/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/weaver/popl20-more-buffer-mult.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:57:38,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:57:38,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:57:38,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:57:38,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:57:38,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:57:38,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:57:38,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:57:38,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:57:38,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:57:38,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:57:38,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:57:38,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:57:38,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:57:38,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:57:38,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:57:38,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:57:38,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:57:38,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:57:38,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:57:38,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:57:38,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:57:38,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:57:38,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:57:38,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:57:38,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:57:38,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:57:38,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:57:38,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:57:38,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:57:38,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:57:38,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:57:38,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:57:38,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:57:38,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:57:38,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:57:38,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:57:38,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:57:38,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:57:38,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:57:38,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:57:38,178 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 11:57:38,198 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:57:38,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:57:38,201 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:57:38,202 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:57:38,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:57:38,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:57:38,202 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:57:38,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:57:38,202 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:57:38,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:57:38,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:57:38,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:57:38,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:57:38,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:57:38,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:57:38,204 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:57:38,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:57:38,204 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:57:38,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:57:38,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:57:38,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:57:38,204 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:57:38,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:57:38,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:57:38,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:57:38,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:57:38,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:57:38,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:57:38,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:57:38,205 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:57:38,206 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:57:38,206 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:57:38,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:57:38,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:57:38,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:57:38,413 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:57:38,414 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:57:38,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2022-09-16 11:57:38,481 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d3f8ed0d/1a2eec668c7b4de4a2b2121bb1f8acfa/FLAG792455102 [2022-09-16 11:57:38,791 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:57:38,792 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2022-09-16 11:57:38,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d3f8ed0d/1a2eec668c7b4de4a2b2121bb1f8acfa/FLAG792455102 [2022-09-16 11:57:39,215 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d3f8ed0d/1a2eec668c7b4de4a2b2121bb1f8acfa [2022-09-16 11:57:39,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:57:39,218 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:57:39,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:57:39,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:57:39,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:57:39,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:57:39" (1/1) ... [2022-09-16 11:57:39,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b9feeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:39, skipping insertion in model container [2022-09-16 11:57:39,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:57:39" (1/1) ... [2022-09-16 11:57:39,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:57:39,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:57:39,465 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2022-09-16 11:57:39,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:57:39,480 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:57:39,518 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2022-09-16 11:57:39,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:57:39,531 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:57:39,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:39 WrapperNode [2022-09-16 11:57:39,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:57:39,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:57:39,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:57:39,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:57:39,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:39" (1/1) ... [2022-09-16 11:57:39,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:39" (1/1) ... [2022-09-16 11:57:39,593 INFO L138 Inliner]: procedures = 27, calls = 80, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 353 [2022-09-16 11:57:39,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:57:39,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:57:39,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:57:39,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:57:39,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:39" (1/1) ... [2022-09-16 11:57:39,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:39" (1/1) ... [2022-09-16 11:57:39,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:39" (1/1) ... [2022-09-16 11:57:39,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:39" (1/1) ... [2022-09-16 11:57:39,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:39" (1/1) ... [2022-09-16 11:57:39,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:39" (1/1) ... [2022-09-16 11:57:39,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:39" (1/1) ... [2022-09-16 11:57:39,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:57:39,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:57:39,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:57:39,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:57:39,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:39" (1/1) ... [2022-09-16 11:57:39,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:57:39,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:57:39,721 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 11:57:39,749 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 11:57:39,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:57:39,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:57:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:57:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:57:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:57:39,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:57:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:57:39,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:57:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:57:39,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:57:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-16 11:57:39,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-16 11:57:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:57:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:57:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:57:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:57:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:57:39,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:57:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:57:39,797 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 11:57:39,878 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:57:39,879 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:57:40,213 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:57:40,564 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:57:40,565 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-09-16 11:57:40,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:57:40 BoogieIcfgContainer [2022-09-16 11:57:40,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:57:40,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:57:40,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:57:40,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:57:40,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:57:39" (1/3) ... [2022-09-16 11:57:40,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59da3295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:57:40, skipping insertion in model container [2022-09-16 11:57:40,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:39" (2/3) ... [2022-09-16 11:57:40,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59da3295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:57:40, skipping insertion in model container [2022-09-16 11:57:40,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:57:40" (3/3) ... [2022-09-16 11:57:40,574 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2022-09-16 11:57:40,589 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:57:40,589 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-09-16 11:57:40,589 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:57:40,729 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-16 11:57:40,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 264 transitions, 560 flow [2022-09-16 11:57:40,873 INFO L130 PetriNetUnfolder]: 18/260 cut-off events. [2022-09-16 11:57:40,873 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-16 11:57:40,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 260 events. 18/260 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 283 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 214. Up to 2 conditions per place. [2022-09-16 11:57:40,879 INFO L82 GeneralOperation]: Start removeDead. Operand has 259 places, 264 transitions, 560 flow [2022-09-16 11:57:40,885 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 237 transitions, 495 flow [2022-09-16 11:57:40,892 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:57:40,896 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;@16e894fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:57:40,897 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-09-16 11:57:40,905 INFO L130 PetriNetUnfolder]: 3/86 cut-off events. [2022-09-16 11:57:40,905 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:57:40,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:40,906 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] [2022-09-16 11:57:40,906 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:57:40,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:40,910 INFO L85 PathProgramCache]: Analyzing trace with hash -887821009, now seen corresponding path program 1 times [2022-09-16 11:57:40,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:40,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978841791] [2022-09-16 11:57:40,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:40,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:41,082 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 11:57:41,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:41,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978841791] [2022-09-16 11:57:41,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978841791] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:57:41,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:57:41,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:57:41,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119955387] [2022-09-16 11:57:41,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:57:41,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:57:41,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:41,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:57:41,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:57:41,112 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 264 [2022-09-16 11:57:41,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 237 transitions, 495 flow. Second operand has 4 states, 4 states have (on average 188.5) internal successors, (754), 4 states have internal predecessors, (754), 0 states have call successors, (0), 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 11:57:41,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:41,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 264 [2022-09-16 11:57:41,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:47,298 INFO L130 PetriNetUnfolder]: 26913/38741 cut-off events. [2022-09-16 11:57:47,298 INFO L131 PetriNetUnfolder]: For 6158/6162 co-relation queries the response was YES. [2022-09-16 11:57:47,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75426 conditions, 38741 events. 26913/38741 cut-off events. For 6158/6162 co-relation queries the response was YES. Maximal size of possible extension queue 2297. Compared 266723 event pairs, 15506 based on Foata normal form. 6014/20421 useless extension candidates. Maximal degree in co-relation 36997. Up to 16667 conditions per place. [2022-09-16 11:57:47,698 INFO L137 encePairwiseOnDemand]: 232/264 looper letters, 94 selfloop transitions, 9 changer transitions 5/266 dead transitions. [2022-09-16 11:57:47,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 266 transitions, 780 flow [2022-09-16 11:57:47,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:57:47,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:57:47,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1076 transitions. [2022-09-16 11:57:47,716 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8151515151515152 [2022-09-16 11:57:47,716 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1076 transitions. [2022-09-16 11:57:47,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1076 transitions. [2022-09-16 11:57:47,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:47,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1076 transitions. [2022-09-16 11:57:47,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 215.2) internal successors, (1076), 5 states have internal predecessors, (1076), 0 states have call successors, (0), 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 11:57:47,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 264.0) internal successors, (1584), 6 states have internal predecessors, (1584), 0 states have call successors, (0), 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 11:57:47,735 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 264.0) internal successors, (1584), 6 states have internal predecessors, (1584), 0 states have call successors, (0), 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 11:57:47,736 INFO L175 Difference]: Start difference. First operand has 233 places, 237 transitions, 495 flow. Second operand 5 states and 1076 transitions. [2022-09-16 11:57:47,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 266 transitions, 780 flow [2022-09-16 11:57:47,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 266 transitions, 754 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-16 11:57:47,764 INFO L231 Difference]: Finished difference. Result has 225 places, 220 transitions, 501 flow [2022-09-16 11:57:47,765 