./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.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-1.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 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --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 06:02:02,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:02:02,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:02:02,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:02:02,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:02:02,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:02:02,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:02:02,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:02:02,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:02:02,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:02:02,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:02:02,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:02:02,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:02:02,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:02:02,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:02:02,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:02:02,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:02:02,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:02:02,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:02:02,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:02:02,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:02:02,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:02:02,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:02:02,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:02:02,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:02:02,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:02:02,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:02:02,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:02:02,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:02:02,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:02:02,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:02:02,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:02:02,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:02:02,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:02:02,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:02:02,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:02:02,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:02:02,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:02:02,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:02:02,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:02:02,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:02:02,854 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:02:02,884 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:02:02,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:02:02,885 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:02:02,885 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:02:02,886 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:02:02,886 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:02:02,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:02:02,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:02:02,887 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:02:02,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:02:02,887 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:02:02,888 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:02:02,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:02:02,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:02:02,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:02:02,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:02:02,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:02:02,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:02:02,889 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:02:02,889 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:02:02,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:02:02,889 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:02:02,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:02:02,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:02:02,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:02:02,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:02:02,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:02:02,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:02:02,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:02:02,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:02:02,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:02:02,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:02:02,891 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:02:02,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:02:02,891 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:02:02,891 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:02:02,891 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:02:02,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:02:03,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:02:03,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:02:03,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:02:03,163 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:02:03,163 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:02:03,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-09-01 06:02:04,223 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:02:04,476 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:02:04,477 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-09-01 06:02:04,506 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db8669d97/405dd79a3577410297c1eb3d2a7db168/FLAG67b39ee32 [2023-09-01 06:02:04,520 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db8669d97/405dd79a3577410297c1eb3d2a7db168 [2023-09-01 06:02:04,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:02:04,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:02:04,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:02:04,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:02:04,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:02:04,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:02:04" (1/1) ... [2023-09-01 06:02:04,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bf03b60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:02:04, skipping insertion in model container [2023-09-01 06:02:04,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:02:04" (1/1) ... [2023-09-01 06:02:04,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:02:04,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:02:04,718 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-1.i[820,833] [2023-09-01 06:02:05,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:02:05,041 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:02:05,051 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-1.i[820,833] [2023-09-01 06:02:05,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:02:05,167 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:02:05,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:02:05 WrapperNode [2023-09-01 06:02:05,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:02:05,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:02:05,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:02:05,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:02:05,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:02:05" (1/1) ... [2023-09-01 06:02:05,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:02:05" (1/1) ... [2023-09-01 06:02:05,219 INFO L138 Inliner]: procedures = 364, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2023-09-01 06:02:05,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:02:05,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:02:05,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:02:05,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:02:05,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:02:05" (1/1) ... [2023-09-01 06:02:05,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:02:05" (1/1) ... [2023-09-01 06:02:05,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:02:05" (1/1) ... [2023-09-01 06:02:05,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:02:05" (1/1) ... [2023-09-01 06:02:05,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:02:05" (1/1) ... [2023-09-01 06:02:05,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:02:05" (1/1) ... [2023-09-01 06:02:05,236 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:02:05" (1/1) ... [2023-09-01 06:02:05,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:02:05" (1/1) ... [2023-09-01 06:02:05,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:02:05,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:02:05,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:02:05,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:02:05,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:02:05" (1/1) ... [2023-09-01 06:02:05,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:02:05,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:02:05,275 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 06:02:05,280 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 06:02:05,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:02:05,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:02:05,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:02:05,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:02:05,307 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:02:05,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:02:05,307 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2023-09-01 06:02:05,308 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2023-09-01 06:02:05,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:02:05,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:02:05,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:02:05,309 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 06:02:05,413 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:02:05,427 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:02:05,610 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:02:05,614 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:02:05,615 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 06:02:05,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:02:05 BoogieIcfgContainer [2023-09-01 06:02:05,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:02:05,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:02:05,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:02:05,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:02:05,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:02:04" (1/3) ... [2023-09-01 06:02:05,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4df9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:02:05, skipping insertion in model container [2023-09-01 06:02:05,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:02:05" (2/3) ... [2023-09-01 06:02:05,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4df9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:02:05, skipping insertion in model container [2023-09-01 06:02:05,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:02:05" (3/3) ... [2023-09-01 06:02:05,630 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2023-09-01 06:02:05,635 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:02:05,641 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:02:05,641 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 06:02:05,641 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:02:05,680 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 06:02:05,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 101 transitions, 210 flow [2023-09-01 06:02:05,738 INFO L130 PetriNetUnfolder]: 7/100 cut-off events. [2023-09-01 06:02:05,738 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 06:02:05,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 100 events. 7/100 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 145 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2023-09-01 06:02:05,743 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 101 transitions, 210 flow [2023-09-01 06:02:05,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 82 transitions, 167 flow [2023-09-01 06:02:05,748 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:02:05,758 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 82 transitions, 167 flow [2023-09-01 06:02:05,761 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 82 transitions, 167 flow [2023-09-01 06:02:05,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 82 transitions, 167 flow [2023-09-01 06:02:05,793 INFO L130 PetriNetUnfolder]: 5/82 cut-off events. [2023-09-01 06:02:05,796 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:02:05,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 82 events. 5/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2023-09-01 06:02:05,799 INFO L119 LiptonReduction]: Number of co-enabled transitions 1458 [2023-09-01 06:02:07,519 INFO L134 LiptonReduction]: Checked pairs total: 3440 [2023-09-01 06:02:07,519 INFO L136 LiptonReduction]: Total number of compositions: 73 [2023-09-01 06:02:07,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 06:02:07,533 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3924e782, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:02:07,533 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-09-01 06:02:07,535 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-09-01 06:02:07,535 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:02:07,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:02:07,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 06:02:07,536 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:02:07,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:02:07,539 INFO L85 PathProgramCache]: Analyzing trace with hash 347052882, now seen corresponding path program 1 times [2023-09-01 06:02:07,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:02:07,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881379125] [2023-09-01 06:02:07,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:02:07,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:02:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:02:07,750 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 06:02:07,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:02:07,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881379125] [2023-09-01 06:02:07,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881379125] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:02:07,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:02:07,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 06:02:07,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793203293] [2023-09-01 06:02:07,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:02:07,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:02:07,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:02:07,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:02:07,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:02:07,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 174 [2023-09-01 06:02:07,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 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 06:02:07,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:02:07,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 174 [2023-09-01 06:02:07,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:02:07,850 INFO L130 PetriNetUnfolder]: 110/230 cut-off events. [2023-09-01 06:02:07,851 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:02:07,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 230 events. 110/230 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 927 event pairs, 38 based on Foata normal form. 9/154 useless extension candidates. Maximal degree in co-relation 446. Up to 188 conditions per place. [2023-09-01 06:02:07,853 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 27 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-09-01 06:02:07,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 32 transitions, 127 flow [2023-09-01 06:02:07,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:02:07,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:02:07,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2023-09-01 06:02:07,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553639846743295 [2023-09-01 06:02:07,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2023-09-01 06:02:07,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2023-09-01 06:02:07,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:02:07,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2023-09-01 06:02:07,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 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 06:02:07,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 06:02:07,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 06:02:07,880 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 49 flow. Second operand 3 states and 289 transitions. [2023-09-01 06:02:07,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 32 transitions, 127 flow [2023-09-01 06:02:07,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:02:07,883 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 73 flow [2023-09-01 06:02:07,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2023-09-01 06:02:07,886 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-09-01 06:02:07,886 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 73 flow [2023-09-01 06:02:07,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 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 06:02:07,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:02:07,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:02:07,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:02:07,887 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread_function_mutexErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:02:07,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:02:07,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1489620701, now seen corresponding path program 1 times [2023-09-01 06:02:07,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:02:07,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612908268] [2023-09-01 06:02:07,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:02:07,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:02:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:02:07,945 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 06:02:07,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:02:07,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612908268] [2023-09-01 06:02:07,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612908268] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:02:07,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:02:07,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:02:07,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262693384] [2023-09-01 06:02:07,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:02:07,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:02:07,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:02:07,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:02:07,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:02:07,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 174 [2023-09-01 06:02:07,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 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 06:02:07,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:02:07,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 174 [2023-09-01 06:02:07,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:02:08,006 INFO L130 PetriNetUnfolder]: 123/262 cut-off events. [2023-09-01 06:02:08,006 INFO L131 PetriNetUnfolder]: For 7/25 co-relation queries the response was YES. [2023-09-01 06:02:08,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 262 events. 123/262 cut-off events. For 7/25 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1177 event pairs, 56 based on Foata normal form. 3/166 useless extension candidates. Maximal degree in co-relation 574. Up to 137 conditions per place. [2023-09-01 06:02:08,008 INFO L137 encePairwiseOnDemand]: 169/174 looper letters, 29 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-09-01 06:02:08,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 37 transitions, 165 flow [2023-09-01 06:02:08,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:02:08,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:02:08,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2023-09-01 06:02:08,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2023-09-01 06:02:08,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2023-09-01 06:02:08,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2023-09-01 06:02:08,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:02:08,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2023-09-01 06:02:08,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 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 06:02:08,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 06:02:08,012 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 06:02:08,012 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 73 flow. Second operand 3 states and 294 transitions. [2023-09-01 06:02:08,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 37 transitions, 165 flow [2023-09-01 06:02:08,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 37 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:02:08,014 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 86 flow [2023-09-01 06:02:08,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2023-09-01 06:02:08,014 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-09-01 06:02:08,015 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 86 flow [2023-09-01 06:02:08,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 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 06:02:08,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:02:08,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:02:08,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:02:08,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:02:08,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:02:08,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1375754503, now seen corresponding path program 1 times [2023-09-01 06:02:08,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:02:08,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173071513] [2023-09-01 06:02:08,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:02:08,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:02:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:02:08,051 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 06:02:08,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:02:08,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173071513] [2023-09-01 06:02:08,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173071513] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:02:08,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:02:08,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:02:08,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858287858] [2023-09-01 06:02:08,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:02:08,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:02:08,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:02:08,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:02:08,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:02:08,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-09-01 06:02:08,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 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 06:02:08,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:02:08,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-09-01 06:02:08,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:02:08,147 INFO L130 PetriNetUnfolder]: 156/417 cut-off events. [2023-09-01 06:02:08,148 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2023-09-01 06:02:08,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 417 events. 156/417 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2140 event pairs, 83 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 913. Up to 220 conditions per place. [2023-09-01 06:02:08,153 INFO L137 encePairwiseOnDemand]: 169/174 looper letters, 32 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-09-01 06:02:08,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 204 flow [2023-09-01 06:02:08,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:02:08,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:02:08,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2023-09-01 06:02:08,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574712643678161 [2023-09-01 06:02:08,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 291 transitions. [2023-09-01 06:02:08,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 291 transitions. [2023-09-01 06:02:08,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:02:08,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 291 transitions. [2023-09-01 06:02:08,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 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 06:02:08,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 06:02:08,157 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 06:02:08,157 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 86 flow. Second operand 3 states and 291 transitions. [2023-09-01 06:02:08,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 204 flow [2023-09-01 06:02:08,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:02:08,160 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 100 flow [2023-09-01 06:02:08,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2023-09-01 06:02:08,161 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2023-09-01 06:02:08,161 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 100 flow [2023-09-01 06:02:08,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 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 06:02:08,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:02:08,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:02:08,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:02:08,162 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:02:08,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:02:08,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1301367715, now seen corresponding path program 1 times [2023-09-01 06:02:08,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:02:08,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479500276] [2023-09-01 06:02:08,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:02:08,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:02:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:02:08,241 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 06:02:08,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:02:08,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479500276] [2023-09-01 06:02:08,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479500276] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:02:08,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:02:08,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 06:02:08,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912996316] [2023-09-01 06:02:08,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:02:08,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:02:08,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:02:08,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:02:08,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:02:08,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-09-01 06:02:08,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 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 06:02:08,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:02:08,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-09-01 06:02:08,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:02:08,299 INFO L130 PetriNetUnfolder]: 59/220 cut-off events. [2023-09-01 06:02:08,299 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2023-09-01 06:02:08,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 220 events. 59/220 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 988 event pairs, 21 based on Foata normal form. 22/208 useless extension candidates. Maximal degree in co-relation 544. Up to 90 conditions per place. [2023-09-01 06:02:08,302 INFO L137 encePairwiseOnDemand]: 166/174 looper letters, 15 selfloop transitions, 10 changer transitions 0/31 dead transitions. [2023-09-01 06:02:08,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 167 flow [2023-09-01 06:02:08,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:02:08,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:02:08,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2023-09-01 06:02:08,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2023-09-01 06:02:08,306 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2023-09-01 06:02:08,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2023-09-01 06:02:08,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:02:08,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2023-09-01 06:02:08,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 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 06:02:08,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 06:02:08,312 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 06:02:08,312 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 100 flow. Second operand 3 states and 282 transitions. [2023-09-01 06:02:08,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 167 flow [2023-09-01 06:02:08,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:02:08,314 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 118 flow [2023-09-01 06:02:08,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-09-01 06:02:08,315 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2023-09-01 06:02:08,315 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 118 flow [2023-09-01 06:02:08,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 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 06:02:08,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:02:08,316 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:02:08,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:02:08,316 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:02:08,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:02:08,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1301366572, now seen corresponding path program 1 times [2023-09-01 06:02:08,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:02:08,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776214161] [2023-09-01 06:02:08,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:02:08,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:02:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:02:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:02:08,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:02:08,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776214161] [2023-09-01 06:02:08,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776214161] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:02:08,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234894376] [2023-09-01 06:02:08,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:02:08,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:02:08,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:02:08,402 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 06:02:08,431 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 06:02:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:02:08,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 06:02:08,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:02:08,544 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 06:02:08,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:02:08,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234894376] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:02:08,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 06:02:08,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-09-01 06:02:08,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343819796] [2023-09-01 06:02:08,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:02:08,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 06:02:08,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:02:08,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 06:02:08,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-09-01 06:02:08,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 174 [2023-09-01 06:02:08,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 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 06:02:08,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:02:08,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 174 [2023-09-01 06:02:08,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:02:08,669 INFO L130 PetriNetUnfolder]: 63/204 cut-off events. [2023-09-01 06:02:08,670 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-09-01 06:02:08,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 204 events. 63/204 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 758 event pairs, 16 based on Foata normal form. 10/190 useless extension candidates. Maximal degree in co-relation 594. Up to 134 conditions per place. [2023-09-01 06:02:08,672 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 34 selfloop transitions, 6 changer transitions 0/42 dead transitions. [2023-09-01 06:02:08,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 42 transitions, 262 flow [2023-09-01 06:02:08,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 06:02:08,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 06:02:08,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 527 transitions. [2023-09-01 06:02:08,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047892720306514 [2023-09-01 06:02:08,674 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 527 transitions. [2023-09-01 06:02:08,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 527 transitions. [2023-09-01 06:02:08,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:02:08,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 527 transitions. [2023-09-01 06:02:08,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 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 06:02:08,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 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 06:02:08,678 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 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 06:02:08,678 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 118 flow. Second operand 6 states and 527 transitions. [2023-09-01 06:02:08,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 42 transitions, 262 flow [2023-09-01 06:02:08,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 42 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:02:08,681 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 127 flow [2023-09-01 06:02:08,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=127, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-09-01 06:02:08,684 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2023-09-01 06:02:08,684 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 127 flow [2023-09-01 06:02:08,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 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 06:02:08,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:02:08,685 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:02:08,708 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 06:02:08,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:02:08,892 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:02:08,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:02:08,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1301366570, now seen corresponding path program 1 times [2023-09-01 06:02:08,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:02:08,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489271308] [2023-09-01 06:02:08,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:02:08,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:02:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:02:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:02:08,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:02:08,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489271308] [2023-09-01 06:02:08,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489271308] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:02:08,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728187739] [2023-09-01 06:02:08,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:02:08,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:02:08,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:02:08,935 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 06:02:08,937 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 06:02:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:02:08,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 06:02:08,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:02:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:02:09,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:02:09,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:02:09,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728187739] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:02:09,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:02:09,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-09-01 06:02:09,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084289115] [2023-09-01 06:02:09,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:02:09,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 06:02:09,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:02:09,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 06:02:09,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-09-01 06:02:09,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 174 [2023-09-01 06:02:09,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 127 flow. Second operand has 10 states, 10 states have (on average 81.4) internal successors, (814), 10 states have internal predecessors, (814), 0 states have call successors, (0), 0 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 06:02:09,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:02:09,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 174 [2023-09-01 06:02:09,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:02:09,220 INFO L130 PetriNetUnfolder]: 167/484 cut-off events. [2023-09-01 06:02:09,220 INFO L131 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2023-09-01 06:02:09,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 484 events. 167/484 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2400 event pairs, 26 based on Foata normal form. 44/480 useless extension candidates. Maximal degree in co-relation 1396. Up to 147 conditions per place. [2023-09-01 06:02:09,223 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 85 selfloop transitions, 22 changer transitions 0/108 dead transitions. [2023-09-01 06:02:09,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 108 transitions, 653 flow [2023-09-01 06:02:09,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 06:02:09,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 06:02:09,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 982 transitions. [2023-09-01 06:02:09,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130616509926855 [2023-09-01 06:02:09,226 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 982 transitions. [2023-09-01 06:02:09,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 982 transitions. [2023-09-01 06:02:09,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:02:09,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 982 transitions. [2023-09-01 06:02:09,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 89.27272727272727) internal successors, (982), 11 states have internal predecessors, (982), 0 states have call successors, (0), 0 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 06:02:09,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 174.0) internal successors, (2088), 12 states have internal predecessors, (2088), 0 states have call successors, (0), 0 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 06:02:09,231 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 174.0) internal successors, (2088), 12 states have internal predecessors, (2088), 0 states have call successors, (0), 0 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 06:02:09,232 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 127 flow. Second operand 11 states and 982 transitions. [2023-09-01 06:02:09,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 108 transitions, 653 flow [2023-09-01 06:02:09,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 108 transitions, 649 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 06:02:09,235 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 311 flow [2023-09-01 06:02:09,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=311, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-09-01 06:02:09,236 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 26 predicate places. [2023-09-01 06:02:09,237 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 311 flow [2023-09-01 06:02:09,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 81.4) internal successors, (814), 10 states have internal predecessors, (814), 0 states have call successors, (0), 0 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 06:02:09,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:02:09,237 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 06:02:09,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 06:02:09,442 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,SelfDestructingSolverStorable5 [2023-09-01 06:02:09,442 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread_function_mutexErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:02:09,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:02:09,443 INFO L85 PathProgramCache]: Analyzing trace with hash -777781849, now seen corresponding path program 1 times [2023-09-01 06:02:09,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:02:09,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249657723] [2023-09-01 06:02:09,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:02:09,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:02:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:02:09,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 06:02:09,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:02:09,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249657723] [2023-09-01 06:02:09,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249657723] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:02:09,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:02:09,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:02:09,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656456138] [2023-09-01 06:02:09,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:02:09,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:02:09,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:02:09,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:02:09,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:02:09,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-09-01 06:02:09,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 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 06:02:09,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:02:09,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-09-01 06:02:09,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:02:09,525 INFO L130 PetriNetUnfolder]: 131/389 cut-off events. [2023-09-01 06:02:09,526 INFO L131 PetriNetUnfolder]: For 652/652 co-relation queries the response was YES. [2023-09-01 06:02:09,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 389 events. 131/389 cut-off events. For 652/652 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1907 event pairs, 32 based on Foata normal form. 0/348 useless extension candidates. Maximal degree in co-relation 1384. Up to 210 conditions per place. [2023-09-01 06:02:09,527 INFO L137 encePairwiseOnDemand]: 170/174 looper letters, 35 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2023-09-01 06:02:09,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 418 flow [2023-09-01 06:02:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:02:09,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:02:09,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2023-09-01 06:02:09,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2023-09-01 06:02:09,529 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2023-09-01 06:02:09,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2023-09-01 06:02:09,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:02:09,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2023-09-01 06:02:09,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 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 06:02:09,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 06:02:09,531 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 06:02:09,531 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 311 flow. Second operand 3 states and 282 transitions. [2023-09-01 06:02:09,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 418 flow [2023-09-01 06:02:09,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 389 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-09-01 06:02:09,534 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 294 flow [2023-09-01 06:02:09,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-09-01 06:02:09,534 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 26 predicate places. [2023-09-01 06:02:09,534 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 294 flow [2023-09-01 06:02:09,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 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 06:02:09,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:02:09,535 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 06:02:09,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:02:09,535 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:02:09,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:02:09,535 INFO L85 PathProgramCache]: Analyzing trace with hash -777781864, now seen corresponding path program 1 times [2023-09-01 06:02:09,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:02:09,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741024228] [2023-09-01 06:02:09,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:02:09,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:02:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:02:09,564 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 06:02:09,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:02:09,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741024228] [2023-09-01 06:02:09,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741024228] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:02:09,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47951308] [2023-09-01 06:02:09,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:02:09,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:02:09,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:02:09,566 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:02:09,568 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 06:02:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:02:09,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 06:02:09,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:02:09,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:02:09,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:02:09,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47951308] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:02:09,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 06:02:09,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 06:02:09,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632650770] [2023-09-01 06:02:09,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:02:09,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 06:02:09,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:02:09,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 06:02:09,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 06:02:09,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 174 [2023-09-01 06:02:09,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 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 06:02:09,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:02:09,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 174 [2023-09-01 06:02:09,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:02:09,715 INFO L130 PetriNetUnfolder]: 124/379 cut-off events. [2023-09-01 06:02:09,715 INFO L131 PetriNetUnfolder]: For 733/733 co-relation queries the response was YES. [2023-09-01 06:02:09,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1447 conditions, 379 events. 124/379 cut-off events. For 733/733 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1785 event pairs, 28 based on Foata normal form. 10/365 useless extension candidates. Maximal degree in co-relation 1423. Up to 192 conditions per place. [2023-09-01 06:02:09,717 INFO L137 encePairwiseOnDemand]: 171/174 looper letters, 46 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-09-01 06:02:09,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 465 flow [2023-09-01 06:02:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 06:02:09,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 06:02:09,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 381 transitions. [2023-09-01 06:02:09,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5474137931034483 [2023-09-01 06:02:09,718 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 381 transitions. [2023-09-01 06:02:09,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 381 transitions. [2023-09-01 06:02:09,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:02:09,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 381 transitions. [2023-09-01 06:02:09,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 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 06:02:09,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 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 06:02:09,721 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 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 06:02:09,721 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 294 flow. Second operand 4 states and 381 transitions. [2023-09-01 06:02:09,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 465 flow [2023-09-01 06:02:09,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 60 transitions, 461 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:02:09,724 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 289 flow [2023-09-01 06:02:09,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-09-01 06:02:09,725 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2023-09-01 06:02:09,726 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 289 flow [2023-09-01 06:02:09,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 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 06:02:09,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:02:09,726 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 06:02:09,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 06:02:09,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:02:09,933 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:02:09,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:02:09,933 INFO L85 PathProgramCache]: Analyzing trace with hash 210246718, now seen corresponding path program 1 times [2023-09-01 06:02:09,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:02:09,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446391364] [2023-09-01 06:02:09,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:02:09,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:02:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:02:09,959 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:02:09,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:02:09,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446391364] [2023-09-01 06:02:09,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446391364] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:02:09,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:02:09,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:02:09,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871376234] [2023-09-01 06:02:09,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:02:09,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:02:09,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:02:09,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:02:09,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:02:09,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-09-01 06:02:09,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 289 flow. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 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 06:02:09,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:02:09,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-09-01 06:02:09,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:02:10,011 INFO L130 PetriNetUnfolder]: 113/352 cut-off events. [2023-09-01 06:02:10,011 INFO L131 PetriNetUnfolder]: For 798/798 co-relation queries the response was YES. [2023-09-01 06:02:10,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1296 conditions, 352 events. 113/352 cut-off events. For 798/798 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1611 event pairs, 24 based on Foata normal form. 0/338 useless extension candidates. Maximal degree in co-relation 1271. Up to 255 conditions per place. [2023-09-01 06:02:10,013 INFO L137 encePairwiseOnDemand]: 172/174 looper letters, 42 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-09-01 06:02:10,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 55 transitions, 465 flow [2023-09-01 06:02:10,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:02:10,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:02:10,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-09-01 06:02:10,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2023-09-01 06:02:10,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-09-01 06:02:10,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-09-01 06:02:10,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:02:10,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-09-01 06:02:10,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 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 06:02:10,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 06:02:10,016 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 06:02:10,016 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 289 flow. Second operand 3 states and 280 transitions. [2023-09-01 06:02:10,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 55 transitions, 465 flow [2023-09-01 06:02:10,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 459 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 06:02:10,019 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 283 flow [2023-09-01 06:02:10,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-09-01 06:02:10,020 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 26 predicate places. [2023-09-01 06:02:10,020 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 283 flow [2023-09-01 06:02:10,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 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 06:02:10,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:02:10,020 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 06:02:10,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:02:10,021 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:02:10,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:02:10,021 INFO L85 PathProgramCache]: Analyzing trace with hash 210246719, now seen corresponding path program 1 times [2023-09-01 06:02:10,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:02:10,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408054325] [2023-09-01 06:02:10,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:02:10,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:02:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:02:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 06:02:10,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:02:10,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408054325] [2023-09-01 06:02:10,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408054325] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:02:10,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:02:10,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:02:10,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139496759] [2023-09-01 06:02:10,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:02:10,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:02:10,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:02:10,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:02:10,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:02:10,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 174 [2023-09-01 06:02:10,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 283 flow. Second operand has 3 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 06:02:10,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:02:10,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 174 [2023-09-01 06:02:10,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:02:10,100 INFO L130 PetriNetUnfolder]: 99/310 cut-off events. [2023-09-01 06:02:10,100 INFO L131 PetriNetUnfolder]: For 698/698 co-relation queries the response was YES. [2023-09-01 06:02:10,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1113 conditions, 310 events. 99/310 cut-off events. For 698/698 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1322 event pairs, 38 based on Foata normal form. 0/310 useless extension candidates. Maximal degree in co-relation 1088. Up to 156 conditions per place. [2023-09-01 06:02:10,102 INFO L137 encePairwiseOnDemand]: 170/174 looper letters, 39 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2023-09-01 06:02:10,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 459 flow [2023-09-01 06:02:10,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:02:10,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:02:10,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2023-09-01 06:02:10,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306513409961686 [2023-09-01 06:02:10,103 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2023-09-01 06:02:10,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2023-09-01 06:02:10,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:02:10,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2023-09-01 06:02:10,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 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 06:02:10,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 06:02:10,105 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 06:02:10,105 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 283 flow. Second operand 3 states and 277 transitions. [2023-09-01 06:02:10,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 459 flow [2023-09-01 06:02:10,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:02:10,108 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 294 flow [2023-09-01 06:02:10,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-09-01 06:02:10,108 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2023-09-01 06:02:10,109 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 294 flow [2023-09-01 06:02:10,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 06:02:10,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:02:10,109 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1] [2023-09-01 06:02:10,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:02:10,109 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:02:10,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:02:10,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1690907170, now seen corresponding path program 2 times [2023-09-01 06:02:10,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:02:10,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111607583] [2023-09-01 06:02:10,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:02:10,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:02:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:02:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:02:10,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:02:10,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111607583] [2023-09-01 06:02:10,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111607583] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:02:10,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003696821] [2023-09-01 06:02:10,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 06:02:10,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:02:10,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:02:10,190 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 06:02:10,193 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 06:02:10,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 06:02:10,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:02:10,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 06:02:10,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:02:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:02:10,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:02:10,386 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:02:10,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003696821] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:02:10,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:02:10,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-09-01 06:02:10,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411962792] [2023-09-01 06:02:10,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:02:10,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 06:02:10,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:02:10,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 06:02:10,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-09-01 06:02:10,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 174 [2023-09-01 06:02:10,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 294 flow. Second operand has 18 states, 18 states have (on average 81.22222222222223) internal successors, (1462), 18 states have internal predecessors, (1462), 0 states have call successors, (0), 0 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 06:02:10,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:02:10,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 174 [2023-09-01 06:02:10,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:02:11,049 INFO L130 PetriNetUnfolder]: 412/1123 cut-off events. [2023-09-01 06:02:11,049 INFO L131 PetriNetUnfolder]: For 4756/4756 co-relation queries the response was YES. [2023-09-01 06:02:11,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4265 conditions, 1123 events. 412/1123 cut-off events. For 4756/4756 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5765 event pairs, 65 based on Foata normal form. 112/1235 useless extension candidates. Maximal degree in co-relation 4240. Up to 217 conditions per place. [2023-09-01 06:02:11,054 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 265 selfloop transitions, 83 changer transitions 0/349 dead transitions. [2023-09-01 06:02:11,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 349 transitions, 2915 flow [2023-09-01 06:02:11,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-09-01 06:02:11,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-09-01 06:02:11,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3450 transitions. [2023-09-01 06:02:11,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083996463306808 [2023-09-01 06:02:11,061 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3450 transitions. [2023-09-01 06:02:11,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3450 transitions. [2023-09-01 06:02:11,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:02:11,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3450 transitions. [2023-09-01 06:02:11,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 88.46153846153847) internal successors, (3450), 39 states have internal predecessors, (3450), 0 states have call successors, (0), 0 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 06:02:11,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 174.0) internal successors, (6960), 40 states have internal predecessors, (6960), 0 states have call successors, (0), 0 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 06:02:11,074 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 174.0) internal successors, (6960), 40 states have internal predecessors, (6960), 0 states have call successors, (0), 0 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 06:02:11,074 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 294 flow. Second operand 39 states and 3450 transitions. [2023-09-01 06:02:11,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 349 transitions, 2915 flow [2023-09-01 06:02:11,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 349 transitions, 2835 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:02:11,083 INFO L231 Difference]: Finished difference. Result has 119 places, 110 transitions, 1181 flow [2023-09-01 06:02:11,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1181, PETRI_PLACES=119, PETRI_TRANSITIONS=110} [2023-09-01 06:02:11,084 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 94 predicate places. [2023-09-01 06:02:11,084 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 110 transitions, 1181 flow [2023-09-01 06:02:11,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.22222222222223) internal successors, (1462), 18 states have internal predecessors, (1462), 0 states have call successors, (0), 0 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 06:02:11,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:02:11,085 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1] [2023-09-01 06:02:11,092 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 06:02:11,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:02:11,290 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:02:11,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:02:11,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1217028078, now seen corresponding path program 3 times [2023-09-01 06:02:11,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:02:11,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518917597] [2023-09-01 06:02:11,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:02:11,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:02:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:02:11,585 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:02:11,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:02:11,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518917597] [2023-09-01 06:02:11,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518917597] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:02:11,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165848628] [2023-09-01 06:02:11,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 06:02:11,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:02:11,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:02:11,587 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 06:02:11,589 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 06:02:11,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-09-01 06:02:11,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:02:11,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 24 conjunts are in the unsatisfiable core [2023-09-01 06:02:11,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:02:11,754 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:02:11,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:02:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:02:11,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165848628] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:02:11,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:02:11,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2023-09-01 06:02:11,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448631713] [2023-09-01 06:02:11,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:02:11,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-09-01 06:02:11,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:02:11,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-09-01 06:02:11,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-09-01 06:02:12,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 174 [2023-09-01 06:02:12,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 110 transitions, 1181 flow. Second operand has 34 states, 34 states have (on average 81.11764705882354) internal successors, (2758), 34 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 06:02:12,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:02:12,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 174 [2023-09-01 06:02:12,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:02:15,334 INFO L130 PetriNetUnfolder]: 1562/4261 cut-off events. [2023-09-01 06:02:15,334 INFO L131 PetriNetUnfolder]: For 147750/147750 co-relation queries the response was YES. [2023-09-01 06:02:15,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18394 conditions, 4261 events. 1562/4261 cut-off events. For 147750/147750 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 27371 event pairs, 219 based on Foata normal form. 480/4741 useless extension candidates. Maximal degree in co-relation 18337. Up to 897 conditions per place. [2023-09-01 06:02:15,371 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 951 selfloop transitions, 348 changer transitions 0/1300 dead transitions. [2023-09-01 06:02:15,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 1300 transitions, 13132 flow [2023-09-01 06:02:15,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-09-01 06:02:15,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2023-09-01 06:02:15,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 12666 transitions. [2023-09-01 06:02:15,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5090426814564746 [2023-09-01 06:02:15,389 INFO L72 ComplementDD]: Start complementDD. Operand 143 states and 12666 transitions. [2023-09-01 06:02:15,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 143 states and 12666 transitions. [2023-09-01 06:02:15,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:02:15,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 143 states and 12666 transitions. [2023-09-01 06:02:15,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 144 states, 143 states have (on average 88.57342657342657) internal successors, (12666), 143 states have internal predecessors, (12666), 0 states have call successors, (0), 0 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 06:02:15,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 144 states, 144 states have (on average 174.0) internal successors, (25056), 144 states have internal predecessors, (25056), 0 states have call successors, (0), 0 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 06:02:15,460 INFO L81 ComplementDD]: Finished complementDD. Result has 144 states, 144 states have (on average 174.0) internal successors, (25056), 144 states have internal predecessors, (25056), 0 states have call successors, (0), 0 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 06:02:15,460 INFO L175 Difference]: Start difference. First operand has 119 places, 110 transitions, 1181 flow. Second operand 143 states and 12666 transitions. [2023-09-01 06:02:15,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 1300 transitions, 13132 flow [2023-09-01 06:02:15,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 1300 transitions, 12919 flow, removed 99 selfloop flow, removed 5 redundant places. [2023-09-01 06:02:15,673 INFO L231 Difference]: Finished difference. Result has 365 places, 389 transitions, 5608 flow [2023-09-01 06:02:15,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=143, PETRI_FLOW=5608, PETRI_PLACES=365, PETRI_TRANSITIONS=389} [2023-09-01 06:02:15,674 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 340 predicate places. [2023-09-01 06:02:15,674 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 389 transitions, 5608 flow [2023-09-01 06:02:15,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 81.11764705882354) internal successors, (2758), 34 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 06:02:15,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:02:15,675 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1] [2023-09-01 06:02:15,683 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 06:02:15,880 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,SelfDestructingSolverStorable11 [2023-09-01 06:02:15,881 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:02:15,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:02:15,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1662985230, now seen corresponding path program 4 times [2023-09-01 06:02:15,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:02:15,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393395471] [2023-09-01 06:02:15,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:02:15,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:02:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:02:16,810 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:02:16,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:02:16,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393395471] [2023-09-01 06:02:16,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393395471] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:02:16,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451323358] [2023-09-01 06:02:16,810 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 06:02:16,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:02:16,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:02:16,811 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 06:02:16,813 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 06:02:16,917 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 06:02:16,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:02:16,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 48 conjunts are in the unsatisfiable core [2023-09-01 06:02:16,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:02:17,021 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:02:17,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:02:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:02:17,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451323358] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:02:17,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:02:17,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 64 [2023-09-01 06:02:17,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435425970] [2023-09-01 06:02:17,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:02:17,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-09-01 06:02:17,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:02:17,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-09-01 06:02:17,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290 [2023-09-01 06:02:17,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 174 [2023-09-01 06:02:17,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 389 transitions, 5608 flow. Second operand has 66 states, 66 states have (on average 81.06060606060606) internal successors, (5350), 66 states have internal predecessors, (5350), 0 states have call successors, (0), 0 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 06:02:17,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:02:17,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 174 [2023-09-01 06:02:17,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:02:49,509 INFO L130 PetriNetUnfolder]: 6316/17279 cut-off events. [2023-09-01 06:02:49,510 INFO L131 PetriNetUnfolder]: For 9071210/9071210 co-relation queries the response was YES. [2023-09-01 06:02:49,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88688 conditions, 17279 events. 6316/17279 cut-off events. For 9071210/9071210 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 134666 event pairs, 835 based on Foata normal form. 2112/19391 useless extension candidates. Maximal degree in co-relation 88521. Up to 3793 conditions per place. [2023-09-01 06:02:49,793 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 3573 selfloop transitions, 1493 changer transitions 0/5067 dead transitions. [2023-09-01 06:02:49,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 907 places, 5067 transitions, 64777 flow [2023-09-01 06:02:49,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 543 states. [2023-09-01 06:02:49,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2023-09-01 06:02:49,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 48090 transitions. [2023-09-01 06:02:49,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089858385724265 [2023-09-01 06:02:49,846 INFO L72 ComplementDD]: Start complementDD. Operand 543 states and 48090 transitions. [2023-09-01 06:02:49,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 543 states and 48090 transitions. [2023-09-01 06:02:49,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:02:49,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 543 states and 48090 transitions. [2023-09-01 06:02:49,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 544 states, 543 states have (on average 88.56353591160222) internal successors, (48090), 543 states have internal predecessors, (48090), 0 states have call successors, (0), 0 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 06:02:50,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 544 states, 544 states have (on average 174.0) internal successors, (94656), 544 states have internal predecessors, (94656), 0 states have call successors, (0), 0 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 06:02:50,049 INFO L81 ComplementDD]: Finished complementDD. Result has 544 states, 544 states have (on average 174.0) internal successors, (94656), 544 states have internal predecessors, (94656), 0 states have call successors, (0), 0 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 06:02:50,050 INFO L175 Difference]: Start difference. First operand has 365 places, 389 transitions, 5608 flow. Second operand 543 states and 48090 transitions. [2023-09-01 06:02:50,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 907 places, 5067 transitions, 64777 flow [2023-09-01 06:02:59,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 885 places, 5067 transitions, 63982 flow, removed 361 selfloop flow, removed 22 redundant places. [2023-09-01 06:02:59,787 INFO L231 Difference]: Finished difference. Result has 1298 places, 1566 transitions, 28535 flow [2023-09-01 06:02:59,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=5395, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=543, PETRI_FLOW=28535, PETRI_PLACES=1298, PETRI_TRANSITIONS=1566} [2023-09-01 06:02:59,788 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 1273 predicate places. [2023-09-01 06:02:59,788 INFO L495 AbstractCegarLoop]: Abstraction has has 1298 places, 1566 transitions, 28535 flow [2023-09-01 06:02:59,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 81.06060606060606) internal successors, (5350), 66 states have internal predecessors, (5350), 0 states have call successors, (0), 0 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 06:02:59,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:02:59,790 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 1, 1, 1, 1] [2023-09-01 06:02:59,802 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 06:02:59,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:02:59,990 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 06:02:59,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:02:59,991 INFO L85 PathProgramCache]: Analyzing trace with hash -553702322, now seen corresponding path program 5 times [2023-09-01 06:02:59,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:02:59,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493263751] [2023-09-01 06:02:59,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:02:59,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:03:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:03:02,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:03:02,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:03:02,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493263751] [2023-09-01 06:03:02,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493263751] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:03:02,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767675910] [2023-09-01 06:03:02,538 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 06:03:02,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:03:02,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:03:02,540 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 06:03:02,541 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 06:03:02,851 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2023-09-01 06:03:02,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:03:02,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 32 conjunts are in the unsatisfiable core [2023-09-01 06:03:02,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:03:03,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 1921 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 06:03:03,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:03:03,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767675910] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:03:03,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 06:03:03,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [63] total 96 [2023-09-01 06:03:03,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137578685] [2023-09-01 06:03:03,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:03:03,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-09-01 06:03:03,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:03:03,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-09-01 06:03:03,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1615, Invalid=7505, Unknown=0, NotChecked=0, Total=9120 [2023-09-01 06:03:03,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-09-01 06:03:03,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1298 places, 1566 transitions, 28535 flow. Second operand has 33 states, 33 states have (on average 89.9090909090909) internal successors, (2967), 33 states have internal predecessors, (2967), 0 states have call successors, (0), 0 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 06:03:03,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:03:03,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-09-01 06:03:03,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:04:34,046 INFO L130 PetriNetUnfolder]: 42075/101398 cut-off events. [2023-09-01 06:04:34,046 INFO L131 PetriNetUnfolder]: For 65965346/65965346 co-relation queries the response was YES. [2023-09-01 06:04:55,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798932 conditions, 101398 events. 42075/101398 cut-off events. For 65965346/65965346 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 1052040 event pairs, 6401 based on Foata normal form. 156/101488 useless extension candidates. Maximal degree in co-relation 798351. Up to 22438 conditions per place. [2023-09-01 06:04:55,657 INFO L137 encePairwiseOnDemand]: 170/174 looper letters, 7705 selfloop transitions, 40 changer transitions 1/8498 dead transitions. [2023-09-01 06:04:55,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1320 places, 8498 transitions, 170422 flow [2023-09-01 06:04:55,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-09-01 06:04:55,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-09-01 06:04:55,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2190 transitions. [2023-09-01 06:04:55,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5472263868065967 [2023-09-01 06:04:55,659 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2190 transitions. [2023-09-01 06:04:55,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2190 transitions. [2023-09-01 06:04:55,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:04:55,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2190 transitions. [2023-09-01 06:04:55,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 95.21739130434783) internal successors, (2190), 23 states have internal predecessors, (2190), 0 states have call successors, (0), 0 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 06:04:55,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 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 06:04:55,666 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 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 06:04:55,666 INFO L175 Difference]: Start difference. First operand has 1298 places, 1566 transitions, 28535 flow. Second operand 23 states and 2190 transitions. [2023-09-01 06:04:55,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1320 places, 8498 transitions, 170422 flow Killed by 15