./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 AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 09:27:41,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 09:27:41,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 09:27:41,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 09:27:41,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 09:27:41,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 09:27:41,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 09:27:41,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 09:27:41,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 09:27:41,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 09:27:41,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 09:27:41,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 09:27:41,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 09:27:41,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 09:27:41,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 09:27:41,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 09:27:41,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 09:27:41,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 09:27:41,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 09:27:41,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 09:27:41,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 09:27:41,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 09:27:41,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 09:27:41,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 09:27:41,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 09:27:41,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 09:27:41,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 09:27:41,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 09:27:41,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 09:27:41,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 09:27:41,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 09:27:41,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 09:27:41,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 09:27:41,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 09:27:41,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 09:27:41,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 09:27:41,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 09:27:41,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 09:27:41,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 09:27:41,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 09:27:41,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 09:27:41,119 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 09:27:41,151 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 09:27:41,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 09:27:41,153 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 09:27:41,153 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 09:27:41,154 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 09:27:41,154 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 09:27:41,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 09:27:41,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 09:27:41,155 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 09:27:41,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 09:27:41,156 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 09:27:41,156 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 09:27:41,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 09:27:41,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 09:27:41,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 09:27:41,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 09:27:41,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 09:27:41,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 09:27:41,157 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 09:27:41,157 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 09:27:41,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 09:27:41,158 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 09:27:41,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 09:27:41,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 09:27:41,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 09:27:41,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 09:27:41,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:27:41,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 09:27:41,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 09:27:41,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 09:27:41,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 09:27:41,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 09:27:41,160 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 09:27:41,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 09:27:41,160 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 09:27:41,160 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 09:27:41,161 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 09:27:41,161 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 09:27:41,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 09:27:41,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 09:27:41,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 09:27:41,489 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 09:27:41,489 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 09:27:41,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-08-30 09:27:42,650 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 09:27:42,890 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 09:27:42,891 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-08-30 09:27:42,905 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a7fb688b/5cea994036224222ad3c82888eb2c617/FLAGc214dc55a [2023-08-30 09:27:42,918 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a7fb688b/5cea994036224222ad3c82888eb2c617 [2023-08-30 09:27:42,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 09:27:42,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 09:27:42,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 09:27:42,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 09:27:42,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 09:27:42,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:27:42" (1/1) ... [2023-08-30 09:27:42,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f9ba6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:27:42, skipping insertion in model container [2023-08-30 09:27:42,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:27:42" (1/1) ... [2023-08-30 09:27:42,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 09:27:42,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 09:27:43,118 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] [2023-08-30 09:27:43,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:27:43,418 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 09:27:43,430 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] [2023-08-30 09:27:43,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:27:43,570 INFO L208 MainTranslator]: Completed translation [2023-08-30 09:27:43,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:27:43 WrapperNode [2023-08-30 09:27:43,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 09:27:43,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 09:27:43,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 09:27:43,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 09:27:43,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:27:43" (1/1) ... [2023-08-30 09:27:43,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:27:43" (1/1) ... [2023-08-30 09:27:43,633 INFO L138 Inliner]: procedures = 364, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2023-08-30 09:27:43,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 09:27:43,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 09:27:43,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 09:27:43,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 09:27:43,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:27:43" (1/1) ... [2023-08-30 09:27:43,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:27:43" (1/1) ... [2023-08-30 09:27:43,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:27:43" (1/1) ... [2023-08-30 09:27:43,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:27:43" (1/1) ... [2023-08-30 09:27:43,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:27:43" (1/1) ... [2023-08-30 09:27:43,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:27:43" (1/1) ... [2023-08-30 09:27:43,677 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:27:43" (1/1) ... [2023-08-30 09:27:43,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:27:43" (1/1) ... [2023-08-30 09:27:43,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 09:27:43,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 09:27:43,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 09:27:43,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 09:27:43,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:27:43" (1/1) ... [2023-08-30 09:27:43,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:27:43,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:27:43,717 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 09:27:43,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 09:27:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 09:27:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 09:27:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 09:27:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 09:27:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 09:27:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 09:27:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2023-08-30 09:27:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2023-08-30 09:27:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 09:27:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 09:27:43,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 09:27:43,757 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 09:27:43,880 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 09:27:43,885 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 09:27:44,100 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 09:27:44,106 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 09:27:44,106 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 09:27:44,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:27:44 BoogieIcfgContainer [2023-08-30 09:27:44,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 09:27:44,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 09:27:44,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 09:27:44,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 09:27:44,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 09:27:42" (1/3) ... [2023-08-30 09:27:44,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7ce561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:27:44, skipping insertion in model container [2023-08-30 09:27:44,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:27:43" (2/3) ... [2023-08-30 09:27:44,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7ce561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:27:44, skipping insertion in model container [2023-08-30 09:27:44,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:27:44" (3/3) ... [2023-08-30 09:27:44,117 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2023-08-30 09:27:44,123 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 09:27:44,131 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 09:27:44,132 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 09:27:44,132 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 09:27:44,194 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 09:27:44,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 101 transitions, 210 flow [2023-08-30 09:27:44,292 INFO L130 PetriNetUnfolder]: 7/100 cut-off events. [2023-08-30 09:27:44,293 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 09:27:44,297 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. [2023-08-30 09:27:44,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 101 transitions, 210 flow [2023-08-30 09:27:44,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 82 transitions, 167 flow [2023-08-30 09:27:44,302 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:27:44,309 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 82 transitions, 167 flow [2023-08-30 09:27:44,311 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 82 transitions, 167 flow [2023-08-30 09:27:44,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 82 transitions, 167 flow [2023-08-30 09:27:44,328 INFO L130 PetriNetUnfolder]: 5/82 cut-off events. [2023-08-30 09:27:44,328 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:27:44,329 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. [2023-08-30 09:27:44,330 INFO L119 LiptonReduction]: Number of co-enabled transitions 1458 [2023-08-30 09:27:46,211 INFO L134 LiptonReduction]: Checked pairs total: 3440 [2023-08-30 09:27:46,211 INFO L136 LiptonReduction]: Total number of compositions: 73 [2023-08-30 09:27:46,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:27:46,229 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;@28b471d6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:27:46,229 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-30 09:27:46,233 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-08-30 09:27:46,233 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:27:46,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:46,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 09:27:46,234 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)] === [2023-08-30 09:27:46,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:46,238 INFO L85 PathProgramCache]: Analyzing trace with hash 347052882, now seen corresponding path program 1 times [2023-08-30 09:27:46,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:46,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064891163] [2023-08-30 09:27:46,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:46,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:46,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:46,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:46,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064891163] [2023-08-30 09:27:46,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064891163] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:27:46,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:27:46,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:27:46,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422261591] [2023-08-30 09:27:46,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:27:46,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:27:46,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:27:46,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:27:46,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:27:46,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 174 [2023-08-30 09:27:46,535 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) [2023-08-30 09:27:46,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:27:46,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 174 [2023-08-30 09:27:46,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:27:46,598 INFO L130 PetriNetUnfolder]: 110/230 cut-off events. [2023-08-30 09:27:46,598 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:27:46,599 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. [2023-08-30 09:27:46,601 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 27 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-08-30 09:27:46,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 32 transitions, 127 flow [2023-08-30 09:27:46,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:27:46,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:27:46,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2023-08-30 09:27:46,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553639846743295 [2023-08-30 09:27:46,614 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2023-08-30 09:27:46,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2023-08-30 09:27:46,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:27:46,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2023-08-30 09:27:46,621 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) [2023-08-30 09:27:46,625 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) [2023-08-30 09:27:46,625 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) [2023-08-30 09:27:46,627 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 49 flow. Second operand 3 states and 289 transitions. [2023-08-30 09:27:46,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 32 transitions, 127 flow [2023-08-30 09:27:46,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:27:46,631 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 73 flow [2023-08-30 09:27:46,632 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} [2023-08-30 09:27:46,635 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-08-30 09:27:46,635 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 73 flow [2023-08-30 09:27:46,636 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) [2023-08-30 09:27:46,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:46,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:27:46,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 09:27:46,637 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)] === [2023-08-30 09:27:46,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:46,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1489620701, now seen corresponding path program 1 times [2023-08-30 09:27:46,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:46,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512932064] [2023-08-30 09:27:46,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:46,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:46,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:46,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:46,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512932064] [2023-08-30 09:27:46,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512932064] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:27:46,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:27:46,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:27:46,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020981331] [2023-08-30 09:27:46,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:27:46,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:27:46,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:27:46,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:27:46,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:27:46,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 174 [2023-08-30 09:27:46,709 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) [2023-08-30 09:27:46,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:27:46,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 174 [2023-08-30 09:27:46,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:27:46,791 INFO L130 PetriNetUnfolder]: 123/262 cut-off events. [2023-08-30 09:27:46,791 INFO L131 PetriNetUnfolder]: For 7/25 co-relation queries the response was YES. [2023-08-30 09:27:46,792 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. [2023-08-30 09:27:46,822 INFO L137 encePairwiseOnDemand]: 169/174 looper letters, 29 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-30 09:27:46,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 37 transitions, 165 flow [2023-08-30 09:27:46,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:27:46,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:27:46,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2023-08-30 09:27:46,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2023-08-30 09:27:46,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2023-08-30 09:27:46,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2023-08-30 09:27:46,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:27:46,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2023-08-30 09:27:46,833 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) [2023-08-30 09:27:46,835 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) [2023-08-30 09:27:46,836 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) [2023-08-30 09:27:46,836 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 73 flow. Second operand 3 states and 294 transitions. [2023-08-30 09:27:46,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 37 transitions, 165 flow [2023-08-30 09:27:46,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 37 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:27:46,839 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 86 flow [2023-08-30 09:27:46,840 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} [2023-08-30 09:27:46,840 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-08-30 09:27:46,840 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 86 flow [2023-08-30 09:27:46,841 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) [2023-08-30 09:27:46,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:46,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:27:46,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 09:27:46,842 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)] === [2023-08-30 09:27:46,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:46,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1375754503, now seen corresponding path program 1 times [2023-08-30 09:27:46,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:46,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807520181] [2023-08-30 09:27:46,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:46,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:46,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:46,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:46,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807520181] [2023-08-30 09:27:46,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807520181] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:27:46,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:27:46,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:27:46,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318088856] [2023-08-30 09:27:46,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:27:46,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:27:46,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:27:46,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:27:46,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:27:46,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-30 09:27:46,952 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) [2023-08-30 09:27:46,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:27:46,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-30 09:27:46,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:27:47,039 INFO L130 PetriNetUnfolder]: 156/417 cut-off events. [2023-08-30 09:27:47,040 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2023-08-30 09:27:47,041 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. [2023-08-30 09:27:47,043 INFO L137 encePairwiseOnDemand]: 169/174 looper letters, 32 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-08-30 09:27:47,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 204 flow [2023-08-30 09:27:47,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:27:47,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:27:47,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2023-08-30 09:27:47,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574712643678161 [2023-08-30 09:27:47,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 291 transitions. [2023-08-30 09:27:47,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 291 transitions. [2023-08-30 09:27:47,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:27:47,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 291 transitions. [2023-08-30 09:27:47,046 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) [2023-08-30 09:27:47,047 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) [2023-08-30 09:27:47,048 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) [2023-08-30 09:27:47,048 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 86 flow. Second operand 3 states and 291 transitions. [2023-08-30 09:27:47,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 204 flow [2023-08-30 09:27:47,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:27:47,050 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 100 flow [2023-08-30 09:27:47,050 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} [2023-08-30 09:27:47,051 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2023-08-30 09:27:47,051 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 100 flow [2023-08-30 09:27:47,051 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) [2023-08-30 09:27:47,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:47,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:27:47,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 09:27:47,052 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)] === [2023-08-30 09:27:47,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:47,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1301367715, now seen corresponding path program 1 times [2023-08-30 09:27:47,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:47,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129741692] [2023-08-30 09:27:47,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:47,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:47,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:47,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:47,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129741692] [2023-08-30 09:27:47,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129741692] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:27:47,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:27:47,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:27:47,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622682500] [2023-08-30 09:27:47,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:27:47,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:27:47,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:27:47,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:27:47,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:27:47,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-30 09:27:47,133 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) [2023-08-30 09:27:47,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:27:47,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-30 09:27:47,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:27:47,186 INFO L130 PetriNetUnfolder]: 59/220 cut-off events. [2023-08-30 09:27:47,186 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2023-08-30 09:27:47,189 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. [2023-08-30 09:27:47,191 INFO L137 encePairwiseOnDemand]: 166/174 looper letters, 15 selfloop transitions, 10 changer transitions 0/31 dead transitions. [2023-08-30 09:27:47,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 167 flow [2023-08-30 09:27:47,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:27:47,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:27:47,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2023-08-30 09:27:47,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2023-08-30 09:27:47,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2023-08-30 09:27:47,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2023-08-30 09:27:47,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:27:47,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2023-08-30 09:27:47,198 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) [2023-08-30 09:27:47,200 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) [2023-08-30 09:27:47,200 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) [2023-08-30 09:27:47,200 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 100 flow. Second operand 3 states and 282 transitions. [2023-08-30 09:27:47,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 167 flow [2023-08-30 09:27:47,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:27:47,203 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 118 flow [2023-08-30 09:27:47,203 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} [2023-08-30 09:27:47,205 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2023-08-30 09:27:47,205 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 118 flow [2023-08-30 09:27:47,205 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) [2023-08-30 09:27:47,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:47,206 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:27:47,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 09:27:47,206 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)] === [2023-08-30 09:27:47,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:47,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1301366572, now seen corresponding path program 1 times [2023-08-30 09:27:47,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:47,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487343108] [2023-08-30 09:27:47,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:47,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:47,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:47,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:47,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487343108] [2023-08-30 09:27:47,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487343108] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:27:47,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357732574] [2023-08-30 09:27:47,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:47,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:27:47,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:27:47,294 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:27:47,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 09:27:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:47,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 09:27:47,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:27:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:47,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:27:47,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357732574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:27:47,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:27:47,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-30 09:27:47,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915064018] [2023-08-30 09:27:47,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:27:47,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:27:47,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:27:47,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:27:47,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:27:47,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 174 [2023-08-30 09:27:47,543 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) [2023-08-30 09:27:47,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:27:47,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 174 [2023-08-30 09:27:47,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:27:47,640 INFO L130 PetriNetUnfolder]: 63/204 cut-off events. [2023-08-30 09:27:47,641 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-08-30 09:27:47,641 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. [2023-08-30 09:27:47,643 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 34 selfloop transitions, 6 changer transitions 0/42 dead transitions. [2023-08-30 09:27:47,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 42 transitions, 262 flow [2023-08-30 09:27:47,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 09:27:47,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 09:27:47,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 527 transitions. [2023-08-30 09:27:47,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047892720306514 [2023-08-30 09:27:47,645 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 527 transitions. [2023-08-30 09:27:47,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 527 transitions. [2023-08-30 09:27:47,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:27:47,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 527 transitions. [2023-08-30 09:27:47,646 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) [2023-08-30 09:27:47,648 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) [2023-08-30 09:27:47,648 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) [2023-08-30 09:27:47,648 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 118 flow. Second operand 6 states and 527 transitions. [2023-08-30 09:27:47,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 42 transitions, 262 flow [2023-08-30 09:27:47,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 42 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:27:47,650 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 127 flow [2023-08-30 09:27:47,651 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} [2023-08-30 09:27:47,651 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2023-08-30 09:27:47,651 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 127 flow [2023-08-30 09:27:47,652 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) [2023-08-30 09:27:47,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:47,652 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:27:47,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 09:27:47,852 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 [2023-08-30 09:27:47,853 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)] === [2023-08-30 09:27:47,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:47,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1301366570, now seen corresponding path program 1 times [2023-08-30 09:27:47,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:47,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515044137] [2023-08-30 09:27:47,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:47,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:47,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:47,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515044137] [2023-08-30 09:27:47,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515044137] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:27:47,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259186322] [2023-08-30 09:27:47,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:47,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:27:47,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:27:47,925 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:27:47,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 09:27:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:47,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 09:27:47,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:27:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:48,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:27:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:48,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259186322] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:27:48,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:27:48,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-08-30 09:27:48,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302681703] [2023-08-30 09:27:48,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:27:48,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 09:27:48,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:27:48,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 09:27:48,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 09:27:48,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 174 [2023-08-30 09:27:48,115 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) [2023-08-30 09:27:48,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:27:48,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 174 [2023-08-30 09:27:48,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:27:48,290 INFO L130 PetriNetUnfolder]: 167/484 cut-off events. [2023-08-30 09:27:48,290 INFO L131 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2023-08-30 09:27:48,291 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. [2023-08-30 09:27:48,293 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 85 selfloop transitions, 22 changer transitions 0/108 dead transitions. [2023-08-30 09:27:48,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 108 transitions, 653 flow [2023-08-30 09:27:48,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 09:27:48,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 09:27:48,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 982 transitions. [2023-08-30 09:27:48,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130616509926855 [2023-08-30 09:27:48,298 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 982 transitions. [2023-08-30 09:27:48,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 982 transitions. [2023-08-30 09:27:48,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:27:48,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 982 transitions. [2023-08-30 09:27:48,301 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) [2023-08-30 09:27:48,305 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) [2023-08-30 09:27:48,306 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) [2023-08-30 09:27:48,306 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 127 flow. Second operand 11 states and 982 transitions. [2023-08-30 09:27:48,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 108 transitions, 653 flow [2023-08-30 09:27:48,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 108 transitions, 649 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:27:48,311 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 311 flow [2023-08-30 09:27:48,312 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} [2023-08-30 09:27:48,312 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 26 predicate places. [2023-08-30 09:27:48,312 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 311 flow [2023-08-30 09:27:48,313 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) [2023-08-30 09:27:48,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:48,313 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 09:27:48,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 09:27:48,519 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 [2023-08-30 09:27:48,519 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)] === [2023-08-30 09:27:48,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:48,520 INFO L85 PathProgramCache]: Analyzing trace with hash -777781849, now seen corresponding path program 1 times [2023-08-30 09:27:48,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:48,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033040162] [2023-08-30 09:27:48,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:48,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:48,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:27:48,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:48,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033040162] [2023-08-30 09:27:48,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033040162] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:27:48,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:27:48,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:27:48,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955381401] [2023-08-30 09:27:48,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:27:48,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:27:48,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:27:48,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:27:48,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:27:48,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-30 09:27:48,577 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) [2023-08-30 09:27:48,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:27:48,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-30 09:27:48,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:27:48,630 INFO L130 PetriNetUnfolder]: 131/389 cut-off events. [2023-08-30 09:27:48,631 INFO L131 PetriNetUnfolder]: For 652/652 co-relation queries the response was YES. [2023-08-30 09:27:48,632 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. [2023-08-30 09:27:48,633 INFO L137 encePairwiseOnDemand]: 170/174 looper letters, 35 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2023-08-30 09:27:48,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 418 flow [2023-08-30 09:27:48,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:27:48,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:27:48,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2023-08-30 09:27:48,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2023-08-30 09:27:48,635 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2023-08-30 09:27:48,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2023-08-30 09:27:48,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:27:48,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2023-08-30 09:27:48,636 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) [2023-08-30 09:27:48,637 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) [2023-08-30 09:27:48,638 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) [2023-08-30 09:27:48,638 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 311 flow. Second operand 3 states and 282 transitions. [2023-08-30 09:27:48,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 418 flow [2023-08-30 09:27:48,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 389 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-30 09:27:48,642 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 294 flow [2023-08-30 09:27:48,643 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} [2023-08-30 09:27:48,643 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 26 predicate places. [2023-08-30 09:27:48,643 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 294 flow [2023-08-30 09:27:48,644 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) [2023-08-30 09:27:48,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:48,644 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 09:27:48,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 09:27:48,644 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)] === [2023-08-30 09:27:48,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:48,645 INFO L85 PathProgramCache]: Analyzing trace with hash -777781864, now seen corresponding path program 1 times [2023-08-30 09:27:48,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:48,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281350442] [2023-08-30 09:27:48,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:48,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:48,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:48,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281350442] [2023-08-30 09:27:48,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281350442] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:27:48,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258108990] [2023-08-30 09:27:48,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:48,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:27:48,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:27:48,686 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:27:48,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 09:27:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:48,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 09:27:48,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:27:48,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:48,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:27:48,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258108990] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:27:48,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:27:48,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 09:27:48,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507046958] [2023-08-30 09:27:48,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:27:48,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 09:27:48,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:27:48,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 09:27:48,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:27:48,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 174 [2023-08-30 09:27:48,791 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) [2023-08-30 09:27:48,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:27:48,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 174 [2023-08-30 09:27:48,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:27:48,879 INFO L130 PetriNetUnfolder]: 124/379 cut-off events. [2023-08-30 09:27:48,879 INFO L131 PetriNetUnfolder]: For 733/733 co-relation queries the response was YES. [2023-08-30 09:27:48,881 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. [2023-08-30 09:27:48,882 INFO L137 encePairwiseOnDemand]: 171/174 looper letters, 46 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-08-30 09:27:48,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 465 flow [2023-08-30 09:27:48,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:27:48,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:27:48,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 381 transitions. [2023-08-30 09:27:48,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5474137931034483 [2023-08-30 09:27:48,884 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 381 transitions. [2023-08-30 09:27:48,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 381 transitions. [2023-08-30 09:27:48,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:27:48,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 381 transitions. [2023-08-30 09:27:48,886 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) [2023-08-30 09:27:48,887 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) [2023-08-30 09:27:48,888 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) [2023-08-30 09:27:48,888 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 294 flow. Second operand 4 states and 381 transitions. [2023-08-30 09:27:48,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 465 flow [2023-08-30 09:27:48,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 60 transitions, 461 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:27:48,892 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 289 flow [2023-08-30 09:27:48,892 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} [2023-08-30 09:27:48,894 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2023-08-30 09:27:48,894 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 289 flow [2023-08-30 09:27:48,895 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) [2023-08-30 09:27:48,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:48,895 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 09:27:48,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 09:27:49,100 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 [2023-08-30 09:27:49,101 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)] === [2023-08-30 09:27:49,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:49,101 INFO L85 PathProgramCache]: Analyzing trace with hash 210246718, now seen corresponding path program 1 times [2023-08-30 09:27:49,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:49,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238927350] [2023-08-30 09:27:49,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:49,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:49,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:49,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:49,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238927350] [2023-08-30 09:27:49,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238927350] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:27:49,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:27:49,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:27:49,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360428879] [2023-08-30 09:27:49,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:27:49,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:27:49,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:27:49,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:27:49,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:27:49,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-30 09:27:49,142 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) [2023-08-30 09:27:49,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:27:49,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-30 09:27:49,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:27:49,196 INFO L130 PetriNetUnfolder]: 113/352 cut-off events. [2023-08-30 09:27:49,197 INFO L131 PetriNetUnfolder]: For 798/798 co-relation queries the response was YES. [2023-08-30 09:27:49,198 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. [2023-08-30 09:27:49,199 INFO L137 encePairwiseOnDemand]: 172/174 looper letters, 42 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-08-30 09:27:49,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 55 transitions, 465 flow [2023-08-30 09:27:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:27:49,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:27:49,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-08-30 09:27:49,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2023-08-30 09:27:49,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-08-30 09:27:49,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-08-30 09:27:49,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:27:49,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-08-30 09:27:49,202 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) [2023-08-30 09:27:49,203 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) [2023-08-30 09:27:49,203 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) [2023-08-30 09:27:49,204 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 289 flow. Second operand 3 states and 280 transitions. [2023-08-30 09:27:49,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 55 transitions, 465 flow [2023-08-30 09:27:49,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 459 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:27:49,207 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 283 flow [2023-08-30 09:27:49,207 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} [2023-08-30 09:27:49,208 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 26 predicate places. [2023-08-30 09:27:49,208 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 283 flow [2023-08-30 09:27:49,208 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) [2023-08-30 09:27:49,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:49,209 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 09:27:49,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 09:27:49,209 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)] === [2023-08-30 09:27:49,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:49,209 INFO L85 PathProgramCache]: Analyzing trace with hash 210246719, now seen corresponding path program 1 times [2023-08-30 09:27:49,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:49,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421896277] [2023-08-30 09:27:49,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:49,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:49,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:27:49,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:49,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421896277] [2023-08-30 09:27:49,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421896277] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:27:49,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:27:49,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:27:49,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793078783] [2023-08-30 09:27:49,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:27:49,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:27:49,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:27:49,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:27:49,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:27:49,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 174 [2023-08-30 09:27:49,257 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) [2023-08-30 09:27:49,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:27:49,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 174 [2023-08-30 09:27:49,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:27:49,302 INFO L130 PetriNetUnfolder]: 99/310 cut-off events. [2023-08-30 09:27:49,303 INFO L131 PetriNetUnfolder]: For 698/698 co-relation queries the response was YES. [2023-08-30 09:27:49,304 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. [2023-08-30 09:27:49,305 INFO L137 encePairwiseOnDemand]: 170/174 looper letters, 39 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2023-08-30 09:27:49,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 459 flow [2023-08-30 09:27:49,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:27:49,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:27:49,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2023-08-30 09:27:49,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306513409961686 [2023-08-30 09:27:49,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2023-08-30 09:27:49,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2023-08-30 09:27:49,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:27:49,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2023-08-30 09:27:49,308 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) [2023-08-30 09:27:49,309 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) [2023-08-30 09:27:49,309 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) [2023-08-30 09:27:49,309 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 283 flow. Second operand 3 states and 277 transitions. [2023-08-30 09:27:49,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 459 flow [2023-08-30 09:27:49,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:27:49,313 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 294 flow [2023-08-30 09:27:49,313 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} [2023-08-30 09:27:49,314 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2023-08-30 09:27:49,314 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 294 flow [2023-08-30 09:27:49,314 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) [2023-08-30 09:27:49,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:49,315 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1] [2023-08-30 09:27:49,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 09:27:49,315 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)] === [2023-08-30 09:27:49,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:49,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1690907170, now seen corresponding path program 2 times [2023-08-30 09:27:49,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:49,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117704297] [2023-08-30 09:27:49,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:49,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:49,414 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:49,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:49,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117704297] [2023-08-30 09:27:49,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117704297] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:27:49,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011380908] [2023-08-30 09:27:49,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 09:27:49,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:27:49,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:27:49,416 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:27:49,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 09:27:49,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 09:27:49,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:27:49,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 09:27:49,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:27:49,561 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:49,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:27:49,676 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:49,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011380908] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:27:49,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:27:49,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 09:27:49,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199450531] [2023-08-30 09:27:49,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:27:49,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 09:27:49,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:27:49,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 09:27:49,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-30 09:27:49,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 174 [2023-08-30 09:27:49,754 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) [2023-08-30 09:27:49,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:27:49,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 174 [2023-08-30 09:27:49,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:27:50,434 INFO L130 PetriNetUnfolder]: 412/1123 cut-off events. [2023-08-30 09:27:50,434 INFO L131 PetriNetUnfolder]: For 4756/4756 co-relation queries the response was YES. [2023-08-30 09:27:50,437 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. [2023-08-30 09:27:50,442 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 265 selfloop transitions, 83 changer transitions 0/349 dead transitions. [2023-08-30 09:27:50,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 349 transitions, 2915 flow [2023-08-30 09:27:50,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-30 09:27:50,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-30 09:27:50,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3450 transitions. [2023-08-30 09:27:50,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083996463306808 [2023-08-30 09:27:50,451 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3450 transitions. [2023-08-30 09:27:50,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3450 transitions. [2023-08-30 09:27:50,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:27:50,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3450 transitions. [2023-08-30 09:27:50,459 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) [2023-08-30 09:27:50,467 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) [2023-08-30 09:27:50,469 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) [2023-08-30 09:27:50,469 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 294 flow. Second operand 39 states and 3450 transitions. [2023-08-30 09:27:50,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 349 transitions, 2915 flow [2023-08-30 09:27:50,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 349 transitions, 2835 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:27:50,481 INFO L231 Difference]: Finished difference. Result has 119 places, 110 transitions, 1181 flow [2023-08-30 09:27:50,481 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} [2023-08-30 09:27:50,482 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 94 predicate places. [2023-08-30 09:27:50,482 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 110 transitions, 1181 flow [2023-08-30 09:27:50,482 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) [2023-08-30 09:27:50,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:50,483 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1] [2023-08-30 09:27:50,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 09:27:50,690 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 [2023-08-30 09:27:50,691 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)] === [2023-08-30 09:27:50,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:50,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1217028078, now seen corresponding path program 3 times [2023-08-30 09:27:50,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:50,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724035678] [2023-08-30 09:27:50,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:50,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:50,997 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:50,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:50,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724035678] [2023-08-30 09:27:50,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724035678] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:27:50,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262582787] [2023-08-30 09:27:50,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 09:27:50,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:27:50,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:27:51,001 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:27:51,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 09:27:51,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-08-30 09:27:51,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:27:51,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 09:27:51,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:27:51,218 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:51,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:27:51,481 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:51,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262582787] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:27:51,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:27:51,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2023-08-30 09:27:51,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296023607] [2023-08-30 09:27:51,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:27:51,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 09:27:51,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:27:51,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 09:27:51,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-08-30 09:27:51,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 174 [2023-08-30 09:27:51,586 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) [2023-08-30 09:27:51,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:27:51,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 174 [2023-08-30 09:27:51,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:27:55,476 INFO L130 PetriNetUnfolder]: 1562/4261 cut-off events. [2023-08-30 09:27:55,476 INFO L131 PetriNetUnfolder]: For 147750/147750 co-relation queries the response was YES. [2023-08-30 09:27:55,490 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. [2023-08-30 09:27:55,510 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 951 selfloop transitions, 348 changer transitions 0/1300 dead transitions. [2023-08-30 09:27:55,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 1300 transitions, 13132 flow [2023-08-30 09:27:55,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-08-30 09:27:55,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2023-08-30 09:27:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 12666 transitions. [2023-08-30 09:27:55,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5090426814564746 [2023-08-30 09:27:55,532 INFO L72 ComplementDD]: Start complementDD. Operand 143 states and 12666 transitions. [2023-08-30 09:27:55,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 143 states and 12666 transitions. [2023-08-30 09:27:55,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:27:55,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 143 states and 12666 transitions. [2023-08-30 09:27:55,589 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) [2023-08-30 09:27:55,634 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) [2023-08-30 09:27:55,640 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) [2023-08-30 09:27:55,641 INFO L175 Difference]: Start difference. First operand has 119 places, 110 transitions, 1181 flow. Second operand 143 states and 12666 transitions. [2023-08-30 09:27:55,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 1300 transitions, 13132 flow [2023-08-30 09:27:55,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 1300 transitions, 12919 flow, removed 99 selfloop flow, removed 5 redundant places. [2023-08-30 09:27:55,830 INFO L231 Difference]: Finished difference. Result has 365 places, 389 transitions, 5608 flow [2023-08-30 09:27:55,831 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} [2023-08-30 09:27:55,832 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 340 predicate places. [2023-08-30 09:27:55,832 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 389 transitions, 5608 flow [2023-08-30 09:27:55,833 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) [2023-08-30 09:27:55,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:55,833 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1] [2023-08-30 09:27:55,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 09:27:56,039 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 [2023-08-30 09:27:56,039 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)] === [2023-08-30 09:27:56,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:56,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1662985230, now seen corresponding path program 4 times [2023-08-30 09:27:56,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:56,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481929107] [2023-08-30 09:27:56,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:56,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:57,055 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:57,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:57,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481929107] [2023-08-30 09:27:57,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481929107] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:27:57,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609925047] [2023-08-30 09:27:57,056 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 09:27:57,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:27:57,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:27:57,058 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:27:57,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 09:27:57,190 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 09:27:57,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:27:57,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-30 09:27:57,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:27:57,333 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:57,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:27:58,138 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:58,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609925047] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:27:58,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:27:58,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 64 [2023-08-30 09:27:58,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778765750] [2023-08-30 09:27:58,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:27:58,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-08-30 09:27:58,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:27:58,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-08-30 09:27:58,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290 [2023-08-30 09:27:58,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 174 [2023-08-30 09:27:58,349 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) [2023-08-30 09:27:58,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:27:58,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 174 [2023-08-30 09:27:58,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:28:27,476 INFO L130 PetriNetUnfolder]: 6316/17279 cut-off events. [2023-08-30 09:28:27,476 INFO L131 PetriNetUnfolder]: For 9071210/9071210 co-relation queries the response was YES. [2023-08-30 09:28:27,593 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. [2023-08-30 09:28:27,665 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 3573 selfloop transitions, 1493 changer transitions 0/5067 dead transitions. [2023-08-30 09:28:27,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 907 places, 5067 transitions, 64777 flow [2023-08-30 09:28:27,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 543 states. [2023-08-30 09:28:27,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2023-08-30 09:28:27,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 48090 transitions. [2023-08-30 09:28:27,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089858385724265 [2023-08-30 09:28:27,729 INFO L72 ComplementDD]: Start complementDD. Operand 543 states and 48090 transitions. [2023-08-30 09:28:27,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 543 states and 48090 transitions. [2023-08-30 09:28:27,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:28:27,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 543 states and 48090 transitions. [2023-08-30 09:28:27,826 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) [2023-08-30 09:28:27,935 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) [2023-08-30 09:28:27,969 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) [2023-08-30 09:28:27,970 INFO L175 Difference]: Start difference. First operand has 365 places, 389 transitions, 5608 flow. Second operand 543 states and 48090 transitions. [2023-08-30 09:28:27,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 907 places, 5067 transitions, 64777 flow [2023-08-30 09:28:38,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 885 places, 5067 transitions, 63982 flow, removed 361 selfloop flow, removed 22 redundant places. [2023-08-30 09:28:38,305 INFO L231 Difference]: Finished difference. Result has 1298 places, 1566 transitions, 28535 flow [2023-08-30 09:28:38,306 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} [2023-08-30 09:28:38,307 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 1273 predicate places. [2023-08-30 09:28:38,307 INFO L495 AbstractCegarLoop]: Abstraction has has 1298 places, 1566 transitions, 28535 flow [2023-08-30 09:28:38,308 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) [2023-08-30 09:28:38,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:28:38,308 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 1, 1, 1, 1] [2023-08-30 09:28:38,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 09:28:38,508 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 [2023-08-30 09:28:38,508 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)] === [2023-08-30 09:28:38,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:28:38,509 INFO L85 PathProgramCache]: Analyzing trace with hash -553702322, now seen corresponding path program 5 times [2023-08-30 09:28:38,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:28:38,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923263291] [2023-08-30 09:28:38,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:28:38,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:28:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:28:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:28:41,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:28:41,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923263291] [2023-08-30 09:28:41,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923263291] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:28:41,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836270046] [2023-08-30 09:28:41,627 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 09:28:41,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:28:41,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:28:41,628 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:28:41,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 09:28:41,923 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2023-08-30 09:28:41,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:28:41,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-30 09:28:41,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:28:43,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 1921 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:28:43,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:28:43,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836270046] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:28:43,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:28:43,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [63] total 96 [2023-08-30 09:28:43,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919872901] [2023-08-30 09:28:43,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:28:43,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-30 09:28:43,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:28:43,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-30 09:28:43,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1615, Invalid=7505, Unknown=0, NotChecked=0, Total=9120 [2023-08-30 09:28:43,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-30 09:28:43,090 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) [2023-08-30 09:28:43,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:28:43,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-30 09:28:43,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:30:19,648 INFO L130 PetriNetUnfolder]: 42075/101398 cut-off events. [2023-08-30 09:30:19,649 INFO L131 PetriNetUnfolder]: For 65965346/65965346 co-relation queries the response was YES. [2023-08-30 09:30:36,258 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. [2023-08-30 09:30:36,868 INFO L137 encePairwiseOnDemand]: 170/174 looper letters, 7705 selfloop transitions, 40 changer transitions 1/8498 dead transitions. [2023-08-30 09:30:36,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1320 places, 8498 transitions, 170422 flow [2023-08-30 09:30:36,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-30 09:30:36,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-30 09:30:36,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2190 transitions. [2023-08-30 09:30:36,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5472263868065967 [2023-08-30 09:30:36,872 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2190 transitions. [2023-08-30 09:30:36,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2190 transitions. [2023-08-30 09:30:36,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:30:36,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2190 transitions. [2023-08-30 09:30:36,904 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) [2023-08-30 09:30:36,907 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) [2023-08-30 09:30:36,908 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) [2023-08-30 09:30:36,908 INFO L175 Difference]: Start difference. First operand has 1298 places, 1566 transitions, 28535 flow. Second operand 23 states and 2190 transitions. [2023-08-30 09:30:36,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1320 places, 8498 transitions, 170422 flow Killed by 15