./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 BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/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 BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 06:08:50,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:08:50,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:08:50,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:08:50,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:08:50,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:08:50,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:08:50,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:08:50,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:08:50,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:08:50,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:08:50,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:08:50,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:08:50,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:08:50,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:08:50,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:08:50,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:08:50,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:08:50,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:08:50,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:08:50,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:08:50,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:08:50,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:08:50,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:08:50,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:08:50,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:08:50,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:08:50,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:08:50,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:08:50,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:08:50,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:08:50,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:08:50,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:08:50,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:08:50,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:08:50,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:08:50,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:08:50,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:08:50,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:08:50,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:08:50,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:08:50,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:08:50,245 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:08:50,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:08:50,247 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:08:50,247 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:08:50,248 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:08:50,248 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:08:50,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:08:50,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:08:50,249 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:08:50,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:08:50,250 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:08:50,250 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:08:50,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:08:50,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:08:50,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:08:50,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:08:50,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:08:50,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:08:50,252 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:08:50,252 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:08:50,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:08:50,252 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:08:50,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:08:50,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:08:50,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:08:50,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:08:50,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:08:50,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:08:50,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:08:50,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:08:50,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:08:50,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:08:50,255 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:08:50,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:08:50,255 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:08:50,255 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:08:50,255 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:08:50,256 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:08:50,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:08:50,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:08:50,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:08:50,571 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:08:50,572 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:08:50,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_36-trylock_nr.i [2023-09-01 06:08:51,730 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:08:52,140 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:08:52,141 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_36-trylock_nr.i [2023-09-01 06:08:52,168 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c181d2eee/1565501a3fd94542a70d2b26bc6cce08/FLAG3e76ee62b [2023-09-01 06:08:52,188 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c181d2eee/1565501a3fd94542a70d2b26bc6cce08 [2023-09-01 06:08:52,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:08:52,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:08:52,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:08:52,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:08:52,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:08:52,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:08:52" (1/1) ... [2023-09-01 06:08:52,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1354701b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:08:52, skipping insertion in model container [2023-09-01 06:08:52,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:08:52" (1/1) ... [2023-09-01 06:08:52,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:08:52,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:08:53,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:08:53,181 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:08:53,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:08:53,352 WARN L667 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 06:08:53,352 WARN L667 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 06:08:53,352 WARN L667 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 06:08:53,353 WARN L667 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 06:08:53,359 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:08:53,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:08:53 WrapperNode [2023-09-01 06:08:53,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:08:53,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:08:53,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:08:53,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:08:53,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:08:53" (1/1) ... [2023-09-01 06:08:53,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:08:53" (1/1) ... [2023-09-01 06:08:53,422 INFO L138 Inliner]: procedures = 524, calls = 69, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 133 [2023-09-01 06:08:53,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:08:53,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:08:53,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:08:53,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:08:53,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:08:53" (1/1) ... [2023-09-01 06:08:53,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:08:53" (1/1) ... [2023-09-01 06:08:53,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:08:53" (1/1) ... [2023-09-01 06:08:53,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:08:53" (1/1) ... [2023-09-01 06:08:53,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:08:53" (1/1) ... [2023-09-01 06:08:53,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:08:53" (1/1) ... [2023-09-01 06:08:53,457 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:08:53" (1/1) ... [2023-09-01 06:08:53,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:08:53" (1/1) ... [2023-09-01 06:08:53,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:08:53,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:08:53,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:08:53,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:08:53,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:08:53" (1/1) ... [2023-09-01 06:08:53,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:08:53,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:08:53,514 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 06:08:53,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 06:08:53,556 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2023-09-01 06:08:53,556 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2023-09-01 06:08:53,557 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-09-01 06:08:53,557 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2023-09-01 06:08:53,557 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2023-09-01 06:08:53,557 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-09-01 06:08:53,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:08:53,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:08:53,558 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:08:53,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:08:53,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:08:53,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:08:53,558 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-09-01 06:08:53,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:08:53,559 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-09-01 06:08:53,559 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-09-01 06:08:53,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:08:53,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:08:53,561 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 06:08:53,880 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:08:53,882 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:08:54,167 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:08:54,177 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:08:54,177 INFO L302 CfgBuilder]: Removed 19 assume(true) statements. [2023-09-01 06:08:54,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:08:54 BoogieIcfgContainer [2023-09-01 06:08:54,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:08:54,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:08:54,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:08:54,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:08:54,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:08:52" (1/3) ... [2023-09-01 06:08:54,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f04e97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:08:54, skipping insertion in model container [2023-09-01 06:08:54,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:08:53" (2/3) ... [2023-09-01 06:08:54,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f04e97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:08:54, skipping insertion in model container [2023-09-01 06:08:54,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:08:54" (3/3) ... [2023-09-01 06:08:54,194 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr.i [2023-09-01 06:08:54,202 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:08:54,211 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:08:54,212 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-09-01 06:08:54,212 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:08:54,318 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 06:08:54,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 250 transitions, 516 flow [2023-09-01 06:08:54,467 INFO L130 PetriNetUnfolder]: 32/248 cut-off events. [2023-09-01 06:08:54,468 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 06:08:54,477 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. [2023-09-01 06:08:54,478 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 250 transitions, 516 flow [2023-09-01 06:08:54,486 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 221 transitions, 451 flow [2023-09-01 06:08:54,494 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:08:54,507 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 221 transitions, 451 flow [2023-09-01 06:08:54,510 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 221 transitions, 451 flow [2023-09-01 06:08:54,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 221 transitions, 451 flow [2023-09-01 06:08:54,560 INFO L130 PetriNetUnfolder]: 28/221 cut-off events. [2023-09-01 06:08:54,560 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 06:08:54,566 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. [2023-09-01 06:08:54,573 INFO L119 LiptonReduction]: Number of co-enabled transitions 13862 [2023-09-01 06:09:05,508 INFO L134 LiptonReduction]: Checked pairs total: 14838 [2023-09-01 06:09:05,508 INFO L136 LiptonReduction]: Total number of compositions: 247 [2023-09-01 06:09:05,522 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 06:09:05,527 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;@26a3de35, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:09:05,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-09-01 06:09:05,529 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 06:09:05,529 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:09:05,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:09:05,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 06:09:05,533 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)] === [2023-09-01 06:09:05,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:09:05,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1025, now seen corresponding path program 1 times [2023-09-01 06:09:05,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:09:05,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671437195] [2023-09-01 06:09:05,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:09:05,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:09:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:09:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:05,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:09:05,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671437195] [2023-09-01 06:09:05,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671437195] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:09:05,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:09:05,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 06:09:05,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846263350] [2023-09-01 06:09:05,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:09:05,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 06:09:05,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:09:05,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 06:09:05,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 06:09:05,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 497 [2023-09-01 06:09:05,834 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) [2023-09-01 06:09:05,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:09:05,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 497 [2023-09-01 06:09:05,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:09:05,976 INFO L130 PetriNetUnfolder]: 328/595 cut-off events. [2023-09-01 06:09:05,977 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 06:09:05,978 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. [2023-09-01 06:09:05,983 INFO L137 encePairwiseOnDemand]: 484/497 looper letters, 25 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-09-01 06:09:05,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 117 flow [2023-09-01 06:09:05,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 06:09:05,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 06:09:06,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 476 transitions. [2023-09-01 06:09:06,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4788732394366197 [2023-09-01 06:09:06,005 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 476 transitions. [2023-09-01 06:09:06,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 476 transitions. [2023-09-01 06:09:06,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:09:06,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 476 transitions. [2023-09-01 06:09:06,018 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) [2023-09-01 06:09:06,023 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) [2023-09-01 06:09:06,024 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) [2023-09-01 06:09:06,026 INFO L175 Difference]: Start difference. First operand has 39 places, 50 transitions, 109 flow. Second operand 2 states and 476 transitions. [2023-09-01 06:09:06,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 117 flow [2023-09-01 06:09:06,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 06:09:06,032 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 62 flow [2023-09-01 06:09:06,034 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} [2023-09-01 06:09:06,041 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-09-01 06:09:06,042 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 62 flow [2023-09-01 06:09:06,042 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) [2023-09-01 06:09:06,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:09:06,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 06:09:06,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:09:06,045 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)] === [2023-09-01 06:09:06,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:09:06,047 INFO L85 PathProgramCache]: Analyzing trace with hash 968796351, now seen corresponding path program 1 times [2023-09-01 06:09:06,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:09:06,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536273722] [2023-09-01 06:09:06,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:09:06,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:09:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:09:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:06,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:09:06,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536273722] [2023-09-01 06:09:06,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536273722] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:09:06,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:09:06,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 06:09:06,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823620008] [2023-09-01 06:09:06,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:09:06,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:09:06,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:09:06,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:09:06,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:09:06,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-09-01 06:09:06,291 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) [2023-09-01 06:09:06,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:09:06,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-09-01 06:09:06,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:09:06,400 INFO L130 PetriNetUnfolder]: 585/918 cut-off events. [2023-09-01 06:09:06,400 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 06:09:06,401 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. [2023-09-01 06:09:06,405 INFO L137 encePairwiseOnDemand]: 490/497 looper letters, 44 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2023-09-01 06:09:06,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 49 transitions, 199 flow [2023-09-01 06:09:06,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:09:06,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:09:06,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2023-09-01 06:09:06,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46680080482897385 [2023-09-01 06:09:06,408 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2023-09-01 06:09:06,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2023-09-01 06:09:06,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:09:06,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2023-09-01 06:09:06,411 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) [2023-09-01 06:09:06,415 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) [2023-09-01 06:09:06,417 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) [2023-09-01 06:09:06,417 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 62 flow. Second operand 3 states and 696 transitions. [2023-09-01 06:09:06,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 49 transitions, 199 flow [2023-09-01 06:09:06,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 49 transitions, 199 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 06:09:06,419 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 87 flow [2023-09-01 06:09:06,419 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} [2023-09-01 06:09:06,420 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -6 predicate places. [2023-09-01 06:09:06,420 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 87 flow [2023-09-01 06:09:06,421 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) [2023-09-01 06:09:06,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:09:06,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 06:09:06,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:09:06,421 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)] === [2023-09-01 06:09:06,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:09:06,422 INFO L85 PathProgramCache]: Analyzing trace with hash -32081301, now seen corresponding path program 1 times [2023-09-01 06:09:06,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:09:06,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161231217] [2023-09-01 06:09:06,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:09:06,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:09:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:09:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:06,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:09:06,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161231217] [2023-09-01 06:09:06,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161231217] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:09:06,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:09:06,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:09:06,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083732817] [2023-09-01 06:09:06,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:09:06,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:09:06,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:09:06,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:09:06,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:09:06,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-09-01 06:09:06,513 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) [2023-09-01 06:09:06,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:09:06,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-09-01 06:09:06,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:09:06,663 INFO L130 PetriNetUnfolder]: 566/909 cut-off events. [2023-09-01 06:09:06,663 INFO L131 PetriNetUnfolder]: For 11/20 co-relation queries the response was YES. [2023-09-01 06:09:06,664 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. [2023-09-01 06:09:06,667 INFO L137 encePairwiseOnDemand]: 495/497 looper letters, 41 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-09-01 06:09:06,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 46 transitions, 199 flow [2023-09-01 06:09:06,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:09:06,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:09:06,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 687 transitions. [2023-09-01 06:09:06,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607645875251509 [2023-09-01 06:09:06,671 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 687 transitions. [2023-09-01 06:09:06,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 687 transitions. [2023-09-01 06:09:06,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:09:06,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 687 transitions. [2023-09-01 06:09:06,673 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) [2023-09-01 06:09:06,676 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) [2023-09-01 06:09:06,677 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) [2023-09-01 06:09:06,677 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 87 flow. Second operand 3 states and 687 transitions. [2023-09-01 06:09:06,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 46 transitions, 199 flow [2023-09-01 06:09:06,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 46 transitions, 197 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:09:06,679 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 83 flow [2023-09-01 06:09:06,679 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} [2023-09-01 06:09:06,680 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-09-01 06:09:06,680 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 83 flow [2023-09-01 06:09:06,680 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) [2023-09-01 06:09:06,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:09:06,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 06:09:06,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:09:06,681 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)] === [2023-09-01 06:09:06,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:09:06,682 INFO L85 PathProgramCache]: Analyzing trace with hash -29932719, now seen corresponding path program 1 times [2023-09-01 06:09:06,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:09:06,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116828] [2023-09-01 06:09:06,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:09:06,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:09:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:09:06,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:06,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:09:06,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116828] [2023-09-01 06:09:06,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116828] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:09:06,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:09:06,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:09:06,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138824873] [2023-09-01 06:09:06,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:09:06,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:09:06,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:09:06,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:09:06,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:09:06,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 497 [2023-09-01 06:09:06,805 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) [2023-09-01 06:09:06,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:09:06,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 497 [2023-09-01 06:09:06,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:09:06,982 INFO L130 PetriNetUnfolder]: 891/1562 cut-off events. [2023-09-01 06:09:06,982 INFO L131 PetriNetUnfolder]: For 185/185 co-relation queries the response was YES. [2023-09-01 06:09:06,984 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. [2023-09-01 06:09:06,991 INFO L137 encePairwiseOnDemand]: 493/497 looper letters, 42 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-09-01 06:09:06,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 48 transitions, 221 flow [2023-09-01 06:09:06,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:09:06,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:09:06,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 693 transitions. [2023-09-01 06:09:06,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4647887323943662 [2023-09-01 06:09:06,995 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 693 transitions. [2023-09-01 06:09:06,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 693 transitions. [2023-09-01 06:09:06,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:09:06,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 693 transitions. [2023-09-01 06:09:06,997 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) [2023-09-01 06:09:07,001 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) [2023-09-01 06:09:07,002 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) [2023-09-01 06:09:07,002 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 83 flow. Second operand 3 states and 693 transitions. [2023-09-01 06:09:07,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 48 transitions, 221 flow [2023-09-01 06:09:07,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 48 transitions, 221 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 06:09:07,004 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 97 flow [2023-09-01 06:09:07,004 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} [2023-09-01 06:09:07,005 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2023-09-01 06:09:07,005 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 97 flow [2023-09-01 06:09:07,006 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) [2023-09-01 06:09:07,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:09:07,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 06:09:07,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:09:07,007 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)] === [2023-09-01 06:09:07,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:09:07,007 INFO L85 PathProgramCache]: Analyzing trace with hash -32081364, now seen corresponding path program 1 times [2023-09-01 06:09:07,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:09:07,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087937646] [2023-09-01 06:09:07,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:09:07,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:09:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:09:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:07,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:09:07,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087937646] [2023-09-01 06:09:07,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087937646] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:09:07,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76143034] [2023-09-01 06:09:07,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:09:07,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:09:07,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:09:07,101 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:09:07,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 06:09:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:09:07,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 06:09:07,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:09:07,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:07,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:09:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:07,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76143034] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:09:07,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:09:07,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 06:09:07,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917926702] [2023-09-01 06:09:07,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:09:07,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 06:09:07,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:09:07,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 06:09:07,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 06:09:07,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-09-01 06:09:07,384 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) [2023-09-01 06:09:07,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:09:07,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-09-01 06:09:07,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:09:07,776 INFO L130 PetriNetUnfolder]: 1999/3086 cut-off events. [2023-09-01 06:09:07,776 INFO L131 PetriNetUnfolder]: For 594/600 co-relation queries the response was YES. [2023-09-01 06:09:07,780 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. [2023-09-01 06:09:07,795 INFO L137 encePairwiseOnDemand]: 491/497 looper letters, 122 selfloop transitions, 14 changer transitions 0/138 dead transitions. [2023-09-01 06:09:07,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 138 transitions, 692 flow [2023-09-01 06:09:07,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 06:09:07,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 06:09:07,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1642 transitions. [2023-09-01 06:09:07,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4719747053751078 [2023-09-01 06:09:07,801 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1642 transitions. [2023-09-01 06:09:07,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1642 transitions. [2023-09-01 06:09:07,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:09:07,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1642 transitions. [2023-09-01 06:09:07,806 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) [2023-09-01 06:09:07,811 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) [2023-09-01 06:09:07,813 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) [2023-09-01 06:09:07,814 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 97 flow. Second operand 7 states and 1642 transitions. [2023-09-01 06:09:07,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 138 transitions, 692 flow [2023-09-01 06:09:07,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 138 transitions, 680 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:09:07,818 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 215 flow [2023-09-01 06:09:07,818 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} [2023-09-01 06:09:07,819 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2023-09-01 06:09:07,819 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 215 flow [2023-09-01 06:09:07,820 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) [2023-09-01 06:09:07,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:09:07,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 06:09:07,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 06:09:08,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:09:08,029 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)] === [2023-09-01 06:09:08,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:09:08,029 INFO L85 PathProgramCache]: Analyzing trace with hash -32081365, now seen corresponding path program 1 times [2023-09-01 06:09:08,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:09:08,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337461104] [2023-09-01 06:09:08,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:09:08,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:09:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:09:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:08,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:09:08,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337461104] [2023-09-01 06:09:08,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337461104] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:09:08,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903063999] [2023-09-01 06:09:08,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:09:08,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:09:08,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:09:08,162 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:09:08,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 06:09:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:09:08,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 06:09:08,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:09:08,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:08,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:09:08,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903063999] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:09:08,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 06:09:08,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-09-01 06:09:08,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967561209] [2023-09-01 06:09:08,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:09:08,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 06:09:08,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:09:08,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 06:09:08,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 06:09:08,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-09-01 06:09:08,306 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) [2023-09-01 06:09:08,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:09:08,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-09-01 06:09:08,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:09:08,565 INFO L130 PetriNetUnfolder]: 1603/2520 cut-off events. [2023-09-01 06:09:08,566 INFO L131 PetriNetUnfolder]: For 1349/1361 co-relation queries the response was YES. [2023-09-01 06:09:08,570 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. [2023-09-01 06:09:08,581 INFO L137 encePairwiseOnDemand]: 493/497 looper letters, 47 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-09-01 06:09:08,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 284 flow [2023-09-01 06:09:08,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 06:09:08,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 06:09:08,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 905 transitions. [2023-09-01 06:09:08,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4552313883299799 [2023-09-01 06:09:08,584 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 905 transitions. [2023-09-01 06:09:08,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 905 transitions. [2023-09-01 06:09:08,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:09:08,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 905 transitions. [2023-09-01 06:09:08,587 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) [2023-09-01 06:09:08,590 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) [2023-09-01 06:09:08,590 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) [2023-09-01 06:09:08,590 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 215 flow. Second operand 4 states and 905 transitions. [2023-09-01 06:09:08,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 284 flow [2023-09-01 06:09:08,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 272 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-09-01 06:09:08,611 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 125 flow [2023-09-01 06:09:08,611 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} [2023-09-01 06:09:08,612 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2023-09-01 06:09:08,612 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 125 flow [2023-09-01 06:09:08,613 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) [2023-09-01 06:09:08,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:09:08,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:09:08,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 06:09:08,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-09-01 06:09:08,820 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)] === [2023-09-01 06:09:08,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:09:08,821 INFO L85 PathProgramCache]: Analyzing trace with hash -927912851, now seen corresponding path program 1 times [2023-09-01 06:09:08,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:09:08,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790485350] [2023-09-01 06:09:08,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:09:08,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:09:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:09:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:08,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:09:08,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790485350] [2023-09-01 06:09:08,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790485350] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:09:08,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595295172] [2023-09-01 06:09:08,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:09:08,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:09:08,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:09:08,907 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:09:08,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 06:09:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:09:09,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 06:09:09,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:09:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:09,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:09:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:09,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595295172] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:09:09,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:09:09,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 06:09:09,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505909794] [2023-09-01 06:09:09,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:09:09,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 06:09:09,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:09:09,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 06:09:09,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 06:09:09,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 497 [2023-09-01 06:09:09,068 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) [2023-09-01 06:09:09,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:09:09,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 497 [2023-09-01 06:09:09,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:09:09,696 INFO L130 PetriNetUnfolder]: 3461/5866 cut-off events. [2023-09-01 06:09:09,696 INFO L131 PetriNetUnfolder]: For 2829/2829 co-relation queries the response was YES. [2023-09-01 06:09:09,704 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. [2023-09-01 06:09:09,727 INFO L137 encePairwiseOnDemand]: 493/497 looper letters, 117 selfloop transitions, 9 changer transitions 0/129 dead transitions. [2023-09-01 06:09:09,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 129 transitions, 758 flow [2023-09-01 06:09:09,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 06:09:09,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 06:09:09,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1618 transitions. [2023-09-01 06:09:09,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46507617131359585 [2023-09-01 06:09:09,733 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1618 transitions. [2023-09-01 06:09:09,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1618 transitions. [2023-09-01 06:09:09,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:09:09,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1618 transitions. [2023-09-01 06:09:09,738 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) [2023-09-01 06:09:09,744 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) [2023-09-01 06:09:09,746 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) [2023-09-01 06:09:09,747 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 125 flow. Second operand 7 states and 1618 transitions. [2023-09-01 06:09:09,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 129 transitions, 758 flow [2023-09-01 06:09:09,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 129 transitions, 750 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 06:09:09,753 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 181 flow [2023-09-01 06:09:09,754 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} [2023-09-01 06:09:09,754 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2023-09-01 06:09:09,755 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 181 flow [2023-09-01 06:09:09,755 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) [2023-09-01 06:09:09,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:09:09,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:09:09,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 06:09:09,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:09:09,962 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)] === [2023-09-01 06:09:09,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:09:09,963 INFO L85 PathProgramCache]: Analyzing trace with hash -927912853, now seen corresponding path program 1 times [2023-09-01 06:09:09,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:09:09,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973844430] [2023-09-01 06:09:09,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:09:09,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:09:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:09:10,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:10,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:09:10,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973844430] [2023-09-01 06:09:10,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973844430] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:09:10,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501707786] [2023-09-01 06:09:10,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:09:10,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:09:10,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:09:10,041 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:09:10,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 06:09:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:09:10,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 06:09:10,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:09:10,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:10,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:09:10,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501707786] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:09:10,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 06:09:10,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 06:09:10,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693990998] [2023-09-01 06:09:10,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:09:10,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 06:09:10,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:09:10,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 06:09:10,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 06:09:10,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 497 [2023-09-01 06:09:10,182 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) [2023-09-01 06:09:10,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:09:10,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 497 [2023-09-01 06:09:10,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:09:10,697 INFO L130 PetriNetUnfolder]: 3132/5468 cut-off events. [2023-09-01 06:09:10,697 INFO L131 PetriNetUnfolder]: For 2736/2736 co-relation queries the response was YES. [2023-09-01 06:09:10,707 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. [2023-09-01 06:09:10,733 INFO L137 encePairwiseOnDemand]: 494/497 looper letters, 63 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-09-01 06:09:10,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 68 transitions, 420 flow [2023-09-01 06:09:10,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 06:09:10,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 06:09:10,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 916 transitions. [2023-09-01 06:09:10,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607645875251509 [2023-09-01 06:09:10,737 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 916 transitions. [2023-09-01 06:09:10,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 916 transitions. [2023-09-01 06:09:10,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:09:10,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 916 transitions. [2023-09-01 06:09:10,740 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) [2023-09-01 06:09:10,743 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) [2023-09-01 06:09:10,744 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) [2023-09-01 06:09:10,744 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 181 flow. Second operand 4 states and 916 transitions. [2023-09-01 06:09:10,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 68 transitions, 420 flow [2023-09-01 06:09:10,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 412 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 06:09:10,753 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 150 flow [2023-09-01 06:09:10,753 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} [2023-09-01 06:09:10,756 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2023-09-01 06:09:10,756 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 150 flow [2023-09-01 06:09:10,756 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) [2023-09-01 06:09:10,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:09:10,756 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-09-01 06:09:10,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 06:09:10,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:09:10,962 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)] === [2023-09-01 06:09:10,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:09:10,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2044599295, now seen corresponding path program 2 times [2023-09-01 06:09:10,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:09:10,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810631812] [2023-09-01 06:09:10,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:09:10,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:09:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:09:11,064 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:11,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:09:11,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810631812] [2023-09-01 06:09:11,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810631812] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:09:11,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619082254] [2023-09-01 06:09:11,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 06:09:11,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:09:11,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:09:11,067 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:09:11,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 06:09:11,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 06:09:11,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:09:11,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 06:09:11,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:09:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:11,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:09:11,293 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:11,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619082254] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:09:11,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:09:11,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-09-01 06:09:11,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872331207] [2023-09-01 06:09:11,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:09:11,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 06:09:11,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:09:11,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 06:09:11,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 06:09:11,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-09-01 06:09:11,341 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) [2023-09-01 06:09:11,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:09:11,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-09-01 06:09:11,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:09:12,366 INFO L130 PetriNetUnfolder]: 6269/9613 cut-off events. [2023-09-01 06:09:12,366 INFO L131 PetriNetUnfolder]: For 9326/9356 co-relation queries the response was YES. [2023-09-01 06:09:12,399 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. [2023-09-01 06:09:12,437 INFO L137 encePairwiseOnDemand]: 493/497 looper letters, 237 selfloop transitions, 11 changer transitions 0/250 dead transitions. [2023-09-01 06:09:12,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 250 transitions, 1492 flow [2023-09-01 06:09:12,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 06:09:12,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 06:09:12,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2795 transitions. [2023-09-01 06:09:12,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4686452045606975 [2023-09-01 06:09:12,457 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2795 transitions. [2023-09-01 06:09:12,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2795 transitions. [2023-09-01 06:09:12,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:09:12,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2795 transitions. [2023-09-01 06:09:12,466 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) [2023-09-01 06:09:12,475 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) [2023-09-01 06:09:12,476 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) [2023-09-01 06:09:12,476 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 150 flow. Second operand 12 states and 2795 transitions. [2023-09-01 06:09:12,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 250 transitions, 1492 flow [2023-09-01 06:09:12,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 250 transitions, 1459 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 06:09:12,490 INFO L231 Difference]: Finished difference. Result has 66 places, 40 transitions, 243 flow [2023-09-01 06:09:12,490 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} [2023-09-01 06:09:12,491 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 27 predicate places. [2023-09-01 06:09:12,491 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 40 transitions, 243 flow [2023-09-01 06:09:12,493 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) [2023-09-01 06:09:12,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:09:12,493 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-09-01 06:09:12,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 06:09:12,699 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 [2023-09-01 06:09:12,700 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)] === [2023-09-01 06:09:12,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:09:12,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1040860717, now seen corresponding path program 2 times [2023-09-01 06:09:12,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:09:12,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951368274] [2023-09-01 06:09:12,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:09:12,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:09:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:09:12,821 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:12,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:09:12,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951368274] [2023-09-01 06:09:12,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951368274] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:09:12,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012408622] [2023-09-01 06:09:12,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 06:09:12,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:09:12,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:09:12,824 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:09:12,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 06:09:12,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 06:09:12,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:09:12,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 06:09:12,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:09:12,978 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:12,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:09:13,026 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:13,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012408622] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:09:13,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:09:13,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 06:09:13,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844853527] [2023-09-01 06:09:13,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:09:13,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 06:09:13,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:09:13,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 06:09:13,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 06:09:13,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 497 [2023-09-01 06:09:13,056 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) [2023-09-01 06:09:13,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:09:13,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 497 [2023-09-01 06:09:13,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:09:14,984 INFO L130 PetriNetUnfolder]: 12828/22274 cut-off events. [2023-09-01 06:09:14,985 INFO L131 PetriNetUnfolder]: For 32740/32740 co-relation queries the response was YES. [2023-09-01 06:09:15,056 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. [2023-09-01 06:09:15,133 INFO L137 encePairwiseOnDemand]: 494/497 looper letters, 282 selfloop transitions, 11 changer transitions 0/296 dead transitions. [2023-09-01 06:09:15,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 296 transitions, 2405 flow [2023-09-01 06:09:15,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 06:09:15,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 06:09:15,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2782 transitions. [2023-09-01 06:09:15,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4664654594232059 [2023-09-01 06:09:15,142 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2782 transitions. [2023-09-01 06:09:15,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2782 transitions. [2023-09-01 06:09:15,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:09:15,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2782 transitions. [2023-09-01 06:09:15,149 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) [2023-09-01 06:09:15,156 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) [2023-09-01 06:09:15,157 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) [2023-09-01 06:09:15,158 INFO L175 Difference]: Start difference. First operand has 66 places, 40 transitions, 243 flow. Second operand 12 states and 2782 transitions. [2023-09-01 06:09:15,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 296 transitions, 2405 flow [2023-09-01 06:09:15,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 296 transitions, 2029 flow, removed 143 selfloop flow, removed 5 redundant places. [2023-09-01 06:09:15,196 INFO L231 Difference]: Finished difference. Result has 78 places, 46 transitions, 291 flow [2023-09-01 06:09:15,197 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} [2023-09-01 06:09:15,197 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 39 predicate places. [2023-09-01 06:09:15,197 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 46 transitions, 291 flow [2023-09-01 06:09:15,198 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) [2023-09-01 06:09:15,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:09:15,198 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1] [2023-09-01 06:09:15,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 06:09:15,404 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 [2023-09-01 06:09:15,405 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)] === [2023-09-01 06:09:15,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:09:15,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1915454241, now seen corresponding path program 3 times [2023-09-01 06:09:15,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:09:15,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008947757] [2023-09-01 06:09:15,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:09:15,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:09:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:09:15,778 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:15,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:09:15,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008947757] [2023-09-01 06:09:15,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008947757] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:09:15,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070810139] [2023-09-01 06:09:15,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 06:09:15,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:09:15,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:09:15,780 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:09:15,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 06:09:15,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-09-01 06:09:15,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:09:15,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 06:09:15,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:09:15,965 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:15,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:09:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:16,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070810139] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:09:16,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:09:16,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-09-01 06:09:16,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9970834] [2023-09-01 06:09:16,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:09:16,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-09-01 06:09:16,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:09:16,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-09-01 06:09:16,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-09-01 06:09:16,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-09-01 06:09:16,282 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) [2023-09-01 06:09:16,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:09:16,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-09-01 06:09:16,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:09:20,663 INFO L130 PetriNetUnfolder]: 25673/38785 cut-off events. [2023-09-01 06:09:20,663 INFO L131 PetriNetUnfolder]: For 187396/187462 co-relation queries the response was YES. [2023-09-01 06:09:20,825 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. [2023-09-01 06:09:20,970 INFO L137 encePairwiseOnDemand]: 493/497 looper letters, 627 selfloop transitions, 23 changer transitions 0/652 dead transitions. [2023-09-01 06:09:20,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 652 transitions, 5227 flow [2023-09-01 06:09:20,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-09-01 06:09:20,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-09-01 06:09:20,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5603 transitions. [2023-09-01 06:09:20,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46973507712944335 [2023-09-01 06:09:20,985 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5603 transitions. [2023-09-01 06:09:20,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5603 transitions. [2023-09-01 06:09:20,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:09:20,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5603 transitions. [2023-09-01 06:09:20,999 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) [2023-09-01 06:09:21,016 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) [2023-09-01 06:09:21,019 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) [2023-09-01 06:09:21,019 INFO L175 Difference]: Start difference. First operand has 78 places, 46 transitions, 291 flow. Second operand 24 states and 5603 transitions. [2023-09-01 06:09:21,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 652 transitions, 5227 flow [2023-09-01 06:09:21,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 652 transitions, 4399 flow, removed 299 selfloop flow, removed 5 redundant places. [2023-09-01 06:09:21,115 INFO L231 Difference]: Finished difference. Result has 108 places, 58 transitions, 447 flow [2023-09-01 06:09:21,115 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} [2023-09-01 06:09:21,115 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 69 predicate places. [2023-09-01 06:09:21,116 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 58 transitions, 447 flow [2023-09-01 06:09:21,117 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) [2023-09-01 06:09:21,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:09:21,118 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2023-09-01 06:09:21,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 06:09:21,325 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 [2023-09-01 06:09:21,326 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)] === [2023-09-01 06:09:21,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:09:21,326 INFO L85 PathProgramCache]: Analyzing trace with hash 723178387, now seen corresponding path program 3 times [2023-09-01 06:09:21,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:09:21,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594536579] [2023-09-01 06:09:21,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:09:21,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:09:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:09:21,577 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:21,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:09:21,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594536579] [2023-09-01 06:09:21,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594536579] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:09:21,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847024670] [2023-09-01 06:09:21,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 06:09:21,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:09:21,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:09:21,579 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:09:21,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 06:09:21,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-09-01 06:09:21,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:09:21,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 06:09:21,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:09:21,771 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:21,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:09:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:21,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847024670] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:09:21,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:09:21,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-09-01 06:09:21,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047283791] [2023-09-01 06:09:21,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:09:21,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-09-01 06:09:21,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:09:21,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-09-01 06:09:21,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-09-01 06:09:22,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 497 [2023-09-01 06:09:22,016 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) [2023-09-01 06:09:22,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:09:22,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 497 [2023-09-01 06:09:22,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:09:31,560 INFO L130 PetriNetUnfolder]: 51876/89798 cut-off events. [2023-09-01 06:09:31,561 INFO L131 PetriNetUnfolder]: For 337063/337063 co-relation queries the response was YES. [2023-09-01 06:09:32,160 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. [2023-09-01 06:09:32,432 INFO L137 encePairwiseOnDemand]: 494/497 looper letters, 858 selfloop transitions, 23 changer transitions 0/884 dead transitions. [2023-09-01 06:09:32,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 884 transitions, 8573 flow [2023-09-01 06:09:32,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-09-01 06:09:32,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-09-01 06:09:32,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5572 transitions. [2023-09-01 06:09:32,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671361502347418 [2023-09-01 06:09:32,451 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5572 transitions. [2023-09-01 06:09:32,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5572 transitions. [2023-09-01 06:09:32,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:09:32,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5572 transitions. [2023-09-01 06:09:32,468 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) [2023-09-01 06:09:32,485 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) [2023-09-01 06:09:32,488 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) [2023-09-01 06:09:32,489 INFO L175 Difference]: Start difference. First operand has 108 places, 58 transitions, 447 flow. Second operand 24 states and 5572 transitions. [2023-09-01 06:09:32,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 884 transitions, 8573 flow [2023-09-01 06:09:32,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 884 transitions, 6961 flow, removed 575 selfloop flow, removed 11 redundant places. [2023-09-01 06:09:32,840 INFO L231 Difference]: Finished difference. Result has 132 places, 70 transitions, 543 flow [2023-09-01 06:09:32,841 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} [2023-09-01 06:09:32,842 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 93 predicate places. [2023-09-01 06:09:32,843 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 70 transitions, 543 flow [2023-09-01 06:09:32,844 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) [2023-09-01 06:09:32,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:09:32,844 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1] [2023-09-01 06:09:32,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 06:09:33,057 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 [2023-09-01 06:09:33,058 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)] === [2023-09-01 06:09:33,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:09:33,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1727871329, now seen corresponding path program 4 times [2023-09-01 06:09:33,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:09:33,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685185631] [2023-09-01 06:09:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:09:33,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:09:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:09:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:33,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:09:33,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685185631] [2023-09-01 06:09:33,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685185631] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:09:33,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83317851] [2023-09-01 06:09:33,685 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 06:09:33,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:09:33,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:09:33,687 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:09:33,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 06:09:33,834 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 06:09:33,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:09:33,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 06:09:33,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:09:33,892 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:33,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:09:34,558 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:34,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83317851] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:09:34,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:09:34,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2023-09-01 06:09:34,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752110660] [2023-09-01 06:09:34,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:09:34,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-09-01 06:09:34,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:09:34,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-09-01 06:09:34,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-09-01 06:09:34,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-09-01 06:09:34,859 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) [2023-09-01 06:09:34,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:09:34,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-09-01 06:09:34,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:09:55,814 INFO L130 PetriNetUnfolder]: 103793/155449 cut-off events. [2023-09-01 06:09:55,815 INFO L131 PetriNetUnfolder]: For 3300832/3300970 co-relation queries the response was YES. [2023-09-01 06:09:57,318 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. [2023-09-01 06:09:58,057 INFO L137 encePairwiseOnDemand]: 493/497 looper letters, 1839 selfloop transitions, 47 changer transitions 0/1888 dead transitions. [2023-09-01 06:09:58,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 1888 transitions, 17983 flow [2023-09-01 06:09:58,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-09-01 06:09:58,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-09-01 06:09:58,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 11219 transitions. [2023-09-01 06:09:58,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47028001341381626 [2023-09-01 06:09:58,073 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 11219 transitions. [2023-09-01 06:09:58,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 11219 transitions. [2023-09-01 06:09:58,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:09:58,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 11219 transitions. [2023-09-01 06:09:58,099 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) [2023-09-01 06:09:58,128 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) [2023-09-01 06:09:58,136 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) [2023-09-01 06:09:58,136 INFO L175 Difference]: Start difference. First operand has 132 places, 70 transitions, 543 flow. Second operand 48 states and 11219 transitions. [2023-09-01 06:09:58,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 1888 transitions, 17983 flow [2023-09-01 06:09:58,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 1888 transitions, 14599 flow, removed 1175 selfloop flow, removed 11 redundant places. [2023-09-01 06:09:58,942 INFO L231 Difference]: Finished difference. Result has 192 places, 94 transitions, 855 flow [2023-09-01 06:09:58,942 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} [2023-09-01 06:09:58,943 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 153 predicate places. [2023-09-01 06:09:58,943 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 94 transitions, 855 flow [2023-09-01 06:09:58,945 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) [2023-09-01 06:09:58,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:09:58,945 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1] [2023-09-01 06:09:58,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-09-01 06:09:59,151 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 [2023-09-01 06:09:59,151 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)] === [2023-09-01 06:09:59,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:09:59,152 INFO L85 PathProgramCache]: Analyzing trace with hash 344069907, now seen corresponding path program 4 times [2023-09-01 06:09:59,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:09:59,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308870562] [2023-09-01 06:09:59,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:09:59,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:09:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:09:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:59,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:09:59,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308870562] [2023-09-01 06:09:59,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308870562] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:09:59,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978482856] [2023-09-01 06:09:59,764 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 06:09:59,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:09:59,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:09:59,765 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:09:59,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 06:09:59,928 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 06:09:59,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:09:59,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 06:09:59,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:09:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:09:59,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:10:00,580 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:10:00,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978482856] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:10:00,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:10:00,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-09-01 06:10:00,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549282033] [2023-09-01 06:10:00,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:10:00,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-09-01 06:10:00,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:10:00,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-09-01 06:10:00,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-09-01 06:10:00,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 497 [2023-09-01 06:10:00,653 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) [2023-09-01 06:10:00,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:10:00,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 497 [2023-09-01 06:10:00,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:10:59,155 INFO L130 PetriNetUnfolder]: 208596/360494 cut-off events. [2023-09-01 06:10:59,155 INFO L131 PetriNetUnfolder]: For 4360885/4360885 co-relation queries the response was YES. [2023-09-01 06:11:04,736 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. [2023-09-01 06:11:06,203 INFO L137 encePairwiseOnDemand]: 494/497 looper letters, 2874 selfloop transitions, 47 changer transitions 0/2924 dead transitions. [2023-09-01 06:11:06,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 2924 transitions, 32141 flow [2023-09-01 06:11:06,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-09-01 06:11:06,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-09-01 06:11:06,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 11152 transitions. [2023-09-01 06:11:06,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4674714956405097 [2023-09-01 06:11:06,236 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 11152 transitions. [2023-09-01 06:11:06,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 11152 transitions. [2023-09-01 06:11:06,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:11:06,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 11152 transitions. [2023-09-01 06:11:06,266 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) [2023-09-01 06:11:06,285 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) [2023-09-01 06:11:06,288 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) [2023-09-01 06:11:06,288 INFO L175 Difference]: Start difference. First operand has 192 places, 94 transitions, 855 flow. Second operand 48 states and 11152 transitions. [2023-09-01 06:11:06,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 2924 transitions, 32141 flow [2023-09-01 06:11:10,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 2924 transitions, 25465 flow, removed 2303 selfloop flow, removed 23 redundant places. [2023-09-01 06:11:10,268 INFO L231 Difference]: Finished difference. Result has 240 places, 118 transitions, 1047 flow [2023-09-01 06:11:10,269 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} [2023-09-01 06:11:10,270 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 201 predicate places. [2023-09-01 06:11:10,270 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 118 transitions, 1047 flow [2023-09-01 06:11:10,271 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) [2023-09-01 06:11:10,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:11:10,272 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1] [2023-09-01 06:11:10,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 06:11:10,490 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 [2023-09-01 06:11:10,491 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)] === [2023-09-01 06:11:10,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:11:10,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1504541215, now seen corresponding path program 5 times [2023-09-01 06:11:10,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:11:10,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763766773] [2023-09-01 06:11:10,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:11:10,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:11:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:11:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:11:12,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:11:12,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763766773] [2023-09-01 06:11:12,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763766773] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:11:12,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381942015] [2023-09-01 06:11:12,543 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 06:11:12,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:11:12,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:11:12,561 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:11:12,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 06:11:12,831 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-09-01 06:11:12,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:11:12,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 49 conjunts are in the unsatisfiable core [2023-09-01 06:11:12,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:11:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:11:12,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:11:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:11:15,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381942015] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:11:15,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:11:15,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2023-09-01 06:11:15,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026468839] [2023-09-01 06:11:15,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:11:15,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-09-01 06:11:15,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:11:15,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-09-01 06:11:15,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2023-09-01 06:11:16,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-09-01 06:11:16,128 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) [2023-09-01 06:11:16,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:11:16,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-09-01 06:11:16,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand