/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread/queue_longer.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:26:59,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:26:59,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:26:59,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:26:59,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:26:59,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:26:59,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:26:59,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:26:59,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:26:59,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:26:59,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:26:59,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:26:59,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:26:59,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:26:59,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:26:59,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:26:59,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:26:59,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:26:59,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:26:59,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:26:59,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:26:59,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:26:59,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:26:59,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:26:59,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:26:59,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:26:59,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:26:59,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:26:59,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:26:59,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:26:59,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:26:59,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:26:59,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:26:59,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:26:59,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:26:59,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:26:59,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:26:59,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:26:59,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:26:59,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:26:59,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:26:59,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:26:59,172 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:26:59,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:26:59,173 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:26:59,173 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:26:59,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:26:59,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:26:59,174 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:26:59,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:26:59,174 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:26:59,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:26:59,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:26:59,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:26:59,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:26:59,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:26:59,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:26:59,178 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:26:59,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:26:59,178 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:26:59,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:26:59,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:26:59,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:26:59,179 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:26:59,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:26:59,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:26:59,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:26:59,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:26:59,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:26:59,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:26:59,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:26:59,180 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:26:59,180 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:26:59,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:26:59,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:26:59,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:26:59,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:26:59,445 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:26:59,448 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:26:59,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_longer.i [2022-09-16 11:26:59,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c793d925d/d400a475953d4aedb5d1b734526dbcb1/FLAG0290db768 [2022-09-16 11:27:00,028 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:27:00,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i [2022-09-16 11:27:00,043 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c793d925d/d400a475953d4aedb5d1b734526dbcb1/FLAG0290db768 [2022-09-16 11:27:00,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c793d925d/d400a475953d4aedb5d1b734526dbcb1 [2022-09-16 11:27:00,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:27:00,519 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:27:00,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:27:00,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:27:00,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:27:00,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:27:00" (1/1) ... [2022-09-16 11:27:00,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b4d064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:27:00, skipping insertion in model container [2022-09-16 11:27:00,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:27:00" (1/1) ... [2022-09-16 11:27:00,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:27:00,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:27:01,051 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43296,43309] [2022-09-16 11:27:01,057 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43503,43516] [2022-09-16 11:27:01,063 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43783,43796] [2022-09-16 11:27:01,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:27:01,086 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:27:01,139 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43296,43309] [2022-09-16 11:27:01,141 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43503,43516] [2022-09-16 11:27:01,148 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43783,43796] [2022-09-16 11:27:01,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:27:01,220 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:27:01,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:27:01 WrapperNode [2022-09-16 11:27:01,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:27:01,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:27:01,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:27:01,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:27:01,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:27:01" (1/1) ... [2022-09-16 11:27:01,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:27:01" (1/1) ... [2022-09-16 11:27:01,284 INFO L138 Inliner]: procedures = 274, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 261 [2022-09-16 11:27:01,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:27:01,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:27:01,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:27:01,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:27:01,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:27:01" (1/1) ... [2022-09-16 11:27:01,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:27:01" (1/1) ... [2022-09-16 11:27:01,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:27:01" (1/1) ... [2022-09-16 11:27:01,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:27:01" (1/1) ... [2022-09-16 11:27:01,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:27:01" (1/1) ... [2022-09-16 11:27:01,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:27:01" (1/1) ... [2022-09-16 11:27:01,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:27:01" (1/1) ... [2022-09-16 11:27:01,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:27:01,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:27:01,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:27:01,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:27:01,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:27:01" (1/1) ... [2022-09-16 11:27:01,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:27:01,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:01,370 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) [2022-09-16 11:27:01,394 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 [2022-09-16 11:27:01,411 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-09-16 11:27:01,411 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-09-16 11:27:01,411 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-09-16 11:27:01,412 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-09-16 11:27:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:27:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:27:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:27:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:27:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-16 11:27:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:27:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:27:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:27:01,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:27:01,415 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:27:01,558 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:27:01,572 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:27:01,956 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:27:01,969 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:27:01,969 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-09-16 11:27:01,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:27:01 BoogieIcfgContainer [2022-09-16 11:27:01,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:27:01,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:27:01,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:27:01,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:27:01,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:27:00" (1/3) ... [2022-09-16 11:27:01,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e1a645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:27:01, skipping insertion in model container [2022-09-16 11:27:01,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:27:01" (2/3) ... [2022-09-16 11:27:01,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e1a645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:27:01, skipping insertion in model container [2022-09-16 11:27:01,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:27:01" (3/3) ... [2022-09-16 11:27:01,999 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2022-09-16 11:27:02,016 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:27:02,017 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-09-16 11:27:02,017 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:27:02,177 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 11:27:02,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 299 places, 307 transitions, 630 flow [2022-09-16 11:27:02,369 INFO L130 PetriNetUnfolder]: 15/305 cut-off events. [2022-09-16 11:27:02,369 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 11:27:02,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 305 events. 15/305 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 467 event pairs, 0 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 223. Up to 2 conditions per place. [2022-09-16 11:27:02,382 INFO L82 GeneralOperation]: Start removeDead. Operand has 299 places, 307 transitions, 630 flow [2022-09-16 11:27:02,393 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 295 transitions, 599 flow [2022-09-16 11:27:02,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:27:02,411 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=false, 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;@39de52f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:27:02,411 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-09-16 11:27:02,431 INFO L130 PetriNetUnfolder]: 3/113 cut-off events. [2022-09-16 11:27:02,435 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:27:02,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:02,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:02,437 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:02,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:02,443 INFO L85 PathProgramCache]: Analyzing trace with hash 454497233, now seen corresponding path program 1 times [2022-09-16 11:27:02,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:02,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217206555] [2022-09-16 11:27:02,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:02,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:03,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:03,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:03,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217206555] [2022-09-16 11:27:03,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217206555] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:03,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:03,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:27:03,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507847901] [2022-09-16 11:27:03,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:03,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:27:03,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:03,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:27:03,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:27:03,124 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 307 [2022-09-16 11:27:03,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 295 transitions, 599 flow. Second operand has 12 states, 12 states have (on average 232.33333333333334) internal successors, (2788), 12 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:03,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:03,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 307 [2022-09-16 11:27:03,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:04,448 INFO L130 PetriNetUnfolder]: 1003/4827 cut-off events. [2022-09-16 11:27:04,448 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2022-09-16 11:27:04,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6351 conditions, 4827 events. 1003/4827 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 42180 event pairs, 789 based on Foata normal form. 200/4356 useless extension candidates. Maximal degree in co-relation 6146. Up to 1435 conditions per place. [2022-09-16 11:27:04,494 INFO L137 encePairwiseOnDemand]: 289/307 looper letters, 52 selfloop transitions, 12 changer transitions 0/281 dead transitions. [2022-09-16 11:27:04,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 281 transitions, 699 flow [2022-09-16 11:27:04,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-16 11:27:04,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-16 11:27:04,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3060 transitions. [2022-09-16 11:27:04,516 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7667251315459784 [2022-09-16 11:27:04,517 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3060 transitions. [2022-09-16 11:27:04,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3060 transitions. [2022-09-16 11:27:04,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:04,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3060 transitions. [2022-09-16 11:27:04,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 235.3846153846154) internal successors, (3060), 13 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:04,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 307.0) internal successors, (4298), 14 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:04,550 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 307.0) internal successors, (4298), 14 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:04,552 INFO L175 Difference]: Start difference. First operand has 287 places, 295 transitions, 599 flow. Second operand 13 states and 3060 transitions. [2022-09-16 11:27:04,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 281 transitions, 699 flow [2022-09-16 11:27:04,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 281 transitions, 694 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:27:04,567 INFO L231 Difference]: Finished difference. Result has 288 places, 281 transitions, 590 flow [2022-09-16 11:27:04,570 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=590, PETRI_PLACES=288, PETRI_TRANSITIONS=281} [2022-09-16 11:27:04,574 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, 1 predicate places. [2022-09-16 11:27:04,575 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 281 transitions, 590 flow [2022-09-16 11:27:04,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 232.33333333333334) internal successors, (2788), 12 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:04,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:04,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:04,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:27:04,578 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:04,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:04,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1481397607, now seen corresponding path program 1 times [2022-09-16 11:27:04,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:04,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9242228] [2022-09-16 11:27:04,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:04,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:04,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:04,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:04,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9242228] [2022-09-16 11:27:04,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9242228] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:04,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:04,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:27:04,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617768399] [2022-09-16 11:27:04,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:04,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:27:04,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:04,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:27:04,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:27:04,714 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 307 [2022-09-16 11:27:04,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 281 transitions, 590 flow. Second operand has 4 states, 4 states have (on average 283.75) internal successors, (1135), 4 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:04,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:04,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 307 [2022-09-16 11:27:04,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:04,826 INFO L130 PetriNetUnfolder]: 34/487 cut-off events. [2022-09-16 11:27:04,826 INFO L131 PetriNetUnfolder]: For 19/20 co-relation queries the response was YES. [2022-09-16 11:27:04,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 487 events. 34/487 cut-off events. For 19/20 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1764 event pairs, 5 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 487. Up to 39 conditions per place. [2022-09-16 11:27:04,833 INFO L137 encePairwiseOnDemand]: 300/307 looper letters, 21 selfloop transitions, 4 changer transitions 0/291 dead transitions. [2022-09-16 11:27:04,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 291 transitions, 663 flow [2022-09-16 11:27:04,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:27:04,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:27:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1438 transitions. [2022-09-16 11:27:04,838 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9368078175895765 [2022-09-16 11:27:04,838 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1438 transitions. [2022-09-16 11:27:04,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1438 transitions. [2022-09-16 11:27:04,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:04,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1438 transitions. [2022-09-16 11:27:04,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 287.6) internal successors, (1438), 5 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:04,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:04,845 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:04,846 INFO L175 Difference]: Start difference. First operand has 288 places, 281 transitions, 590 flow. Second operand 5 states and 1438 transitions. [2022-09-16 11:27:04,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 291 transitions, 663 flow [2022-09-16 11:27:04,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 291 transitions, 640 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-09-16 11:27:04,854 INFO L231 Difference]: Finished difference. Result has 284 places, 284 transitions, 599 flow [2022-09-16 11:27:04,855 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=599, PETRI_PLACES=284, PETRI_TRANSITIONS=284} [2022-09-16 11:27:04,856 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, -3 predicate places. [2022-09-16 11:27:04,856 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 284 transitions, 599 flow [2022-09-16 11:27:04,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 283.75) internal successors, (1135), 4 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:04,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:04,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:04,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:27:04,857 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:04,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:04,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1906593081, now seen corresponding path program 1 times [2022-09-16 11:27:04,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:04,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662930170] [2022-09-16 11:27:04,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:04,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:12,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:12,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:12,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662930170] [2022-09-16 11:27:12,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662930170] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:12,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:12,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-16 11:27:12,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996600138] [2022-09-16 11:27:12,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:12,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 11:27:12,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:12,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 11:27:12,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-09-16 11:27:12,878 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 307 [2022-09-16 11:27:12,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 284 transitions, 599 flow. Second operand has 19 states, 19 states have (on average 213.78947368421052) internal successors, (4062), 19 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:12,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:12,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 307 [2022-09-16 11:27:12,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:20,357 INFO L130 PetriNetUnfolder]: 3601/11557 cut-off events. [2022-09-16 11:27:20,358 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-09-16 11:27:20,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17452 conditions, 11557 events. 3601/11557 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 114675 event pairs, 2969 based on Foata normal form. 0/10154 useless extension candidates. Maximal degree in co-relation 17359. Up to 4855 conditions per place. [2022-09-16 11:27:20,466 INFO L137 encePairwiseOnDemand]: 286/307 looper letters, 119 selfloop transitions, 27 changer transitions 0/347 dead transitions. [2022-09-16 11:27:20,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 347 transitions, 1023 flow [2022-09-16 11:27:20,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-16 11:27:20,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-16 11:27:20,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4390 transitions. [2022-09-16 11:27:20,525 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7149837133550488 [2022-09-16 11:27:20,525 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4390 transitions. [2022-09-16 11:27:20,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4390 transitions. [2022-09-16 11:27:20,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:20,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4390 transitions. [2022-09-16 11:27:20,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 219.5) internal successors, (4390), 20 states have internal predecessors, (4390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:20,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 307.0) internal successors, (6447), 21 states have internal predecessors, (6447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:20,552 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 307.0) internal successors, (6447), 21 states have internal predecessors, (6447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:20,553 INFO L175 Difference]: Start difference. First operand has 284 places, 284 transitions, 599 flow. Second operand 20 states and 4390 transitions. [2022-09-16 11:27:20,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 347 transitions, 1023 flow [2022-09-16 11:27:20,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 347 transitions, 1021 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:27:20,562 INFO L231 Difference]: Finished difference. Result has 311 places, 305 transitions, 754 flow [2022-09-16 11:27:20,563 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=754, PETRI_PLACES=311, PETRI_TRANSITIONS=305} [2022-09-16 11:27:20,565 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, 24 predicate places. [2022-09-16 11:27:20,565 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 305 transitions, 754 flow [2022-09-16 11:27:20,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 213.78947368421052) internal successors, (4062), 19 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:20,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:20,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:20,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:27:20,568 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:20,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:20,569 INFO L85 PathProgramCache]: Analyzing trace with hash 26092150, now seen corresponding path program 1 times [2022-09-16 11:27:20,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:20,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756399195] [2022-09-16 11:27:20,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:20,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:21,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:21,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:21,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756399195] [2022-09-16 11:27:21,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756399195] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:21,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:21,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-16 11:27:21,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216092365] [2022-09-16 11:27:21,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:21,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-09-16 11:27:21,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:21,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-09-16 11:27:21,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-09-16 11:27:21,287 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 307 [2022-09-16 11:27:21,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 305 transitions, 754 flow. Second operand has 20 states, 20 states have (on average 203.2) internal successors, (4064), 20 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:21,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:21,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 307 [2022-09-16 11:27:21,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:24,222 INFO L130 PetriNetUnfolder]: 4210/14681 cut-off events. [2022-09-16 11:27:24,223 INFO L131 PetriNetUnfolder]: For 1232/1235 co-relation queries the response was YES. [2022-09-16 11:27:24,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23089 conditions, 14681 events. 