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=501, PETRI_PLACES=225, PETRI_TRANSITIONS=220} [2022-09-16 11:57:47,768 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, -8 predicate places. [2022-09-16 11:57:47,769 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 220 transitions, 501 flow [2022-09-16 11:57:47,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.5) internal successors, (754), 4 states have internal predecessors, (754), 0 states have call successors, (0), 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 11:57:47,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:47,770 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:57:47,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:57:47,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:57:47,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:47,771 INFO L85 PathProgramCache]: Analyzing trace with hash 200529100, now seen corresponding path program 1 times [2022-09-16 11:57:47,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:47,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911851720] [2022-09-16 11:57:47,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:47,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:47,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:47,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911851720] [2022-09-16 11:57:47,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911851720] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:57:47,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119944058] [2022-09-16 11:57:47,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:47,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:57:47,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:57:47,902 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 11:57:47,944 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 11:57:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:48,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:57:48,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:57:48,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:48,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:57:48,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:48,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119944058] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:57:48,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:57:48,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:57:48,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340025234] [2022-09-16 11:57:48,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:57:48,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:57:48,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:48,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:57:48,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:57:48,240 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 264 [2022-09-16 11:57:48,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 220 transitions, 501 flow. Second operand has 12 states, 12 states have (on average 189.66666666666666) internal successors, (2276), 12 states have internal predecessors, (2276), 0 states have call successors, (0), 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 11:57:48,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:48,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 264 [2022-09-16 11:57:48,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:02,721 INFO L130 PetriNetUnfolder]: 67281/96705 cut-off events. [2022-09-16 11:58:02,722 INFO L131 PetriNetUnfolder]: For 4507/4517 co-relation queries the response was YES. [2022-09-16 11:58:03,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183699 conditions, 96705 events. 67281/96705 cut-off events. For 4507/4517 co-relation queries the response was YES. Maximal size of possible extension queue 2427. Compared 692291 event pairs, 38765 based on Foata normal form. 6/35901 useless extension candidates. Maximal degree in co-relation 146740. Up to 16660 conditions per place. [2022-09-16 11:58:03,489 INFO L137 encePairwiseOnDemand]: 249/264 looper letters, 211 selfloop transitions, 40 changer transitions 0/409 dead transitions. [2022-09-16 11:58:03,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 409 transitions, 1463 flow [2022-09-16 11:58:03,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:58:03,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:58:03,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3623 transitions. [2022-09-16 11:58:03,495 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7624158249158249 [2022-09-16 11:58:03,495 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3623 transitions. [2022-09-16 11:58:03,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3623 transitions. [2022-09-16 11:58:03,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:03,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3623 transitions. [2022-09-16 11:58:03,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 201.27777777777777) internal successors, (3623), 18 states have internal predecessors, (3623), 0 states have call successors, (0), 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 11:58:03,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 264.0) internal successors, (5016), 19 states have internal predecessors, (5016), 0 states have call successors, (0), 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 11:58:03,515 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 264.0) internal successors, (5016), 19 states have internal predecessors, (5016), 0 states have call successors, (0), 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 11:58:03,515 INFO L175 Difference]: Start difference. First operand has 225 places, 220 transitions, 501 flow. Second operand 18 states and 3623 transitions. [2022-09-16 11:58:03,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 409 transitions, 1463 flow [2022-09-16 11:58:03,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 409 transitions, 1458 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:58:03,529 INFO L231 Difference]: Finished difference. Result has 240 places, 247 transitions, 734 flow [2022-09-16 11:58:03,529 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=734, PETRI_PLACES=240, PETRI_TRANSITIONS=247} [2022-09-16 11:58:03,530 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 7 predicate places. [2022-09-16 11:58:03,530 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 247 transitions, 734 flow [2022-09-16 11:58:03,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 189.66666666666666) internal successors, (2276), 12 states have internal predecessors, (2276), 0 states have call successors, (0), 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 11:58:03,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:03,532 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] [2022-09-16 11:58:03,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-16 11:58:03,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:03,750 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:58:03,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:03,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1921435688, now seen corresponding path program 1 times [2022-09-16 11:58:03,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:03,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387173612] [2022-09-16 11:58:03,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:03,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:03,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:03,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387173612] [2022-09-16 11:58:03,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387173612] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:03,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263584268] [2022-09-16 11:58:03,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:03,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:03,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:03,860 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 11:58:03,861 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 11:58:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:03,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:58:03,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:04,003 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:04,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:58:04,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263584268] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:04,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:58:04,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:58:04,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138989434] [2022-09-16 11:58:04,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:04,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:58:04,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:04,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:58:04,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:58:04,006 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 264 [2022-09-16 11:58:04,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 247 transitions, 734 flow. Second operand has 6 states, 6 states have (on average 189.33333333333334) internal successors, (1136), 6 states have internal predecessors, (1136), 0 states have call successors, (0), 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 11:58:04,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:04,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 264 [2022-09-16 11:58:04,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:18,224 INFO L130 PetriNetUnfolder]: 67281/96697 cut-off events. [2022-09-16 11:58:18,225 INFO L131 PetriNetUnfolder]: For 4601/4611 co-relation queries the response was YES. [2022-09-16 11:58:18,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183736 conditions, 96697 events. 67281/96697 cut-off events. For 4601/4611 co-relation queries the response was YES. Maximal size of possible extension queue 2426. Compared 691505 event pairs, 38765 based on Foata normal form. 8/35895 useless extension candidates. Maximal degree in co-relation 146962. Up to 66596 conditions per place. [2022-09-16 11:58:19,018 INFO L137 encePairwiseOnDemand]: 253/264 looper letters, 95 selfloop transitions, 27 changer transitions 0/280 dead transitions. [2022-09-16 11:58:19,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 280 transitions, 1018 flow [2022-09-16 11:58:19,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:58:19,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:58:19,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1412 transitions. [2022-09-16 11:58:19,021 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7640692640692641 [2022-09-16 11:58:19,021 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1412 transitions. [2022-09-16 11:58:19,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1412 transitions. [2022-09-16 11:58:19,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:19,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1412 transitions. [2022-09-16 11:58:19,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 201.71428571428572) internal successors, (1412), 7 states have internal predecessors, (1412), 0 states have call successors, (0), 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 11:58:19,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 264.0) internal successors, (2112), 8 states have internal predecessors, (2112), 0 states have call successors, (0), 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 11:58:19,027 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 264.0) internal successors, (2112), 8 states have internal predecessors, (2112), 0 states have call successors, (0), 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 11:58:19,027 INFO L175 Difference]: Start difference. First operand has 240 places, 247 transitions, 734 flow. Second operand 7 states and 1412 transitions. [2022-09-16 11:58:19,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 280 transitions, 1018 flow [2022-09-16 11:58:19,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 280 transitions, 944 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-09-16 11:58:19,036 INFO L231 Difference]: Finished difference. Result has 235 places, 239 transitions, 660 flow [2022-09-16 11:58:19,037 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=660, PETRI_PLACES=235, PETRI_TRANSITIONS=239} [2022-09-16 11:58:19,039 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 2 predicate places. [2022-09-16 11:58:19,039 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 239 transitions, 660 flow [2022-09-16 11:58:19,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.33333333333334) internal successors, (1136), 6 states have internal predecessors, (1136), 0 states have call successors, (0), 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 11:58:19,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:19,040 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:19,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-09-16 11:58:19,255 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,SelfDestructingSolverStorable2 [2022-09-16 11:58:19,256 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:58:19,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:19,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1379829359, now seen corresponding path program 2 times [2022-09-16 11:58:19,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:19,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033234684] [2022-09-16 11:58:19,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:19,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:19,369 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:19,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:19,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033234684] [2022-09-16 11:58:19,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033234684] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:19,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969408908] [2022-09-16 11:58:19,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:58:19,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:19,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:19,374 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:58:19,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:58:19,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:58:19,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:58:19,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:58:19,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:58:19,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:58:19,749 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:58:19,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969408908] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:58:19,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:58:19,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:58:19,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873772741] [2022-09-16 11:58:19,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:58:19,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:58:19,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:19,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:58:19,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:58:19,753 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 264 [2022-09-16 11:58:19,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 239 transitions, 660 flow. Second operand has 18 states, 18 states have (on average 175.61111111111111) internal successors, (3161), 18 states have internal predecessors, (3161), 0 states have call successors, (0), 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 11:58:19,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:19,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 264 [2022-09-16 11:58:19,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:34,539 INFO L130 PetriNetUnfolder]: 66907/99157 cut-off events. [2022-09-16 11:58:34,539 INFO L131 PetriNetUnfolder]: For 5530/5537 co-relation queries the response was YES. [2022-09-16 11:58:34,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186420 conditions, 99157 events. 66907/99157 cut-off events. For 5530/5537 co-relation queries the response was YES. Maximal size of possible extension queue 1798. Compared 731055 event pairs, 39109 based on Foata normal form. 4/41103 useless extension candidates. Maximal degree in co-relation 159474. Up to 11923 conditions per place. [2022-09-16 11:58:35,545 INFO L137 encePairwiseOnDemand]: 242/264 looper letters, 275 selfloop transitions, 65 changer transitions 0/483 dead transitions. [2022-09-16 11:58:35,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 483 transitions, 1935 flow [2022-09-16 11:58:35,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-09-16 11:58:35,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-09-16 11:58:35,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 8786 transitions. [2022-09-16 11:58:35,559 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6791898577612864 [2022-09-16 11:58:35,559 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 8786 transitions. [2022-09-16 11:58:35,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 8786 transitions. [2022-09-16 11:58:35,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:35,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 8786 transitions. [2022-09-16 11:58:35,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 179.30612244897958) internal successors, (8786), 49 states have internal predecessors, (8786), 0 states have call successors, (0), 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 11:58:35,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 264.0) internal successors, (13200), 50 states have internal predecessors, (13200), 0 states have call successors, (0), 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 11:58:35,597 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 264.0) internal successors, (13200), 50 states have internal predecessors, (13200), 0 states have call successors, (0), 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 11:58:35,598 INFO L175 Difference]: Start difference. First operand has 235 places, 239 transitions, 660 flow. Second operand 49 states and 8786 transitions. [2022-09-16 11:58:35,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 483 transitions, 1935 flow [2022-09-16 11:58:35,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 483 transitions, 1892 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:58:35,605 INFO L231 Difference]: Finished difference. Result has 279 places, 262 transitions, 871 flow [2022-09-16 11:58:35,605 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=871, PETRI_PLACES=279, PETRI_TRANSITIONS=262} [2022-09-16 11:58:35,606 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 46 predicate places. [2022-09-16 11:58:35,606 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 262 transitions, 871 flow [2022-09-16 11:58:35,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 175.61111111111111) internal successors, (3161), 18 states have internal predecessors, (3161), 0 states have call successors, (0), 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 11:58:35,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:35,607 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] [2022-09-16 11:58:35,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-09-16 11:58:35,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:35,827 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:58:35,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:35,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1116005035, now seen corresponding path program 1 times [2022-09-16 11:58:35,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:35,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091457531] [2022-09-16 11:58:35,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:35,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:35,910 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 11:58:35,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:35,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091457531] [2022-09-16 11:58:35,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091457531] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:35,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:58:35,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:58:35,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452513718] [2022-09-16 11:58:35,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:35,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:58:35,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:35,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:58:35,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:58:35,913 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 264 [2022-09-16 11:58:35,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 262 transitions, 871 flow. Second operand has 3 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 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 11:58:35,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:35,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 264 [2022-09-16 11:58:35,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:01,977 INFO L130 PetriNetUnfolder]: 102425/157194 cut-off events. [2022-09-16 11:59:01,977 INFO L131 PetriNetUnfolder]: For 7110/7110 co-relation queries the response was YES. [2022-09-16 11:59:02,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298421 conditions, 157194 events. 102425/157194 cut-off events. For 7110/7110 co-relation queries the response was YES. Maximal size of possible extension queue 3038. Compared 1394802 event pairs, 75390 based on Foata normal form. 0/74279 useless extension candidates. Maximal degree in co-relation 298131. Up to 83854 conditions per place. [2022-09-16 11:59:03,483 INFO L137 encePairwiseOnDemand]: 260/264 looper letters, 60 selfloop transitions, 2 changer transitions 0/290 dead transitions. [2022-09-16 11:59:03,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 290 transitions, 1058 flow [2022-09-16 11:59:03,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:59:03,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:59:03,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2022-09-16 11:59:03,492 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8611111111111112 [2022-09-16 11:59:03,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2022-09-16 11:59:03,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2022-09-16 11:59:03,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:03,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2022-09-16 11:59:03,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 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 11:59:03,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 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 11:59:03,508 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 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 11:59:03,508 INFO L175 Difference]: Start difference. First operand has 279 places, 262 transitions, 871 flow. Second operand 3 states and 682 transitions. [2022-09-16 11:59:03,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 290 transitions, 1058 flow [2022-09-16 11:59:03,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 290 transitions, 975 flow, removed 9 selfloop flow, removed 15 redundant places. [2022-09-16 11:59:03,513 INFO L231 Difference]: Finished difference. Result has 267 places, 263 transitions, 802 flow [2022-09-16 11:59:03,513 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=802, PETRI_PLACES=267, PETRI_TRANSITIONS=263} [2022-09-16 11:59:03,514 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 34 predicate places. [2022-09-16 11:59:03,514 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 263 transitions, 802 flow [2022-09-16 11:59:03,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 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 11:59:03,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:03,514 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:59:03,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:59:03,515 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:59:03,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:03,515 INFO L85 PathProgramCache]: Analyzing trace with hash 660288944, now seen corresponding path program 1 times [2022-09-16 11:59:03,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:03,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493461891] [2022-09-16 11:59:03,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:03,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:03,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:03,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493461891] [2022-09-16 11:59:03,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493461891] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:03,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:03,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:59:03,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746213006] [2022-09-16 11:59:03,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:03,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:59:03,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:03,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:59:03,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:59:03,741 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 264 [2022-09-16 11:59:03,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 263 transitions, 802 flow. Second operand has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 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 11:59:03,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:03,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 264 [2022-09-16 11:59:03,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand