12:03:15,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:03:15,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:03:15,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:15,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:03:15,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 12:03:15,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 474 [2023-08-30 12:03:15,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 67 transitions, 419 flow. Second operand has 4 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 12:03:15,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:15,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 474 [2023-08-30 12:03:15,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:16,183 INFO L130 PetriNetUnfolder]: 10170/13707 cut-off events. [2023-08-30 12:03:16,183 INFO L131 PetriNetUnfolder]: For 5313/5313 co-relation queries the response was YES. [2023-08-30 12:03:16,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29127 conditions, 13707 events. 10170/13707 cut-off events. For 5313/5313 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 73969 event pairs, 5802 based on Foata normal form. 773/7364 useless extension candidates. Maximal degree in co-relation 29106. Up to 13539 conditions per place. [2023-08-30 12:03:16,220 INFO L137 encePairwiseOnDemand]: 470/474 looper letters, 60 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-08-30 12:03:16,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 507 flow [2023-08-30 12:03:16,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:03:16,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:03:16,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-08-30 12:03:16,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542897327707454 [2023-08-30 12:03:16,222 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-08-30 12:03:16,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-08-30 12:03:16,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:16,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-08-30 12:03:16,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 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 12:03:16,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 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 12:03:16,229 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 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 12:03:16,229 INFO L175 Difference]: Start difference. First operand has 64 places, 67 transitions, 419 flow. Second operand 3 states and 646 transitions. [2023-08-30 12:03:16,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 507 flow [2023-08-30 12:03:16,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 64 transitions, 415 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-08-30 12:03:16,231 INFO L231 Difference]: Finished difference. Result has 53 places, 64 transitions, 295 flow [2023-08-30 12:03:16,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=53, PETRI_TRANSITIONS=64} [2023-08-30 12:03:16,232 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2023-08-30 12:03:16,232 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 64 transitions, 295 flow [2023-08-30 12:03:16,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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 12:03:16,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:16,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:16,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 12:03:16,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:16,438 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:03:16,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:16,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1491304546, now seen corresponding path program 1 times [2023-08-30 12:03:16,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:16,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630942654] [2023-08-30 12:03:16,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:16,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:16,473 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 12:03:16,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:16,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630942654] [2023-08-30 12:03:16,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630942654] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:03:16,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:03:16,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:03:16,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844776121] [2023-08-30 12:03:16,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:03:16,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:03:16,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:16,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:03:16,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:03:16,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 474 [2023-08-30 12:03:16,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:16,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:16,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 474 [2023-08-30 12:03:16,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:17,403 INFO L130 PetriNetUnfolder]: 13770/19083 cut-off events. [2023-08-30 12:03:17,403 INFO L131 PetriNetUnfolder]: For 1320/1320 co-relation queries the response was YES. [2023-08-30 12:03:17,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40838 conditions, 19083 events. 13770/19083 cut-off events. For 1320/1320 co-relation queries the response was YES. Maximal size of possible extension queue 843. Compared 109838 event pairs, 5406 based on Foata normal form. 0/10149 useless extension candidates. Maximal degree in co-relation 40823. Up to 12490 conditions per place. [2023-08-30 12:03:17,496 INFO L137 encePairwiseOnDemand]: 471/474 looper letters, 81 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-08-30 12:03:17,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 85 transitions, 515 flow [2023-08-30 12:03:17,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:03:17,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:03:17,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2023-08-30 12:03:17,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.480309423347398 [2023-08-30 12:03:17,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2023-08-30 12:03:17,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2023-08-30 12:03:17,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:17,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2023-08-30 12:03:17,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 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 12:03:17,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 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 12:03:17,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 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 12:03:17,503 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 295 flow. Second operand 3 states and 683 transitions. [2023-08-30 12:03:17,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 85 transitions, 515 flow [2023-08-30 12:03:17,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 85 transitions, 514 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:03:17,506 INFO L231 Difference]: Finished difference. Result has 55 places, 65 transitions, 306 flow [2023-08-30 12:03:17,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=55, PETRI_TRANSITIONS=65} [2023-08-30 12:03:17,507 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2023-08-30 12:03:17,507 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 65 transitions, 306 flow [2023-08-30 12:03:17,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:17,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:17,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:17,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 12:03:17,508 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:03:17,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:17,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1014205661, now seen corresponding path program 1 times [2023-08-30 12:03:17,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:17,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896685176] [2023-08-30 12:03:17,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:17,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:17,563 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 12:03:17,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:17,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896685176] [2023-08-30 12:03:17,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896685176] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:17,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236257556] [2023-08-30 12:03:17,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:17,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:17,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:17,565 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 12:03:17,566 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 12:03:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:17,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:03:17,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:17,688 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 12:03:17,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:03:17,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236257556] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:03:17,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:03:17,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 12:03:17,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535370651] [2023-08-30 12:03:17,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:03:17,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:03:17,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:17,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:03:17,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:03:17,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 474 [2023-08-30 12:03:17,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 65 transitions, 306 flow. Second operand has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 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 12:03:17,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:17,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 474 [2023-08-30 12:03:17,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:18,685 INFO L130 PetriNetUnfolder]: 12052/16933 cut-off events. [2023-08-30 12:03:18,685 INFO L131 PetriNetUnfolder]: For 4607/4607 co-relation queries the response was YES. [2023-08-30 12:03:18,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39563 conditions, 16933 events. 