4210/14681 cut-off events. For 1232/1235 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 153655 event pairs, 964 based on Foata normal form. 102/13202 useless extension candidates. Maximal degree in co-relation 22970. Up to 4446 conditions per place. [2022-09-16 11:27:24,399 INFO L137 encePairwiseOnDemand]: 285/307 looper letters, 192 selfloop transitions, 44 changer transitions 0/428 dead transitions. [2022-09-16 11:27:24,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 428 transitions, 1530 flow [2022-09-16 11:27:24,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-16 11:27:24,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-16 11:27:24,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4646 transitions. [2022-09-16 11:27:24,411 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6878886585726977 [2022-09-16 11:27:24,412 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4646 transitions. [2022-09-16 11:27:24,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4646 transitions. [2022-09-16 11:27:24,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:24,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4646 transitions. [2022-09-16 11:27:24,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 211.1818181818182) internal successors, (4646), 22 states have internal predecessors, (4646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:24,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 307.0) internal successors, (7061), 23 states have internal predecessors, (7061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:24,449 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 307.0) internal successors, (7061), 23 states have internal predecessors, (7061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:24,449 INFO L175 Difference]: Start difference. First operand has 311 places, 305 transitions, 754 flow. Second operand 22 states and 4646 transitions. [2022-09-16 11:27:24,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 428 transitions, 1530 flow [2022-09-16 11:27:24,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 428 transitions, 1517 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-16 11:27:24,478 INFO L231 Difference]: Finished difference. Result has 332 places, 334 transitions, 999 flow [2022-09-16 11:27:24,479 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=999, PETRI_PLACES=332, PETRI_TRANSITIONS=334} [2022-09-16 11:27:24,483 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, 45 predicate places. [2022-09-16 11:27:24,483 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 334 transitions, 999 flow [2022-09-16 11:27:24,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 203.2) internal successors, (4064), 20 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:24,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:24,491 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:24,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:27:24,491 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:24,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:24,492 INFO L85 PathProgramCache]: Analyzing trace with hash 628043758, now seen corresponding path program 1 times [2022-09-16 11:27:24,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:24,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707376799] [2022-09-16 11:27:24,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:24,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:27:24,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:24,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707376799] [2022-09-16 11:27:24,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707376799] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:24,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:24,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:27:24,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803771771] [2022-09-16 11:27:24,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:24,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:27:24,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:24,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:27:24,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:27:24,554 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 307 [2022-09-16 11:27:24,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 334 transitions, 999 flow. Second operand has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:24,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:24,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 307 [2022-09-16 11:27:24,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:24,837 INFO L130 PetriNetUnfolder]: 167/2210 cut-off events. [2022-09-16 11:27:24,837 INFO L131 PetriNetUnfolder]: For 253/254 co-relation queries the response was YES. [2022-09-16 11:27:24,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2998 conditions, 2210 events. 167/2210 cut-off events. For 253/254 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 19134 event pairs, 20 based on Foata normal form. 18/1986 useless extension candidates. Maximal degree in co-relation 2903. Up to 140 conditions per place. [2022-09-16 11:27:24,864 INFO L137 encePairwiseOnDemand]: 301/307 looper letters, 13 selfloop transitions, 8 changer transitions 0/337 dead transitions. [2022-09-16 11:27:24,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 337 transitions, 1048 flow [2022-09-16 11:27:24,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:27:24,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:27:24,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1429 transitions. [2022-09-16 11:27:24,869 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9309446254071662 [2022-09-16 11:27:24,869 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1429 transitions. [2022-09-16 11:27:24,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1429 transitions. [2022-09-16 11:27:24,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:24,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1429 transitions. [2022-09-16 11:27:24,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 285.8) internal successors, (1429), 5 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:24,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:24,876 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:24,876 INFO L175 Difference]: Start difference. First operand has 332 places, 334 transitions, 999 flow. Second operand 5 states and 1429 transitions. [2022-09-16 11:27:24,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 337 transitions, 1048 flow [2022-09-16 11:27:24,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 337 transitions, 1015 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-09-16 11:27:24,889 INFO L231 Difference]: Finished difference. Result has 328 places, 334 transitions, 986 flow [2022-09-16 11:27:24,890 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=986, PETRI_PLACES=328, PETRI_TRANSITIONS=334} [2022-09-16 11:27:24,893 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, 41 predicate places. [2022-09-16 11:27:24,893 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 334 transitions, 986 flow [2022-09-16 11:27:24,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:24,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:24,894 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:24,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:27:24,894 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:24,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:24,895 INFO L85 PathProgramCache]: Analyzing trace with hash -2005479111, now seen corresponding path program 1 times [2022-09-16 11:27:24,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:24,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122232653] [2022-09-16 11:27:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:24,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:24,952 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:24,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:24,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122232653] [2022-09-16 11:27:24,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122232653] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:24,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262206102] [2022-09-16 11:27:24,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:24,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:24,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:24,959 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) [2022-09-16 11:27:24,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:27:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:25,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:27:25,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:25,206 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:25,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:27:25,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262206102] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:25,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:27:25,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:27:25,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677372778] [2022-09-16 11:27:25,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:25,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:27:25,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:25,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:27:25,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:27:25,210 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 307 [2022-09-16 11:27:25,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 334 transitions, 986 flow. Second operand has 6 states, 6 states have (on average 284.3333333333333) internal successors, (1706), 6 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:25,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:25,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 307 [2022-09-16 11:27:25,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:25,599 INFO L130 PetriNetUnfolder]: 165/2192 cut-off events. [2022-09-16 11:27:25,600 INFO L131 PetriNetUnfolder]: For 387/388 co-relation queries the response was YES. [2022-09-16 11:27:25,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3066 conditions, 2192 events. 165/2192 cut-off events. For 387/388 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 18842 event pairs, 5 based on Foata normal form. 18/1971 useless extension candidates. Maximal degree in co-relation 2978. Up to 95 conditions per place. [2022-09-16 11:27:25,627 INFO L137 encePairwiseOnDemand]: 302/307 looper letters, 19 selfloop transitions, 6 changer transitions 0/341 dead transitions. [2022-09-16 11:27:25,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 341 transitions, 1053 flow [2022-09-16 11:27:25,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:27:25,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:27:25,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2000 transitions. [2022-09-16 11:27:25,635 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9306654257794323 [2022-09-16 11:27:25,636 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2000 transitions. [2022-09-16 11:27:25,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2000 transitions. [2022-09-16 11:27:25,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:25,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2000 transitions. [2022-09-16 11:27:25,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.7142857142857) internal successors, (2000), 7 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:25,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 307.0) internal successors, (2456), 8 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:25,645 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 307.0) internal successors, (2456), 8 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:25,645 INFO L175 Difference]: Start difference. First operand has 328 places, 334 transitions, 986 flow. Second operand 7 states and 2000 transitions. [2022-09-16 11:27:25,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 341 transitions, 1053 flow [2022-09-16 11:27:25,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 341 transitions, 1041 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:27:25,656 INFO L231 Difference]: Finished difference. Result has 330 places, 333 transitions, 982 flow [2022-09-16 11:27:25,657 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=982, PETRI_PLACES=330, PETRI_TRANSITIONS=333} [2022-09-16 11:27:25,658 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, 43 predicate places. [2022-09-16 11:27:25,658 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 333 transitions, 982 flow [2022-09-16 11:27:25,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 284.3333333333333) internal successors, (1706), 6 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:25,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:25,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:25,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:27:25,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-09-16 11:27:25,873 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:25,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:25,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1701251284, now seen corresponding path program 1 times [2022-09-16 11:27:25,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:25,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133595443] [2022-09-16 11:27:25,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:25,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:25,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:25,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:25,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133595443] [2022-09-16 11:27:25,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133595443] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:25,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:25,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:27:25,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81343174] [2022-09-16 11:27:25,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:25,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:27:25,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:25,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:27:25,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:27:25,928 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 307 [2022-09-16 11:27:25,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 333 transitions, 982 flow. Second operand has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:25,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:25,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 307 [2022-09-16 11:27:25,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:26,104 INFO L130 PetriNetUnfolder]: 70/1137 cut-off events. [2022-09-16 11:27:26,105 INFO L131 PetriNetUnfolder]: For 108/109 co-relation queries the response was YES. [2022-09-16 11:27:26,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1407 conditions, 1137 events. 70/1137 cut-off events. For 108/109 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4773 event pairs, 5 based on Foata normal form. 0/988 useless extension candidates. Maximal degree in co-relation 1384. Up to 38 conditions per place. [2022-09-16 11:27:26,117 INFO L137 encePairwiseOnDemand]: 303/307 looper letters, 10 selfloop transitions, 3 changer transitions 0/306 dead transitions. [2022-09-16 11:27:26,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 306 transitions, 855 flow [2022-09-16 11:27:26,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:27:26,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:27:26,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 878 transitions. [2022-09-16 11:27:26,120 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9533116178067318 [2022-09-16 11:27:26,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 878 transitions. [2022-09-16 11:27:26,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 878 transitions. [2022-09-16 11:27:26,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:26,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 878 transitions. [2022-09-16 11:27:26,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.6666666666667) internal successors, (878), 3 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:26,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:26,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:26,125 INFO L175 Difference]: Start difference. First operand has 330 places, 333 transitions, 982 flow. Second operand 3 states and 878 transitions. [2022-09-16 11:27:26,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 306 transitions, 855 flow [2022-09-16 11:27:26,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 306 transitions, 771 flow, removed 2 selfloop flow, removed 21 redundant places. [2022-09-16 11:27:26,132 INFO L231 Difference]: Finished difference. Result has 307 places, 303 transitions, 749 flow [2022-09-16 11:27:26,132 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=749, PETRI_PLACES=307, PETRI_TRANSITIONS=303} [2022-09-16 11:27:26,133 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, 20 predicate places. [2022-09-16 11:27:26,133 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 303 transitions, 749 flow [2022-09-16 11:27:26,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:26,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:26,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:26,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:27:26,134 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:26,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:26,135 INFO L85 PathProgramCache]: Analyzing trace with hash -520551856, now seen corresponding path program 1 times [2022-09-16 11:27:26,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:26,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472593307] [2022-09-16 11:27:26,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:26,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:28,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:28,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:28,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472593307] [2022-09-16 11:27:28,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472593307] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:28,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:28,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-09-16 11:27:28,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692086710] [2022-09-16 11:27:28,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:28,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:27:28,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:28,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:27:28,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:27:28,365 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 307 [2022-09-16 11:27:28,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 303 transitions, 749 flow. Second operand has 18 states, 18 states have (on average 214.05555555555554) internal successors, (3853), 18 states have internal predecessors, (3853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:28,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:28,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 307 [2022-09-16 11:27:28,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:30,853 INFO L130 PetriNetUnfolder]: 1698/7572 cut-off events. [2022-09-16 11:27:30,854 INFO L131 PetriNetUnfolder]: For 349/352 co-relation queries the response was YES. [2022-09-16 11:27:30,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11341 conditions, 7572 events. 1698/7572 cut-off events. For 349/352 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 70226 event pairs, 1405 based on Foata normal form. 2/6782 useless extension candidates. Maximal degree in co-relation 11324. Up to 2632 conditions per place. [2022-09-16 11:27:30,920 INFO L137 encePairwiseOnDemand]: 285/307 looper letters, 92 selfloop transitions, 33 changer transitions 0/328 dead transitions. [2022-09-16 11:27:30,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 328 transitions, 1065 flow [2022-09-16 11:27:30,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-16 11:27:30,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-16 11:27:30,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4364 transitions. [2022-09-16 11:27:30,930 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7107491856677525 [2022-09-16 11:27:30,930 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4364 transitions. [2022-09-16 11:27:30,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4364 transitions. [2022-09-16 11:27:30,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:30,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4364 transitions. [2022-09-16 11:27:30,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 218.2) internal successors, (4364), 20 states have internal predecessors, (4364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:30,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 307.0) internal successors, (6447), 21 states have internal predecessors, (6447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:30,950 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 307.0) internal successors, (6447), 21 states have internal predecessors, (6447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:30,950 INFO L175 Difference]: Start difference. First operand has 307 places, 303 transitions, 749 flow. Second operand 20 states and 4364 transitions. [2022-09-16 11:27:30,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 328 transitions, 1065 flow [2022-09-16 11:27:30,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 328 transitions, 1062 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:27:30,958 INFO L231 Difference]: Finished difference. Result has 330 places, 313 transitions, 885 flow [2022-09-16 11:27:30,959 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=885, PETRI_PLACES=330, PETRI_TRANSITIONS=313} [2022-09-16 11:27:30,960 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, 43 predicate places. [2022-09-16 11:27:30,960 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 313 transitions, 885 flow [2022-09-16 11:27:30,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 214.05555555555554) internal successors, (3853), 18 states have internal predecessors, (3853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:30,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:30,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:30,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:27:30,961 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:30,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:30,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1870848831, now seen corresponding path program 1 times [2022-09-16 11:27:30,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:30,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412782152] [2022-09-16 11:27:30,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:30,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:31,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:31,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412782152] [2022-09-16 11:27:31,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412782152] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:31,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:31,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-16 11:27:31,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750931793] [2022-09-16 11:27:31,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:31,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 11:27:31,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:31,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 11:27:31,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-09-16 11:27:31,411 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 307 [2022-09-16 11:27:31,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 313 transitions, 885 flow. Second operand has 19 states, 19 states have (on average 203.47368421052633) internal successors, (3866), 19 states have internal predecessors, (3866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:31,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:31,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 307 [2022-09-16 11:27:31,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:33,057 INFO L130 PetriNetUnfolder]: 1692/7508 cut-off events. [2022-09-16 11:27:33,058 INFO L131 PetriNetUnfolder]: For 717/720 co-relation queries the response was YES. [2022-09-16 11:27:33,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11461 conditions, 7508 events. 1692/7508 cut-off events. For 717/720 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 69787 event pairs, 844 based on Foata normal form. 6/6730 useless extension candidates. Maximal degree in co-relation 11439. Up to 2522 conditions per place. [2022-09-16 11:27:33,143 INFO L137 encePairwiseOnDemand]: 287/307 looper letters, 106 selfloop transitions, 29 changer transitions 0/329 dead transitions. [2022-09-16 11:27:33,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 329 transitions, 1211 flow [2022-09-16 11:27:33,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:27:33,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:27:33,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3734 transitions. [2022-09-16 11:27:33,153 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6757148027506333 [2022-09-16 11:27:33,153 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3734 transitions. [2022-09-16 11:27:33,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3734 transitions. [2022-09-16 11:27:33,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:33,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3734 transitions. [2022-09-16 11:27:33,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 207.44444444444446) internal successors, (3734), 18 states have internal predecessors, (3734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:33,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 307.0) internal successors, (5833), 19 states have internal predecessors, (5833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:33,171 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 307.0) internal successors, (5833), 19 states have internal predecessors, (5833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:33,171 INFO L175 Difference]: Start difference. First operand has 330 places, 313 transitions, 885 flow. Second operand 18 states and 3734 transitions. [2022-09-16 11:27:33,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 329 transitions, 1211 flow [2022-09-16 11:27:33,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 329 transitions, 1179 flow, removed 2 selfloop flow, removed 12 redundant places. [2022-09-16 11:27:33,181 INFO L231 Difference]: Finished difference. Result has 333 places, 311 transitions, 899 flow [2022-09-16 11:27:33,182 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=899, PETRI_PLACES=333, PETRI_TRANSITIONS=311} [2022-09-16 11:27:33,182 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, 46 predicate places. [2022-09-16 11:27:33,183 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 311 transitions, 899 flow [2022-09-16 11:27:33,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 203.47368421052633) internal successors, (3866), 19 states have internal predecessors, (3866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:33,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:33,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:33,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:27:33,184 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:33,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:33,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1500400150, now seen corresponding path program 1 times [2022-09-16 11:27:33,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:33,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853978824] [2022-09-16 11:27:33,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:33,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:33,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:33,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:33,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853978824] [2022-09-16 11:27:33,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853978824] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:33,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:33,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:27:33,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552217836] [2022-09-16 11:27:33,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:33,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:27:33,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:33,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:27:33,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:27:33,231 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 307 [2022-09-16 11:27:33,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 311 transitions, 899 flow. Second operand has 4 states, 4 states have (on average 279.5) internal successors, (1118), 4 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:33,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:33,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 307 [2022-09-16 11:27:33,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:33,464 INFO L130 PetriNetUnfolder]: 112/1506 cut-off events. [2022-09-16 11:27:33,464 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2022-09-16 11:27:33,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2179 conditions, 1506 events. 112/1506 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 6731 event pairs, 31 based on Foata normal form. 0/1350 useless extension candidates. Maximal degree in co-relation 2157. Up to 191 conditions per place. [2022-09-16 11:27:33,481 INFO L137 encePairwiseOnDemand]: 298/307 looper letters, 27 selfloop transitions, 4 changer transitions 0/323 dead transitions. [2022-09-16 11:27:33,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 323 transitions, 991 flow [2022-09-16 11:27:33,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:27:33,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:27:33,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1426 transitions. [2022-09-16 11:27:33,485 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9289902280130293 [2022-09-16 11:27:33,485 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1426 transitions. [2022-09-16 11:27:33,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1426 transitions. [2022-09-16 11:27:33,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:33,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1426 transitions. [2022-09-16 11:27:33,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 285.2) internal successors, (1426), 5 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:33,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:33,491 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:33,491 INFO L175 Difference]: Start difference. First operand has 333 places, 311 transitions, 899 flow. Second operand 5 states and 1426 transitions. [2022-09-16 11:27:33,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 323 transitions, 991 flow [2022-09-16 11:27:33,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 323 transitions, 937 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-09-16 11:27:33,499 INFO L231 Difference]: Finished difference. Result has 324 places, 314 transitions, 881 flow [2022-09-16 11:27:33,500 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=881, PETRI_PLACES=324, PETRI_TRANSITIONS=314} [2022-09-16 11:27:33,501 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, 37 predicate places. [2022-09-16 11:27:33,501 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 314 transitions, 881 flow [2022-09-16 11:27:33,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 279.5) internal successors, (1118), 4 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:33,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:33,502 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:33,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:27:33,502 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:33,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:33,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1793340255, now seen corresponding path program 1 times [2022-09-16 11:27:33,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:33,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316594490] [2022-09-16 11:27:33,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:33,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:27:33,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:33,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316594490] [2022-09-16 11:27:33,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316594490] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:33,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:33,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:27:33,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137996396] [2022-09-16 11:27:33,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:33,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:27:33,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:33,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:27:33,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:27:33,553 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 307 [2022-09-16 11:27:33,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 314 transitions, 881 flow. Second operand has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:33,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:33,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 307 [2022-09-16 11:27:33,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:33,740 INFO L130 PetriNetUnfolder]: 104/1444 cut-off events. [2022-09-16 11:27:33,740 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-09-16 11:27:33,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2113 conditions, 1444 events. 104/1444 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 6531 event pairs, 10 based on Foata normal form. 16/1353 useless extension candidates. Maximal degree in co-relation 2088. Up to 70 conditions per place. [2022-09-16 11:27:33,751 INFO L137 encePairwiseOnDemand]: 300/307 looper letters, 16 selfloop transitions, 8 changer transitions 0/316 dead transitions. [2022-09-16 11:27:33,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 316 transitions, 935 flow [2022-09-16 11:27:33,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:27:33,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:27:33,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1413 transitions. [2022-09-16 11:27:33,753 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9205211726384365 [2022-09-16 11:27:33,753 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1413 transitions. [2022-09-16 11:27:33,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1413 transitions. [2022-09-16 11:27:33,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:33,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1413 transitions. [2022-09-16 11:27:33,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:33,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:33,758 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:33,758 INFO L175 Difference]: Start difference. First operand has 324 places, 314 transitions, 881 flow. Second operand 5 states and 1413 transitions. [2022-09-16 11:27:33,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 316 transitions, 935 flow [2022-09-16 11:27:33,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 316 transitions, 933 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:27:33,766 INFO L231 Difference]: Finished difference. Result has 326 places, 313 transitions, 895 flow [2022-09-16 11:27:33,767 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=895, PETRI_PLACES=326, PETRI_TRANSITIONS=313} [2022-09-16 11:27:33,767 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, 39 predicate places. [2022-09-16 11:27:33,767 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 313 transitions, 895 flow [2022-09-16 11:27:33,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:33,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:33,768 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:33,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:27:33,768 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:33,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:33,769 INFO L85 PathProgramCache]: Analyzing trace with hash -241026140, now seen corresponding path program 1 times [2022-09-16 11:27:33,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:33,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619005937] [2022-09-16 11:27:33,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:33,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:33,818 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:33,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:33,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619005937] [2022-09-16 11:27:33,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619005937] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:33,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281938305] [2022-09-16 11:27:33,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:33,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:33,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:33,823 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) [2022-09-16 11:27:33,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:27:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:33,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:27:33,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:33,988 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:33,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:27:33,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281938305] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:33,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:27:33,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:27:33,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079859124] [2022-09-16 11:27:33,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:33,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:27:33,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:33,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:27:33,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:27:33,992 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 307 [2022-09-16 11:27:33,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 313 transitions, 895 flow. Second operand has 6 states, 6 states have (on average 280.1666666666667) internal successors, (1681), 6 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:33,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:33,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 307 [2022-09-16 11:27:33,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:34,229 INFO L130 PetriNetUnfolder]: 104/1458 cut-off events. [2022-09-16 11:27:34,229 INFO L131 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-09-16 11:27:34,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2186 conditions, 1458 events. 104/1458 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 6392 event pairs, 3 based on Foata normal form. 20/1372 useless extension candidates. Maximal degree in co-relation 2161. Up to 84 conditions per place. [2022-09-16 11:27:34,245 INFO L137 encePairwiseOnDemand]: 301/307 looper letters, 23 selfloop transitions, 6 changer transitions 0/321 dead transitions. [2022-09-16 11:27:34,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 321 transitions, 975 flow [2022-09-16 11:27:34,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:27:34,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:27:34,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1977 transitions. [2022-09-16 11:27:34,247 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9199627733829688 [2022-09-16 11:27:34,247 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1977 transitions. [2022-09-16 11:27:34,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1977 transitions. [2022-09-16 11:27:34,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:34,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1977 transitions. [2022-09-16 11:27:34,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 282.42857142857144) internal successors, (1977), 7 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:34,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 307.0) internal successors, (2456), 8 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:34,253 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 307.0) internal successors, (2456), 8 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:34,253 INFO L175 Difference]: Start difference. First operand has 326 places, 313 transitions, 895 flow. Second operand 7 states and 1977 transitions. [2022-09-16 11:27:34,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 321 transitions, 975 flow [2022-09-16 11:27:34,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 321 transitions, 963 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:27:34,261 INFO L231 Difference]: Finished difference. Result has 327 places, 311 transitions, 887 flow [2022-09-16 11:27:34,261 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=887, PETRI_PLACES=327, PETRI_TRANSITIONS=311} [2022-09-16 11:27:34,262 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, 40 predicate places. [2022-09-16 11:27:34,262 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 311 transitions, 887 flow [2022-09-16 11:27:34,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 280.1666666666667) internal successors, (1681), 6 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:34,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:34,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:34,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:27:34,486 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,SelfDestructingSolverStorable11 [2022-09-16 11:27:34,487 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:34,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:34,487 INFO L85 PathProgramCache]: Analyzing trace with hash 127294419, now seen corresponding path program 1 times [2022-09-16 11:27:34,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:34,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130457404] [2022-09-16 11:27:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:34,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:34,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:34,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:34,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130457404] [2022-09-16 11:27:34,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130457404] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:34,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:34,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-09-16 11:27:34,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276089152] [2022-09-16 11:27:34,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:34,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-16 11:27:34,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:34,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-16 11:27:34,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-09-16 11:27:34,845 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 307 [2022-09-16 11:27:34,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 311 transitions, 887 flow. Second operand has 17 states, 17 states have (on average 220.8235294117647) internal successors, (3754), 17 states have internal predecessors, (3754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:34,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:34,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 307 [2022-09-16 11:27:34,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:36,410 INFO L130 PetriNetUnfolder]: 1584/7542 cut-off events. [2022-09-16 11:27:36,410 INFO L131 PetriNetUnfolder]: For 921/924 co-relation queries the response was YES. [2022-09-16 11:27:36,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11666 conditions, 7542 events. 1584/7542 cut-off events. For 921/924 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 69167 event pairs, 1324 based on Foata normal form. 2/6861 useless extension candidates. Maximal degree in co-relation 11640. Up to 2515 conditions per place. [2022-09-16 11:27:36,483 INFO L137 encePairwiseOnDemand]: 290/307 looper letters, 78 selfloop transitions, 30 changer transitions 0/319 dead transitions. [2022-09-16 11:27:36,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 319 transitions, 1122 flow [2022-09-16 11:27:36,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:27:36,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:27:36,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3371 transitions. [2022-09-16 11:27:36,488 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7320304017372421 [2022-09-16 11:27:36,488 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3371 transitions. [2022-09-16 11:27:36,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3371 transitions. [2022-09-16 11:27:36,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:36,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3371 transitions. [2022-09-16 11:27:36,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 224.73333333333332) internal successors, (3371), 15 states have internal predecessors, (3371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:36,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 307.0) internal successors, (4912), 16 states have internal predecessors, (4912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:36,500 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 307.0) internal successors, (4912), 16 states have internal predecessors, (4912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:36,500 INFO L175 Difference]: Start difference. First operand has 327 places, 311 transitions, 887 flow. Second operand 15 states and 3371 transitions. [2022-09-16 11:27:36,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 319 transitions, 1122 flow [2022-09-16 11:27:36,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 319 transitions, 1109 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-09-16 11:27:36,510 INFO L231 Difference]: Finished difference. Result has 339 places, 314 transitions, 969 flow [2022-09-16 11:27:36,511 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=969, PETRI_PLACES=339, PETRI_TRANSITIONS=314} [2022-09-16 11:27:36,512 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, 52 predicate places. [2022-09-16 11:27:36,512 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 314 transitions, 969 flow [2022-09-16 11:27:36,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 220.8235294117647) internal successors, (3754), 17 states have internal predecessors, (3754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:36,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:36,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:36,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:27:36,513 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:36,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:36,514 INFO L85 PathProgramCache]: Analyzing trace with hash 2139005732, now seen corresponding path program 1 times [2022-09-16 11:27:36,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:36,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63877785] [2022-09-16 11:27:36,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:36,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:40,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:40,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:40,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63877785] [2022-09-16 11:27:40,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63877785] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:40,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:40,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-09-16 11:27:40,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413200244] [2022-09-16 11:27:40,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:40,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-09-16 11:27:40,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:40,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-09-16 11:27:40,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-09-16 11:27:40,060 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 307 [2022-09-16 11:27:40,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 314 transitions, 969 flow. Second operand has 21 states, 21 states have (on average 209.76190476190476) internal successors, (4405), 21 states have internal predecessors, (4405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:40,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:40,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 307 [2022-09-16 11:27:40,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:42,818 INFO L130 PetriNetUnfolder]: 1743/7756 cut-off events. [2022-09-16 11:27:42,818 INFO L131 PetriNetUnfolder]: For 957/960 co-relation queries the response was YES. [2022-09-16 11:27:42,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12154 conditions, 7756 events. 1743/7756 cut-off events. For 957/960 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 69597 event pairs, 1320 based on Foata normal form. 5/7055 useless extension candidates. Maximal degree in co-relation 12126. Up to 2638 conditions per place. [2022-09-16 11:27:42,886 INFO L137 encePairwiseOnDemand]: 287/307 looper letters, 94 selfloop transitions, 41 changer transitions 0/337 dead transitions. [2022-09-16 11:27:42,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 337 transitions, 1309 flow [2022-09-16 11:27:42,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-16 11:27:42,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-16 11:27:42,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4680 transitions. [2022-09-16 11:27:42,891 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6929227124666865 [2022-09-16 11:27:42,891 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4680 transitions. [2022-09-16 11:27:42,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4680 transitions. [2022-09-16 11:27:42,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:42,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4680 transitions. [2022-09-16 11:27:42,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 212.72727272727272) internal successors, (4680), 22 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:42,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 307.0) internal successors, (7061), 23 states have internal predecessors, (7061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:42,905 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 307.0) internal successors, (7061), 23 states have internal predecessors, (7061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:42,905 INFO L175 Difference]: Start difference. First operand has 339 places, 314 transitions, 969 flow. Second operand 22 states and 4680 transitions. [2022-09-16 11:27:42,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 337 transitions, 1309 flow [2022-09-16 11:27:42,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 337 transitions, 1282 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-09-16 11:27:42,914 INFO L231 Difference]: Finished difference. Result has 352 places, 317 transitions, 1065 flow [2022-09-16 11:27:42,915 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1065, PETRI_PLACES=352, PETRI_TRANSITIONS=317} [2022-09-16 11:27:42,915 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, 65 predicate places. [2022-09-16 11:27:42,915 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 317 transitions, 1065 flow [2022-09-16 11:27:42,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 209.76190476190476) internal successors, (4405), 21 states have internal predecessors, (4405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:42,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:42,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:42,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 11:27:42,917 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:42,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:42,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1787662284, now seen corresponding path program 2 times [2022-09-16 11:27:42,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:42,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837003482] [2022-09-16 11:27:42,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:42,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:43,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:43,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:43,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837003482] [2022-09-16 11:27:43,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837003482] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:43,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:43,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-16 11:27:43,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770596005] [2022-09-16 11:27:43,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:43,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:27:43,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:43,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:27:43,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:27:43,349 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 307 [2022-09-16 11:27:43,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 317 transitions, 1065 flow. Second operand has 18 states, 18 states have (on average 210.22222222222223) internal successors, (3784), 18 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:43,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:43,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 307 [2022-09-16 11:27:43,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:44,982 INFO L130 PetriNetUnfolder]: 1585/7513 cut-off events. [2022-09-16 11:27:44,982 INFO L131 PetriNetUnfolder]: For 1053/1056 co-relation queries the response was YES. [2022-09-16 11:27:45,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11753 conditions, 7513 events. 1585/7513 cut-off events. For 1053/1056 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 69224 event pairs, 773 based on Foata normal form. 3/6835 useless extension candidates. Maximal degree in co-relation 11723. Up to 2412 conditions per place. [2022-09-16 11:27:45,063 INFO L137 encePairwiseOnDemand]: 291/307 looper letters, 96 selfloop transitions, 26 changer transitions 0/324 dead transitions. [2022-09-16 11:27:45,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 324 transitions, 1326 flow [2022-09-16 11:27:45,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-16 11:27:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-16 11:27:45,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2997 transitions. [2022-09-16 11:27:45,067 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6973010702652397 [2022-09-16 11:27:45,067 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2997 transitions. [2022-09-16 11:27:45,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2997 transitions. [2022-09-16 11:27:45,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:45,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2997 transitions. [2022-09-16 11:27:45,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 214.07142857142858) internal successors, (2997), 14 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:45,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 307.0) internal successors, (4605), 15 states have internal predecessors, (4605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:45,076 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 307.0) internal successors, (4605), 15 states have internal predecessors, (4605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:45,076 INFO L175 Difference]: Start difference. First operand has 352 places, 317 transitions, 1065 flow. Second operand 14 states and 2997 transitions. [2022-09-16 11:27:45,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 324 transitions, 1326 flow [2022-09-16 11:27:45,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 324 transitions, 1253 flow, removed 5 selfloop flow, removed 22 redundant places. [2022-09-16 11:27:45,086 INFO L231 Difference]: Finished difference. Result has 341 places, 314 transitions, 1031 flow [2022-09-16 11:27:45,087 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1031, PETRI_PLACES=341, PETRI_TRANSITIONS=314} [2022-09-16 11:27:45,087 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, 54 predicate places. [2022-09-16 11:27:45,087 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 314 transitions, 1031 flow [2022-09-16 11:27:45,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 210.22222222222223) internal successors, (3784), 18 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:45,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:45,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:45,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:27:45,089 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:45,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:45,089 INFO L85 PathProgramCache]: Analyzing trace with hash 21270236, now seen corresponding path program 1 times [2022-09-16 11:27:45,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:45,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464126529] [2022-09-16 11:27:45,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:45,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:45,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:45,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:45,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464126529] [2022-09-16 11:27:45,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464126529] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:45,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:45,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-09-16 11:27:45,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26031783] [2022-09-16 11:27:45,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:45,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-09-16 11:27:45,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:45,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-09-16 11:27:45,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2022-09-16 11:27:45,997 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 307 [2022-09-16 11:27:46,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 314 transitions, 1031 flow. Second operand has 31 states, 31 states have (on average 197.0) internal successors, (6107), 31 states have internal predecessors, (6107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:46,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:46,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 307 [2022-09-16 11:27:46,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:49,728 INFO L130 PetriNetUnfolder]: 2615/10678 cut-off events. [2022-09-16 11:27:49,729 INFO L131 PetriNetUnfolder]: For 1510/1513 co-relation queries the response was YES. [2022-09-16 11:27:49,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17234 conditions, 10678 events. 2615/10678 cut-off events. For 1510/1513 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 103475 event pairs, 1940 based on Foata normal form. 2/9638 useless extension candidates. Maximal degree in co-relation 17211. Up to 3897 conditions per place. [2022-09-16 11:27:49,953 INFO L137 encePairwiseOnDemand]: 268/307 looper letters, 129 selfloop transitions, 68 changer transitions 0/382 dead transitions. [2022-09-16 11:27:49,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 382 transitions, 1704 flow [2022-09-16 11:27:49,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-09-16 11:27:49,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-09-16 11:27:49,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 7406 transitions. [2022-09-16 11:27:49,959 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6519940135575315 [2022-09-16 11:27:49,959 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 7406 transitions. [2022-09-16 11:27:49,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 7406 transitions. [2022-09-16 11:27:49,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:49,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 7406 transitions. [2022-09-16 11:27:49,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 200.16216216216216) internal successors, (7406), 37 states have internal predecessors, (7406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:49,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 307.0) internal successors, (11666), 38 states have internal predecessors, (11666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:49,980 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 307.0) internal successors, (11666), 38 states have internal predecessors, (11666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:49,980 INFO L175 Difference]: Start difference. First operand has 341 places, 314 transitions, 1031 flow. Second operand 37 states and 7406 transitions. [2022-09-16 11:27:49,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 382 transitions, 1704 flow [2022-09-16 11:27:49,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 382 transitions, 1652 flow, removed 0 selfloop flow, removed 13 redundant places. [2022-09-16 11:27:49,993 INFO L231 Difference]: Finished difference. Result has 379 places, 348 transitions, 1434 flow [2022-09-16 11:27:49,994 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1434, PETRI_PLACES=379, PETRI_TRANSITIONS=348} [2022-09-16 11:27:49,994 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, 92 predicate places. [2022-09-16 11:27:49,995 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 348 transitions, 1434 flow [2022-09-16 11:27:49,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 197.0) internal successors, (6107), 31 states have internal predecessors, (6107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:49,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:49,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:49,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-16 11:27:49,996 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:49,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:49,997 INFO L85 PathProgramCache]: Analyzing trace with hash 659378135, now seen corresponding path program 1 times [2022-09-16 11:27:49,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:49,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13182737] [2022-09-16 11:27:49,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:49,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:50,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:50,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:50,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13182737] [2022-09-16 11:27:50,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13182737] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:50,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:50,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:27:50,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823676352] [2022-09-16 11:27:50,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:50,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:27:50,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:50,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:27:50,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:27:50,438 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 307 [2022-09-16 11:27:50,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 348 transitions, 1434 flow. Second operand has 23 states, 23 states have (on average 210.65217391304347) internal successors, (4845), 23 states have internal predecessors, (4845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:50,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:50,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 307 [2022-09-16 11:27:50,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:56,487 INFO L130 PetriNetUnfolder]: 6057/20336 cut-off events. [2022-09-16 11:27:56,487 INFO L131 PetriNetUnfolder]: For 3349/3349 co-relation queries the response was YES. [2022-09-16 11:27:56,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36125 conditions, 20336 events. 6057/20336 cut-off events. For 3349/3349 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 207950 event pairs, 1081 based on Foata normal form. 124/18998 useless extension candidates. Maximal degree in co-relation 36087. Up to 2987 conditions per place. [2022-09-16 11:27:56,656 INFO L137 encePairwiseOnDemand]: 276/307 looper letters, 400 selfloop transitions, 141 changer transitions 0/741 dead transitions. [2022-09-16 11:27:56,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 741 transitions, 3615 flow [2022-09-16 11:27:56,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-09-16 11:27:56,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-09-16 11:27:56,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 8806 transitions. [2022-09-16 11:27:56,664 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.717100977198697 [2022-09-16 11:27:56,664 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 8806 transitions. [2022-09-16 11:27:56,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 8806 transitions. [2022-09-16 11:27:56,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:56,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 8806 transitions. [2022-09-16 11:27:56,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 220.15) internal successors, (8806), 40 states have internal predecessors, (8806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:56,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 307.0) internal successors, (12587), 41 states have internal predecessors, (12587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:56,686 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 307.0) internal successors, (12587), 41 states have internal predecessors, (12587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:56,686 INFO L175 Difference]: Start difference. First operand has 379 places, 348 transitions, 1434 flow. Second operand 40 states and 8806 transitions. [2022-09-16 11:27:56,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 741 transitions, 3615 flow [2022-09-16 11:27:56,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 741 transitions, 3348 flow, removed 88 selfloop flow, removed 19 redundant places. [2022-09-16 11:27:56,723 INFO L231 Difference]: Finished difference. Result has 410 places, 449 transitions, 2033 flow [2022-09-16 11:27:56,724 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2033, PETRI_PLACES=410, PETRI_TRANSITIONS=449} [2022-09-16 11:27:56,724 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, 123 predicate places. [2022-09-16 11:27:56,724 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 449 transitions, 2033 flow [2022-09-16 11:27:56,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 210.65217391304347) internal successors, (4845), 23 states have internal predecessors, (4845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:56,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:56,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:56,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-16 11:27:56,725 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:27:56,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:56,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2106305171, now seen corresponding path program 1 times [2022-09-16 11:27:56,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:56,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801413550] [2022-09-16 11:27:56,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:56,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:58,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:58,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:58,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801413550] [2022-09-16 11:27:58,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801413550] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:58,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:27:58,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-09-16 11:27:58,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776774850] [2022-09-16 11:27:58,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:58,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-09-16 11:27:58,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:58,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-09-16 11:27:58,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-09-16 11:27:58,101 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 307 [2022-09-16 11:27:58,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 449 transitions, 2033 flow. Second operand has 34 states, 34 states have (on average 186.11764705882354) internal successors, (6328), 34 states have internal predecessors, (6328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:58,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:58,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 307 [2022-09-16 11:27:58,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:04,986 INFO L130 PetriNetUnfolder]: 6933/22429 cut-off events. [2022-09-16 11:28:04,987 INFO L131 PetriNetUnfolder]: For 8464/8661 co-relation queries the response was YES. [2022-09-16 11:28:05,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44055 conditions, 22429 events. 6933/22429 cut-off events. For 8464/8661 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 234949 event pairs, 3533 based on Foata normal form. 24/20443 useless extension candidates. Maximal degree in co-relation 44008. Up to 10521 conditions per place. [2022-09-16 11:28:05,387 INFO L137 encePairwiseOnDemand]: 269/307 looper letters, 260 selfloop transitions, 87 changer transitions 0/535 dead transitions. [2022-09-16 11:28:05,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 535 transitions, 3046 flow [2022-09-16 11:28:05,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-09-16 11:28:05,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-09-16 11:28:05,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 7017 transitions. [2022-09-16 11:28:05,398 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.61774804120081 [2022-09-16 11:28:05,399 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 7017 transitions. [2022-09-16 11:28:05,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 7017 transitions. [2022-09-16 11:28:05,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:05,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 7017 transitions. [2022-09-16 11:28:05,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 189.64864864864865) internal successors, (7017), 37 states have internal predecessors, (7017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:05,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 307.0) internal successors, (11666), 38 states have internal predecessors, (11666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:05,436 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 307.0) internal successors, (11666), 38 states have internal predecessors, (11666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:05,436 INFO L175 Difference]: Start difference. First operand has 410 places, 449 transitions, 2033 flow. Second operand 37 states and 7017 transitions. [2022-09-16 11:28:05,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 535 transitions, 3046 flow [2022-09-16 11:28:05,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 535 transitions, 2956 flow, removed 38 selfloop flow, removed 7 redundant places. [2022-09-16 11:28:05,578 INFO L231 Difference]: Finished difference. Result has 450 places, 467 transitions, 2345 flow [2022-09-16 11:28:05,579 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=1949, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2345, PETRI_PLACES=450, PETRI_TRANSITIONS=467} [2022-09-16 11:28:05,579 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, 163 predicate places. [2022-09-16 11:28:05,579 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 467 transitions, 2345 flow [2022-09-16 11:28:05,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 186.11764705882354) internal successors, (6328), 34 states have internal predecessors, (6328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:05,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:05,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:05,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-16 11:28:05,581 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:28:05,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:05,581 INFO L85 PathProgramCache]: Analyzing trace with hash -443783048, now seen corresponding path program 1 times [2022-09-16 11:28:05,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:05,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944801262] [2022-09-16 11:28:05,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:05,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:06,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:06,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:06,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944801262] [2022-09-16 11:28:06,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944801262] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:28:06,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:28:06,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:28:06,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264228705] [2022-09-16 11:28:06,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:28:06,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:28:06,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:06,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:28:06,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:28:06,114 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 307 [2022-09-16 11:28:06,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 467 transitions, 2345 flow. Second operand has 23 states, 23 states have (on average 208.69565217391303) internal successors, (4800), 23 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:06,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:06,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 307 [2022-09-16 11:28:06,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:13,335 INFO L130 PetriNetUnfolder]: 7719/25616 cut-off events. [2022-09-16 11:28:13,337 INFO L131 PetriNetUnfolder]: For 12801/13079 co-relation queries the response was YES. [2022-09-16 11:28:13,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51346 conditions, 25616 events. 7719/25616 cut-off events. For 12801/13079 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 273371 event pairs, 1319 based on Foata normal form. 183/23777 useless extension candidates. Maximal degree in co-relation 51288. Up to 2909 conditions per place. [2022-09-16 11:28:13,628 INFO L137 encePairwiseOnDemand]: 278/307 looper letters, 412 selfloop transitions, 183 changer transitions 0/795 dead transitions. [2022-09-16 11:28:13,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 795 transitions, 4562 flow [2022-09-16 11:28:13,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-09-16 11:28:13,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-09-16 11:28:13,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 8473 transitions. [2022-09-16 11:28:13,633 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7076756034410757 [2022-09-16 11:28:13,633 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 8473 transitions. [2022-09-16 11:28:13,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 8473 transitions. [2022-09-16 11:28:13,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:13,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 8473 transitions. [2022-09-16 11:28:13,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 217.25641025641025) internal successors, (8473), 39 states have internal predecessors, (8473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:13,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 307.0) internal successors, (12280), 40 states have internal predecessors, (12280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:13,656 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 307.0) internal successors, (12280), 40 states have internal predecessors, (12280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:13,656 INFO L175 Difference]: Start difference. First operand has 450 places, 467 transitions, 2345 flow. Second operand 39 states and 8473 transitions. [2022-09-16 11:28:13,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 795 transitions, 4562 flow [2022-09-16 11:28:13,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 795 transitions, 4401 flow, removed 26 selfloop flow, removed 26 redundant places. [2022-09-16 11:28:13,754 INFO L231 Difference]: Finished difference. Result has 471 places, 533 transitions, 3133 flow [2022-09-16 11:28:13,755 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=2199, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3133, PETRI_PLACES=471, PETRI_TRANSITIONS=533} [2022-09-16 11:28:13,755 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, 184 predicate places. [2022-09-16 11:28:13,755 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 533 transitions, 3133 flow [2022-09-16 11:28:13,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 208.69565217391303) internal successors, (4800), 23 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:13,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:13,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:13,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-16 11:28:13,756 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:28:13,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:13,756 INFO L85 PathProgramCache]: Analyzing trace with hash 701951941, now seen corresponding path program 1 times [2022-09-16 11:28:13,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:13,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911015920] [2022-09-16 11:28:13,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:13,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:14,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:14,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:14,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911015920] [2022-09-16 11:28:14,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911015920] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:28:14,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:28:14,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-09-16 11:28:14,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961302167] [2022-09-16 11:28:14,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:28:14,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-16 11:28:14,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:14,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-16 11:28:14,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-09-16 11:28:14,419 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 307 [2022-09-16 11:28:14,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 533 transitions, 3133 flow. Second operand has 27 states, 27 states have (on average 211.22222222222223) internal successors, (5703), 27 states have internal predecessors, (5703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:14,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:14,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 307 [2022-09-16 11:28:14,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:22,507 INFO L130 PetriNetUnfolder]: 7723/27923 cut-off events. [2022-09-16 11:28:22,507 INFO L131 PetriNetUnfolder]: For 19218/19590 co-relation queries the response was YES. [2022-09-16 11:28:22,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56912 conditions, 27923 events. 7723/27923 cut-off events. For 19218/19590 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 311932 event pairs, 4604 based on Foata normal form. 66/25531 useless extension candidates. Maximal degree in co-relation 56846. Up to 9729 conditions per place. [2022-09-16 11:28:22,926 INFO L137 encePairwiseOnDemand]: 273/307 looper letters, 325 selfloop transitions, 114 changer transitions 0/714 dead transitions. [2022-09-16 11:28:22,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 714 transitions, 4825 flow [2022-09-16 11:28:22,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-09-16 11:28:22,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-09-16 11:28:22,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 7779 transitions. [2022-09-16 11:28:22,931 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7038545059717698 [2022-09-16 11:28:22,931 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 7779 transitions. [2022-09-16 11:28:22,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 7779 transitions. [2022-09-16 11:28:22,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:22,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 7779 transitions. [2022-09-16 11:28:22,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 216.08333333333334) internal successors, (7779), 36 states have internal predecessors, (7779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:22,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 307.0) internal successors, (11359), 37 states have internal predecessors, (11359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:22,952 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 307.0) internal successors, (11359), 37 states have internal predecessors, (11359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:22,952 INFO L175 Difference]: Start difference. First operand has 471 places, 533 transitions, 3133 flow. Second operand 36 states and 7779 transitions. [2022-09-16 11:28:22,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 714 transitions, 4825 flow [2022-09-16 11:28:23,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 714 transitions, 4740 flow, removed 23 selfloop flow, removed 9 redundant places. [2022-09-16 11:28:23,133 INFO L231 Difference]: Finished difference. Result has 509 places, 590 transitions, 3921 flow [2022-09-16 11:28:23,134 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=3053, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3921, PETRI_PLACES=509, PETRI_TRANSITIONS=590} [2022-09-16 11:28:23,135 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, 222 predicate places. [2022-09-16 11:28:23,135 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 590 transitions, 3921 flow [2022-09-16 11:28:23,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 211.22222222222223) internal successors, (5703), 27 states have internal predecessors, (5703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:23,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:23,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:23,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-16 11:28:23,136 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:28:23,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:23,137 INFO L85 PathProgramCache]: Analyzing trace with hash 285674528, now seen corresponding path program 1 times [2022-09-16 11:28:23,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:23,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852347859] [2022-09-16 11:28:23,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:23,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:23,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:23,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:23,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852347859] [2022-09-16 11:28:23,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852347859] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:28:23,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:28:23,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-09-16 11:28:23,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46286922] [2022-09-16 11:28:23,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:28:23,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-09-16 11:28:23,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:23,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-09-16 11:28:23,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-09-16 11:28:23,552 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 307 [2022-09-16 11:28:23,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 590 transitions, 3921 flow. Second operand has 22 states, 22 states have (on average 210.9090909090909) internal successors, (4640), 22 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:23,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:23,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 307 [2022-09-16 11:28:23,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:36,845 INFO L130 PetriNetUnfolder]: 13469/43042 cut-off events. [2022-09-16 11:28:36,845 INFO L131 PetriNetUnfolder]: For 35863/36280 co-relation queries the response was YES. [2022-09-16 11:28:37,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96962 conditions, 43042 events. 13469/43042 cut-off events. For 35863/36280 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 495320 event pairs, 1981 based on Foata normal form. 460/40973 useless extension candidates. Maximal degree in co-relation 96885. Up to 5227 conditions per place. [2022-09-16 11:28:37,841 INFO L137 encePairwiseOnDemand]: 272/307 looper letters, 488 selfloop transitions, 352 changer transitions 0/1088 dead transitions. [2022-09-16 11:28:37,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 1088 transitions, 7914 flow [2022-09-16 11:28:37,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-09-16 11:28:37,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-09-16 11:28:37,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 9236 transitions. [2022-09-16 11:28:37,849 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7163021560415698 [2022-09-16 11:28:37,849 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 9236 transitions. [2022-09-16 11:28:37,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 9236 transitions. [2022-09-16 11:28:37,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:37,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 9236 transitions. [2022-09-16 11:28:37,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 219.9047619047619) internal successors, (9236), 42 states have internal predecessors, (9236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:37,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 307.0) internal successors, (13201), 43 states have internal predecessors, (13201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:37,870 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 307.0) internal successors, (13201), 43 states have internal predecessors, (13201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:37,871 INFO L175 Difference]: Start difference. First operand has 509 places, 590 transitions, 3921 flow. Second operand 42 states and 9236 transitions. [2022-09-16 11:28:37,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 1088 transitions, 7914 flow [2022-09-16 11:28:38,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 1088 transitions, 7748 flow, removed 15 selfloop flow, removed 23 redundant places. [2022-09-16 11:28:38,253 INFO L231 Difference]: Finished difference. Result has 547 places, 784 transitions, 6606 flow [2022-09-16 11:28:38,254 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=3761, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=6606, PETRI_PLACES=547, PETRI_TRANSITIONS=784} [2022-09-16 11:28:38,255 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, 260 predicate places. [2022-09-16 11:28:38,255 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 784 transitions, 6606 flow [2022-09-16 11:28:38,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 210.9090909090909) internal successors, (4640), 22 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:38,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:38,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:28:38,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-16 11:28:38,256 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:28:38,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:38,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1947235606, now seen corresponding path program 1 times [2022-09-16 11:28:38,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:38,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525961539] [2022-09-16 11:28:38,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:38,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:39,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:39,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:39,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525961539] [2022-09-16 11:28:39,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525961539] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:28:39,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:28:39,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-09-16 11:28:39,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851076599] [2022-09-16 11:28:39,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:28:39,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-09-16 11:28:39,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:39,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-09-16 11:28:39,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812 [2022-09-16 11:28:39,283 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 307 [2022-09-16 11:28:39,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 784 transitions, 6606 flow. Second operand has 29 states, 29 states have (on average 200.41379310344828) internal successors, (5812), 29 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:39,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:39,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 307 [2022-09-16 11:28:39,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:00,656 INFO L130 PetriNetUnfolder]: 17088/57065 cut-off events. [2022-09-16 11:29:00,657 INFO L131 PetriNetUnfolder]: For 91688/93511 co-relation queries the response was YES. [2022-09-16 11:29:02,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144811 conditions, 57065 events. 17088/57065 cut-off events. For 91688/93511 co-relation queries the response was YES. Maximal size of possible extension queue 1142. Compared 712973 event pairs, 4457 based on Foata normal form. 479/53732 useless extension candidates. Maximal degree in co-relation 144717. Up to 16297 conditions per place. [2022-09-16 11:29:02,419 INFO L137 encePairwiseOnDemand]: 269/307 looper letters, 561 selfloop transitions, 278 changer transitions 0/1127 dead transitions. [2022-09-16 11:29:02,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 1127 transitions, 10968 flow [2022-09-16 11:29:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-09-16 11:29:02,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-09-16 11:29:02,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 7611 transitions. [2022-09-16 11:29:02,425 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6700413768817678 [2022-09-16 11:29:02,425 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 7611 transitions. [2022-09-16 11:29:02,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 7611 transitions. [2022-09-16 11:29:02,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:02,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 7611 transitions. [2022-09-16 11:29:02,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 205.7027027027027) internal successors, (7611), 37 states have internal predecessors, (7611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:02,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 307.0) internal successors, (11666), 38 states have internal predecessors, (11666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:02,442 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 307.0) internal successors, (11666), 38 states have internal predecessors, (11666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:02,442 INFO L175 Difference]: Start difference. First operand has 547 places, 784 transitions, 6606 flow. Second operand 37 states and 7611 transitions. [2022-09-16 11:29:02,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 1127 transitions, 10968 flow [2022-09-16 11:29:03,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 1127 transitions, 10726 flow, removed 114 selfloop flow, removed 7 redundant places. [2022-09-16 11:29:03,756 INFO L231 Difference]: Finished difference. Result has 588 places, 942 transitions, 9444 flow [2022-09-16 11:29:03,757 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=6478, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9444, PETRI_PLACES=588, PETRI_TRANSITIONS=942} [2022-09-16 11:29:03,757 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, 301 predicate places. [2022-09-16 11:29:03,757 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 942 transitions, 9444 flow [2022-09-16 11:29:03,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 200.41379310344828) internal successors, (5812), 29 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:03,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:03,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:29:03,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-16 11:29:03,759 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-09-16 11:29:03,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:03,759 INFO L85 PathProgramCache]: Analyzing trace with hash -665500156, now seen corresponding path program 2 times [2022-09-16 11:29:03,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:03,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506213180] [2022-09-16 11:29:03,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:03,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:04,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:04,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:04,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506213180] [2022-09-16 11:29:04,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506213180] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:04,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:04,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-09-16 11:29:04,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231460053] [2022-09-16 11:29:04,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:04,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-09-16 11:29:04,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:04,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-09-16 11:29:04,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2022-09-16 11:29:04,714 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 307 [2022-09-16 11:29:04,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 942 transitions, 9444 flow. Second operand has 34 states, 34 states have (on average 201.02941176470588) internal successors, (6835), 34 states have internal predecessors, (6835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:04,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:04,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 307 [2022-09-16 11:29:04,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand