./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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-proofs-counter-add-4-semi-Q67.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 ec11f673f0852354e1b011c47ea1690182c02849435cfe6b9232c63dc6ffceb8 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:25:00,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:25:00,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:25:00,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:25:00,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:25:00,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:25:00,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:25:00,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:25:00,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:25:00,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:25:00,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:25:00,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:25:00,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:25:00,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:25:00,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:25:00,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:25:00,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:25:00,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:25:00,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:25:00,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:25:00,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:25:00,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:25:00,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:25:00,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:25:00,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:25:00,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:25:00,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:25:00,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:25:00,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:25:00,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:25:00,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:25:00,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:25:00,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:25:00,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:25:00,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:25:00,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:25:00,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:25:00,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:25:00,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:25:00,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:25:00,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:25:00,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:25:00,797 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:25:00,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:25:00,799 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:25:00,799 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:25:00,800 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:25:00,800 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:25:00,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:25:00,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:25:00,801 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:25:00,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:25:00,802 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:25:00,802 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:25:00,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:25:00,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:25:00,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:25:00,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:25:00,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:25:00,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:25:00,803 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:25:00,803 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:25:00,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:25:00,804 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:25:00,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:25:00,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:25:00,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:25:00,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:25:00,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:25:00,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:25:00,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:25:00,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:25:00,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:25:00,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:25:00,806 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:25:00,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:25:00,806 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:25:00,807 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:25:00,807 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:25:00,807 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec11f673f0852354e1b011c47ea1690182c02849435cfe6b9232c63dc6ffceb8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:25:01,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:25:01,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:25:01,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:25:01,157 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:25:01,160 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:25:01,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-09-01 08:25:02,281 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:25:02,457 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:25:02,458 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-09-01 08:25:02,463 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43afbfb69/c7e5db13bd4343d79906e13eaea3d133/FLAGb08a7f0e4 [2023-09-01 08:25:02,476 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43afbfb69/c7e5db13bd4343d79906e13eaea3d133 [2023-09-01 08:25:02,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:25:02,486 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:25:02,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:25:02,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:25:02,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:25:02,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:25:02" (1/1) ... [2023-09-01 08:25:02,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d82e268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:25:02, skipping insertion in model container [2023-09-01 08:25:02,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:25:02" (1/1) ... [2023-09-01 08:25:02,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:25:02,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:25:02,653 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-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2023-09-01 08:25:02,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:25:02,662 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:25:02,681 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-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2023-09-01 08:25:02,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:25:02,690 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:25:02,691 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:25:02,696 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:25:02,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:25:02 WrapperNode [2023-09-01 08:25:02,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:25:02,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:25:02,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:25:02,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:25:02,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:25:02" (1/1) ... [2023-09-01 08:25:02,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:25:02" (1/1) ... [2023-09-01 08:25:02,744 INFO L138 Inliner]: procedures = 22, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 145 [2023-09-01 08:25:02,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:25:02,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:25:02,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:25:02,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:25:02,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:25:02" (1/1) ... [2023-09-01 08:25:02,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:25:02" (1/1) ... [2023-09-01 08:25:02,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:25:02" (1/1) ... [2023-09-01 08:25:02,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:25:02" (1/1) ... [2023-09-01 08:25:02,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:25:02" (1/1) ... [2023-09-01 08:25:02,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:25:02" (1/1) ... [2023-09-01 08:25:02,765 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:25:02" (1/1) ... [2023-09-01 08:25:02,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:25:02" (1/1) ... [2023-09-01 08:25:02,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:25:02,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:25:02,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:25:02,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:25:02,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:25:02" (1/1) ... [2023-09-01 08:25:02,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:25:02,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:25:02,839 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) [2023-09-01 08:25:02,853 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 [2023-09-01 08:25:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:25:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:25:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:25:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:25:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:25:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:25:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:25:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 08:25:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 08:25:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:25:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:25:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:25:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:25:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:25:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:25:02,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:25:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:25:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:25:02,888 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:25:02,996 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:25:02,998 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:25:03,308 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:25:03,491 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:25:03,492 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 08:25:03,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:25:03 BoogieIcfgContainer [2023-09-01 08:25:03,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:25:03,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:25:03,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:25:03,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:25:03,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:25:02" (1/3) ... [2023-09-01 08:25:03,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b62d2cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:25:03, skipping insertion in model container [2023-09-01 08:25:03,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:25:02" (2/3) ... [2023-09-01 08:25:03,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b62d2cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:25:03, skipping insertion in model container [2023-09-01 08:25:03,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:25:03" (3/3) ... [2023-09-01 08:25:03,503 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-09-01 08:25:03,511 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:25:03,520 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:25:03,521 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-09-01 08:25:03,521 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:25:03,613 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 08:25:03,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 142 transitions, 316 flow [2023-09-01 08:25:03,748 INFO L130 PetriNetUnfolder]: 10/138 cut-off events. [2023-09-01 08:25:03,749 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 08:25:03,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 138 events. 10/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-09-01 08:25:03,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 142 transitions, 316 flow [2023-09-01 08:25:03,762 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 118 transitions, 257 flow [2023-09-01 08:25:03,766 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:25:03,785 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 118 transitions, 257 flow [2023-09-01 08:25:03,791 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 118 transitions, 257 flow [2023-09-01 08:25:03,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 118 transitions, 257 flow [2023-09-01 08:25:03,833 INFO L130 PetriNetUnfolder]: 9/118 cut-off events. [2023-09-01 08:25:03,834 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:25:03,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 118 events. 9/118 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 122 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-09-01 08:25:03,839 INFO L119 LiptonReduction]: Number of co-enabled transitions 2520 [2023-09-01 08:25:08,514 INFO L134 LiptonReduction]: Checked pairs total: 3120 [2023-09-01 08:25:08,515 INFO L136 LiptonReduction]: Total number of compositions: 104 [2023-09-01 08:25:08,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:25:08,533 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;@437d057b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:25:08,533 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-09-01 08:25:08,537 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-09-01 08:25:08,537 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:25:08,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:25:08,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:25:08,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:25:08,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:25:08,543 INFO L85 PathProgramCache]: Analyzing trace with hash 628002, now seen corresponding path program 1 times [2023-09-01 08:25:08,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:25:08,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516068563] [2023-09-01 08:25:08,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:25:08,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:25:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:25:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:25:08,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:25:08,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516068563] [2023-09-01 08:25:08,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516068563] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:25:08,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:25:08,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:25:08,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467718278] [2023-09-01 08:25:08,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:25:08,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:25:08,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:25:08,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:25:08,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:25:08,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-09-01 08:25:08,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:08,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:25:08,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-09-01 08:25:08,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:25:09,883 INFO L130 PetriNetUnfolder]: 8857/11548 cut-off events. [2023-09-01 08:25:09,883 INFO L131 PetriNetUnfolder]: For 733/733 co-relation queries the response was YES. [2023-09-01 08:25:09,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23763 conditions, 11548 events. 8857/11548 cut-off events. For 733/733 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 53280 event pairs, 2817 based on Foata normal form. 0/3638 useless extension candidates. Maximal degree in co-relation 21576. Up to 11343 conditions per place. [2023-09-01 08:25:09,999 INFO L137 encePairwiseOnDemand]: 225/246 looper letters, 51 selfloop transitions, 7 changer transitions 2/60 dead transitions. [2023-09-01 08:25:10,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 279 flow [2023-09-01 08:25:10,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:25:10,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:25:10,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2023-09-01 08:25:10,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338753387533876 [2023-09-01 08:25:10,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2023-09-01 08:25:10,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2023-09-01 08:25:10,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:25:10,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2023-09-01 08:25:10,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:10,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:10,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:10,038 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 99 flow. Second operand 3 states and 394 transitions. [2023-09-01 08:25:10,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 60 transitions, 279 flow [2023-09-01 08:25:10,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 60 transitions, 255 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-09-01 08:25:10,049 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 151 flow [2023-09-01 08:25:10,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-09-01 08:25:10,056 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -6 predicate places. [2023-09-01 08:25:10,057 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 151 flow [2023-09-01 08:25:10,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:10,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:25:10,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 08:25:10,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:25:10,059 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:25:10,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:25:10,068 INFO L85 PathProgramCache]: Analyzing trace with hash 19468720, now seen corresponding path program 1 times [2023-09-01 08:25:10,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:25:10,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404908139] [2023-09-01 08:25:10,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:25:10,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:25:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:25:10,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:25:10,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:25:10,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404908139] [2023-09-01 08:25:10,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404908139] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:25:10,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550460867] [2023-09-01 08:25:10,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:25:10,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:25:10,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:25:10,221 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) [2023-09-01 08:25:10,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:25:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:25:10,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:25:10,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:25:10,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:25:10,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:25:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:25:10,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550460867] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:25:10,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:25:10,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-09-01 08:25:10,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585643090] [2023-09-01 08:25:10,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:25:10,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 08:25:10,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:25:10,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 08:25:10,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:25:10,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-09-01 08:25:10,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 151 flow. Second operand has 6 states, 6 states have (on average 107.33333333333333) internal successors, (644), 6 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) [2023-09-01 08:25:10,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:25:10,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-09-01 08:25:10,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:25:13,638 INFO L130 PetriNetUnfolder]: 34367/44442 cut-off events. [2023-09-01 08:25:13,638 INFO L131 PetriNetUnfolder]: For 2405/2405 co-relation queries the response was YES. [2023-09-01 08:25:13,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120980 conditions, 44442 events. 34367/44442 cut-off events. For 2405/2405 co-relation queries the response was YES. Maximal size of possible extension queue 2138. Compared 238022 event pairs, 7837 based on Foata normal form. 0/21114 useless extension candidates. Maximal degree in co-relation 57652. Up to 30473 conditions per place. [2023-09-01 08:25:14,048 INFO L137 encePairwiseOnDemand]: 242/246 looper letters, 168 selfloop transitions, 10 changer transitions 0/178 dead transitions. [2023-09-01 08:25:14,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 178 transitions, 938 flow [2023-09-01 08:25:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:25:14,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:25:14,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 813 transitions. [2023-09-01 08:25:14,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508130081300813 [2023-09-01 08:25:14,052 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 813 transitions. [2023-09-01 08:25:14,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 813 transitions. [2023-09-01 08:25:14,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:25:14,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 813 transitions. [2023-09-01 08:25:14,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:14,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:14,059 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:14,059 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 151 flow. Second operand 6 states and 813 transitions. [2023-09-01 08:25:14,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 178 transitions, 938 flow [2023-09-01 08:25:14,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 178 transitions, 932 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:25:14,065 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 221 flow [2023-09-01 08:25:14,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2023-09-01 08:25:14,066 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2023-09-01 08:25:14,066 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 221 flow [2023-09-01 08:25:14,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.33333333333333) internal successors, (644), 6 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) [2023-09-01 08:25:14,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:25:14,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 08:25:14,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 08:25:14,273 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 [2023-09-01 08:25:14,274 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:25:14,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:25:14,274 INFO L85 PathProgramCache]: Analyzing trace with hash 19468719, now seen corresponding path program 1 times [2023-09-01 08:25:14,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:25:14,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981772759] [2023-09-01 08:25:14,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:25:14,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:25:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:25:14,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:25:14,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:25:14,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981772759] [2023-09-01 08:25:14,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981772759] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:25:14,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:25:14,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:25:14,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985794867] [2023-09-01 08:25:14,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:25:14,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:25:14,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:25:14,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:25:14,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:25:14,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-09-01 08:25:14,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:14,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:25:14,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-09-01 08:25:14,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:25:16,584 INFO L130 PetriNetUnfolder]: 31609/41312 cut-off events. [2023-09-01 08:25:16,584 INFO L131 PetriNetUnfolder]: For 14262/14262 co-relation queries the response was YES. [2023-09-01 08:25:16,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116649 conditions, 41312 events. 31609/41312 cut-off events. For 14262/14262 co-relation queries the response was YES. Maximal size of possible extension queue 1954. Compared 220847 event pairs, 17393 based on Foata normal form. 1878/24602 useless extension candidates. Maximal degree in co-relation 64951. Up to 33598 conditions per place. [2023-09-01 08:25:16,872 INFO L137 encePairwiseOnDemand]: 243/246 looper letters, 73 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2023-09-01 08:25:16,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 76 transitions, 433 flow [2023-09-01 08:25:16,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:25:16,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:25:16,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 495 transitions. [2023-09-01 08:25:16,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030487804878049 [2023-09-01 08:25:16,875 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 495 transitions. [2023-09-01 08:25:16,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 495 transitions. [2023-09-01 08:25:16,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:25:16,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 495 transitions. [2023-09-01 08:25:16,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:16,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:16,880 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:16,880 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 221 flow. Second operand 4 states and 495 transitions. [2023-09-01 08:25:16,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 76 transitions, 433 flow [2023-09-01 08:25:16,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 433 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 08:25:16,895 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 186 flow [2023-09-01 08:25:16,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2023-09-01 08:25:16,896 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2023-09-01 08:25:16,897 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 186 flow [2023-09-01 08:25:16,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:16,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:25:16,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 08:25:16,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 08:25:16,898 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:25:16,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:25:16,899 INFO L85 PathProgramCache]: Analyzing trace with hash 19468718, now seen corresponding path program 1 times [2023-09-01 08:25:16,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:25:16,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551679113] [2023-09-01 08:25:16,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:25:16,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:25:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:25:16,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:25:16,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:25:16,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551679113] [2023-09-01 08:25:16,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551679113] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:25:16,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021179057] [2023-09-01 08:25:16,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:25:16,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:25:16,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:25:16,959 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) [2023-09-01 08:25:16,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:25:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:25:17,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:25:17,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:25:17,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:25:17,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:25:17,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:25:17,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021179057] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:25:17,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:25:17,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:25:17,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558007057] [2023-09-01 08:25:17,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:25:17,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:25:17,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:25:17,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:25:17,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:25:17,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-09-01 08:25:17,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 107.57142857142857) internal successors, (753), 7 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:17,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:25:17,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-09-01 08:25:17,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:25:23,138 INFO L130 PetriNetUnfolder]: 79173/108458 cut-off events. [2023-09-01 08:25:23,138 INFO L131 PetriNetUnfolder]: For 34471/34471 co-relation queries the response was YES. [2023-09-01 08:25:23,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303504 conditions, 108458 events. 79173/108458 cut-off events. For 34471/34471 co-relation queries the response was YES. Maximal size of possible extension queue 5083. Compared 747825 event pairs, 10227 based on Foata normal form. 4092/73486 useless extension candidates. Maximal degree in co-relation 159600. Up to 65395 conditions per place. [2023-09-01 08:25:23,849 INFO L137 encePairwiseOnDemand]: 228/246 looper letters, 128 selfloop transitions, 70 changer transitions 0/198 dead transitions. [2023-09-01 08:25:23,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 198 transitions, 1201 flow [2023-09-01 08:25:23,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:25:23,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:25:23,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 946 transitions. [2023-09-01 08:25:23,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5493612078977933 [2023-09-01 08:25:23,853 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 946 transitions. [2023-09-01 08:25:23,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 946 transitions. [2023-09-01 08:25:23,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:25:23,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 946 transitions. [2023-09-01 08:25:23,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:23,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:23,860 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:23,860 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 186 flow. Second operand 7 states and 946 transitions. [2023-09-01 08:25:23,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 198 transitions, 1201 flow [2023-09-01 08:25:23,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 198 transitions, 1192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:25:23,964 INFO L231 Difference]: Finished difference. Result has 61 places, 109 transitions, 950 flow [2023-09-01 08:25:23,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=950, PETRI_PLACES=61, PETRI_TRANSITIONS=109} [2023-09-01 08:25:23,965 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2023-09-01 08:25:23,965 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 109 transitions, 950 flow [2023-09-01 08:25:23,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.57142857142857) internal successors, (753), 7 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:23,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:25:23,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 08:25:23,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 08:25:24,173 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 [2023-09-01 08:25:24,173 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:25:24,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:25:24,174 INFO L85 PathProgramCache]: Analyzing trace with hash 19468717, now seen corresponding path program 1 times [2023-09-01 08:25:24,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:25:24,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954095826] [2023-09-01 08:25:24,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:25:24,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:25:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:25:24,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:25:24,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:25:24,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954095826] [2023-09-01 08:25:24,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954095826] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:25:24,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:25:24,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:25:24,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177175060] [2023-09-01 08:25:24,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:25:24,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:25:24,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:25:24,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:25:24,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:25:24,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-09-01 08:25:24,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 109 transitions, 950 flow. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:24,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:25:24,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-09-01 08:25:24,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:25:28,754 INFO L130 PetriNetUnfolder]: 51043/68174 cut-off events. [2023-09-01 08:25:28,754 INFO L131 PetriNetUnfolder]: For 147364/147364 co-relation queries the response was YES. [2023-09-01 08:25:28,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303284 conditions, 68174 events. 51043/68174 cut-off events. For 147364/147364 co-relation queries the response was YES. Maximal size of possible extension queue 3018. Compared 402118 event pairs, 32031 based on Foata normal form. 7166/55916 useless extension candidates. Maximal degree in co-relation 245592. Up to 68174 conditions per place. [2023-09-01 08:25:29,240 INFO L137 encePairwiseOnDemand]: 243/246 looper letters, 89 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-09-01 08:25:29,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 90 transitions, 958 flow [2023-09-01 08:25:29,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:25:29,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:25:29,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2023-09-01 08:25:29,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2023-09-01 08:25:29,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2023-09-01 08:25:29,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2023-09-01 08:25:29,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:25:29,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2023-09-01 08:25:29,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:29,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:29,245 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:29,245 INFO L175 Difference]: Start difference. First operand has 61 places, 109 transitions, 950 flow. Second operand 3 states and 354 transitions. [2023-09-01 08:25:29,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 90 transitions, 958 flow [2023-09-01 08:25:30,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 90 transitions, 878 flow, removed 40 selfloop flow, removed 1 redundant places. [2023-09-01 08:25:30,641 INFO L231 Difference]: Finished difference. Result has 59 places, 90 transitions, 700 flow [2023-09-01 08:25:30,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=700, PETRI_PLACES=59, PETRI_TRANSITIONS=90} [2023-09-01 08:25:30,644 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 11 predicate places. [2023-09-01 08:25:30,644 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 90 transitions, 700 flow [2023-09-01 08:25:30,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:30,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:25:30,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:25:30,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:25:30,646 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:25:30,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:25:30,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1529643427, now seen corresponding path program 1 times [2023-09-01 08:25:30,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:25:30,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502622148] [2023-09-01 08:25:30,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:25:30,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:25:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:25:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:25:30,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:25:30,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502622148] [2023-09-01 08:25:30,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502622148] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:25:30,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:25:30,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:25:30,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130421947] [2023-09-01 08:25:30,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:25:30,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:25:30,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:25:30,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:25:30,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:25:30,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-09-01 08:25:30,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 90 transitions, 700 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:30,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:25:30,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-09-01 08:25:30,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:25:37,292 INFO L130 PetriNetUnfolder]: 78213/104434 cut-off events. [2023-09-01 08:25:37,292 INFO L131 PetriNetUnfolder]: For 130979/130979 co-relation queries the response was YES. [2023-09-01 08:25:37,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417681 conditions, 104434 events. 78213/104434 cut-off events. For 130979/130979 co-relation queries the response was YES. Maximal size of possible extension queue 4500. Compared 664361 event pairs, 20641 based on Foata normal form. 0/77738 useless extension candidates. Maximal degree in co-relation 417661. Up to 70613 conditions per place. [2023-09-01 08:25:38,013 INFO L137 encePairwiseOnDemand]: 242/246 looper letters, 162 selfloop transitions, 4 changer transitions 0/166 dead transitions. [2023-09-01 08:25:38,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 166 transitions, 1631 flow [2023-09-01 08:25:38,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:25:38,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:25:38,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2023-09-01 08:25:38,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176151761517616 [2023-09-01 08:25:38,015 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2023-09-01 08:25:38,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2023-09-01 08:25:38,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:25:38,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2023-09-01 08:25:38,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:38,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:38,017 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:38,018 INFO L175 Difference]: Start difference. First operand has 59 places, 90 transitions, 700 flow. Second operand 3 states and 382 transitions. [2023-09-01 08:25:38,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 166 transitions, 1631 flow [2023-09-01 08:25:39,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 166 transitions, 1630 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:25:39,351 INFO L231 Difference]: Finished difference. Result has 61 places, 93 transitions, 751 flow [2023-09-01 08:25:39,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=751, PETRI_PLACES=61, PETRI_TRANSITIONS=93} [2023-09-01 08:25:39,352 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2023-09-01 08:25:39,352 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 93 transitions, 751 flow [2023-09-01 08:25:39,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:39,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:25:39,353 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 08:25:39,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 08:25:39,353 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:25:39,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:25:39,354 INFO L85 PathProgramCache]: Analyzing trace with hash 172613605, now seen corresponding path program 2 times [2023-09-01 08:25:39,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:25:39,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787753134] [2023-09-01 08:25:39,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:25:39,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:25:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:25:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:25:39,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:25:39,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787753134] [2023-09-01 08:25:39,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787753134] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:25:39,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436466527] [2023-09-01 08:25:39,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:25:39,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:25:39,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:25:39,414 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) [2023-09-01 08:25:39,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:25:39,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:25:39,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:25:39,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 08:25:39,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:25:39,539 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:25:39,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:25:39,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436466527] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:25:39,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:25:39,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:25:39,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120707538] [2023-09-01 08:25:39,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:25:39,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:25:39,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:25:39,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:25:39,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:25:39,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 246 [2023-09-01 08:25:39,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 93 transitions, 751 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:39,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:25:39,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 246 [2023-09-01 08:25:39,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:25:45,675 INFO L130 PetriNetUnfolder]: 73705/98500 cut-off events. [2023-09-01 08:25:45,675 INFO L131 PetriNetUnfolder]: For 175994/175994 co-relation queries the response was YES. [2023-09-01 08:25:46,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402498 conditions, 98500 events. 73705/98500 cut-off events. For 175994/175994 co-relation queries the response was YES. Maximal size of possible extension queue 4311. Compared 609105 event pairs, 47991 based on Foata normal form. 1426/74694 useless extension candidates. Maximal degree in co-relation 402476. Up to 98500 conditions per place. [2023-09-01 08:25:46,403 INFO L137 encePairwiseOnDemand]: 244/246 looper letters, 87 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2023-09-01 08:25:46,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 88 transitions, 854 flow [2023-09-01 08:25:46,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:25:46,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:25:46,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2023-09-01 08:25:46,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47289972899729 [2023-09-01 08:25:46,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2023-09-01 08:25:46,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2023-09-01 08:25:46,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:25:46,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2023-09-01 08:25:46,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:46,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:46,406 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:46,406 INFO L175 Difference]: Start difference. First operand has 61 places, 93 transitions, 751 flow. Second operand 3 states and 349 transitions. [2023-09-01 08:25:46,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 88 transitions, 854 flow [2023-09-01 08:25:47,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 88 transitions, 812 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:25:47,192 INFO L231 Difference]: Finished difference. Result has 57 places, 88 transitions, 638 flow [2023-09-01 08:25:47,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=638, PETRI_PLACES=57, PETRI_TRANSITIONS=88} [2023-09-01 08:25:47,192 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 9 predicate places. [2023-09-01 08:25:47,193 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 88 transitions, 638 flow [2023-09-01 08:25:47,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:47,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:25:47,193 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 08:25:47,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 08:25:47,397 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 [2023-09-01 08:25:47,398 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:25:47,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:25:47,398 INFO L85 PathProgramCache]: Analyzing trace with hash 172613603, now seen corresponding path program 2 times [2023-09-01 08:25:47,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:25:47,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636768675] [2023-09-01 08:25:47,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:25:47,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:25:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:25:47,485 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:25:47,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:25:47,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636768675] [2023-09-01 08:25:47,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636768675] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:25:47,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919505155] [2023-09-01 08:25:47,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:25:47,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:25:47,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:25:47,493 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) [2023-09-01 08:25:47,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:25:47,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 08:25:47,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:25:47,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:25:47,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:25:47,589 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:25:47,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:25:47,645 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:25:47,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919505155] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:25:47,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:25:47,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-09-01 08:25:47,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912214360] [2023-09-01 08:25:47,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:25:47,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:25:47,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:25:47,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:25:47,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:25:47,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-09-01 08:25:47,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 88 transitions, 638 flow. Second operand has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:25:47,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:25:47,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-09-01 08:25:47,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:26:06,860 INFO L130 PetriNetUnfolder]: 225857/302332 cut-off events. [2023-09-01 08:26:06,860 INFO L131 PetriNetUnfolder]: For 761151/761151 co-relation queries the response was YES. [2023-09-01 08:26:07,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1174847 conditions, 302332 events. 225857/302332 cut-off events. For 761151/761151 co-relation queries the response was YES. Maximal size of possible extension queue 9488. Compared 2104718 event pairs, 21345 based on Foata normal form. 43700/262448 useless extension candidates. Maximal degree in co-relation 1174828. Up to 132229 conditions per place. [2023-09-01 08:26:09,120 INFO L137 encePairwiseOnDemand]: 231/246 looper letters, 214 selfloop transitions, 233 changer transitions 0/447 dead transitions. [2023-09-01 08:26:09,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 447 transitions, 3586 flow [2023-09-01 08:26:09,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:26:09,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:26:09,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1615 transitions. [2023-09-01 08:26:09,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5470867208672087 [2023-09-01 08:26:09,125 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1615 transitions. [2023-09-01 08:26:09,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1615 transitions. [2023-09-01 08:26:09,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:26:09,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1615 transitions. [2023-09-01 08:26:09,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 134.58333333333334) internal successors, (1615), 12 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:26:09,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 246.0) internal successors, (3198), 13 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:26:09,134 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 246.0) internal successors, (3198), 13 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:26:09,134 INFO L175 Difference]: Start difference. First operand has 57 places, 88 transitions, 638 flow. Second operand 12 states and 1615 transitions. [2023-09-01 08:26:09,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 447 transitions, 3586 flow [2023-09-01 08:26:10,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 447 transitions, 3585 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:26:10,719 INFO L231 Difference]: Finished difference. Result has 77 places, 277 transitions, 3328 flow [2023-09-01 08:26:10,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3328, PETRI_PLACES=77, PETRI_TRANSITIONS=277} [2023-09-01 08:26:10,720 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 29 predicate places. [2023-09-01 08:26:10,720 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 277 transitions, 3328 flow [2023-09-01 08:26:10,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:26:10,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:26:10,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:26:10,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:26:10,926 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 [2023-09-01 08:26:10,926 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:26:10,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:26:10,927 INFO L85 PathProgramCache]: Analyzing trace with hash 225126105, now seen corresponding path program 1 times [2023-09-01 08:26:10,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:26:10,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648790681] [2023-09-01 08:26:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:26:10,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:26:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:26:10,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:26:10,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:26:10,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648790681] [2023-09-01 08:26:10,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648790681] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:26:10,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:26:10,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:26:10,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802233678] [2023-09-01 08:26:10,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:26:10,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:26:10,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:26:10,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:26:10,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:26:10,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-09-01 08:26:10,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 277 transitions, 3328 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:26:10,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:26:10,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-09-01 08:26:10,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:26:31,451 INFO L130 PetriNetUnfolder]: 171649/230064 cut-off events. [2023-09-01 08:26:31,451 INFO L131 PetriNetUnfolder]: For 795545/795545 co-relation queries the response was YES. [2023-09-01 08:26:32,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1169764 conditions, 230064 events. 171649/230064 cut-off events. For 795545/795545 co-relation queries the response was YES. Maximal size of possible extension queue 7310. Compared 1550576 event pairs, 94207 based on Foata normal form. 0/175948 useless extension candidates. Maximal degree in co-relation 1169734. Up to 230064 conditions per place. [2023-09-01 08:26:33,833 INFO L137 encePairwiseOnDemand]: 244/246 looper letters, 256 selfloop transitions, 1 changer transitions 0/257 dead transitions. [2023-09-01 08:26:33,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 257 transitions, 3638 flow [2023-09-01 08:26:33,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:26:33,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:26:33,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-09-01 08:26:33,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2023-09-01 08:26:33,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-09-01 08:26:33,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-09-01 08:26:33,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:26:33,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-09-01 08:26:33,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:26:33,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:26:33,839 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:26:33,839 INFO L175 Difference]: Start difference. First operand has 77 places, 277 transitions, 3328 flow. Second operand 3 states and 351 transitions. [2023-09-01 08:26:33,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 257 transitions, 3638 flow [2023-09-01 08:26:48,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 257 transitions, 2938 flow, removed 350 selfloop flow, removed 0 redundant places. [2023-09-01 08:26:48,509 INFO L231 Difference]: Finished difference. Result has 78 places, 257 transitions, 2426 flow [2023-09-01 08:26:48,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2424, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2426, PETRI_PLACES=78, PETRI_TRANSITIONS=257} [2023-09-01 08:26:48,509 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 30 predicate places. [2023-09-01 08:26:48,509 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 257 transitions, 2426 flow [2023-09-01 08:26:48,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:26:48,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:26:48,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:26:48,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 08:26:48,510 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:26:48,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:26:48,510 INFO L85 PathProgramCache]: Analyzing trace with hash 225126106, now seen corresponding path program 1 times [2023-09-01 08:26:48,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:26:48,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567373379] [2023-09-01 08:26:48,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:26:48,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:26:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:26:48,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:26:48,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:26:48,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567373379] [2023-09-01 08:26:48,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567373379] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:26:48,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:26:48,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:26:48,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616672361] [2023-09-01 08:26:48,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:26:48,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:26:48,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:26:48,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:26:48,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:26:48,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-09-01 08:26:48,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 257 transitions, 2426 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:26:48,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:26:48,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-09-01 08:26:48,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:27:11,432 INFO L130 PetriNetUnfolder]: 204313/274072 cut-off events. [2023-09-01 08:27:11,432 INFO L131 PetriNetUnfolder]: For 691172/691172 co-relation queries the response was YES. [2023-09-01 08:27:13,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1170128 conditions, 274072 events. 204313/274072 cut-off events. For 691172/691172 co-relation queries the response was YES. Maximal size of possible extension queue 8639. Compared 1899738 event pairs, 36633 based on Foata normal form. 0/213376 useless extension candidates. Maximal degree in co-relation 1170096. Up to 232961 conditions per place. [2023-09-01 08:27:14,731 INFO L137 encePairwiseOnDemand]: 243/246 looper letters, 403 selfloop transitions, 21 changer transitions 0/424 dead transitions. [2023-09-01 08:27:14,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 424 transitions, 4854 flow [2023-09-01 08:27:14,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:27:14,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:27:14,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2023-09-01 08:27:14,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094850948509485 [2023-09-01 08:27:14,754 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 376 transitions. [2023-09-01 08:27:14,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 376 transitions. [2023-09-01 08:27:14,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:27:14,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 376 transitions. [2023-09-01 08:27:14,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:27:14,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:27:14,758 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:27:14,758 INFO L175 Difference]: Start difference. First operand has 78 places, 257 transitions, 2426 flow. Second operand 3 states and 376 transitions. [2023-09-01 08:27:14,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 424 transitions, 4854 flow [2023-09-01 08:27:44,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 424 transitions, 4831 flow, removed 11 selfloop flow, removed 1 redundant places. [2023-09-01 08:27:44,921 INFO L231 Difference]: Finished difference. Result has 80 places, 275 transitions, 2692 flow [2023-09-01 08:27:44,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2399, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2692, PETRI_PLACES=80, PETRI_TRANSITIONS=275} [2023-09-01 08:27:44,922 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 32 predicate places. [2023-09-01 08:27:44,922 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 275 transitions, 2692 flow [2023-09-01 08:27:44,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:27:44,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:27:44,923 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-09-01 08:27:44,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 08:27:44,923 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:27:44,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:27:44,924 INFO L85 PathProgramCache]: Analyzing trace with hash 37376634, now seen corresponding path program 1 times [2023-09-01 08:27:44,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:27:44,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991296557] [2023-09-01 08:27:44,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:27:44,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:27:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:27:44,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:27:44,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:27:44,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991296557] [2023-09-01 08:27:44,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991296557] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:27:44,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937608961] [2023-09-01 08:27:44,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:27:44,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:27:44,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:27:44,986 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) [2023-09-01 08:27:44,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 08:27:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:27:45,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:27:45,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:27:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:27:45,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:27:45,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:27:45,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937608961] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:27:45,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:27:45,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:27:45,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184644249] [2023-09-01 08:27:45,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:27:45,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:27:45,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:27:45,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:27:45,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:27:45,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-09-01 08:27:45,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 275 transitions, 2692 flow. Second operand has 7 states, 7 states have (on average 109.14285714285714) internal successors, (764), 7 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:27:45,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:27:45,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-09-01 08:27:45,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:28:34,887 INFO L130 PetriNetUnfolder]: 431602/571351 cut-off events. [2023-09-01 08:28:34,887 INFO L131 PetriNetUnfolder]: For 1593344/1593344 co-relation queries the response was YES. [2023-09-01 08:28:38,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2550805 conditions, 571351 events. 431602/571351 cut-off events. For 1593344/1593344 co-relation queries the response was YES. Maximal size of possible extension queue 14659. Compared 4037371 event pairs, 77992 based on Foata normal form. 0/441739 useless extension candidates. Maximal degree in co-relation 2550771. Up to 141211 conditions per place. [2023-09-01 08:28:40,982 INFO L137 encePairwiseOnDemand]: 242/246 looper letters, 1305 selfloop transitions, 113 changer transitions 0/1418 dead transitions. [2023-09-01 08:28:40,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 1418 transitions, 16694 flow [2023-09-01 08:28:40,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:28:40,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:28:40,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 903 transitions. [2023-09-01 08:28:40,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524390243902439 [2023-09-01 08:28:40,985 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 903 transitions. [2023-09-01 08:28:40,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 903 transitions. [2023-09-01 08:28:40,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:28:40,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 903 transitions. [2023-09-01 08:28:40,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:28:40,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:28:40,989 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:28:40,989 INFO L175 Difference]: Start difference. First operand has 80 places, 275 transitions, 2692 flow. Second operand 7 states and 903 transitions. [2023-09-01 08:28:40,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 1418 transitions, 16694 flow [2023-09-01 08:30:34,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 1418 transitions, 16578 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:30:34,841 INFO L231 Difference]: Finished difference. Result has 88 places, 359 transitions, 3975 flow [2023-09-01 08:30:34,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2671, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3975, PETRI_PLACES=88, PETRI_TRANSITIONS=359} [2023-09-01 08:30:34,841 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 40 predicate places. [2023-09-01 08:30:34,841 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 359 transitions, 3975 flow [2023-09-01 08:30:34,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.14285714285714) internal successors, (764), 7 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:30:34,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:30:34,842 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-09-01 08:30:34,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 08:30:35,042 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,SelfDestructingSolverStorable10 [2023-09-01 08:30:35,043 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:30:35,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:30:35,043 INFO L85 PathProgramCache]: Analyzing trace with hash 37376633, now seen corresponding path program 1 times [2023-09-01 08:30:35,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:30:35,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484323354] [2023-09-01 08:30:35,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:30:35,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:30:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:30:35,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:30:35,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:30:35,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484323354] [2023-09-01 08:30:35,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484323354] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:30:35,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890826270] [2023-09-01 08:30:35,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:30:35,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:30:35,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:30:35,148 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) [2023-09-01 08:30:35,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 08:30:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:30:35,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:30:35,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:30:35,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:30:35,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:30:35,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890826270] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:30:35,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:30:35,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-09-01 08:30:35,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840265677] [2023-09-01 08:30:35,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:30:35,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:30:35,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:30:35,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:30:35,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:30:35,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-09-01 08:30:35,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 359 transitions, 3975 flow. Second operand has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:30:35,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:30:35,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-09-01 08:30:35,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand