./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-3.i --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/pthread-C-DAC/pthread-demo-datarace-3.i -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 44de34ccc7195f8ba562241ad79de4cb2add35f6ad2c59de465184820d6f6382 --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 06:05:07,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:05:07,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:05:07,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:05:07,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:05:07,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:05:07,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:05:07,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:05:07,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:05:07,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:05:07,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:05:07,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:05:07,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:05:07,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:05:07,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:05:07,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:05:07,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:05:07,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:05:07,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:05:07,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:05:07,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:05:07,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:05:07,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:05:07,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:05:07,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:05:07,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:05:07,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:05:07,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:05:07,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:05:07,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:05:07,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:05:07,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:05:07,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:05:07,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:05:07,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:05:07,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:05:07,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:05:07,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:05:07,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:05:07,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:05:07,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:05:07,689 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:05:07,722 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:05:07,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:05:07,723 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:05:07,723 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:05:07,724 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:05:07,725 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:05:07,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:05:07,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:05:07,726 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:05:07,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:05:07,727 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:05:07,727 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:05:07,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:05:07,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:05:07,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:05:07,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:05:07,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:05:07,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:05:07,728 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:05:07,729 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:05:07,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:05:07,729 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:05:07,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:05:07,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:05:07,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:05:07,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:05:07,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:05:07,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:05:07,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:05:07,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:05:07,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:05:07,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:05:07,732 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:05:07,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:05:07,732 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:05:07,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:05:07,733 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:05:07,733 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44de34ccc7195f8ba562241ad79de4cb2add35f6ad2c59de465184820d6f6382 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:05:08,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:05:08,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:05:08,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:05:08,097 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:05:08,097 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:05:08,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-3.i [2023-09-01 06:05:09,471 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:05:09,738 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:05:09,739 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-3.i [2023-09-01 06:05:09,758 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d127d32/7b0a3d6fdc754083b5a474098e4c47c1/FLAGc25a566b7 [2023-09-01 06:05:09,778 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d127d32/7b0a3d6fdc754083b5a474098e4c47c1 [2023-09-01 06:05:09,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:05:09,782 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:05:09,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:05:09,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:05:09,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:05:09,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:05:09" (1/1) ... [2023-09-01 06:05:09,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d74c8a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:05:09, skipping insertion in model container [2023-09-01 06:05:09,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:05:09" (1/1) ... [2023-09-01 06:05:09,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:05:09,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:05:10,018 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-3.i[818,831] [2023-09-01 06:05:10,385 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:05:10,396 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:05:10,409 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-3.i[818,831] [2023-09-01 06:05:10,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:05:10,542 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 06:05:10,542 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 06:05:10,549 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:05:10,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:05:10 WrapperNode [2023-09-01 06:05:10,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:05:10,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:05:10,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:05:10,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:05:10,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:05:10" (1/1) ... [2023-09-01 06:05:10,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:05:10" (1/1) ... [2023-09-01 06:05:10,621 INFO L138 Inliner]: procedures = 365, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2023-09-01 06:05:10,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:05:10,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:05:10,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:05:10,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:05:10,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:05:10" (1/1) ... [2023-09-01 06:05:10,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:05:10" (1/1) ... [2023-09-01 06:05:10,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:05:10" (1/1) ... [2023-09-01 06:05:10,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:05:10" (1/1) ... [2023-09-01 06:05:10,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:05:10" (1/1) ... [2023-09-01 06:05:10,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:05:10" (1/1) ... [2023-09-01 06:05:10,673 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:05:10" (1/1) ... [2023-09-01 06:05:10,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:05:10" (1/1) ... [2023-09-01 06:05:10,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:05:10,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:05:10,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:05:10,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:05:10,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:05:10" (1/1) ... [2023-09-01 06:05:10,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:05:10,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:05:10,717 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 06:05:10,752 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 06:05:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 06:05:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:05:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:05:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 06:05:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:05:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2023-09-01 06:05:10,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2023-09-01 06:05:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:05:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:05:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:05:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:05:10,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:05:10,776 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 06:05:10,889 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:05:10,891 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:05:11,130 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:05:11,151 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:05:11,152 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 06:05:11,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:05:11 BoogieIcfgContainer [2023-09-01 06:05:11,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:05:11,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:05:11,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:05:11,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:05:11,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:05:09" (1/3) ... [2023-09-01 06:05:11,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8ec32f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:05:11, skipping insertion in model container [2023-09-01 06:05:11,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:05:10" (2/3) ... [2023-09-01 06:05:11,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8ec32f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:05:11, skipping insertion in model container [2023-09-01 06:05:11,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:05:11" (3/3) ... [2023-09-01 06:05:11,162 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-3.i [2023-09-01 06:05:11,170 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:05:11,178 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:05:11,178 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 06:05:11,178 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:05:11,230 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 06:05:11,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 98 transitions, 204 flow [2023-09-01 06:05:11,299 INFO L130 PetriNetUnfolder]: 7/97 cut-off events. [2023-09-01 06:05:11,299 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 06:05:11,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 97 events. 7/97 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-09-01 06:05:11,305 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 98 transitions, 204 flow [2023-09-01 06:05:11,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 77 transitions, 157 flow [2023-09-01 06:05:11,312 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:05:11,327 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 77 transitions, 157 flow [2023-09-01 06:05:11,330 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 77 transitions, 157 flow [2023-09-01 06:05:11,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 77 transitions, 157 flow [2023-09-01 06:05:11,361 INFO L130 PetriNetUnfolder]: 5/77 cut-off events. [2023-09-01 06:05:11,361 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:05:11,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 77 events. 5/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-09-01 06:05:11,364 INFO L119 LiptonReduction]: Number of co-enabled transitions 1344 [2023-09-01 06:05:13,246 INFO L134 LiptonReduction]: Checked pairs total: 1381 [2023-09-01 06:05:13,246 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-09-01 06:05:13,270 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 06:05:13,277 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;@6e4ed7e9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:05:13,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-09-01 06:05:13,281 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2023-09-01 06:05:13,281 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:05:13,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:05:13,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 06:05:13,283 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:05:13,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:05:13,290 INFO L85 PathProgramCache]: Analyzing trace with hash 11221162, now seen corresponding path program 1 times [2023-09-01 06:05:13,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:05:13,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814879707] [2023-09-01 06:05:13,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:13,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:05:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:13,620 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 06:05:13,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:05:13,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814879707] [2023-09-01 06:05:13,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814879707] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:05:13,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:05:13,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 06:05:13,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627350419] [2023-09-01 06:05:13,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:05:13,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:05:13,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:05:13,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:05:13,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:05:13,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 176 [2023-09-01 06:05:13,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:05:13,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:05:13,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 176 [2023-09-01 06:05:13,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:05:13,724 INFO L130 PetriNetUnfolder]: 70/130 cut-off events. [2023-09-01 06:05:13,724 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:05:13,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 130 events. 70/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 453 event pairs, 12 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 256. Up to 112 conditions per place. [2023-09-01 06:05:13,727 INFO L137 encePairwiseOnDemand]: 165/176 looper letters, 20 selfloop transitions, 6 changer transitions 0/26 dead transitions. [2023-09-01 06:05:13,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 26 transitions, 107 flow [2023-09-01 06:05:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:05:13,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:05:13,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2023-09-01 06:05:13,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5321969696969697 [2023-09-01 06:05:13,740 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2023-09-01 06:05:13,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2023-09-01 06:05:13,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:05:13,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2023-09-01 06:05:13,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 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 06:05:13,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 06:05:13,751 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 06:05:13,753 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 37 flow. Second operand 3 states and 281 transitions. [2023-09-01 06:05:13,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 26 transitions, 107 flow [2023-09-01 06:05:13,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 26 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:05:13,757 INFO L231 Difference]: Finished difference. Result has 20 places, 21 transitions, 80 flow [2023-09-01 06:05:13,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=20, PETRI_TRANSITIONS=21} [2023-09-01 06:05:13,762 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2023-09-01 06:05:13,762 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 21 transitions, 80 flow [2023-09-01 06:05:13,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:05:13,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:05:13,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 06:05:13,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:05:13,763 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:05:13,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:05:13,764 INFO L85 PathProgramCache]: Analyzing trace with hash 347874172, now seen corresponding path program 1 times [2023-09-01 06:05:13,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:05:13,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239354843] [2023-09-01 06:05:13,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:13,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:05:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:13,855 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 06:05:13,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:05:13,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239354843] [2023-09-01 06:05:13,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239354843] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:05:13,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043520947] [2023-09-01 06:05:13,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:13,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:05:13,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:05:13,861 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 06:05:13,891 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 06:05:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:13,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 06:05:13,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:05:13,999 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 06:05:13,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:05:14,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043520947] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:05:14,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 06:05:14,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 06:05:14,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75367344] [2023-09-01 06:05:14,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:05:14,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 06:05:14,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:05:14,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 06:05:14,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 06:05:14,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 176 [2023-09-01 06:05:14,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 21 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 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 06:05:14,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:05:14,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 176 [2023-09-01 06:05:14,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:05:14,116 INFO L130 PetriNetUnfolder]: 86/159 cut-off events. [2023-09-01 06:05:14,118 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:05:14,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 159 events. 86/159 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 584 event pairs, 10 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 425. Up to 99 conditions per place. [2023-09-01 06:05:14,121 INFO L137 encePairwiseOnDemand]: 172/176 looper letters, 41 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-09-01 06:05:14,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 45 transitions, 257 flow [2023-09-01 06:05:14,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 06:05:14,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 06:05:14,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 361 transitions. [2023-09-01 06:05:14,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127840909090909 [2023-09-01 06:05:14,128 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 361 transitions. [2023-09-01 06:05:14,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 361 transitions. [2023-09-01 06:05:14,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:05:14,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 361 transitions. [2023-09-01 06:05:14,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 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 06:05:14,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 06:05:14,135 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 06:05:14,135 INFO L175 Difference]: Start difference. First operand has 20 places, 21 transitions, 80 flow. Second operand 4 states and 361 transitions. [2023-09-01 06:05:14,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 45 transitions, 257 flow [2023-09-01 06:05:14,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 45 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:05:14,137 INFO L231 Difference]: Finished difference. Result has 22 places, 21 transitions, 88 flow [2023-09-01 06:05:14,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=22, PETRI_TRANSITIONS=21} [2023-09-01 06:05:14,138 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-09-01 06:05:14,138 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 21 transitions, 88 flow [2023-09-01 06:05:14,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 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 06:05:14,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:05:14,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 06:05:14,152 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 06:05:14,346 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 06:05:14,347 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:05:14,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:05:14,348 INFO L85 PathProgramCache]: Analyzing trace with hash 347874140, now seen corresponding path program 1 times [2023-09-01 06:05:14,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:05:14,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022439070] [2023-09-01 06:05:14,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:14,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:05:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:14,394 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 06:05:14,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:05:14,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022439070] [2023-09-01 06:05:14,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022439070] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:05:14,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778635539] [2023-09-01 06:05:14,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:14,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:05:14,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:05:14,402 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 06:05:14,404 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 06:05:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:14,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 06:05:14,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:05:14,491 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 06:05:14,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:05:14,509 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 06:05:14,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778635539] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:05:14,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:05:14,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 06:05:14,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304548532] [2023-09-01 06:05:14,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:05:14,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 06:05:14,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:05:14,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 06:05:14,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 06:05:14,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 176 [2023-09-01 06:05:14,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 21 transitions, 88 flow. Second operand has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 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 06:05:14,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:05:14,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 176 [2023-09-01 06:05:14,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:05:14,609 INFO L130 PetriNetUnfolder]: 143/262 cut-off events. [2023-09-01 06:05:14,609 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2023-09-01 06:05:14,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 262 events. 143/262 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 995 event pairs, 10 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 786. Up to 164 conditions per place. [2023-09-01 06:05:14,612 INFO L137 encePairwiseOnDemand]: 166/176 looper letters, 40 selfloop transitions, 32 changer transitions 0/72 dead transitions. [2023-09-01 06:05:14,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 72 transitions, 426 flow [2023-09-01 06:05:14,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 06:05:14,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 06:05:14,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 655 transitions. [2023-09-01 06:05:14,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5316558441558441 [2023-09-01 06:05:14,614 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 655 transitions. [2023-09-01 06:05:14,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 655 transitions. [2023-09-01 06:05:14,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:05:14,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 655 transitions. [2023-09-01 06:05:14,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.57142857142857) internal successors, (655), 7 states have internal predecessors, (655), 0 states have call successors, (0), 0 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 06:05:14,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 176.0) internal successors, (1408), 8 states have internal predecessors, (1408), 0 states have call successors, (0), 0 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 06:05:14,634 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 176.0) internal successors, (1408), 8 states have internal predecessors, (1408), 0 states have call successors, (0), 0 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 06:05:14,634 INFO L175 Difference]: Start difference. First operand has 22 places, 21 transitions, 88 flow. Second operand 7 states and 655 transitions. [2023-09-01 06:05:14,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 72 transitions, 426 flow [2023-09-01 06:05:14,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 72 transitions, 422 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:05:14,636 INFO L231 Difference]: Finished difference. Result has 32 places, 48 transitions, 362 flow [2023-09-01 06:05:14,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=362, PETRI_PLACES=32, PETRI_TRANSITIONS=48} [2023-09-01 06:05:14,637 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 13 predicate places. [2023-09-01 06:05:14,638 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 48 transitions, 362 flow [2023-09-01 06:05:14,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 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 06:05:14,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:05:14,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 06:05:14,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 06:05:14,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-09-01 06:05:14,847 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_function_dataraceErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:05:14,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:05:14,847 INFO L85 PathProgramCache]: Analyzing trace with hash 347856696, now seen corresponding path program 1 times [2023-09-01 06:05:14,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:05:14,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169061663] [2023-09-01 06:05:14,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:14,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:05:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:14,900 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 06:05:14,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:05:14,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169061663] [2023-09-01 06:05:14,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169061663] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:05:14,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:05:14,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:05:14,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214690829] [2023-09-01 06:05:14,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:05:14,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:05:14,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:05:14,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:05:14,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:05:14,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 176 [2023-09-01 06:05:14,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 48 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 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 06:05:14,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:05:14,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 176 [2023-09-01 06:05:14,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:05:15,007 INFO L130 PetriNetUnfolder]: 138/276 cut-off events. [2023-09-01 06:05:15,007 INFO L131 PetriNetUnfolder]: For 477/477 co-relation queries the response was YES. [2023-09-01 06:05:15,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 276 events. 138/276 cut-off events. For 477/477 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1225 event pairs, 24 based on Foata normal form. 13/263 useless extension candidates. Maximal degree in co-relation 1241. Up to 186 conditions per place. [2023-09-01 06:05:15,011 INFO L137 encePairwiseOnDemand]: 171/176 looper letters, 58 selfloop transitions, 7 changer transitions 0/65 dead transitions. [2023-09-01 06:05:15,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 65 transitions, 625 flow [2023-09-01 06:05:15,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:05:15,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:05:15,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2023-09-01 06:05:15,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170454545454546 [2023-09-01 06:05:15,013 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2023-09-01 06:05:15,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2023-09-01 06:05:15,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:05:15,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2023-09-01 06:05:15,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 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 06:05:15,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 06:05:15,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 06:05:15,015 INFO L175 Difference]: Start difference. First operand has 32 places, 48 transitions, 362 flow. Second operand 3 states and 273 transitions. [2023-09-01 06:05:15,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 65 transitions, 625 flow [2023-09-01 06:05:15,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 65 transitions, 555 flow, removed 33 selfloop flow, removed 1 redundant places. [2023-09-01 06:05:15,022 INFO L231 Difference]: Finished difference. Result has 34 places, 45 transitions, 328 flow [2023-09-01 06:05:15,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=34, PETRI_TRANSITIONS=45} [2023-09-01 06:05:15,022 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 15 predicate places. [2023-09-01 06:05:15,023 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 45 transitions, 328 flow [2023-09-01 06:05:15,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 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 06:05:15,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:05:15,023 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:05:15,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:05:15,023 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:05:15,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:05:15,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2100802233, now seen corresponding path program 1 times [2023-09-01 06:05:15,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:05:15,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083190844] [2023-09-01 06:05:15,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:15,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:05:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:15,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 06:05:15,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:05:15,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083190844] [2023-09-01 06:05:15,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083190844] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:05:15,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:05:15,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:05:15,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686541425] [2023-09-01 06:05:15,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:05:15,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:05:15,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:05:15,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:05:15,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:05:15,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 176 [2023-09-01 06:05:15,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 45 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 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 06:05:15,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:05:15,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 176 [2023-09-01 06:05:15,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:05:15,173 INFO L130 PetriNetUnfolder]: 126/265 cut-off events. [2023-09-01 06:05:15,174 INFO L131 PetriNetUnfolder]: For 518/518 co-relation queries the response was YES. [2023-09-01 06:05:15,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 265 events. 126/265 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1152 event pairs, 26 based on Foata normal form. 38/269 useless extension candidates. Maximal degree in co-relation 1219. Up to 141 conditions per place. [2023-09-01 06:05:15,178 INFO L137 encePairwiseOnDemand]: 167/176 looper letters, 33 selfloop transitions, 20 changer transitions 0/53 dead transitions. [2023-09-01 06:05:15,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 495 flow [2023-09-01 06:05:15,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:05:15,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:05:15,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2023-09-01 06:05:15,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2023-09-01 06:05:15,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2023-09-01 06:05:15,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2023-09-01 06:05:15,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:05:15,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2023-09-01 06:05:15,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 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 06:05:15,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 06:05:15,183 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 06:05:15,183 INFO L175 Difference]: Start difference. First operand has 34 places, 45 transitions, 328 flow. Second operand 3 states and 276 transitions. [2023-09-01 06:05:15,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 495 flow [2023-09-01 06:05:15,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 53 transitions, 489 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:05:15,189 INFO L231 Difference]: Finished difference. Result has 37 places, 47 transitions, 458 flow [2023-09-01 06:05:15,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=458, PETRI_PLACES=37, PETRI_TRANSITIONS=47} [2023-09-01 06:05:15,191 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 18 predicate places. [2023-09-01 06:05:15,191 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 47 transitions, 458 flow [2023-09-01 06:05:15,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 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 06:05:15,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:05:15,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 06:05:15,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:05:15,192 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:05:15,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:05:15,193 INFO L85 PathProgramCache]: Analyzing trace with hash -2101343042, now seen corresponding path program 1 times [2023-09-01 06:05:15,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:05:15,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481275272] [2023-09-01 06:05:15,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:15,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:05:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:15,279 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 06:05:15,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:05:15,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481275272] [2023-09-01 06:05:15,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481275272] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:05:15,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475750488] [2023-09-01 06:05:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:15,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:05:15,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:05:15,287 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 06:05:15,290 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 06:05:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:15,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 06:05:15,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:05:15,376 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 06:05:15,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:05:15,405 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 06:05:15,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475750488] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:05:15,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:05:15,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-09-01 06:05:15,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605210912] [2023-09-01 06:05:15,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:05:15,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 06:05:15,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:05:15,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 06:05:15,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-09-01 06:05:15,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-09-01 06:05:15,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 47 transitions, 458 flow. Second operand has 9 states, 9 states have (on average 78.77777777777777) internal successors, (709), 9 states have internal predecessors, (709), 0 states have call successors, (0), 0 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 06:05:15,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:05:15,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-09-01 06:05:15,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:05:15,729 INFO L130 PetriNetUnfolder]: 260/517 cut-off events. [2023-09-01 06:05:15,730 INFO L131 PetriNetUnfolder]: For 1765/1765 co-relation queries the response was YES. [2023-09-01 06:05:15,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2746 conditions, 517 events. 260/517 cut-off events. For 1765/1765 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2583 event pairs, 9 based on Foata normal form. 36/479 useless extension candidates. Maximal degree in co-relation 2724. Up to 198 conditions per place. [2023-09-01 06:05:15,737 INFO L137 encePairwiseOnDemand]: 166/176 looper letters, 70 selfloop transitions, 86 changer transitions 0/156 dead transitions. [2023-09-01 06:05:15,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 156 transitions, 1605 flow [2023-09-01 06:05:15,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-09-01 06:05:15,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-09-01 06:05:15,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1514 transitions. [2023-09-01 06:05:15,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779040404040404 [2023-09-01 06:05:15,743 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1514 transitions. [2023-09-01 06:05:15,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1514 transitions. [2023-09-01 06:05:15,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:05:15,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1514 transitions. [2023-09-01 06:05:15,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 84.11111111111111) internal successors, (1514), 18 states have internal predecessors, (1514), 0 states have call successors, (0), 0 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 06:05:15,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 06:05:15,755 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 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 06:05:15,756 INFO L175 Difference]: Start difference. First operand has 37 places, 47 transitions, 458 flow. Second operand 18 states and 1514 transitions. [2023-09-01 06:05:15,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 156 transitions, 1605 flow [2023-09-01 06:05:15,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 156 transitions, 1469 flow, removed 24 selfloop flow, removed 2 redundant places. [2023-09-01 06:05:15,768 INFO L231 Difference]: Finished difference. Result has 59 places, 112 transitions, 1256 flow [2023-09-01 06:05:15,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1256, PETRI_PLACES=59, PETRI_TRANSITIONS=112} [2023-09-01 06:05:15,771 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 40 predicate places. [2023-09-01 06:05:15,772 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 112 transitions, 1256 flow [2023-09-01 06:05:15,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 78.77777777777777) internal successors, (709), 9 states have internal predecessors, (709), 0 states have call successors, (0), 0 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 06:05:15,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:05:15,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 06:05:15,783 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 06:05:15,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:05:15,980 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread_function_dataraceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:05:15,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:05:15,980 INFO L85 PathProgramCache]: Analyzing trace with hash -2101343043, now seen corresponding path program 1 times [2023-09-01 06:05:15,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:05:15,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769173955] [2023-09-01 06:05:15,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:15,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:05:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:16,021 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 06:05:16,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:05:16,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769173955] [2023-09-01 06:05:16,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769173955] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:05:16,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815554012] [2023-09-01 06:05:16,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:16,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:05:16,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:05:16,023 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 06:05:16,026 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 06:05:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:16,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 06:05:16,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:05:16,113 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 06:05:16,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:05:16,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815554012] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:05:16,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 06:05:16,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 06:05:16,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098125508] [2023-09-01 06:05:16,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:05:16,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 06:05:16,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:05:16,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 06:05:16,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 06:05:16,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 176 [2023-09-01 06:05:16,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 112 transitions, 1256 flow. Second operand has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 0 states have call successors, (0), 0 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 06:05:16,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:05:16,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 176 [2023-09-01 06:05:16,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:05:16,241 INFO L130 PetriNetUnfolder]: 209/393 cut-off events. [2023-09-01 06:05:16,242 INFO L131 PetriNetUnfolder]: For 1473/1473 co-relation queries the response was YES. [2023-09-01 06:05:16,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2371 conditions, 393 events. 209/393 cut-off events. For 1473/1473 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1656 event pairs, 20 based on Foata normal form. 40/379 useless extension candidates. Maximal degree in co-relation 2342. Up to 350 conditions per place. [2023-09-01 06:05:16,247 INFO L137 encePairwiseOnDemand]: 169/176 looper letters, 87 selfloop transitions, 10 changer transitions 0/97 dead transitions. [2023-09-01 06:05:16,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 97 transitions, 1294 flow [2023-09-01 06:05:16,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 06:05:16,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 06:05:16,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 503 transitions. [2023-09-01 06:05:16,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47632575757575757 [2023-09-01 06:05:16,249 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 503 transitions. [2023-09-01 06:05:16,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 503 transitions. [2023-09-01 06:05:16,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:05:16,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 503 transitions. [2023-09-01 06:05:16,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 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 06:05:16,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 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 06:05:16,252 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 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 06:05:16,252 INFO L175 Difference]: Start difference. First operand has 59 places, 112 transitions, 1256 flow. Second operand 6 states and 503 transitions. [2023-09-01 06:05:16,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 97 transitions, 1294 flow [2023-09-01 06:05:16,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 97 transitions, 1242 flow, removed 24 selfloop flow, removed 2 redundant places. [2023-09-01 06:05:16,264 INFO L231 Difference]: Finished difference. Result has 57 places, 88 transitions, 1008 flow [2023-09-01 06:05:16,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1008, PETRI_PLACES=57, PETRI_TRANSITIONS=88} [2023-09-01 06:05:16,265 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 38 predicate places. [2023-09-01 06:05:16,266 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 88 transitions, 1008 flow [2023-09-01 06:05:16,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 0 states have call successors, (0), 0 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 06:05:16,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:05:16,266 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-09-01 06:05:16,275 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 06:05:16,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:05:16,472 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread_function_dataraceErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:05:16,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:05:16,473 INFO L85 PathProgramCache]: Analyzing trace with hash -717124171, now seen corresponding path program 1 times [2023-09-01 06:05:16,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:05:16,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062926753] [2023-09-01 06:05:16,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:16,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:05:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 06:05:16,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:05:16,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062926753] [2023-09-01 06:05:16,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062926753] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:05:16,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:05:16,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:05:16,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142308795] [2023-09-01 06:05:16,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:05:16,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:05:16,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:05:16,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:05:16,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:05:16,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 176 [2023-09-01 06:05:16,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 88 transitions, 1008 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 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 06:05:16,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:05:16,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 176 [2023-09-01 06:05:16,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:05:16,574 INFO L130 PetriNetUnfolder]: 182/348 cut-off events. [2023-09-01 06:05:16,575 INFO L131 PetriNetUnfolder]: For 1522/1522 co-relation queries the response was YES. [2023-09-01 06:05:16,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2052 conditions, 348 events. 182/348 cut-off events. For 1522/1522 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1475 event pairs, 26 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 2022. Up to 190 conditions per place. [2023-09-01 06:05:16,579 INFO L137 encePairwiseOnDemand]: 171/176 looper letters, 67 selfloop transitions, 30 changer transitions 0/97 dead transitions. [2023-09-01 06:05:16,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 97 transitions, 1278 flow [2023-09-01 06:05:16,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:05:16,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:05:16,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2023-09-01 06:05:16,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962121212121212 [2023-09-01 06:05:16,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2023-09-01 06:05:16,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2023-09-01 06:05:16,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:05:16,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2023-09-01 06:05:16,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 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 06:05:16,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 06:05:16,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 06:05:16,583 INFO L175 Difference]: Start difference. First operand has 57 places, 88 transitions, 1008 flow. Second operand 3 states and 262 transitions. [2023-09-01 06:05:16,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 97 transitions, 1278 flow [2023-09-01 06:05:16,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 97 transitions, 1236 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 06:05:16,594 INFO L231 Difference]: Finished difference. Result has 54 places, 81 transitions, 938 flow [2023-09-01 06:05:16,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=938, PETRI_PLACES=54, PETRI_TRANSITIONS=81} [2023-09-01 06:05:16,595 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 35 predicate places. [2023-09-01 06:05:16,595 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 81 transitions, 938 flow [2023-09-01 06:05:16,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 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 06:05:16,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:05:16,596 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-09-01 06:05:16,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:05:16,596 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread_function_dataraceErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:05:16,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:05:16,597 INFO L85 PathProgramCache]: Analyzing trace with hash -717124188, now seen corresponding path program 1 times [2023-09-01 06:05:16,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:05:16,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956360453] [2023-09-01 06:05:16,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:16,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:05:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:16,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:05:16,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:05:16,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956360453] [2023-09-01 06:05:16,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956360453] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:05:16,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:05:16,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:05:16,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886474322] [2023-09-01 06:05:16,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:05:16,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:05:16,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:05:16,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:05:16,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:05:16,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 176 [2023-09-01 06:05:16,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 81 transitions, 938 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:05:16,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:05:16,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 176 [2023-09-01 06:05:16,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:05:16,684 INFO L130 PetriNetUnfolder]: 155/303 cut-off events. [2023-09-01 06:05:16,685 INFO L131 PetriNetUnfolder]: For 1733/1733 co-relation queries the response was YES. [2023-09-01 06:05:16,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1824 conditions, 303 events. 155/303 cut-off events. For 1733/1733 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1251 event pairs, 18 based on Foata normal form. 27/330 useless extension candidates. Maximal degree in co-relation 1796. Up to 289 conditions per place. [2023-09-01 06:05:16,688 INFO L137 encePairwiseOnDemand]: 174/176 looper letters, 82 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2023-09-01 06:05:16,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 83 transitions, 1106 flow [2023-09-01 06:05:16,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:05:16,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:05:16,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2023-09-01 06:05:16,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962121212121212 [2023-09-01 06:05:16,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2023-09-01 06:05:16,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2023-09-01 06:05:16,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:05:16,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2023-09-01 06:05:16,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 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 06:05:16,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 06:05:16,693 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 06:05:16,693 INFO L175 Difference]: Start difference. First operand has 54 places, 81 transitions, 938 flow. Second operand 3 states and 262 transitions. [2023-09-01 06:05:16,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 83 transitions, 1106 flow [2023-09-01 06:05:16,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 83 transitions, 1076 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:05:16,703 INFO L231 Difference]: Finished difference. Result has 54 places, 74 transitions, 824 flow [2023-09-01 06:05:16,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=824, PETRI_PLACES=54, PETRI_TRANSITIONS=74} [2023-09-01 06:05:16,704 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 35 predicate places. [2023-09-01 06:05:16,704 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 74 transitions, 824 flow [2023-09-01 06:05:16,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:05:16,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:05:16,705 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-09-01 06:05:16,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:05:16,706 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:05:16,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:05:16,706 INFO L85 PathProgramCache]: Analyzing trace with hash -236273720, now seen corresponding path program 2 times [2023-09-01 06:05:16,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:05:16,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320605692] [2023-09-01 06:05:16,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:16,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:05:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:16,763 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 06:05:16,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:05:16,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320605692] [2023-09-01 06:05:16,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320605692] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:05:16,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505545097] [2023-09-01 06:05:16,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 06:05:16,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:05:16,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:05:16,766 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 06:05:16,789 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 06:05:16,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 06:05:16,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:05:16,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 06:05:16,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:05:16,863 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 06:05:16,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:05:16,916 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 06:05:16,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505545097] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:05:16,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:05:16,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-09-01 06:05:16,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850652487] [2023-09-01 06:05:16,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:05:16,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 06:05:16,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:05:16,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 06:05:16,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 06:05:16,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 176 [2023-09-01 06:05:16,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 74 transitions, 824 flow. Second operand has 13 states, 13 states have (on average 84.53846153846153) internal successors, (1099), 13 states have internal predecessors, (1099), 0 states have call successors, (0), 0 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 06:05:16,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:05:16,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 176 [2023-09-01 06:05:16,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:05:17,055 INFO L130 PetriNetUnfolder]: 227/447 cut-off events. [2023-09-01 06:05:17,055 INFO L131 PetriNetUnfolder]: For 2747/2747 co-relation queries the response was YES. [2023-09-01 06:05:17,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2619 conditions, 447 events. 227/447 cut-off events. For 2747/2747 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1818 event pairs, 31 based on Foata normal form. 42/489 useless extension candidates. Maximal degree in co-relation 2590. Up to 262 conditions per place. [2023-09-01 06:05:17,060 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 66 selfloop transitions, 85 changer transitions 0/151 dead transitions. [2023-09-01 06:05:17,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 151 transitions, 1868 flow [2023-09-01 06:05:17,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 06:05:17,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 06:05:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1071 transitions. [2023-09-01 06:05:17,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071022727272727 [2023-09-01 06:05:17,063 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1071 transitions. [2023-09-01 06:05:17,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1071 transitions. [2023-09-01 06:05:17,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:05:17,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1071 transitions. [2023-09-01 06:05:17,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 89.25) internal successors, (1071), 12 states have internal predecessors, (1071), 0 states have call successors, (0), 0 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 06:05:17,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 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 06:05:17,070 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 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 06:05:17,070 INFO L175 Difference]: Start difference. First operand has 54 places, 74 transitions, 824 flow. Second operand 12 states and 1071 transitions. [2023-09-01 06:05:17,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 151 transitions, 1868 flow [2023-09-01 06:05:17,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 151 transitions, 1857 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:05:17,089 INFO L231 Difference]: Finished difference. Result has 71 places, 123 transitions, 1741 flow [2023-09-01 06:05:17,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1741, PETRI_PLACES=71, PETRI_TRANSITIONS=123} [2023-09-01 06:05:17,091 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 52 predicate places. [2023-09-01 06:05:17,091 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 123 transitions, 1741 flow [2023-09-01 06:05:17,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 84.53846153846153) internal successors, (1099), 13 states have internal predecessors, (1099), 0 states have call successors, (0), 0 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 06:05:17,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:05:17,092 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:05:17,110 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 06:05:17,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-09-01 06:05:17,311 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:05:17,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:05:17,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1470633633, now seen corresponding path program 1 times [2023-09-01 06:05:17,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:05:17,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068437410] [2023-09-01 06:05:17,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:17,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:05:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:17,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:05:17,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:05:17,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068437410] [2023-09-01 06:05:17,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068437410] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:05:17,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387604502] [2023-09-01 06:05:17,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:17,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:05:17,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:05:17,401 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 06:05:17,403 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 06:05:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:17,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 06:05:17,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:05:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:05:17,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:05:17,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:05:17,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387604502] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:05:17,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:05:17,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-09-01 06:05:17,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552612295] [2023-09-01 06:05:17,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:05:17,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 06:05:17,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:05:17,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 06:05:17,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2023-09-01 06:05:17,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 176 [2023-09-01 06:05:17,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 123 transitions, 1741 flow. Second operand has 15 states, 15 states have (on average 79.66666666666667) internal successors, (1195), 15 states have internal predecessors, (1195), 0 states have call successors, (0), 0 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 06:05:17,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:05:17,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 176 [2023-09-01 06:05:17,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:05:18,022 INFO L130 PetriNetUnfolder]: 347/686 cut-off events. [2023-09-01 06:05:18,022 INFO L131 PetriNetUnfolder]: For 8543/8543 co-relation queries the response was YES. [2023-09-01 06:05:18,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4621 conditions, 686 events. 347/686 cut-off events. For 8543/8543 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3235 event pairs, 12 based on Foata normal form. 68/754 useless extension candidates. Maximal degree in co-relation 4584. Up to 297 conditions per place. [2023-09-01 06:05:18,029 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 99 selfloop transitions, 180 changer transitions 0/279 dead transitions. [2023-09-01 06:05:18,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 279 transitions, 3866 flow [2023-09-01 06:05:18,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-09-01 06:05:18,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-09-01 06:05:18,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2758 transitions. [2023-09-01 06:05:18,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474862258953168 [2023-09-01 06:05:18,036 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2758 transitions. [2023-09-01 06:05:18,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2758 transitions. [2023-09-01 06:05:18,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:05:18,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2758 transitions. [2023-09-01 06:05:18,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 83.57575757575758) internal successors, (2758), 33 states have internal predecessors, (2758), 0 states have call successors, (0), 0 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 06:05:18,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 176.0) internal successors, (5984), 34 states have internal predecessors, (5984), 0 states have call successors, (0), 0 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 06:05:18,052 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 176.0) internal successors, (5984), 34 states have internal predecessors, (5984), 0 states have call successors, (0), 0 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 06:05:18,052 INFO L175 Difference]: Start difference. First operand has 71 places, 123 transitions, 1741 flow. Second operand 33 states and 2758 transitions. [2023-09-01 06:05:18,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 279 transitions, 3866 flow [2023-09-01 06:05:18,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 279 transitions, 3701 flow, removed 73 selfloop flow, removed 3 redundant places. [2023-09-01 06:05:18,076 INFO L231 Difference]: Finished difference. Result has 118 places, 206 transitions, 3410 flow [2023-09-01 06:05:18,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3410, PETRI_PLACES=118, PETRI_TRANSITIONS=206} [2023-09-01 06:05:18,076 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 99 predicate places. [2023-09-01 06:05:18,077 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 206 transitions, 3410 flow [2023-09-01 06:05:18,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 79.66666666666667) internal successors, (1195), 15 states have internal predecessors, (1195), 0 states have call successors, (0), 0 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 06:05:18,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:05:18,077 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-09-01 06:05:18,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 06:05:18,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:05:18,283 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:05:18,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:05:18,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1338366197, now seen corresponding path program 1 times [2023-09-01 06:05:18,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:05:18,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547536156] [2023-09-01 06:05:18,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:18,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:05:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:18,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:05:18,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:05:18,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547536156] [2023-09-01 06:05:18,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547536156] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:05:18,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141356144] [2023-09-01 06:05:18,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:18,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:05:18,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:05:18,363 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:05:18,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 06:05:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:18,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 06:05:18,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:05:18,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:05:18,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:05:18,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:05:18,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141356144] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:05:18,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:05:18,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-09-01 06:05:18,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454347723] [2023-09-01 06:05:18,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:05:18,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 06:05:18,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:05:18,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 06:05:18,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-09-01 06:05:18,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-09-01 06:05:18,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 206 transitions, 3410 flow. Second operand has 15 states, 15 states have (on average 78.66666666666667) internal successors, (1180), 15 states have internal predecessors, (1180), 0 states have call successors, (0), 0 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 06:05:18,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:05:18,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-09-01 06:05:18,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:05:19,147 INFO L130 PetriNetUnfolder]: 631/1248 cut-off events. [2023-09-01 06:05:19,147 INFO L131 PetriNetUnfolder]: For 32639/32639 co-relation queries the response was YES. [2023-09-01 06:05:19,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10048 conditions, 1248 events. 631/1248 cut-off events. For 32639/32639 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7037 event pairs, 9 based on Foata normal form. 62/1310 useless extension candidates. Maximal degree in co-relation 9992. Up to 539 conditions per place. [2023-09-01 06:05:19,164 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 159 selfloop transitions, 303 changer transitions 0/462 dead transitions. [2023-09-01 06:05:19,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 462 transitions, 7913 flow [2023-09-01 06:05:19,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-09-01 06:05:19,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-09-01 06:05:19,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2890 transitions. [2023-09-01 06:05:19,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46915584415584416 [2023-09-01 06:05:19,171 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2890 transitions. [2023-09-01 06:05:19,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2890 transitions. [2023-09-01 06:05:19,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:05:19,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2890 transitions. [2023-09-01 06:05:19,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 82.57142857142857) internal successors, (2890), 35 states have internal predecessors, (2890), 0 states have call successors, (0), 0 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 06:05:19,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 06:05:19,187 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 06:05:19,187 INFO L175 Difference]: Start difference. First operand has 118 places, 206 transitions, 3410 flow. Second operand 35 states and 2890 transitions. [2023-09-01 06:05:19,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 462 transitions, 7913 flow [2023-09-01 06:05:19,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 462 transitions, 7300 flow, removed 268 selfloop flow, removed 10 redundant places. [2023-09-01 06:05:19,328 INFO L231 Difference]: Finished difference. Result has 159 places, 367 transitions, 6696 flow [2023-09-01 06:05:19,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6696, PETRI_PLACES=159, PETRI_TRANSITIONS=367} [2023-09-01 06:05:19,329 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 140 predicate places. [2023-09-01 06:05:19,329 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 367 transitions, 6696 flow [2023-09-01 06:05:19,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 78.66666666666667) internal successors, (1180), 15 states have internal predecessors, (1180), 0 states have call successors, (0), 0 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 06:05:19,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:05:19,330 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1] [2023-09-01 06:05:19,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 06:05:19,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:05:19,537 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:05:19,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:05:19,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1178970245, now seen corresponding path program 2 times [2023-09-01 06:05:19,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:05:19,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418088294] [2023-09-01 06:05:19,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:19,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:05:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:19,657 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 06:05:19,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:05:19,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418088294] [2023-09-01 06:05:19,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418088294] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:05:19,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553861785] [2023-09-01 06:05:19,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 06:05:19,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:05:19,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:05:19,659 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:05:19,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 06:05:19,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 06:05:19,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:05:19,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 06:05:19,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:05:19,762 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 06:05:19,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:05:19,864 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 06:05:19,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553861785] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:05:19,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:05:19,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-09-01 06:05:19,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093287557] [2023-09-01 06:05:19,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:05:19,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-09-01 06:05:19,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:05:19,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-09-01 06:05:19,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2023-09-01 06:05:19,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-09-01 06:05:19,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 367 transitions, 6696 flow. Second operand has 21 states, 21 states have (on average 78.47619047619048) internal successors, (1648), 21 states have internal predecessors, (1648), 0 states have call successors, (0), 0 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 06:05:19,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:05:19,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-09-01 06:05:19,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:05:21,564 INFO L130 PetriNetUnfolder]: 1313/2603 cut-off events. [2023-09-01 06:05:21,565 INFO L131 PetriNetUnfolder]: For 211360/211360 co-relation queries the response was YES. [2023-09-01 06:05:21,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22310 conditions, 2603 events. 1313/2603 cut-off events. For 211360/211360 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16955 event pairs, 9 based on Foata normal form. 320/2923 useless extension candidates. Maximal degree in co-relation 22236. Up to 1153 conditions per place. [2023-09-01 06:05:21,619 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 220 selfloop transitions, 690 changer transitions 0/910 dead transitions. [2023-09-01 06:05:21,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 910 transitions, 16801 flow [2023-09-01 06:05:21,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-09-01 06:05:21,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-09-01 06:05:21,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 5541 transitions. [2023-09-01 06:05:21,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46989484396200815 [2023-09-01 06:05:21,632 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 5541 transitions. [2023-09-01 06:05:21,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 5541 transitions. [2023-09-01 06:05:21,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:05:21,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 5541 transitions. [2023-09-01 06:05:21,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 82.70149253731343) internal successors, (5541), 67 states have internal predecessors, (5541), 0 states have call successors, (0), 0 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 06:05:21,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 176.0) internal successors, (11968), 68 states have internal predecessors, (11968), 0 states have call successors, (0), 0 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 06:05:21,680 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 176.0) internal successors, (11968), 68 states have internal predecessors, (11968), 0 states have call successors, (0), 0 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 06:05:21,680 INFO L175 Difference]: Start difference. First operand has 159 places, 367 transitions, 6696 flow. Second operand 67 states and 5541 transitions. [2023-09-01 06:05:21,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 910 transitions, 16801 flow [2023-09-01 06:05:21,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 910 transitions, 16303 flow, removed 232 selfloop flow, removed 10 redundant places. [2023-09-01 06:05:21,990 INFO L231 Difference]: Finished difference. Result has 243 places, 755 transitions, 15726 flow [2023-09-01 06:05:21,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=6478, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=339, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=15726, PETRI_PLACES=243, PETRI_TRANSITIONS=755} [2023-09-01 06:05:21,991 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 224 predicate places. [2023-09-01 06:05:21,992 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 755 transitions, 15726 flow [2023-09-01 06:05:21,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 78.47619047619048) internal successors, (1648), 21 states have internal predecessors, (1648), 0 states have call successors, (0), 0 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 06:05:21,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:05:21,993 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:05:22,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 06:05:22,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-09-01 06:05:22,199 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:05:22,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:05:22,200 INFO L85 PathProgramCache]: Analyzing trace with hash 45611997, now seen corresponding path program 3 times [2023-09-01 06:05:22,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:05:22,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469960484] [2023-09-01 06:05:22,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:22,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:05:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:22,372 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:05:22,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:05:22,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469960484] [2023-09-01 06:05:22,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469960484] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:05:22,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942862393] [2023-09-01 06:05:22,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 06:05:22,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:05:22,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:05:22,374 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:05:22,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 06:05:22,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-09-01 06:05:22,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:05:22,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 15 conjunts are in the unsatisfiable core [2023-09-01 06:05:22,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:05:22,499 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:05:22,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:05:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:05:22,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942862393] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:05:22,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:05:22,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2023-09-01 06:05:22,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67756862] [2023-09-01 06:05:22,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:05:22,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-09-01 06:05:22,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:05:22,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-09-01 06:05:22,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=456, Unknown=0, NotChecked=0, Total=812 [2023-09-01 06:05:22,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 176 [2023-09-01 06:05:22,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 755 transitions, 15726 flow. Second operand has 29 states, 29 states have (on average 79.34482758620689) internal successors, (2301), 29 states have internal predecessors, (2301), 0 states have call successors, (0), 0 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 06:05:22,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:05:22,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 176 [2023-09-01 06:05:22,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:05:25,773 INFO L130 PetriNetUnfolder]: 2749/5472 cut-off events. [2023-09-01 06:05:25,774 INFO L131 PetriNetUnfolder]: For 1134551/1134551 co-relation queries the response was YES. [2023-09-01 06:05:25,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52350 conditions, 5472 events. 2749/5472 cut-off events. For 1134551/1134551 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 38510 event pairs, 125 based on Foata normal form. 571/6043 useless extension candidates. Maximal degree in co-relation 52249. Up to 2519 conditions per place. [2023-09-01 06:05:25,875 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 361 selfloop transitions, 1479 changer transitions 0/1840 dead transitions. [2023-09-01 06:05:25,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 1840 transitions, 40057 flow [2023-09-01 06:05:25,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-09-01 06:05:25,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-09-01 06:05:25,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 5663 transitions. [2023-09-01 06:05:25,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731784759358289 [2023-09-01 06:05:25,897 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 5663 transitions. [2023-09-01 06:05:25,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 5663 transitions. [2023-09-01 06:05:25,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:05:25,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 5663 transitions. [2023-09-01 06:05:25,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 83.27941176470588) internal successors, (5663), 68 states have internal predecessors, (5663), 0 states have call successors, (0), 0 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 06:05:25,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 176.0) internal successors, (12144), 69 states have internal predecessors, (12144), 0 states have call successors, (0), 0 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 06:05:25,941 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 176.0) internal successors, (12144), 69 states have internal predecessors, (12144), 0 states have call successors, (0), 0 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 06:05:25,941 INFO L175 Difference]: Start difference. First operand has 243 places, 755 transitions, 15726 flow. Second operand 68 states and 5663 transitions. [2023-09-01 06:05:25,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 1840 transitions, 40057 flow [2023-09-01 06:05:27,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 1840 transitions, 34895 flow, removed 2394 selfloop flow, removed 22 redundant places. [2023-09-01 06:05:27,319 INFO L231 Difference]: Finished difference. Result has 327 places, 1709 transitions, 35900 flow [2023-09-01 06:05:27,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=14046, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=755, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=627, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=35900, PETRI_PLACES=327, PETRI_TRANSITIONS=1709} [2023-09-01 06:05:27,321 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 308 predicate places. [2023-09-01 06:05:27,321 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 1709 transitions, 35900 flow [2023-09-01 06:05:27,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 79.34482758620689) internal successors, (2301), 29 states have internal predecessors, (2301), 0 states have call successors, (0), 0 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 06:05:27,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:05:27,322 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:05:27,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 06:05:27,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 06:05:27,523 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:05:27,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:05:27,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1240625739, now seen corresponding path program 4 times [2023-09-01 06:05:27,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:05:27,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270123540] [2023-09-01 06:05:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:27,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:05:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:27,725 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:05:27,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:05:27,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270123540] [2023-09-01 06:05:27,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270123540] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:05:27,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742098968] [2023-09-01 06:05:27,727 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 06:05:27,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:05:27,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:05:27,728 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:05:27,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 06:05:27,800 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 06:05:27,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:05:27,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 15 conjunts are in the unsatisfiable core [2023-09-01 06:05:27,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:05:27,840 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:05:27,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:05:28,084 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:05:28,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742098968] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:05:28,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:05:28,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2023-09-01 06:05:28,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2164027] [2023-09-01 06:05:28,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:05:28,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-09-01 06:05:28,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:05:28,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-09-01 06:05:28,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=532, Unknown=0, NotChecked=0, Total=812 [2023-09-01 06:05:28,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 176 [2023-09-01 06:05:28,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 1709 transitions, 35900 flow. Second operand has 29 states, 29 states have (on average 79.34482758620689) internal successors, (2301), 29 states have internal predecessors, (2301), 0 states have call successors, (0), 0 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 06:05:28,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:05:28,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 176 [2023-09-01 06:05:28,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:05:35,908 INFO L130 PetriNetUnfolder]: 5609/11182 cut-off events. [2023-09-01 06:05:35,909 INFO L131 PetriNetUnfolder]: For 3693663/3693663 co-relation queries the response was YES. [2023-09-01 06:05:35,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112179 conditions, 11182 events. 5609/11182 cut-off events. For 3693663/3693663 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 90961 event pairs, 48 based on Foata normal form. 793/11975 useless extension candidates. Maximal degree in co-relation 112038. Up to 5195 conditions per place. [2023-09-01 06:05:36,077 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 582 selfloop transitions, 3439 changer transitions 0/4021 dead transitions. [2023-09-01 06:05:36,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 4021 transitions, 87098 flow [2023-09-01 06:05:36,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-09-01 06:05:36,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2023-09-01 06:05:36,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 8692 transitions. [2023-09-01 06:05:36,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748688811188811 [2023-09-01 06:05:36,089 INFO L72 ComplementDD]: Start complementDD. Operand 104 states and 8692 transitions. [2023-09-01 06:05:36,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 8692 transitions. [2023-09-01 06:05:36,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:05:36,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 104 states and 8692 transitions. [2023-09-01 06:05:36,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 105 states, 104 states have (on average 83.57692307692308) internal successors, (8692), 104 states have internal predecessors, (8692), 0 states have call successors, (0), 0 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 06:05:36,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 105 states, 105 states have (on average 176.0) internal successors, (18480), 105 states have internal predecessors, (18480), 0 states have call successors, (0), 0 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 06:05:36,139 INFO L81 ComplementDD]: Finished complementDD. Result has 105 states, 105 states have (on average 176.0) internal successors, (18480), 105 states have internal predecessors, (18480), 0 states have call successors, (0), 0 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 06:05:36,140 INFO L175 Difference]: Start difference. First operand has 327 places, 1709 transitions, 35900 flow. Second operand 104 states and 8692 transitions. [2023-09-01 06:05:36,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 4021 transitions, 87098 flow [2023-09-01 06:05:43,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 4021 transitions, 80138 flow, removed 2330 selfloop flow, removed 23 redundant places. [2023-09-01 06:05:43,404 INFO L231 Difference]: Finished difference. Result has 458 places, 3760 transitions, 81692 flow [2023-09-01 06:05:43,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=32838, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1578, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=104, PETRI_FLOW=81692, PETRI_PLACES=458, PETRI_TRANSITIONS=3760} [2023-09-01 06:05:43,406 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 439 predicate places. [2023-09-01 06:05:43,406 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 3760 transitions, 81692 flow [2023-09-01 06:05:43,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 79.34482758620689) internal successors, (2301), 29 states have internal predecessors, (2301), 0 states have call successors, (0), 0 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 06:05:43,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:05:43,407 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:05:43,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 06:05:43,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 06:05:43,607 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:05:43,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:05:43,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1386268361, now seen corresponding path program 5 times [2023-09-01 06:05:43,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:05:43,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048133194] [2023-09-01 06:05:43,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:05:43,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:05:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:05:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:05:43,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:05:43,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048133194] [2023-09-01 06:05:43,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048133194] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:05:43,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130885752] [2023-09-01 06:05:43,791 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 06:05:43,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:05:43,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:05:43,793 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:05:43,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 06:05:43,863 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-09-01 06:05:43,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:05:43,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 06:05:43,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:05:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:05:43,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:05:44,083 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:05:44,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130885752] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:05:44,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:05:44,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 29 [2023-09-01 06:05:44,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387258555] [2023-09-01 06:05:44,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:05:44,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-09-01 06:05:44,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:05:44,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-09-01 06:05:44,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=603, Unknown=0, NotChecked=0, Total=930 [2023-09-01 06:05:44,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 176 [2023-09-01 06:05:44,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 3760 transitions, 81692 flow. Second operand has 31 states, 31 states have (on average 79.3225806451613) internal successors, (2459), 31 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:05:44,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:05:44,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 176 [2023-09-01 06:05:44,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:06:12,094 INFO L130 PetriNetUnfolder]: 10529/21014 cut-off events. [2023-09-01 06:06:12,094 INFO L131 PetriNetUnfolder]: For 15420732/15420732 co-relation queries the response was YES. [2023-09-01 06:06:12,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224715 conditions, 21014 events. 10529/21014 cut-off events. For 15420732/15420732 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 191137 event pairs, 75 based on Foata normal form. 1809/22823 useless extension candidates. Maximal degree in co-relation 224525. Up to 9861 conditions per place. [2023-09-01 06:06:12,643 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 742 selfloop transitions, 6525 changer transitions 0/7267 dead transitions. [2023-09-01 06:06:12,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 7267 transitions, 167991 flow [2023-09-01 06:06:12,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2023-09-01 06:06:12,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2023-09-01 06:06:12,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 10290 transitions. [2023-09-01 06:06:12,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47533259423503327 [2023-09-01 06:06:12,656 INFO L72 ComplementDD]: Start complementDD. Operand 123 states and 10290 transitions. [2023-09-01 06:06:12,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 10290 transitions. [2023-09-01 06:06:12,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:06:12,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 123 states and 10290 transitions. [2023-09-01 06:06:12,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 124 states, 123 states have (on average 83.65853658536585) internal successors, (10290), 123 states have internal predecessors, (10290), 0 states have call successors, (0), 0 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 06:06:12,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 124 states, 124 states have (on average 176.0) internal successors, (21824), 124 states have internal predecessors, (21824), 0 states have call successors, (0), 0 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 06:06:12,706 INFO L81 ComplementDD]: Finished complementDD. Result has 124 states, 124 states have (on average 176.0) internal successors, (21824), 124 states have internal predecessors, (21824), 0 states have call successors, (0), 0 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 06:06:12,707 INFO L175 Difference]: Start difference. First operand has 458 places, 3760 transitions, 81692 flow. Second operand 123 states and 10290 transitions. [2023-09-01 06:06:12,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 7267 transitions, 167991 flow [2023-09-01 06:06:40,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 7267 transitions, 160746 flow, removed 3501 selfloop flow, removed 21 redundant places. [2023-09-01 06:06:41,152 INFO L231 Difference]: Finished difference. Result has 621 places, 6976 transitions, 166883 flow [2023-09-01 06:06:41,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=78826, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3535, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=123, PETRI_FLOW=166883, PETRI_PLACES=621, PETRI_TRANSITIONS=6976} [2023-09-01 06:06:41,157 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 602 predicate places. [2023-09-01 06:06:41,157 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 6976 transitions, 166883 flow [2023-09-01 06:06:41,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 79.3225806451613) internal successors, (2459), 31 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:06:41,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:06:41,158 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1] [2023-09-01 06:06:41,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 06:06:41,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 06:06:41,364 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:06:41,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:06:41,365 INFO L85 PathProgramCache]: Analyzing trace with hash -608310218, now seen corresponding path program 2 times [2023-09-01 06:06:41,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:06:41,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871497081] [2023-09-01 06:06:41,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:06:41,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:06:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:06:41,573 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:06:41,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:06:41,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871497081] [2023-09-01 06:06:41,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871497081] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:06:41,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869942132] [2023-09-01 06:06:41,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 06:06:41,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:06:41,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:06:41,575 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:06:41,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 06:06:41,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 06:06:41,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:06:41,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 06:06:41,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:06:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:06:41,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:06:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:06:41,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869942132] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:06:41,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:06:41,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2023-09-01 06:06:41,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359873798] [2023-09-01 06:06:41,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:06:41,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-09-01 06:06:41,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:06:41,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-09-01 06:06:41,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=766, Unknown=0, NotChecked=0, Total=1056 [2023-09-01 06:06:41,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-09-01 06:06:41,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 6976 transitions, 166883 flow. Second operand has 33 states, 33 states have (on average 78.21212121212122) internal successors, (2581), 33 states have internal predecessors, (2581), 0 states have call successors, (0), 0 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 06:06:41,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:06:41,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-09-01 06:06:41,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:08:53,148 INFO L130 PetriNetUnfolder]: 21662/43241 cut-off events. [2023-09-01 06:08:53,148 INFO L131 PetriNetUnfolder]: For 24666319/24666319 co-relation queries the response was YES. [2023-09-01 06:08:55,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546171 conditions, 43241 events. 21662/43241 cut-off events. For 24666319/24666319 co-relation queries the response was YES. Maximal size of possible extension queue 2056. Compared 444772 event pairs, 65 based on Foata normal form. 749/43990 useless extension candidates. Maximal degree in co-relation 545919. Up to 20141 conditions per place. [2023-09-01 06:08:55,356 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 2882 selfloop transitions, 12196 changer transitions 0/15078 dead transitions. [2023-09-01 06:08:55,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 779 places, 15078 transitions, 381591 flow [2023-09-01 06:08:55,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2023-09-01 06:08:55,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2023-09-01 06:08:55,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 13151 transitions. [2023-09-01 06:08:55,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46994711263579186 [2023-09-01 06:08:55,371 INFO L72 ComplementDD]: Start complementDD. Operand 159 states and 13151 transitions. [2023-09-01 06:08:55,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 13151 transitions. [2023-09-01 06:08:55,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:08:55,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 159 states and 13151 transitions. [2023-09-01 06:08:55,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 160 states, 159 states have (on average 82.71069182389937) internal successors, (13151), 159 states have internal predecessors, (13151), 0 states have call successors, (0), 0 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 06:08:55,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 160 states, 160 states have (on average 176.0) internal successors, (28160), 160 states have internal predecessors, (28160), 0 states have call successors, (0), 0 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 06:08:55,424 INFO L81 ComplementDD]: Finished complementDD. Result has 160 states, 160 states have (on average 176.0) internal successors, (28160), 160 states have internal predecessors, (28160), 0 states have call successors, (0), 0 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 06:08:55,424 INFO L175 Difference]: Start difference. First operand has 621 places, 6976 transitions, 166883 flow. Second operand 159 states and 13151 transitions. [2023-09-01 06:08:55,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 779 places, 15078 transitions, 381591 flow [2023-09-01 06:11:54,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 748 places, 15078 transitions, 367076 flow, removed 7141 selfloop flow, removed 31 redundant places. [2023-09-01 06:11:54,720 INFO L231 Difference]: Finished difference. Result has 802 places, 13866 transitions, 355420 flow [2023-09-01 06:11:54,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=161494, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6976, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5743, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=974, PETRI_DIFFERENCE_SUBTRAHEND_STATES=159, PETRI_FLOW=355420, PETRI_PLACES=802, PETRI_TRANSITIONS=13866} [2023-09-01 06:11:54,725 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 783 predicate places. [2023-09-01 06:11:54,725 INFO L495 AbstractCegarLoop]: Abstraction has has 802 places, 13866 transitions, 355420 flow [2023-09-01 06:11:54,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 78.21212121212122) internal successors, (2581), 33 states have internal predecessors, (2581), 0 states have call successors, (0), 0 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 06:11:54,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:11:54,726 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:11:54,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-09-01 06:11:54,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 06:11:54,926 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:11:54,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:11:54,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1178120843, now seen corresponding path program 6 times [2023-09-01 06:11:54,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:11:54,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459999235] [2023-09-01 06:11:54,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:11:54,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:11:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:11:55,194 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:11:55,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:11:55,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459999235] [2023-09-01 06:11:55,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459999235] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:11:55,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134066844] [2023-09-01 06:11:55,194 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 06:11:55,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:11:55,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:11:55,196 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:11:55,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 06:11:55,263 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-09-01 06:11:55,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:11:55,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 06:11:55,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:11:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:11:55,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:11:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:11:55,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134066844] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:11:55,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:11:55,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 39 [2023-09-01 06:11:55,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307496472] [2023-09-01 06:11:55,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:11:55,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-09-01 06:11:55,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:11:55,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-09-01 06:11:55,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1018, Unknown=0, NotChecked=0, Total=1640 [2023-09-01 06:11:55,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 176 [2023-09-01 06:11:55,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 802 places, 13866 transitions, 355420 flow. Second operand has 41 states, 41 states have (on average 79.2439024390244) internal successors, (3249), 41 states have internal predecessors, (3249), 0 states have call successors, (0), 0 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 06:11:55,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:11:55,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 176 [2023-09-01 06:11:55,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15