12052/16933 cut-off events. For 4607/4607 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 97807 event pairs, 7858 based on Foata normal form. 136/10714 useless extension candidates. Maximal degree in co-relation 39547. Up to 15288 conditions per place. [2023-08-30 12:03:18,775 INFO L137 encePairwiseOnDemand]: 465/474 looper letters, 84 selfloop transitions, 21 changer transitions 0/107 dead transitions. [2023-08-30 12:03:18,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 107 transitions, 634 flow [2023-08-30 12:03:18,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:03:18,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:03:18,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1055 transitions. [2023-08-30 12:03:18,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451476793248945 [2023-08-30 12:03:18,778 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1055 transitions. [2023-08-30 12:03:18,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1055 transitions. [2023-08-30 12:03:18,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:18,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1055 transitions. [2023-08-30 12:03:18,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 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 12:03:18,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 474.0) internal successors, (2844), 6 states have internal predecessors, (2844), 0 states have call successors, (0), 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 12:03:18,785 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 474.0) internal successors, (2844), 6 states have internal predecessors, (2844), 0 states have call successors, (0), 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 12:03:18,785 INFO L175 Difference]: Start difference. First operand has 55 places, 65 transitions, 306 flow. Second operand 5 states and 1055 transitions. [2023-08-30 12:03:18,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 107 transitions, 634 flow [2023-08-30 12:03:18,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 107 transitions, 631 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:03:18,795 INFO L231 Difference]: Finished difference. Result has 60 places, 66 transitions, 361 flow [2023-08-30 12:03:18,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=60, PETRI_TRANSITIONS=66} [2023-08-30 12:03:18,795 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2023-08-30 12:03:18,796 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 66 transitions, 361 flow [2023-08-30 12:03:18,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 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 12:03:18,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:18,796 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:18,805 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 12:03:19,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 12:03:19,003 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:03:19,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:19,003 INFO L85 PathProgramCache]: Analyzing trace with hash 790168321, now seen corresponding path program 1 times [2023-08-30 12:03:19,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:19,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097772895] [2023-08-30 12:03:19,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:19,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:19,060 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 12:03:19,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:19,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097772895] [2023-08-30 12:03:19,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097772895] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:19,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286500558] [2023-08-30 12:03:19,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:19,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:19,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:19,063 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 12:03:19,097 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 12:03:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:19,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:03:19,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:19,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:03:19,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:03:19,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286500558] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:03:19,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:03:19,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 12:03:19,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288680345] [2023-08-30 12:03:19,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:03:19,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:03:19,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:19,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:03:19,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:03:19,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 474 [2023-08-30 12:03:19,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 66 transitions, 361 flow. Second operand has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 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 12:03:19,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:19,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 474 [2023-08-30 12:03:19,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:20,116 INFO L130 PetriNetUnfolder]: 10424/14668 cut-off events. [2023-08-30 12:03:20,117 INFO L131 PetriNetUnfolder]: For 3966/4763 co-relation queries the response was YES. [2023-08-30 12:03:20,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34431 conditions, 14668 events. 10424/14668 cut-off events. For 3966/4763 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 86519 event pairs, 7067 based on Foata normal form. 797/10006 useless extension candidates. Maximal degree in co-relation 34412. Up to 14143 conditions per place. [2023-08-30 12:03:20,184 INFO L137 encePairwiseOnDemand]: 465/474 looper letters, 72 selfloop transitions, 21 changer transitions 2/98 dead transitions. [2023-08-30 12:03:20,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 98 transitions, 632 flow [2023-08-30 12:03:20,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:03:20,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:03:20,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1047 transitions. [2023-08-30 12:03:20,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417721518987342 [2023-08-30 12:03:20,187 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1047 transitions. [2023-08-30 12:03:20,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1047 transitions. [2023-08-30 12:03:20,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:20,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1047 transitions. [2023-08-30 12:03:20,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.4) internal successors, (1047), 5 states have internal predecessors, (1047), 0 states have call successors, (0), 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 12:03:20,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 474.0) internal successors, (2844), 6 states have internal predecessors, (2844), 0 states have call successors, (0), 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 12:03:20,193 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 474.0) internal successors, (2844), 6 states have internal predecessors, (2844), 0 states have call successors, (0), 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 12:03:20,194 INFO L175 Difference]: Start difference. First operand has 60 places, 66 transitions, 361 flow. Second operand 5 states and 1047 transitions. [2023-08-30 12:03:20,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 98 transitions, 632 flow [2023-08-30 12:03:20,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 98 transitions, 597 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:03:20,200 INFO L231 Difference]: Finished difference. Result has 64 places, 67 transitions, 383 flow [2023-08-30 12:03:20,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=64, PETRI_TRANSITIONS=67} [2023-08-30 12:03:20,201 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2023-08-30 12:03:20,201 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 67 transitions, 383 flow [2023-08-30 12:03:20,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 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 12:03:20,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:20,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:20,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 12:03:20,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:20,407 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:03:20,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:20,408 INFO L85 PathProgramCache]: Analyzing trace with hash -91373954, now seen corresponding path program 1 times [2023-08-30 12:03:20,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:20,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433713374] [2023-08-30 12:03:20,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:20,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:20,454 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 12:03:20,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:20,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433713374] [2023-08-30 12:03:20,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433713374] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:03:20,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:03:20,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:03:20,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266829438] [2023-08-30 12:03:20,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:03:20,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:03:20,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:20,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:03:20,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:03:20,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 474 [2023-08-30 12:03:20,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 67 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 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 12:03:20,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:20,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 474 [2023-08-30 12:03:20,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:21,670 INFO L130 PetriNetUnfolder]: 13356/18884 cut-off events. [2023-08-30 12:03:21,670 INFO L131 PetriNetUnfolder]: For 6159/7261 co-relation queries the response was YES. [2023-08-30 12:03:21,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45358 conditions, 18884 events. 13356/18884 cut-off events. For 6159/7261 co-relation queries the response was YES. Maximal size of possible extension queue 859. Compared 116520 event pairs, 6862 based on Foata normal form. 1102/14621 useless extension candidates. Maximal degree in co-relation 45337. Up to 12866 conditions per place. [2023-08-30 12:03:21,763 INFO L137 encePairwiseOnDemand]: 470/474 looper letters, 80 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-30 12:03:21,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 86 transitions, 605 flow [2023-08-30 12:03:21,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:03:21,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:03:21,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 681 transitions. [2023-08-30 12:03:21,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47890295358649787 [2023-08-30 12:03:21,765 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 681 transitions. [2023-08-30 12:03:21,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 681 transitions. [2023-08-30 12:03:21,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:21,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 681 transitions. [2023-08-30 12:03:21,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 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 12:03:21,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 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 12:03:21,769 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 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 12:03:21,769 INFO L175 Difference]: Start difference. First operand has 64 places, 67 transitions, 383 flow. Second operand 3 states and 681 transitions. [2023-08-30 12:03:21,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 86 transitions, 605 flow [2023-08-30 12:03:21,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 86 transitions, 570 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:03:21,774 INFO L231 Difference]: Finished difference. Result has 65 places, 68 transitions, 362 flow [2023-08-30 12:03:21,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=65, PETRI_TRANSITIONS=68} [2023-08-30 12:03:21,775 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2023-08-30 12:03:21,775 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 68 transitions, 362 flow [2023-08-30 12:03:21,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 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 12:03:21,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:21,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:21,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 12:03:21,776 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:03:21,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:21,777 INFO L85 PathProgramCache]: Analyzing trace with hash -337012038, now seen corresponding path program 1 times [2023-08-30 12:03:21,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:21,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672669264] [2023-08-30 12:03:21,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:21,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:21,830 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 12:03:21,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:21,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672669264] [2023-08-30 12:03:21,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672669264] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:21,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476965579] [2023-08-30 12:03:21,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:21,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:21,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:21,834 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 12:03:21,837 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 12:03:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:21,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 12:03:21,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:21,954 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 12:03:21,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:03:21,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476965579] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:03:21,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:03:21,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 12:03:21,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701711030] [2023-08-30 12:03:21,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:03:21,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:03:21,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:21,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:03:21,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:03:21,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 474 [2023-08-30 12:03:21,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 68 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 213.25) internal successors, (853), 4 states have internal predecessors, (853), 0 states have call successors, (0), 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 12:03:21,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:21,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 474 [2023-08-30 12:03:21,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:23,279 INFO L130 PetriNetUnfolder]: 14518/20087 cut-off events. [2023-08-30 12:03:23,279 INFO L131 PetriNetUnfolder]: For 6684/6743 co-relation queries the response was YES. [2023-08-30 12:03:23,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51643 conditions, 20087 events. 14518/20087 cut-off events. For 6684/6743 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 119903 event pairs, 1252 based on Foata normal form. 59/14669 useless extension candidates. Maximal degree in co-relation 51622. Up to 8820 conditions per place. [2023-08-30 12:03:23,412 INFO L137 encePairwiseOnDemand]: 471/474 looper letters, 100 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2023-08-30 12:03:23,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 106 transitions, 687 flow [2023-08-30 12:03:23,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:03:23,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:03:23,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 908 transitions. [2023-08-30 12:03:23,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47890295358649787 [2023-08-30 12:03:23,415 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 908 transitions. [2023-08-30 12:03:23,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 908 transitions. [2023-08-30 12:03:23,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:23,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 908 transitions. [2023-08-30 12:03:23,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 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 12:03:23,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 474.0) internal successors, (2370), 5 states have internal predecessors, (2370), 0 states have call successors, (0), 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 12:03:23,421 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 474.0) internal successors, (2370), 5 states have internal predecessors, (2370), 0 states have call successors, (0), 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 12:03:23,421 INFO L175 Difference]: Start difference. First operand has 65 places, 68 transitions, 362 flow. Second operand 4 states and 908 transitions. [2023-08-30 12:03:23,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 106 transitions, 687 flow [2023-08-30 12:03:23,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 106 transitions, 683 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:03:23,458 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 362 flow [2023-08-30 12:03:23,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=362, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2023-08-30 12:03:23,458 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2023-08-30 12:03:23,459 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 362 flow [2023-08-30 12:03:23,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.25) internal successors, (853), 4 states have internal predecessors, (853), 0 states have call successors, (0), 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 12:03:23,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:23,459 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:23,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 12:03:23,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:23,660 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:03:23,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:23,660 INFO L85 PathProgramCache]: Analyzing trace with hash -561049378, now seen corresponding path program 1 times [2023-08-30 12:03:23,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:23,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390974769] [2023-08-30 12:03:23,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:23,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:23,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 12:03:23,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:23,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390974769] [2023-08-30 12:03:23,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390974769] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:23,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971505464] [2023-08-30 12:03:23,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:23,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:23,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:23,716 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 12:03:23,728 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 12:03:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:23,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 12:03:23,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:23,881 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:03:23,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:03:23,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:03:23,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971505464] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:03:23,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:03:23,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-08-30 12:03:23,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249943528] [2023-08-30 12:03:23,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:03:23,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 12:03:23,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:23,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 12:03:23,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:03:24,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 474 [2023-08-30 12:03:24,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 362 flow. Second operand has 13 states, 13 states have (on average 190.53846153846155) internal successors, (2477), 13 states have internal predecessors, (2477), 0 states have call successors, (0), 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 12:03:24,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:24,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 474 [2023-08-30 12:03:24,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:25,839 INFO L130 PetriNetUnfolder]: 14265/19821 cut-off events. [2023-08-30 12:03:25,839 INFO L131 PetriNetUnfolder]: For 11139/12465 co-relation queries the response was YES. [2023-08-30 12:03:25,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50634 conditions, 19821 events. 14265/19821 cut-off events. For 11139/12465 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 120596 event pairs, 1963 based on Foata normal form. 1490/16177 useless extension candidates. Maximal degree in co-relation 50613. Up to 3631 conditions per place. [2023-08-30 12:03:25,949 INFO L137 encePairwiseOnDemand]: 461/474 looper letters, 229 selfloop transitions, 34 changer transitions 10/276 dead transitions. [2023-08-30 12:03:25,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 276 transitions, 1564 flow [2023-08-30 12:03:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 12:03:25,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 12:03:25,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3248 transitions. [2023-08-30 12:03:25,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4282700421940928 [2023-08-30 12:03:25,956 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3248 transitions. [2023-08-30 12:03:25,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3248 transitions. [2023-08-30 12:03:25,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:25,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3248 transitions. [2023-08-30 12:03:25,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 0 states have call successors, (0), 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 12:03:25,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 474.0) internal successors, (8058), 17 states have internal predecessors, (8058), 0 states have call successors, (0), 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 12:03:25,973 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 474.0) internal successors, (8058), 17 states have internal predecessors, (8058), 0 states have call successors, (0), 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 12:03:25,974 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 362 flow. Second operand 16 states and 3248 transitions. [2023-08-30 12:03:25,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 276 transitions, 1564 flow [2023-08-30 12:03:25,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 276 transitions, 1550 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:03:25,991 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 482 flow [2023-08-30 12:03:25,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=482, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2023-08-30 12:03:25,992 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2023-08-30 12:03:25,992 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 482 flow [2023-08-30 12:03:25,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 190.53846153846155) internal successors, (2477), 13 states have internal predecessors, (2477), 0 states have call successors, (0), 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 12:03:25,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:25,993 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:26,002 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 12:03:26,197 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,SelfDestructingSolverStorable13 [2023-08-30 12:03:26,198 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:03:26,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:26,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1910925344, now seen corresponding path program 1 times [2023-08-30 12:03:26,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:26,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368408455] [2023-08-30 12:03:26,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:26,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:26,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:03:26,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:26,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368408455] [2023-08-30 12:03:26,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368408455] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:03:26,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:03:26,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:03:26,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883870899] [2023-08-30 12:03:26,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:03:26,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:03:26,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:26,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:03:26,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:03:26,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 474 [2023-08-30 12:03:26,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 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 12:03:26,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:26,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 474 [2023-08-30 12:03:26,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:27,247 INFO L130 PetriNetUnfolder]: 11024/15628 cut-off events. [2023-08-30 12:03:27,247 INFO L131 PetriNetUnfolder]: For 13661/14965 co-relation queries the response was YES. [2023-08-30 12:03:27,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44299 conditions, 15628 events. 11024/15628 cut-off events. For 13661/14965 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 96577 event pairs, 1128 based on Foata normal form. 1304/14099 useless extension candidates. Maximal degree in co-relation 44274. Up to 13176 conditions per place. [2023-08-30 12:03:27,336 INFO L137 encePairwiseOnDemand]: 472/474 looper letters, 91 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2023-08-30 12:03:27,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 97 transitions, 767 flow [2023-08-30 12:03:27,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:03:27,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:03:27,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2023-08-30 12:03:27,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732770745428973 [2023-08-30 12:03:27,338 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 673 transitions. [2023-08-30 12:03:27,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 673 transitions. [2023-08-30 12:03:27,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:27,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 673 transitions. [2023-08-30 12:03:27,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 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 12:03:27,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 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 12:03:27,341 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 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 12:03:27,342 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 482 flow. Second operand 3 states and 673 transitions. [2023-08-30 12:03:27,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 97 transitions, 767 flow [2023-08-30 12:03:27,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 719 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-30 12:03:27,358 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 434 flow [2023-08-30 12:03:27,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=434, PETRI_PLACES=78, PETRI_TRANSITIONS=75} [2023-08-30 12:03:27,359 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 32 predicate places. [2023-08-30 12:03:27,359 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 434 flow [2023-08-30 12:03:27,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 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 12:03:27,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:27,359 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:27,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 12:03:27,360 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:03:27,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:27,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1910925315, now seen corresponding path program 1 times [2023-08-30 12:03:27,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:27,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129933111] [2023-08-30 12:03:27,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:27,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:27,426 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 12:03:27,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:27,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129933111] [2023-08-30 12:03:27,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129933111] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:27,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113606795] [2023-08-30 12:03:27,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:27,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:27,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:27,433 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 12:03:27,459 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 12:03:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:27,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:03:27,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:27,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:03:27,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:03:27,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113606795] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:03:27,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:03:27,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 12:03:27,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124993970] [2023-08-30 12:03:27,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:03:27,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:03:27,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:27,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:03:27,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:03:27,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 474 [2023-08-30 12:03:27,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 434 flow. Second operand has 5 states, 5 states have (on average 197.8) internal successors, (989), 5 states have internal predecessors, (989), 0 states have call successors, (0), 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 12:03:27,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:27,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 474 [2023-08-30 12:03:27,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:28,656 INFO L130 PetriNetUnfolder]: 10882/15416 cut-off events. [2023-08-30 12:03:28,657 INFO L131 PetriNetUnfolder]: For 12471/13710 co-relation queries the response was YES. [2023-08-30 12:03:28,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44299 conditions, 15416 events. 10882/15416 cut-off events. For 12471/13710 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 91197 event pairs, 7904 based on Foata normal form. 1239/13922 useless extension candidates. Maximal degree in co-relation 44275. Up to 15266 conditions per place. [2023-08-30 12:03:28,715 INFO L137 encePairwiseOnDemand]: 464/474 looper letters, 48 selfloop transitions, 15 changer transitions 30/96 dead transitions. [2023-08-30 12:03:28,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 96 transitions, 678 flow [2023-08-30 12:03:28,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:03:28,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:03:28,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1036 transitions. [2023-08-30 12:03:28,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4371308016877637 [2023-08-30 12:03:28,717 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1036 transitions. [2023-08-30 12:03:28,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1036 transitions. [2023-08-30 12:03:28,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:28,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1036 transitions. [2023-08-30 12:03:28,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 207.2) internal successors, (1036), 5 states have internal predecessors, (1036), 0 states have call successors, (0), 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 12:03:28,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 474.0) internal successors, (2844), 6 states have internal predecessors, (2844), 0 states have call successors, (0), 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 12:03:28,723 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 474.0) internal successors, (2844), 6 states have internal predecessors, (2844), 0 states have call successors, (0), 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 12:03:28,723 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 434 flow. Second operand 5 states and 1036 transitions. [2023-08-30 12:03:28,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 96 transitions, 678 flow [2023-08-30 12:03:28,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 96 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:03:28,738 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 399 flow [2023-08-30 12:03:28,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2023-08-30 12:03:28,738 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2023-08-30 12:03:28,738 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 399 flow [2023-08-30 12:03:28,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 197.8) internal successors, (989), 5 states have internal predecessors, (989), 0 states have call successors, (0), 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 12:03:28,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:28,739 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:28,748 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 12:03:28,944 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,SelfDestructingSolverStorable15 [2023-08-30 12:03:28,945 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:03:28,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:28,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1963386740, now seen corresponding path program 1 times [2023-08-30 12:03:28,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:28,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491479982] [2023-08-30 12:03:28,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:28,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:28,986 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-30 12:03:28,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:28,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491479982] [2023-08-30 12:03:28,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491479982] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:03:28,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:03:28,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:03:28,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25277372] [2023-08-30 12:03:28,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:03:28,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:03:28,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:28,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:03:28,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:03:28,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 474 [2023-08-30 12:03:28,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 399 flow. Second operand has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 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 12:03:28,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:28,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 474 [2023-08-30 12:03:28,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:30,217 INFO L130 PetriNetUnfolder]: 11919/16526 cut-off events. [2023-08-30 12:03:30,217 INFO L131 PetriNetUnfolder]: For 10492/11498 co-relation queries the response was YES. [2023-08-30 12:03:30,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48167 conditions, 16526 events. 11919/16526 cut-off events. For 10492/11498 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 98727 event pairs, 500 based on Foata normal form. 1450/15710 useless extension candidates. Maximal degree in co-relation 48140. Up to 15514 conditions per place. [2023-08-30 12:03:30,422 INFO L137 encePairwiseOnDemand]: 472/474 looper letters, 74 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-08-30 12:03:30,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 78 transitions, 585 flow [2023-08-30 12:03:30,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:03:30,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:03:30,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 672 transitions. [2023-08-30 12:03:30,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47257383966244726 [2023-08-30 12:03:30,425 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 672 transitions. [2023-08-30 12:03:30,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 672 transitions. [2023-08-30 12:03:30,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:30,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 672 transitions. [2023-08-30 12:03:30,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:30,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 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 12:03:30,430 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 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 12:03:30,430 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 399 flow. Second operand 3 states and 672 transitions. [2023-08-30 12:03:30,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 78 transitions, 585 flow [2023-08-30 12:03:30,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 78 transitions, 507 flow, removed 10 selfloop flow, removed 9 redundant places. [2023-08-30 12:03:30,514 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 317 flow [2023-08-30 12:03:30,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-08-30 12:03:30,515 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2023-08-30 12:03:30,515 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 317 flow [2023-08-30 12:03:30,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 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 12:03:30,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:30,516 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:30,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 12:03:30,516 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:03:30,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:30,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1441492826, now seen corresponding path program 1 times [2023-08-30 12:03:30,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:30,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981236428] [2023-08-30 12:03:30,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:30,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:30,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 12:03:30,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:30,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981236428] [2023-08-30 12:03:30,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981236428] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:30,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209525125] [2023-08-30 12:03:30,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:30,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:30,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:30,615 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 12:03:30,617 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 12:03:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:30,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 12:03:30,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:30,817 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:03:30,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:03:30,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:03:30,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209525125] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:03:30,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:03:30,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-08-30 12:03:30,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250146156] [2023-08-30 12:03:30,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:03:30,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 12:03:30,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:30,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 12:03:30,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:03:32,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 474 [2023-08-30 12:03:32,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 317 flow. Second operand has 13 states, 13 states have (on average 191.15384615384616) internal successors, (2485), 13 states have internal predecessors, (2485), 0 states have call successors, (0), 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 12:03:32,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:32,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 474 [2023-08-30 12:03:32,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:33,571 INFO L130 PetriNetUnfolder]: 11921/16961 cut-off events. [2023-08-30 12:03:33,572 INFO L131 PetriNetUnfolder]: For 7330/8707 co-relation queries the response was YES. [2023-08-30 12:03:33,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45151 conditions, 16961 events. 11921/16961 cut-off events. For 7330/8707 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 103534 event pairs, 3067 based on Foata normal form. 1377/15342 useless extension candidates. Maximal degree in co-relation 45132. Up to 5719 conditions per place. [2023-08-30 12:03:33,768 INFO L137 encePairwiseOnDemand]: 461/474 looper letters, 98 selfloop transitions, 19 changer transitions 88/207 dead transitions. [2023-08-30 12:03:33,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 207 transitions, 1237 flow [2023-08-30 12:03:33,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 12:03:33,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 12:03:33,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2791 transitions. [2023-08-30 12:03:33,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4205846895720313 [2023-08-30 12:03:33,774 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2791 transitions. [2023-08-30 12:03:33,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2791 transitions. [2023-08-30 12:03:33,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:33,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2791 transitions. [2023-08-30 12:03:33,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 199.35714285714286) internal successors, (2791), 14 states have internal predecessors, (2791), 0 states have call successors, (0), 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 12:03:33,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 474.0) internal successors, (7110), 15 states have internal predecessors, (7110), 0 states have call successors, (0), 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 12:03:33,919 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 474.0) internal successors, (7110), 15 states have internal predecessors, (7110), 0 states have call successors, (0), 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 12:03:33,920 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 317 flow. Second operand 14 states and 2791 transitions. [2023-08-30 12:03:33,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 207 transitions, 1237 flow [2023-08-30 12:03:33,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 207 transitions, 1235 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:03:33,935 INFO L231 Difference]: Finished difference. Result has 79 places, 56 transitions, 308 flow [2023-08-30 12:03:33,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=308, PETRI_PLACES=79, PETRI_TRANSITIONS=56} [2023-08-30 12:03:33,936 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2023-08-30 12:03:33,936 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 56 transitions, 308 flow [2023-08-30 12:03:33,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 191.15384615384616) internal successors, (2485), 13 states have internal predecessors, (2485), 0 states have call successors, (0), 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 12:03:33,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:33,937 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:33,945 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 12:03:34,143 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,SelfDestructingSolverStorable17 [2023-08-30 12:03:34,143 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:03:34,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:34,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1323946515, now seen corresponding path program 2 times [2023-08-30 12:03:34,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:34,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858868358] [2023-08-30 12:03:34,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:34,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:34,367 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 12:03:34,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:34,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858868358] [2023-08-30 12:03:34,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858868358] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:34,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650264794] [2023-08-30 12:03:34,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:03:34,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:34,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:34,369 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 12:03:34,372 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 12:03:34,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 12:03:34,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:03:34,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:03:34,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:34,533 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 12:03:34,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:03:34,566 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 12:03:34,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650264794] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:03:34,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:03:34,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2023-08-30 12:03:34,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834278007] [2023-08-30 12:03:34,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:03:34,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 12:03:34,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:34,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 12:03:34,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 12:03:34,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 474 [2023-08-30 12:03:34,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 56 transitions, 308 flow. Second operand has 10 states, 10 states have (on average 190.9) internal successors, (1909), 10 states have internal predecessors, (1909), 0 states have call successors, (0), 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 12:03:34,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:34,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 474 [2023-08-30 12:03:34,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:37,163 INFO L130 PetriNetUnfolder]: 19640/27213 cut-off events. [2023-08-30 12:03:37,164 INFO L131 PetriNetUnfolder]: For 18365/20603 co-relation queries the response was YES. [2023-08-30 12:03:37,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81670 conditions, 27213 events. 19640/27213 cut-off events. For 18365/20603 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 166471 event pairs, 4246 based on Foata normal form. 2238/26275 useless extension candidates. Maximal degree in co-relation 81648. Up to 7278 conditions per place. [2023-08-30 12:03:37,513 INFO L137 encePairwiseOnDemand]: 462/474 looper letters, 175 selfloop transitions, 36 changer transitions 27/240 dead transitions. [2023-08-30 12:03:37,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 240 transitions, 1559 flow [2023-08-30 12:03:37,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 12:03:37,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 12:03:37,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3189 transitions. [2023-08-30 12:03:37,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42049050632911394 [2023-08-30 12:03:37,520 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3189 transitions. [2023-08-30 12:03:37,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3189 transitions. [2023-08-30 12:03:37,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:37,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3189 transitions. [2023-08-30 12:03:37,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 199.3125) internal successors, (3189), 16 states have internal predecessors, (3189), 0 states have call successors, (0), 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 12:03:37,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 474.0) internal successors, (8058), 17 states have internal predecessors, (8058), 0 states have call successors, (0), 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 12:03:37,535 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 474.0) internal successors, (8058), 17 states have internal predecessors, (8058), 0 states have call successors, (0), 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 12:03:37,535 INFO L175 Difference]: Start difference. First operand has 79 places, 56 transitions, 308 flow. Second operand 16 states and 3189 transitions. [2023-08-30 12:03:37,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 240 transitions, 1559 flow [2023-08-30 12:03:37,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 240 transitions, 1415 flow, removed 33 selfloop flow, removed 8 redundant places. [2023-08-30 12:03:37,629 INFO L231 Difference]: Finished difference. Result has 78 places, 70 transitions, 442 flow [2023-08-30 12:03:37,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=442, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2023-08-30 12:03:37,630 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 32 predicate places. [2023-08-30 12:03:37,630 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 442 flow [2023-08-30 12:03:37,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 190.9) internal successors, (1909), 10 states have internal predecessors, (1909), 0 states have call successors, (0), 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 12:03:37,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:37,631 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:37,640 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 12:03:37,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:37,838 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:03:37,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:37,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1421213311, now seen corresponding path program 2 times [2023-08-30 12:03:37,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:37,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698329460] [2023-08-30 12:03:37,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:37,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:38,077 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 12:03:38,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:38,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698329460] [2023-08-30 12:03:38,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698329460] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:38,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420138033] [2023-08-30 12:03:38,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:03:38,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:38,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:38,080 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 12:03:38,083 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 12:03:38,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 12:03:38,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:03:38,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:03:38,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:38,237 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 12:03:38,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:03:38,274 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 12:03:38,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420138033] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:03:38,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:03:38,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2023-08-30 12:03:38,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95194411] [2023-08-30 12:03:38,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:03:38,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 12:03:38,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:38,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 12:03:38,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 12:03:38,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 474 [2023-08-30 12:03:38,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 442 flow. Second operand has 10 states, 10 states have (on average 191.7) internal successors, (1917), 10 states have internal predecessors, (1917), 0 states have call successors, (0), 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 12:03:38,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:38,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 474 [2023-08-30 12:03:38,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:40,281 INFO L130 PetriNetUnfolder]: 14886/20518 cut-off events. [2023-08-30 12:03:40,281 INFO L131 PetriNetUnfolder]: For 20345/22234 co-relation queries the response was YES. [2023-08-30 12:03:40,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59366 conditions, 20518 events. 14886/20518 cut-off events. For 20345/22234 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 118687 event pairs, 1815 based on Foata normal form. 1889/19693 useless extension candidates. Maximal degree in co-relation 59343. Up to 7884 conditions per place. [2023-08-30 12:03:40,442 INFO L137 encePairwiseOnDemand]: 462/474 looper letters, 0 selfloop transitions, 0 changer transitions 183/183 dead transitions. [2023-08-30 12:03:40,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 183 transitions, 1302 flow [2023-08-30 12:03:40,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 12:03:40,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 12:03:40,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2759 transitions. [2023-08-30 12:03:40,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41576250753465943 [2023-08-30 12:03:40,446 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2759 transitions. [2023-08-30 12:03:40,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2759 transitions. [2023-08-30 12:03:40,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:40,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2759 transitions. [2023-08-30 12:03:40,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 197.07142857142858) internal successors, (2759), 14 states have internal predecessors, (2759), 0 states have call successors, (0), 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 12:03:40,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 474.0) internal successors, (7110), 15 states have internal predecessors, (7110), 0 states have call successors, (0), 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 12:03:40,458 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 474.0) internal successors, (7110), 15 states have internal predecessors, (7110), 0 states have call successors, (0), 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 12:03:40,458 INFO L175 Difference]: Start difference. First operand has 78 places, 70 transitions, 442 flow. Second operand 14 states and 2759 transitions. [2023-08-30 12:03:40,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 183 transitions, 1302 flow [2023-08-30 12:03:40,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 183 transitions, 1241 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-30 12:03:40,571 INFO L231 Difference]: Finished difference. Result has 82 places, 0 transitions, 0 flow [2023-08-30 12:03:40,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=82, PETRI_TRANSITIONS=0} [2023-08-30 12:03:40,573 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2023-08-30 12:03:40,573 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 0 transitions, 0 flow [2023-08-30 12:03:40,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 191.7) internal successors, (1917), 10 states have internal predecessors, (1917), 0 states have call successors, (0), 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 12:03:40,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 25 remaining) [2023-08-30 12:03:40,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-08-30 12:03:40,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-08-30 12:03:40,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-08-30 12:03:40,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-08-30 12:03:40,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-08-30 12:03:40,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-08-30 12:03:40,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-08-30 12:03:40,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-08-30 12:03:40,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-08-30 12:03:40,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-08-30 12:03:40,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-08-30 12:03:40,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-08-30 12:03:40,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-08-30 12:03:40,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 25 remaining) [2023-08-30 12:03:40,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 25 remaining) [2023-08-30 12:03:40,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 25 remaining) [2023-08-30 12:03:40,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-08-30 12:03:40,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-08-30 12:03:40,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-08-30 12:03:40,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-08-30 12:03:40,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-08-30 12:03:40,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-08-30 12:03:40,582 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-08-30 12:03:40,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-08-30 12:03:40,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-30 12:03:40,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:40,789 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:40,794 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 12:03:40,794 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 12:03:40,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 12:03:40 BasicIcfg [2023-08-30 12:03:40,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 12:03:40,798 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 12:03:40,798 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 12:03:40,798 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 12:03:40,799 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:02:54" (3/4) ... [2023-08-30 12:03:40,801 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 12:03:40,805 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 12:03:40,811 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 12:03:40,811 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 12:03:40,827 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2023-08-30 12:03:40,828 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 12:03:40,828 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 12:03:40,828 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 12:03:40,917 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 12:03:40,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 12:03:40,922 INFO L158 Benchmark]: Toolchain (without parser) took 47241.31ms. Allocated memory was 69.2MB in the beginning and 3.7GB in the end (delta: 3.6GB). Free memory was 38.2MB in the beginning and 2.7GB in the end (delta: -2.7GB). Peak memory consumption was 928.0MB. Max. memory is 16.1GB. [2023-08-30 12:03:40,922 INFO L158 Benchmark]: CDTParser took 1.10ms. Allocated memory is still 69.2MB. Free memory was 46.7MB in the beginning and 46.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:03:40,923 INFO L158 Benchmark]: CACSL2BoogieTranslator took 378.13ms. Allocated memory is still 69.2MB. Free memory was 38.0MB in the beginning and 48.1MB in the end (delta: -10.1MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2023-08-30 12:03:40,923 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.51ms. Allocated memory is still 69.2MB. Free memory was 48.1MB in the beginning and 46.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:03:40,923 INFO L158 Benchmark]: Boogie Preprocessor took 30.30ms. Allocated memory is still 69.2MB. Free memory was 46.0MB in the beginning and 44.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:03:40,924 INFO L158 Benchmark]: RCFGBuilder took 770.83ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 44.2MB in the beginning and 59.9MB in the end (delta: -15.7MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2023-08-30 12:03:40,924 INFO L158 Benchmark]: TraceAbstraction took 45858.19ms. Allocated memory was 90.2MB in the beginning and 3.7GB in the end (delta: 3.6GB). Free memory was 59.5MB in the beginning and 2.7GB in the end (delta: -2.7GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. [2023-08-30 12:03:40,925 INFO L158 Benchmark]: Witness Printer took 119.48ms. Allocated memory is still 3.7GB. Free memory was 2.7GB in the beginning and 2.7GB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-08-30 12:03:40,938 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.10ms. Allocated memory is still 69.2MB. Free memory was 46.7MB in the beginning and 46.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 378.13ms. Allocated memory is still 69.2MB. Free memory was 38.0MB in the beginning and 48.1MB in the end (delta: -10.1MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.51ms. Allocated memory is still 69.2MB. Free memory was 48.1MB in the beginning and 46.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.30ms. Allocated memory is still 69.2MB. Free memory was 46.0MB in the beginning and 44.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 770.83ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 44.2MB in the beginning and 59.9MB in the end (delta: -15.7MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. * TraceAbstraction took 45858.19ms. Allocated memory was 90.2MB in the beginning and 3.7GB in the end (delta: 3.6GB). Free memory was 59.5MB in the beginning and 2.7GB in the end (delta: -2.7GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. * Witness Printer took 119.48ms. Allocated memory is still 3.7GB. Free memory was 2.7GB in the beginning and 2.7GB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.5s, 206 PlacesBefore, 46 PlacesAfterwards, 215 TransitionsBefore, 43 TransitionsAfterwards, 3058 CoEnabledTransitionPairs, 7 FixpointIterations, 132 TrivialSequentialCompositions, 57 ConcurrentSequentialCompositions, 31 TrivialYvCompositions, 6 ConcurrentYvCompositions, 12 ChoiceCompositions, 238 TotalNumberOfCompositions, 5037 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3306, independent: 3203, independent conditional: 0, independent unconditional: 3203, dependent: 103, dependent conditional: 0, dependent unconditional: 103, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1641, independent: 1612, independent conditional: 0, independent unconditional: 1612, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3306, independent: 1591, independent conditional: 0, independent unconditional: 1591, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 1641, unknown conditional: 0, unknown unconditional: 1641] , Statistics on independence cache: Total cache size (in pairs): 120, Positive cache size: 102, Positive conditional cache size: 0, Positive unconditional cache size: 102, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 268 locations, 25 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 45.7s, OverallIterations: 20, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 30.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4922 SdHoareTripleChecker+Valid, 5.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4097 mSDsluCounter, 1550 SdHoareTripleChecker+Invalid, 4.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1306 mSDsCounter, 405 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7169 IncrementalHoareTripleChecker+Invalid, 7574 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 405 mSolverCounterUnsat, 244 mSDtfsCounter, 7169 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 323 GetRequests, 170 SyntacticMatches, 6 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=482occurred in iteration=14, InterpolantAutomatonStates: 127, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 358 NumberOfCodeBlocks, 328 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 401 ConstructedInterpolants, 0 QuantifiedInterpolants, 1127 SizeOfPredicates, 24 NumberOfNonLiveVariables, 2384 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 38 InterpolantComputations, 14 PerfectInterpolantSequences, 181/246 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 12:03:40,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE