./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/04-mutex_36-trylock_nr.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/goblint-regression/04-mutex_36-trylock_nr.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 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e --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 09:33:32,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 09:33:32,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 09:33:32,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 09:33:32,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 09:33:32,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 09:33:32,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 09:33:32,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 09:33:32,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 09:33:32,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 09:33:32,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 09:33:32,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 09:33:32,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 09:33:32,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 09:33:32,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 09:33:32,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 09:33:32,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 09:33:32,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 09:33:32,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 09:33:32,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 09:33:32,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 09:33:32,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 09:33:32,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 09:33:32,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 09:33:32,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 09:33:32,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 09:33:32,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 09:33:32,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 09:33:32,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 09:33:32,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 09:33:32,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 09:33:32,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 09:33:32,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 09:33:32,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 09:33:32,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 09:33:32,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 09:33:32,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 09:33:32,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 09:33:32,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 09:33:32,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 09:33:32,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 09:33:32,236 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 09:33:32,253 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 09:33:32,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 09:33:32,254 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 09:33:32,254 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 09:33:32,255 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 09:33:32,255 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 09:33:32,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 09:33:32,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 09:33:32,255 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 09:33:32,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 09:33:32,256 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 09:33:32,256 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 09:33:32,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 09:33:32,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 09:33:32,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 09:33:32,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 09:33:32,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 09:33:32,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 09:33:32,257 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 09:33:32,258 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 09:33:32,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 09:33:32,258 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 09:33:32,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 09:33:32,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 09:33:32,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 09:33:32,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 09:33:32,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:33:32,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 09:33:32,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 09:33:32,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 09:33:32,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 09:33:32,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 09:33:32,260 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 09:33:32,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 09:33:32,260 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 09:33:32,260 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 09:33:32,260 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 09:33:32,260 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 09:33:32,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 09:33:32,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 09:33:32,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 09:33:32,529 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 09:33:32,530 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 09:33:32,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_36-trylock_nr.i [2023-08-30 09:33:33,470 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 09:33:33,752 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 09:33:33,753 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_36-trylock_nr.i [2023-08-30 09:33:33,769 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44729681c/e529bfc0fcc9498eb1302cffd8bd7d22/FLAG72af4017c [2023-08-30 09:33:33,784 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44729681c/e529bfc0fcc9498eb1302cffd8bd7d22 [2023-08-30 09:33:33,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 09:33:33,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 09:33:33,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 09:33:33,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 09:33:33,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 09:33:33,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:33:33" (1/1) ... [2023-08-30 09:33:33,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dcbae90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:33:33, skipping insertion in model container [2023-08-30 09:33:33,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:33:33" (1/1) ... [2023-08-30 09:33:33,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 09:33:33,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 09:33:34,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:33:34,422 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 09:33:34,460 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:33:34,548 WARN L667 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 09:33:34,548 WARN L667 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 09:33:34,548 WARN L667 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 09:33:34,548 WARN L667 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 09:33:34,552 INFO L208 MainTranslator]: Completed translation [2023-08-30 09:33:34,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:33:34 WrapperNode [2023-08-30 09:33:34,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 09:33:34,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 09:33:34,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 09:33:34,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 09:33:34,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:33:34" (1/1) ... [2023-08-30 09:33:34,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:33:34" (1/1) ... [2023-08-30 09:33:34,603 INFO L138 Inliner]: procedures = 524, calls = 69, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 133 [2023-08-30 09:33:34,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 09:33:34,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 09:33:34,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 09:33:34,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 09:33:34,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:33:34" (1/1) ... [2023-08-30 09:33:34,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:33:34" (1/1) ... [2023-08-30 09:33:34,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:33:34" (1/1) ... [2023-08-30 09:33:34,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:33:34" (1/1) ... [2023-08-30 09:33:34,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:33:34" (1/1) ... [2023-08-30 09:33:34,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:33:34" (1/1) ... [2023-08-30 09:33:34,639 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:33:34" (1/1) ... [2023-08-30 09:33:34,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:33:34" (1/1) ... [2023-08-30 09:33:34,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 09:33:34,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 09:33:34,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 09:33:34,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 09:33:34,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:33:34" (1/1) ... [2023-08-30 09:33:34,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:33:34,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:33:34,675 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 09:33:34,683 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 09:33:34,699 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2023-08-30 09:33:34,700 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2023-08-30 09:33:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-08-30 09:33:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2023-08-30 09:33:34,702 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2023-08-30 09:33:34,703 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-08-30 09:33:34,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 09:33:34,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 09:33:34,703 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 09:33:34,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 09:33:34,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 09:33:34,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 09:33:34,704 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-08-30 09:33:34,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 09:33:34,704 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-08-30 09:33:34,704 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-08-30 09:33:34,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 09:33:34,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 09:33:34,706 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 09:33:34,964 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 09:33:34,965 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 09:33:35,194 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 09:33:35,200 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 09:33:35,200 INFO L302 CfgBuilder]: Removed 19 assume(true) statements. [2023-08-30 09:33:35,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:33:35 BoogieIcfgContainer [2023-08-30 09:33:35,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 09:33:35,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 09:33:35,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 09:33:35,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 09:33:35,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 09:33:33" (1/3) ... [2023-08-30 09:33:35,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6a0e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:33:35, skipping insertion in model container [2023-08-30 09:33:35,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:33:34" (2/3) ... [2023-08-30 09:33:35,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6a0e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:33:35, skipping insertion in model container [2023-08-30 09:33:35,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:33:35" (3/3) ... [2023-08-30 09:33:35,207 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr.i [2023-08-30 09:33:35,211 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 09:33:35,217 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 09:33:35,217 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 09:33:35,217 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 09:33:35,280 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 09:33:35,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 250 transitions, 516 flow [2023-08-30 09:33:35,387 INFO L130 PetriNetUnfolder]: 32/248 cut-off events. [2023-08-30 09:33:35,387 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 09:33:35,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 248 events. 32/248 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 559 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 150. Up to 5 conditions per place. [2023-08-30 09:33:35,393 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 250 transitions, 516 flow [2023-08-30 09:33:35,399 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 221 transitions, 451 flow [2023-08-30 09:33:35,402 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:33:35,410 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 221 transitions, 451 flow [2023-08-30 09:33:35,411 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 221 transitions, 451 flow [2023-08-30 09:33:35,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 221 transitions, 451 flow [2023-08-30 09:33:35,453 INFO L130 PetriNetUnfolder]: 28/221 cut-off events. [2023-08-30 09:33:35,454 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 09:33:35,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 221 events. 28/221 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 500 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 150. Up to 5 conditions per place. [2023-08-30 09:33:35,462 INFO L119 LiptonReduction]: Number of co-enabled transitions 13862 [2023-08-30 09:33:45,064 INFO L134 LiptonReduction]: Checked pairs total: 14838 [2023-08-30 09:33:45,064 INFO L136 LiptonReduction]: Total number of compositions: 247 [2023-08-30 09:33:45,079 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:33:45,083 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;@ad135de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:33:45,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 09:33:45,085 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 09:33:45,085 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:33:45,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:33:45,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 09:33:45,087 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:33:45,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:33:45,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1025, now seen corresponding path program 1 times [2023-08-30 09:33:45,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:33:45,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893691301] [2023-08-30 09:33:45,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:33:45,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:33:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:33:45,254 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 09:33:45,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:33:45,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893691301] [2023-08-30 09:33:45,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893691301] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:33:45,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:33:45,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 09:33:45,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152486628] [2023-08-30 09:33:45,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:33:45,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 09:33:45,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:33:45,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 09:33:45,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 09:33:45,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 497 [2023-08-30 09:33:45,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 50 transitions, 109 flow. Second operand has 2 states, 2 states have (on average 219.5) internal successors, (439), 2 states have internal predecessors, (439), 0 states have call successors, (0), 0 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 09:33:45,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:33:45,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 497 [2023-08-30 09:33:45,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:33:45,377 INFO L130 PetriNetUnfolder]: 328/595 cut-off events. [2023-08-30 09:33:45,377 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-30 09:33:45,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1133 conditions, 595 events. 328/595 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 2837 event pairs, 234 based on Foata normal form. 79/340 useless extension candidates. Maximal degree in co-relation 1056. Up to 512 conditions per place. [2023-08-30 09:33:45,382 INFO L137 encePairwiseOnDemand]: 484/497 looper letters, 25 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-08-30 09:33:45,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 117 flow [2023-08-30 09:33:45,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 09:33:45,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 09:33:45,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 476 transitions. [2023-08-30 09:33:45,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4788732394366197 [2023-08-30 09:33:45,397 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 476 transitions. [2023-08-30 09:33:45,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 476 transitions. [2023-08-30 09:33:45,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:33:45,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 476 transitions. [2023-08-30 09:33:45,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 238.0) internal successors, (476), 2 states have internal predecessors, (476), 0 states have call successors, (0), 0 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 09:33:45,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 497.0) internal successors, (1491), 3 states have internal predecessors, (1491), 0 states have call successors, (0), 0 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 09:33:45,409 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 497.0) internal successors, (1491), 3 states have internal predecessors, (1491), 0 states have call successors, (0), 0 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 09:33:45,410 INFO L175 Difference]: Start difference. First operand has 39 places, 50 transitions, 109 flow. Second operand 2 states and 476 transitions. [2023-08-30 09:33:45,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 117 flow [2023-08-30 09:33:45,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 09:33:45,413 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 62 flow [2023-08-30 09:33:45,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2023-08-30 09:33:45,419 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-30 09:33:45,420 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 62 flow [2023-08-30 09:33:45,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 219.5) internal successors, (439), 2 states have internal predecessors, (439), 0 states have call successors, (0), 0 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 09:33:45,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:33:45,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 09:33:45,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 09:33:45,422 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:33:45,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:33:45,428 INFO L85 PathProgramCache]: Analyzing trace with hash 968796351, now seen corresponding path program 1 times [2023-08-30 09:33:45,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:33:45,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988272213] [2023-08-30 09:33:45,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:33:45,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:33:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:33:45,587 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 09:33:45,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:33:45,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988272213] [2023-08-30 09:33:45,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988272213] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:33:45,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:33:45,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:33:45,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87777127] [2023-08-30 09:33:45,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:33:45,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:33:45,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:33:45,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:33:45,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:33:45,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-08-30 09:33:45,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 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 09:33:45,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:33:45,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-08-30 09:33:45,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:33:45,683 INFO L130 PetriNetUnfolder]: 585/918 cut-off events. [2023-08-30 09:33:45,683 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 09:33:45,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1836 conditions, 918 events. 585/918 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3882 event pairs, 157 based on Foata normal form. 28/446 useless extension candidates. Maximal degree in co-relation 1833. Up to 603 conditions per place. [2023-08-30 09:33:45,687 INFO L137 encePairwiseOnDemand]: 490/497 looper letters, 44 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2023-08-30 09:33:45,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 49 transitions, 199 flow [2023-08-30 09:33:45,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:33:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:33:45,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2023-08-30 09:33:45,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46680080482897385 [2023-08-30 09:33:45,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2023-08-30 09:33:45,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2023-08-30 09:33:45,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:33:45,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2023-08-30 09:33:45,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.0) internal successors, (696), 3 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 09:33:45,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 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 09:33:45,694 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 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 09:33:45,694 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 62 flow. Second operand 3 states and 696 transitions. [2023-08-30 09:33:45,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 49 transitions, 199 flow [2023-08-30 09:33:45,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 49 transitions, 199 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:33:45,695 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 87 flow [2023-08-30 09:33:45,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-08-30 09:33:45,696 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -6 predicate places. [2023-08-30 09:33:45,696 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 87 flow [2023-08-30 09:33:45,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 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 09:33:45,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:33:45,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 09:33:45,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 09:33:45,697 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:33:45,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:33:45,698 INFO L85 PathProgramCache]: Analyzing trace with hash -32081301, now seen corresponding path program 1 times [2023-08-30 09:33:45,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:33:45,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184305002] [2023-08-30 09:33:45,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:33:45,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:33:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:33:45,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:45,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:33:45,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184305002] [2023-08-30 09:33:45,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184305002] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:33:45,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:33:45,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:33:45,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923939967] [2023-08-30 09:33:45,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:33:45,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:33:45,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:33:45,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:33:45,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:33:45,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-08-30 09:33:45,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 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 09:33:45,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:33:45,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-08-30 09:33:45,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:33:45,867 INFO L130 PetriNetUnfolder]: 566/909 cut-off events. [2023-08-30 09:33:45,867 INFO L131 PetriNetUnfolder]: For 11/20 co-relation queries the response was YES. [2023-08-30 09:33:45,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1967 conditions, 909 events. 566/909 cut-off events. For 11/20 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4121 event pairs, 106 based on Foata normal form. 0/487 useless extension candidates. Maximal degree in co-relation 1962. Up to 670 conditions per place. [2023-08-30 09:33:45,871 INFO L137 encePairwiseOnDemand]: 495/497 looper letters, 41 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-08-30 09:33:45,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 46 transitions, 199 flow [2023-08-30 09:33:45,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:33:45,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:33:45,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 687 transitions. [2023-08-30 09:33:45,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607645875251509 [2023-08-30 09:33:45,873 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 687 transitions. [2023-08-30 09:33:45,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 687 transitions. [2023-08-30 09:33:45,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:33:45,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 687 transitions. [2023-08-30 09:33:45,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 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 09:33:45,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 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 09:33:45,877 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 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 09:33:45,877 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 87 flow. Second operand 3 states and 687 transitions. [2023-08-30 09:33:45,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 46 transitions, 199 flow [2023-08-30 09:33:45,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 46 transitions, 197 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:33:45,879 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 83 flow [2023-08-30 09:33:45,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2023-08-30 09:33:45,879 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-08-30 09:33:45,880 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 83 flow [2023-08-30 09:33:45,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 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 09:33:45,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:33:45,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 09:33:45,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 09:33:45,881 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:33:45,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:33:45,881 INFO L85 PathProgramCache]: Analyzing trace with hash -29932719, now seen corresponding path program 1 times [2023-08-30 09:33:45,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:33:45,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546391890] [2023-08-30 09:33:45,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:33:45,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:33:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:33:45,930 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 09:33:45,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:33:45,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546391890] [2023-08-30 09:33:45,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546391890] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:33:45,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:33:45,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:33:45,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97968602] [2023-08-30 09:33:45,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:33:45,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:33:45,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:33:45,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:33:45,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:33:45,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 497 [2023-08-30 09:33:45,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 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 09:33:45,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:33:45,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 497 [2023-08-30 09:33:45,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:33:46,056 INFO L130 PetriNetUnfolder]: 891/1562 cut-off events. [2023-08-30 09:33:46,057 INFO L131 PetriNetUnfolder]: For 185/185 co-relation queries the response was YES. [2023-08-30 09:33:46,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3333 conditions, 1562 events. 891/1562 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 8839 event pairs, 410 based on Foata normal form. 0/1019 useless extension candidates. Maximal degree in co-relation 3328. Up to 874 conditions per place. [2023-08-30 09:33:46,062 INFO L137 encePairwiseOnDemand]: 493/497 looper letters, 42 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-30 09:33:46,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 48 transitions, 221 flow [2023-08-30 09:33:46,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:33:46,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:33:46,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 693 transitions. [2023-08-30 09:33:46,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4647887323943662 [2023-08-30 09:33:46,064 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 693 transitions. [2023-08-30 09:33:46,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 693 transitions. [2023-08-30 09:33:46,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:33:46,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 693 transitions. [2023-08-30 09:33:46,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 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 09:33:46,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 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 09:33:46,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 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 09:33:46,068 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 83 flow. Second operand 3 states and 693 transitions. [2023-08-30 09:33:46,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 48 transitions, 221 flow [2023-08-30 09:33:46,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 48 transitions, 221 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:33:46,070 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 97 flow [2023-08-30 09:33:46,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2023-08-30 09:33:46,070 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2023-08-30 09:33:46,071 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 97 flow [2023-08-30 09:33:46,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 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 09:33:46,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:33:46,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 09:33:46,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 09:33:46,071 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:33:46,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:33:46,072 INFO L85 PathProgramCache]: Analyzing trace with hash -32081364, now seen corresponding path program 1 times [2023-08-30 09:33:46,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:33:46,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684299331] [2023-08-30 09:33:46,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:33:46,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:33:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:33:46,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:46,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:33:46,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684299331] [2023-08-30 09:33:46,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684299331] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:33:46,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676576362] [2023-08-30 09:33:46,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:33:46,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:33:46,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:33:46,134 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 09:33:46,141 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 09:33:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:33:46,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 09:33:46,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:33:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:46,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:33:46,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:46,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676576362] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:33:46,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:33:46,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 09:33:46,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813817863] [2023-08-30 09:33:46,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:33:46,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:33:46,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:33:46,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:33:46,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:33:46,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-08-30 09:33:46,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 97 flow. Second operand has 7 states, 7 states have (on average 217.42857142857142) internal successors, (1522), 7 states have internal predecessors, (1522), 0 states have call successors, (0), 0 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 09:33:46,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:33:46,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-08-30 09:33:46,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:33:46,659 INFO L130 PetriNetUnfolder]: 1999/3086 cut-off events. [2023-08-30 09:33:46,660 INFO L131 PetriNetUnfolder]: For 594/600 co-relation queries the response was YES. [2023-08-30 09:33:46,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7441 conditions, 3086 events. 1999/3086 cut-off events. For 594/600 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15329 event pairs, 357 based on Foata normal form. 78/2208 useless extension candidates. Maximal degree in co-relation 7434. Up to 698 conditions per place. [2023-08-30 09:33:46,673 INFO L137 encePairwiseOnDemand]: 491/497 looper letters, 122 selfloop transitions, 14 changer transitions 0/138 dead transitions. [2023-08-30 09:33:46,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 138 transitions, 692 flow [2023-08-30 09:33:46,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:33:46,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:33:46,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1642 transitions. [2023-08-30 09:33:46,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4719747053751078 [2023-08-30 09:33:46,678 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1642 transitions. [2023-08-30 09:33:46,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1642 transitions. [2023-08-30 09:33:46,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:33:46,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1642 transitions. [2023-08-30 09:33:46,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 234.57142857142858) internal successors, (1642), 7 states have internal predecessors, (1642), 0 states have call successors, (0), 0 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 09:33:46,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 497.0) internal successors, (3976), 8 states have internal predecessors, (3976), 0 states have call successors, (0), 0 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 09:33:46,690 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 497.0) internal successors, (3976), 8 states have internal predecessors, (3976), 0 states have call successors, (0), 0 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 09:33:46,690 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 97 flow. Second operand 7 states and 1642 transitions. [2023-08-30 09:33:46,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 138 transitions, 692 flow [2023-08-30 09:33:46,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 138 transitions, 680 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:33:46,693 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 215 flow [2023-08-30 09:33:46,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=215, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-30 09:33:46,694 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2023-08-30 09:33:46,695 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 215 flow [2023-08-30 09:33:46,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 217.42857142857142) internal successors, (1522), 7 states have internal predecessors, (1522), 0 states have call successors, (0), 0 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 09:33:46,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:33:46,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 09:33:46,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 09:33:46,904 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 09:33:46,904 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:33:46,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:33:46,905 INFO L85 PathProgramCache]: Analyzing trace with hash -32081365, now seen corresponding path program 1 times [2023-08-30 09:33:46,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:33:46,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478238293] [2023-08-30 09:33:46,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:33:46,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:33:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:33:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:47,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:33:47,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478238293] [2023-08-30 09:33:47,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478238293] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:33:47,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075966278] [2023-08-30 09:33:47,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:33:47,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:33:47,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:33:47,033 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 09:33:47,035 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 09:33:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:33:47,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 09:33:47,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:33:47,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:47,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:33:47,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075966278] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:33:47,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:33:47,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 09:33:47,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486814671] [2023-08-30 09:33:47,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:33:47,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 09:33:47,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:33:47,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 09:33:47,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:33:47,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-08-30 09:33:47,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 215 flow. Second operand has 4 states, 4 states have (on average 216.5) internal successors, (866), 4 states have internal predecessors, (866), 0 states have call successors, (0), 0 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 09:33:47,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:33:47,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-08-30 09:33:47,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:33:47,341 INFO L130 PetriNetUnfolder]: 1603/2520 cut-off events. [2023-08-30 09:33:47,341 INFO L131 PetriNetUnfolder]: For 1349/1361 co-relation queries the response was YES. [2023-08-30 09:33:47,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6453 conditions, 2520 events. 1603/2520 cut-off events. For 1349/1361 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12541 event pairs, 357 based on Foata normal form. 256/2110 useless extension candidates. Maximal degree in co-relation 6442. Up to 1750 conditions per place. [2023-08-30 09:33:47,350 INFO L137 encePairwiseOnDemand]: 493/497 looper letters, 47 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-08-30 09:33:47,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 284 flow [2023-08-30 09:33:47,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:33:47,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:33:47,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 905 transitions. [2023-08-30 09:33:47,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4552313883299799 [2023-08-30 09:33:47,353 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 905 transitions. [2023-08-30 09:33:47,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 905 transitions. [2023-08-30 09:33:47,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:33:47,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 905 transitions. [2023-08-30 09:33:47,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 226.25) internal successors, (905), 4 states have internal predecessors, (905), 0 states have call successors, (0), 0 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 09:33:47,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:33:47,358 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:33:47,358 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 215 flow. Second operand 4 states and 905 transitions. [2023-08-30 09:33:47,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 284 flow [2023-08-30 09:33:47,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 272 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 09:33:47,364 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 125 flow [2023-08-30 09:33:47,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=125, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2023-08-30 09:33:47,365 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2023-08-30 09:33:47,365 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 125 flow [2023-08-30 09:33:47,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 216.5) internal successors, (866), 4 states have internal predecessors, (866), 0 states have call successors, (0), 0 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 09:33:47,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:33:47,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:33:47,373 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 09:33:47,570 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 09:33:47,570 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:33:47,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:33:47,571 INFO L85 PathProgramCache]: Analyzing trace with hash -927912851, now seen corresponding path program 1 times [2023-08-30 09:33:47,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:33:47,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199556620] [2023-08-30 09:33:47,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:33:47,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:33:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:33:47,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:47,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:33:47,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199556620] [2023-08-30 09:33:47,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199556620] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:33:47,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570050985] [2023-08-30 09:33:47,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:33:47,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:33:47,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:33:47,669 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 09:33:47,671 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 09:33:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:33:47,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 09:33:47,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:33:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:47,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:33:47,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:47,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570050985] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:33:47,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:33:47,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 09:33:47,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348449861] [2023-08-30 09:33:47,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:33:47,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:33:47,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:33:47,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:33:47,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:33:47,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 497 [2023-08-30 09:33:47,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 125 flow. Second operand has 7 states, 7 states have (on average 218.71428571428572) internal successors, (1531), 7 states have internal predecessors, (1531), 0 states have call successors, (0), 0 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 09:33:47,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:33:47,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 497 [2023-08-30 09:33:47,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:33:48,244 INFO L130 PetriNetUnfolder]: 3461/5866 cut-off events. [2023-08-30 09:33:48,244 INFO L131 PetriNetUnfolder]: For 2829/2829 co-relation queries the response was YES. [2023-08-30 09:33:48,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13737 conditions, 5866 events. 3461/5866 cut-off events. For 2829/2829 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 38485 event pairs, 613 based on Foata normal form. 0/4375 useless extension candidates. Maximal degree in co-relation 13726. Up to 1353 conditions per place. [2023-08-30 09:33:48,273 INFO L137 encePairwiseOnDemand]: 493/497 looper letters, 117 selfloop transitions, 9 changer transitions 0/129 dead transitions. [2023-08-30 09:33:48,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 129 transitions, 758 flow [2023-08-30 09:33:48,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:33:48,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:33:48,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1618 transitions. [2023-08-30 09:33:48,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46507617131359585 [2023-08-30 09:33:48,278 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1618 transitions. [2023-08-30 09:33:48,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1618 transitions. [2023-08-30 09:33:48,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:33:48,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1618 transitions. [2023-08-30 09:33:48,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 231.14285714285714) internal successors, (1618), 7 states have internal predecessors, (1618), 0 states have call successors, (0), 0 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 09:33:48,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 497.0) internal successors, (3976), 8 states have internal predecessors, (3976), 0 states have call successors, (0), 0 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 09:33:48,288 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 497.0) internal successors, (3976), 8 states have internal predecessors, (3976), 0 states have call successors, (0), 0 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 09:33:48,288 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 125 flow. Second operand 7 states and 1618 transitions. [2023-08-30 09:33:48,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 129 transitions, 758 flow [2023-08-30 09:33:48,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 129 transitions, 750 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:33:48,292 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 181 flow [2023-08-30 09:33:48,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=181, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2023-08-30 09:33:48,293 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2023-08-30 09:33:48,293 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 181 flow [2023-08-30 09:33:48,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 218.71428571428572) internal successors, (1531), 7 states have internal predecessors, (1531), 0 states have call successors, (0), 0 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 09:33:48,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:33:48,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:33:48,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 09:33:48,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:33:48,500 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:33:48,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:33:48,500 INFO L85 PathProgramCache]: Analyzing trace with hash -927912853, now seen corresponding path program 1 times [2023-08-30 09:33:48,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:33:48,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925740429] [2023-08-30 09:33:48,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:33:48,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:33:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:33:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:48,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:33:48,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925740429] [2023-08-30 09:33:48,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925740429] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:33:48,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116153543] [2023-08-30 09:33:48,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:33:48,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:33:48,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:33:48,602 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 09:33:48,653 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 09:33:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:33:48,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 09:33:48,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:33:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:48,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:33:48,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116153543] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:33:48,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:33:48,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 09:33:48,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839219398] [2023-08-30 09:33:48,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:33:48,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 09:33:48,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:33:48,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 09:33:48,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:33:48,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 497 [2023-08-30 09:33:48,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 218.75) internal successors, (875), 4 states have internal predecessors, (875), 0 states have call successors, (0), 0 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 09:33:48,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:33:48,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 497 [2023-08-30 09:33:48,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:33:49,286 INFO L130 PetriNetUnfolder]: 3132/5468 cut-off events. [2023-08-30 09:33:49,286 INFO L131 PetriNetUnfolder]: For 2736/2736 co-relation queries the response was YES. [2023-08-30 09:33:49,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13429 conditions, 5468 events. 3132/5468 cut-off events. For 2736/2736 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 36950 event pairs, 90 based on Foata normal form. 138/4479 useless extension candidates. Maximal degree in co-relation 13415. Up to 3616 conditions per place. [2023-08-30 09:33:49,312 INFO L137 encePairwiseOnDemand]: 494/497 looper letters, 63 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-30 09:33:49,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 68 transitions, 420 flow [2023-08-30 09:33:49,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:33:49,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:33:49,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 916 transitions. [2023-08-30 09:33:49,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607645875251509 [2023-08-30 09:33:49,316 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 916 transitions. [2023-08-30 09:33:49,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 916 transitions. [2023-08-30 09:33:49,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:33:49,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 916 transitions. [2023-08-30 09:33:49,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 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 09:33:49,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:33:49,322 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:33:49,322 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 181 flow. Second operand 4 states and 916 transitions. [2023-08-30 09:33:49,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 68 transitions, 420 flow [2023-08-30 09:33:49,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 412 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 09:33:49,331 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 150 flow [2023-08-30 09:33:49,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2023-08-30 09:33:49,332 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2023-08-30 09:33:49,332 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 150 flow [2023-08-30 09:33:49,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 218.75) internal successors, (875), 4 states have internal predecessors, (875), 0 states have call successors, (0), 0 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 09:33:49,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:33:49,333 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 09:33:49,341 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 09:33:49,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:33:49,540 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:33:49,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:33:49,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2044599295, now seen corresponding path program 2 times [2023-08-30 09:33:49,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:33:49,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809758982] [2023-08-30 09:33:49,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:33:49,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:33:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:33:49,628 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:49,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:33:49,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809758982] [2023-08-30 09:33:49,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809758982] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:33:49,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179034384] [2023-08-30 09:33:49,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 09:33:49,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:33:49,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:33:49,630 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 09:33:49,632 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 09:33:49,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 09:33:49,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:33:49,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 09:33:49,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:33:49,744 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:49,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:33:49,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:49,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179034384] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:33:49,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:33:49,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 09:33:49,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059006867] [2023-08-30 09:33:49,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:33:49,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 09:33:49,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:33:49,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 09:33:49,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 09:33:49,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-08-30 09:33:49,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 150 flow. Second operand has 13 states, 13 states have (on average 216.76923076923077) internal successors, (2818), 13 states have internal predecessors, (2818), 0 states have call successors, (0), 0 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 09:33:49,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:33:49,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-08-30 09:33:49,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:33:50,581 INFO L130 PetriNetUnfolder]: 6269/9613 cut-off events. [2023-08-30 09:33:50,582 INFO L131 PetriNetUnfolder]: For 9326/9356 co-relation queries the response was YES. [2023-08-30 09:33:50,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24565 conditions, 9613 events. 6269/9613 cut-off events. For 9326/9356 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 53907 event pairs, 731 based on Foata normal form. 774/8143 useless extension candidates. Maximal degree in co-relation 24550. Up to 1617 conditions per place. [2023-08-30 09:33:50,617 INFO L137 encePairwiseOnDemand]: 493/497 looper letters, 237 selfloop transitions, 11 changer transitions 0/250 dead transitions. [2023-08-30 09:33:50,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 250 transitions, 1492 flow [2023-08-30 09:33:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 09:33:50,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 09:33:50,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2795 transitions. [2023-08-30 09:33:50,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4686452045606975 [2023-08-30 09:33:50,622 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2795 transitions. [2023-08-30 09:33:50,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2795 transitions. [2023-08-30 09:33:50,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:33:50,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2795 transitions. [2023-08-30 09:33:50,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 232.91666666666666) internal successors, (2795), 12 states have internal predecessors, (2795), 0 states have call successors, (0), 0 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 09:33:50,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 497.0) internal successors, (6461), 13 states have internal predecessors, (6461), 0 states have call successors, (0), 0 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 09:33:50,633 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 497.0) internal successors, (6461), 13 states have internal predecessors, (6461), 0 states have call successors, (0), 0 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 09:33:50,633 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 150 flow. Second operand 12 states and 2795 transitions. [2023-08-30 09:33:50,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 250 transitions, 1492 flow [2023-08-30 09:33:50,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 250 transitions, 1459 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:33:50,642 INFO L231 Difference]: Finished difference. Result has 66 places, 40 transitions, 243 flow [2023-08-30 09:33:50,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=243, PETRI_PLACES=66, PETRI_TRANSITIONS=40} [2023-08-30 09:33:50,643 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 27 predicate places. [2023-08-30 09:33:50,643 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 40 transitions, 243 flow [2023-08-30 09:33:50,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 216.76923076923077) internal successors, (2818), 13 states have internal predecessors, (2818), 0 states have call successors, (0), 0 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 09:33:50,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:33:50,645 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 09:33:50,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 09:33:50,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:33:50,849 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:33:50,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:33:50,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1040860717, now seen corresponding path program 2 times [2023-08-30 09:33:50,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:33:50,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16809062] [2023-08-30 09:33:50,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:33:50,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:33:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:33:50,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:50,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:33:50,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16809062] [2023-08-30 09:33:50,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16809062] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:33:50,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131543035] [2023-08-30 09:33:50,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 09:33:50,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:33:50,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:33:50,975 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 09:33:50,977 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 09:33:51,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 09:33:51,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:33:51,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 09:33:51,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:33:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:51,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:33:51,161 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:51,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131543035] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:33:51,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:33:51,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 09:33:51,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145042066] [2023-08-30 09:33:51,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:33:51,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 09:33:51,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:33:51,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 09:33:51,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 09:33:51,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 497 [2023-08-30 09:33:51,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 40 transitions, 243 flow. Second operand has 13 states, 13 states have (on average 218.3846153846154) internal successors, (2839), 13 states have internal predecessors, (2839), 0 states have call successors, (0), 0 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 09:33:51,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:33:51,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 497 [2023-08-30 09:33:51,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:33:52,679 INFO L130 PetriNetUnfolder]: 12828/22274 cut-off events. [2023-08-30 09:33:52,680 INFO L131 PetriNetUnfolder]: For 32740/32740 co-relation queries the response was YES. [2023-08-30 09:33:52,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56154 conditions, 22274 events. 12828/22274 cut-off events. For 32740/32740 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 172441 event pairs, 1213 based on Foata normal form. 810/18375 useless extension candidates. Maximal degree in co-relation 56133. Up to 3276 conditions per place. [2023-08-30 09:33:52,754 INFO L137 encePairwiseOnDemand]: 494/497 looper letters, 282 selfloop transitions, 11 changer transitions 0/296 dead transitions. [2023-08-30 09:33:52,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 296 transitions, 2405 flow [2023-08-30 09:33:52,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 09:33:52,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 09:33:52,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2782 transitions. [2023-08-30 09:33:52,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4664654594232059 [2023-08-30 09:33:52,759 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2782 transitions. [2023-08-30 09:33:52,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2782 transitions. [2023-08-30 09:33:52,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:33:52,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2782 transitions. [2023-08-30 09:33:52,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 231.83333333333334) internal successors, (2782), 12 states have internal predecessors, (2782), 0 states have call successors, (0), 0 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 09:33:52,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 497.0) internal successors, (6461), 13 states have internal predecessors, (6461), 0 states have call successors, (0), 0 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 09:33:52,769 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 497.0) internal successors, (6461), 13 states have internal predecessors, (6461), 0 states have call successors, (0), 0 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 09:33:52,769 INFO L175 Difference]: Start difference. First operand has 66 places, 40 transitions, 243 flow. Second operand 12 states and 2782 transitions. [2023-08-30 09:33:52,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 296 transitions, 2405 flow [2023-08-30 09:33:52,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 296 transitions, 2029 flow, removed 143 selfloop flow, removed 5 redundant places. [2023-08-30 09:33:52,795 INFO L231 Difference]: Finished difference. Result has 78 places, 46 transitions, 291 flow [2023-08-30 09:33:52,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=291, PETRI_PLACES=78, PETRI_TRANSITIONS=46} [2023-08-30 09:33:52,796 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 39 predicate places. [2023-08-30 09:33:52,796 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 46 transitions, 291 flow [2023-08-30 09:33:52,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 218.3846153846154) internal successors, (2839), 13 states have internal predecessors, (2839), 0 states have call successors, (0), 0 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 09:33:52,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:33:52,797 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1] [2023-08-30 09:33:52,802 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 09:33:53,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:33:53,004 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:33:53,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:33:53,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1915454241, now seen corresponding path program 3 times [2023-08-30 09:33:53,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:33:53,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309095191] [2023-08-30 09:33:53,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:33:53,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:33:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:33:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:53,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:33:53,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309095191] [2023-08-30 09:33:53,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309095191] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:33:53,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272217201] [2023-08-30 09:33:53,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 09:33:53,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:33:53,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:33:53,166 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 09:33:53,168 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 09:33:53,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 09:33:53,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:33:53,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 09:33:53,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:33:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:53,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:33:53,450 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:53,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272217201] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:33:53,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:33:53,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-08-30 09:33:53,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455830085] [2023-08-30 09:33:53,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:33:53,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 09:33:53,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:33:53,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 09:33:53,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-30 09:33:53,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-08-30 09:33:53,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 46 transitions, 291 flow. Second operand has 25 states, 25 states have (on average 216.4) internal successors, (5410), 25 states have internal predecessors, (5410), 0 states have call successors, (0), 0 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 09:33:53,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:33:53,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-08-30 09:33:53,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:33:56,598 INFO L130 PetriNetUnfolder]: 25673/38785 cut-off events. [2023-08-30 09:33:56,598 INFO L131 PetriNetUnfolder]: For 187396/187462 co-relation queries the response was YES. [2023-08-30 09:33:56,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104704 conditions, 38785 events. 25673/38785 cut-off events. For 187396/187462 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 241376 event pairs, 1541 based on Foata normal form. 3210/32605 useless extension candidates. Maximal degree in co-relation 104677. Up to 6693 conditions per place. [2023-08-30 09:33:56,864 INFO L137 encePairwiseOnDemand]: 493/497 looper letters, 627 selfloop transitions, 23 changer transitions 0/652 dead transitions. [2023-08-30 09:33:56,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 652 transitions, 5227 flow [2023-08-30 09:33:56,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 09:33:56,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 09:33:56,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5603 transitions. [2023-08-30 09:33:56,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46973507712944335 [2023-08-30 09:33:56,873 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5603 transitions. [2023-08-30 09:33:56,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5603 transitions. [2023-08-30 09:33:56,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:33:56,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5603 transitions. [2023-08-30 09:33:56,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 233.45833333333334) internal successors, (5603), 24 states have internal predecessors, (5603), 0 states have call successors, (0), 0 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 09:33:56,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 497.0) internal successors, (12425), 25 states have internal predecessors, (12425), 0 states have call successors, (0), 0 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 09:33:56,894 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 497.0) internal successors, (12425), 25 states have internal predecessors, (12425), 0 states have call successors, (0), 0 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 09:33:56,895 INFO L175 Difference]: Start difference. First operand has 78 places, 46 transitions, 291 flow. Second operand 24 states and 5603 transitions. [2023-08-30 09:33:56,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 652 transitions, 5227 flow [2023-08-30 09:33:56,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 652 transitions, 4399 flow, removed 299 selfloop flow, removed 5 redundant places. [2023-08-30 09:33:56,954 INFO L231 Difference]: Finished difference. Result has 108 places, 58 transitions, 447 flow [2023-08-30 09:33:56,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=447, PETRI_PLACES=108, PETRI_TRANSITIONS=58} [2023-08-30 09:33:56,955 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 69 predicate places. [2023-08-30 09:33:56,955 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 58 transitions, 447 flow [2023-08-30 09:33:56,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 216.4) internal successors, (5410), 25 states have internal predecessors, (5410), 0 states have call successors, (0), 0 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 09:33:56,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:33:56,956 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2023-08-30 09:33:56,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 09:33:57,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:33:57,168 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:33:57,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:33:57,168 INFO L85 PathProgramCache]: Analyzing trace with hash 723178387, now seen corresponding path program 3 times [2023-08-30 09:33:57,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:33:57,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086006754] [2023-08-30 09:33:57,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:33:57,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:33:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:33:57,328 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:57,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:33:57,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086006754] [2023-08-30 09:33:57,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086006754] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:33:57,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606962472] [2023-08-30 09:33:57,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 09:33:57,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:33:57,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:33:57,330 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:33:57,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 09:33:57,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 09:33:57,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:33:57,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 09:33:57,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:33:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:57,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:33:57,606 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:33:57,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606962472] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:33:57,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:33:57,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-30 09:33:57,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576750753] [2023-08-30 09:33:57,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:33:57,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 09:33:57,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:33:57,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 09:33:57,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-30 09:33:57,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 497 [2023-08-30 09:33:57,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 58 transitions, 447 flow. Second operand has 25 states, 25 states have (on average 218.2) internal successors, (5455), 25 states have internal predecessors, (5455), 0 states have call successors, (0), 0 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 09:33:57,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:33:57,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 497 [2023-08-30 09:33:57,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:34:05,015 INFO L130 PetriNetUnfolder]: 51876/89798 cut-off events. [2023-08-30 09:34:05,015 INFO L131 PetriNetUnfolder]: For 337063/337063 co-relation queries the response was YES. [2023-08-30 09:34:05,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228240 conditions, 89798 events. 51876/89798 cut-off events. For 337063/337063 co-relation queries the response was YES. Maximal size of possible extension queue 1499. Compared 773745 event pairs, 2413 based on Foata normal form. 3204/73785 useless extension candidates. Maximal degree in co-relation 228201. Up to 13464 conditions per place. [2023-08-30 09:34:05,760 INFO L137 encePairwiseOnDemand]: 494/497 looper letters, 858 selfloop transitions, 23 changer transitions 0/884 dead transitions. [2023-08-30 09:34:05,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 884 transitions, 8573 flow [2023-08-30 09:34:05,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 09:34:05,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 09:34:05,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5572 transitions. [2023-08-30 09:34:05,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671361502347418 [2023-08-30 09:34:05,768 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5572 transitions. [2023-08-30 09:34:05,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5572 transitions. [2023-08-30 09:34:05,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:34:05,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5572 transitions. [2023-08-30 09:34:05,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 232.16666666666666) internal successors, (5572), 24 states have internal predecessors, (5572), 0 states have call successors, (0), 0 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 09:34:05,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 497.0) internal successors, (12425), 25 states have internal predecessors, (12425), 0 states have call successors, (0), 0 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 09:34:05,785 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 497.0) internal successors, (12425), 25 states have internal predecessors, (12425), 0 states have call successors, (0), 0 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 09:34:05,785 INFO L175 Difference]: Start difference. First operand has 108 places, 58 transitions, 447 flow. Second operand 24 states and 5572 transitions. [2023-08-30 09:34:05,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 884 transitions, 8573 flow [2023-08-30 09:34:06,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 884 transitions, 6961 flow, removed 575 selfloop flow, removed 11 redundant places. [2023-08-30 09:34:06,022 INFO L231 Difference]: Finished difference. Result has 132 places, 70 transitions, 543 flow [2023-08-30 09:34:06,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=543, PETRI_PLACES=132, PETRI_TRANSITIONS=70} [2023-08-30 09:34:06,022 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 93 predicate places. [2023-08-30 09:34:06,022 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 70 transitions, 543 flow [2023-08-30 09:34:06,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 218.2) internal successors, (5455), 25 states have internal predecessors, (5455), 0 states have call successors, (0), 0 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 09:34:06,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:34:06,023 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1] [2023-08-30 09:34:06,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 09:34:06,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 09:34:06,231 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:34:06,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:34:06,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1727871329, now seen corresponding path program 4 times [2023-08-30 09:34:06,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:34:06,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979674679] [2023-08-30 09:34:06,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:34:06,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:34:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:34:06,742 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:34:06,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:34:06,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979674679] [2023-08-30 09:34:06,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979674679] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:34:06,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727253471] [2023-08-30 09:34:06,743 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 09:34:06,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:34:06,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:34:06,744 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:34:06,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 09:34:06,848 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 09:34:06,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:34:06,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 09:34:06,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:34:06,897 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:34:06,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:34:07,486 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:34:07,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727253471] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:34:07,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:34:07,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2023-08-30 09:34:07,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444847841] [2023-08-30 09:34:07,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:34:07,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-30 09:34:07,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:34:07,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-30 09:34:07,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-30 09:34:07,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-08-30 09:34:07,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 70 transitions, 543 flow. Second operand has 49 states, 49 states have (on average 216.20408163265307) internal successors, (10594), 49 states have internal predecessors, (10594), 0 states have call successors, (0), 0 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 09:34:07,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:34:07,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-08-30 09:34:07,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:34:24,577 INFO L130 PetriNetUnfolder]: 103793/155449 cut-off events. [2023-08-30 09:34:24,577 INFO L131 PetriNetUnfolder]: For 3300832/3300970 co-relation queries the response was YES. [2023-08-30 09:34:26,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422662 conditions, 155449 events. 103793/155449 cut-off events. For 3300832/3300970 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 1060582 event pairs, 3161 based on Foata normal form. 13050/130129 useless extension candidates. Maximal degree in co-relation 422611. Up to 27213 conditions per place. [2023-08-30 09:34:26,425 INFO L137 encePairwiseOnDemand]: 493/497 looper letters, 1839 selfloop transitions, 47 changer transitions 0/1888 dead transitions. [2023-08-30 09:34:26,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 1888 transitions, 17983 flow [2023-08-30 09:34:26,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-30 09:34:26,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-30 09:34:26,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 11219 transitions. [2023-08-30 09:34:26,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47028001341381626 [2023-08-30 09:34:26,439 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 11219 transitions. [2023-08-30 09:34:26,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 11219 transitions. [2023-08-30 09:34:26,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:34:26,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 11219 transitions. [2023-08-30 09:34:26,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 233.72916666666666) internal successors, (11219), 48 states have internal predecessors, (11219), 0 states have call successors, (0), 0 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 09:34:26,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 497.0) internal successors, (24353), 49 states have internal predecessors, (24353), 0 states have call successors, (0), 0 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 09:34:26,477 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 497.0) internal successors, (24353), 49 states have internal predecessors, (24353), 0 states have call successors, (0), 0 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 09:34:26,477 INFO L175 Difference]: Start difference. First operand has 132 places, 70 transitions, 543 flow. Second operand 48 states and 11219 transitions. [2023-08-30 09:34:26,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 1888 transitions, 17983 flow [2023-08-30 09:34:27,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 1888 transitions, 14599 flow, removed 1175 selfloop flow, removed 11 redundant places. [2023-08-30 09:34:27,413 INFO L231 Difference]: Finished difference. Result has 192 places, 94 transitions, 855 flow [2023-08-30 09:34:27,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=855, PETRI_PLACES=192, PETRI_TRANSITIONS=94} [2023-08-30 09:34:27,414 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 153 predicate places. [2023-08-30 09:34:27,414 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 94 transitions, 855 flow [2023-08-30 09:34:27,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 216.20408163265307) internal successors, (10594), 49 states have internal predecessors, (10594), 0 states have call successors, (0), 0 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 09:34:27,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:34:27,416 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1] [2023-08-30 09:34:27,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 09:34:27,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-30 09:34:27,617 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:34:27,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:34:27,617 INFO L85 PathProgramCache]: Analyzing trace with hash 344069907, now seen corresponding path program 4 times [2023-08-30 09:34:27,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:34:27,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75807568] [2023-08-30 09:34:27,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:34:27,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:34:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:34:28,071 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:34:28,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:34:28,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75807568] [2023-08-30 09:34:28,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75807568] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:34:28,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546952051] [2023-08-30 09:34:28,071 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 09:34:28,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:34:28,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:34:28,072 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:34:28,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 09:34:28,206 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 09:34:28,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:34:28,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 09:34:28,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:34:28,245 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:34:28,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:34:28,756 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:34:28,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546952051] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:34:28,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:34:28,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-08-30 09:34:28,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149876558] [2023-08-30 09:34:28,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:34:28,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-30 09:34:28,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:34:28,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-30 09:34:28,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-30 09:34:28,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 497 [2023-08-30 09:34:28,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 94 transitions, 855 flow. Second operand has 49 states, 49 states have (on average 218.10204081632654) internal successors, (10687), 49 states have internal predecessors, (10687), 0 states have call successors, (0), 0 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 09:34:28,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:34:28,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 497 [2023-08-30 09:34:28,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:35:17,186 INFO L130 PetriNetUnfolder]: 208596/360494 cut-off events. [2023-08-30 09:35:17,186 INFO L131 PetriNetUnfolder]: For 4360885/4360885 co-relation queries the response was YES. [2023-08-30 09:35:24,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 920172 conditions, 360494 events. 208596/360494 cut-off events. For 4360885/4360885 co-relation queries the response was YES. Maximal size of possible extension queue 3083. Compared 3407078 event pairs, 4813 based on Foata normal form. 12744/295629 useless extension candidates. Maximal degree in co-relation 920097. Up to 54576 conditions per place. [2023-08-30 09:35:26,097 INFO L137 encePairwiseOnDemand]: 494/497 looper letters, 2874 selfloop transitions, 47 changer transitions 0/2924 dead transitions. [2023-08-30 09:35:26,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 2924 transitions, 32141 flow [2023-08-30 09:35:26,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-30 09:35:26,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-30 09:35:26,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 11152 transitions. [2023-08-30 09:35:26,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4674714956405097 [2023-08-30 09:35:26,112 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 11152 transitions. [2023-08-30 09:35:26,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 11152 transitions. [2023-08-30 09:35:26,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:35:26,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 11152 transitions. [2023-08-30 09:35:26,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 232.33333333333334) internal successors, (11152), 48 states have internal predecessors, (11152), 0 states have call successors, (0), 0 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 09:35:26,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 497.0) internal successors, (24353), 49 states have internal predecessors, (24353), 0 states have call successors, (0), 0 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 09:35:26,164 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 497.0) internal successors, (24353), 49 states have internal predecessors, (24353), 0 states have call successors, (0), 0 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 09:35:26,164 INFO L175 Difference]: Start difference. First operand has 192 places, 94 transitions, 855 flow. Second operand 48 states and 11152 transitions. [2023-08-30 09:35:26,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 2924 transitions, 32141 flow [2023-08-30 09:35:29,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 2924 transitions, 25465 flow, removed 2303 selfloop flow, removed 23 redundant places. [2023-08-30 09:35:29,450 INFO L231 Difference]: Finished difference. Result has 240 places, 118 transitions, 1047 flow [2023-08-30 09:35:29,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1047, PETRI_PLACES=240, PETRI_TRANSITIONS=118} [2023-08-30 09:35:29,474 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 201 predicate places. [2023-08-30 09:35:29,474 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 118 transitions, 1047 flow [2023-08-30 09:35:29,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 218.10204081632654) internal successors, (10687), 49 states have internal predecessors, (10687), 0 states have call successors, (0), 0 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 09:35:29,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:35:29,475 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1] [2023-08-30 09:35:29,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 09:35:29,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 09:35:29,680 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 09:35:29,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:35:29,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1504541215, now seen corresponding path program 5 times [2023-08-30 09:35:29,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:35:29,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367997010] [2023-08-30 09:35:29,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:35:29,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:35:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:35:30,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:35:30,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:35:30,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367997010] [2023-08-30 09:35:30,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367997010] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:35:30,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127723439] [2023-08-30 09:35:30,908 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 09:35:30,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:35:30,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:35:30,910 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:35:30,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 09:35:31,056 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-08-30 09:35:31,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:35:31,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-30 09:35:31,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:35:31,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:35:31,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:35:32,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:35:32,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127723439] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:35:32,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:35:32,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2023-08-30 09:35:32,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318128223] [2023-08-30 09:35:32,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:35:32,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-08-30 09:35:32,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:35:32,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-08-30 09:35:32,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2023-08-30 09:35:33,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-08-30 09:35:33,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 118 transitions, 1047 flow. Second operand has 97 states, 97 states have (on average 216.10309278350516) internal successors, (20962), 97 states have internal predecessors, (20962), 0 states have call successors, (0), 0 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 09:35:33,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:35:33,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-08-30 09:35:33,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand