/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 --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 17:01:20,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 17:01:20,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 17:01:20,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 17:01:20,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 17:01:20,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 17:01:20,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 17:01:20,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 17:01:20,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 17:01:20,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 17:01:20,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 17:01:20,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 17:01:20,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 17:01:20,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 17:01:20,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 17:01:20,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 17:01:20,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 17:01:20,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 17:01:20,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 17:01:20,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 17:01:20,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 17:01:20,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 17:01:20,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 17:01:20,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 17:01:20,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 17:01:20,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 17:01:20,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 17:01:20,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 17:01:20,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 17:01:20,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 17:01:20,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 17:01:20,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 17:01:20,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 17:01:20,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 17:01:20,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 17:01:20,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 17:01:20,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 17:01:20,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 17:01:20,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 17:01:20,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 17:01:20,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 17:01:20,207 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 [2022-12-06 17:01:20,227 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 17:01:20,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 17:01:20,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 17:01:20,229 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 17:01:20,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 17:01:20,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 17:01:20,231 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 17:01:20,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 17:01:20,231 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 17:01:20,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 17:01:20,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 17:01:20,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 17:01:20,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 17:01:20,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 17:01:20,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 17:01:20,232 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 17:01:20,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 17:01:20,233 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 17:01:20,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 17:01:20,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 17:01:20,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 17:01:20,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 17:01:20,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 17:01:20,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:01:20,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 17:01:20,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 17:01:20,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 17:01:20,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 17:01:20,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 17:01:20,234 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 17:01:20,234 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 17:01:20,235 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 17:01:20,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 17:01:20,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 17:01:20,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 17:01:20,560 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 17:01:20,560 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 17:01:20,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2022-12-06 17:01:21,692 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 17:01:21,889 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 17:01:21,890 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2022-12-06 17:01:21,896 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5d1da474/1ef9e976110342c09b032151582331f4/FLAG51f3281fc [2022-12-06 17:01:21,920 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5d1da474/1ef9e976110342c09b032151582331f4 [2022-12-06 17:01:21,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 17:01:21,924 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 17:01:21,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 17:01:21,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 17:01:21,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 17:01:21,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:01:21" (1/1) ... [2022-12-06 17:01:21,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@759a7bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:21, skipping insertion in model container [2022-12-06 17:01:21,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:01:21" (1/1) ... [2022-12-06 17:01:21,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 17:01:21,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 17:01:22,115 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c[2625,2638] [2022-12-06 17:01:22,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:01:22,126 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 17:01:22,166 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c[2625,2638] [2022-12-06 17:01:22,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:01:22,178 INFO L208 MainTranslator]: Completed translation [2022-12-06 17:01:22,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:22 WrapperNode [2022-12-06 17:01:22,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 17:01:22,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 17:01:22,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 17:01:22,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 17:01:22,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:22" (1/1) ... [2022-12-06 17:01:22,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:22" (1/1) ... [2022-12-06 17:01:22,236 INFO L138 Inliner]: procedures = 22, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 125 [2022-12-06 17:01:22,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 17:01:22,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 17:01:22,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 17:01:22,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 17:01:22,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:22" (1/1) ... [2022-12-06 17:01:22,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:22" (1/1) ... [2022-12-06 17:01:22,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:22" (1/1) ... [2022-12-06 17:01:22,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:22" (1/1) ... [2022-12-06 17:01:22,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:22" (1/1) ... [2022-12-06 17:01:22,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:22" (1/1) ... [2022-12-06 17:01:22,263 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:22" (1/1) ... [2022-12-06 17:01:22,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:22" (1/1) ... [2022-12-06 17:01:22,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 17:01:22,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 17:01:22,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 17:01:22,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 17:01:22,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:22" (1/1) ... [2022-12-06 17:01:22,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:01:22,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:01:22,310 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) [2022-12-06 17:01:22,338 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 [2022-12-06 17:01:22,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 17:01:22,355 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 17:01:22,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 17:01:22,355 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 17:01:22,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 17:01:22,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-06 17:01:22,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-06 17:01:22,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-06 17:01:22,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-06 17:01:22,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 17:01:22,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-06 17:01:22,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-06 17:01:22,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-12-06 17:01:22,358 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-12-06 17:01:22,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 17:01:22,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 17:01:22,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 17:01:22,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 17:01:22,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 17:01:22,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 17:01:22,360 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 17:01:22,513 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 17:01:22,515 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 17:01:22,778 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 17:01:22,786 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 17:01:22,786 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-06 17:01:22,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:01:22 BoogieIcfgContainer [2022-12-06 17:01:22,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 17:01:22,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 17:01:22,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 17:01:22,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 17:01:22,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:01:21" (1/3) ... [2022-12-06 17:01:22,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffc27c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:01:22, skipping insertion in model container [2022-12-06 17:01:22,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:22" (2/3) ... [2022-12-06 17:01:22,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffc27c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:01:22, skipping insertion in model container [2022-12-06 17:01:22,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:01:22" (3/3) ... [2022-12-06 17:01:22,811 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2022-12-06 17:01:22,842 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 17:01:22,842 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 17:01:22,842 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 17:01:22,938 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-12-06 17:01:22,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 162 transitions, 372 flow [2022-12-06 17:01:23,074 INFO L130 PetriNetUnfolder]: 14/156 cut-off events. [2022-12-06 17:01:23,074 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-06 17:01:23,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 156 events. 14/156 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 115. Up to 2 conditions per place. [2022-12-06 17:01:23,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 162 transitions, 372 flow [2022-12-06 17:01:23,089 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 140 transitions, 316 flow [2022-12-06 17:01:23,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 17:01:23,113 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;@db74b3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 17:01:23,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-06 17:01:23,171 INFO L130 PetriNetUnfolder]: 14/139 cut-off events. [2022-12-06 17:01:23,171 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-06 17:01:23,171 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:23,172 INFO L213 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] [2022-12-06 17:01:23,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-06 17:01:23,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:23,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1807468471, now seen corresponding path program 1 times [2022-12-06 17:01:23,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:23,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420118992] [2022-12-06 17:01:23,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:23,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:01:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:01:24,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:01:24,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420118992] [2022-12-06 17:01:24,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420118992] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:01:24,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:01:24,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 17:01:24,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536299900] [2022-12-06 17:01:24,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:01:24,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 17:01:24,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:01:24,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 17:01:24,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-06 17:01:24,689 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 162 [2022-12-06 17:01:24,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 140 transitions, 316 flow. Second operand has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:24,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:01:24,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 162 [2022-12-06 17:01:24,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:01:27,030 INFO L130 PetriNetUnfolder]: 13855/19791 cut-off events. [2022-12-06 17:01:27,030 INFO L131 PetriNetUnfolder]: For 2911/3093 co-relation queries the response was YES. [2022-12-06 17:01:27,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38774 conditions, 19791 events. 13855/19791 cut-off events. For 2911/3093 co-relation queries the response was YES. Maximal size of possible extension queue 1028. Compared 114029 event pairs, 8389 based on Foata normal form. 3/13756 useless extension candidates. Maximal degree in co-relation 29195. Up to 10952 conditions per place. [2022-12-06 17:01:27,248 INFO L137 encePairwiseOnDemand]: 140/162 looper letters, 69 selfloop transitions, 9 changer transitions 7/165 dead transitions. [2022-12-06 17:01:27,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 165 transitions, 569 flow [2022-12-06 17:01:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 17:01:27,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 17:01:27,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1010 transitions. [2022-12-06 17:01:27,263 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6927297668038409 [2022-12-06 17:01:27,266 INFO L294 CegarLoopForPetriNet]: 145 programPoint places, 8 predicate places. [2022-12-06 17:01:27,266 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 165 transitions, 569 flow [2022-12-06 17:01:27,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:27,267 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:27,267 INFO L213 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] [2022-12-06 17:01:27,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 17:01:27,268 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-06 17:01:27,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:27,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1757062664, now seen corresponding path program 1 times [2022-12-06 17:01:27,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:27,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372741418] [2022-12-06 17:01:27,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:27,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:01:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:01:27,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:01:27,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372741418] [2022-12-06 17:01:27,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372741418] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:01:27,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:01:27,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 17:01:27,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340903737] [2022-12-06 17:01:27,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:01:27,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:01:27,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:01:27,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:01:27,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:01:27,757 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 162 [2022-12-06 17:01:27,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 165 transitions, 569 flow. Second operand has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:27,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:01:27,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 162 [2022-12-06 17:01:27,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:01:29,891 INFO L130 PetriNetUnfolder]: 13532/20429 cut-off events. [2022-12-06 17:01:29,892 INFO L131 PetriNetUnfolder]: For 6166/167507 co-relation queries the response was YES. [2022-12-06 17:01:29,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55562 conditions, 20429 events. 13532/20429 cut-off events. For 6166/167507 co-relation queries the response was YES. Maximal size of possible extension queue 1057. Compared 130315 event pairs, 5150 based on Foata normal form. 7/14717 useless extension candidates. Maximal degree in co-relation 51492. Up to 10954 conditions per place. [2022-12-06 17:01:30,041 INFO L137 encePairwiseOnDemand]: 148/162 looper letters, 84 selfloop transitions, 17 changer transitions 7/186 dead transitions. [2022-12-06 17:01:30,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 186 transitions, 884 flow [2022-12-06 17:01:30,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 17:01:30,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 17:01:30,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 803 transitions. [2022-12-06 17:01:30,044 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7081128747795414 [2022-12-06 17:01:30,045 INFO L294 CegarLoopForPetriNet]: 145 programPoint places, 14 predicate places. [2022-12-06 17:01:30,045 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 186 transitions, 884 flow [2022-12-06 17:01:30,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:30,046 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:30,046 INFO L213 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] [2022-12-06 17:01:30,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 17:01:30,046 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-06 17:01:30,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:30,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1857428848, now seen corresponding path program 2 times [2022-12-06 17:01:30,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:30,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280138660] [2022-12-06 17:01:30,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:30,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:01:30,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:01:30,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:01:30,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280138660] [2022-12-06 17:01:30,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280138660] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:01:30,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:01:30,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 17:01:30,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398286606] [2022-12-06 17:01:30,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:01:30,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:01:30,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:01:30,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:01:30,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:01:30,421 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 162 [2022-12-06 17:01:30,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 186 transitions, 884 flow. Second operand has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:30,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:01:30,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 162 [2022-12-06 17:01:30,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:01:31,965 INFO L130 PetriNetUnfolder]: 11953/17361 cut-off events. [2022-12-06 17:01:31,966 INFO L131 PetriNetUnfolder]: For 9183/128969 co-relation queries the response was YES. [2022-12-06 17:01:32,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63020 conditions, 17361 events. 11953/17361 cut-off events. For 9183/128969 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 99390 event pairs, 5265 based on Foata normal form. 12/12205 useless extension candidates. Maximal degree in co-relation 47748. Up to 10239 conditions per place. [2022-12-06 17:01:32,117 INFO L137 encePairwiseOnDemand]: 148/162 looper letters, 99 selfloop transitions, 19 changer transitions 7/203 dead transitions. [2022-12-06 17:01:32,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 203 transitions, 1251 flow [2022-12-06 17:01:32,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 17:01:32,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 17:01:32,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 801 transitions. [2022-12-06 17:01:32,120 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7063492063492064 [2022-12-06 17:01:32,121 INFO L294 CegarLoopForPetriNet]: 145 programPoint places, 20 predicate places. [2022-12-06 17:01:32,121 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 203 transitions, 1251 flow [2022-12-06 17:01:32,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:32,122 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:32,122 INFO L213 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] [2022-12-06 17:01:32,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 17:01:32,122 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-06 17:01:32,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:32,123 INFO L85 PathProgramCache]: Analyzing trace with hash 66568182, now seen corresponding path program 1 times [2022-12-06 17:01:32,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:32,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447034898] [2022-12-06 17:01:32,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:32,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:01:32,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:01:32,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:01:32,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447034898] [2022-12-06 17:01:32,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447034898] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:01:32,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:01:32,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 17:01:32,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626645749] [2022-12-06 17:01:32,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:01:32,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:01:32,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:01:32,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:01:32,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:01:32,698 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 162 [2022-12-06 17:01:32,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 203 transitions, 1251 flow. Second operand has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:32,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:01:32,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 162 [2022-12-06 17:01:32,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:01:34,128 INFO L130 PetriNetUnfolder]: 11717/16189 cut-off events. [2022-12-06 17:01:34,129 INFO L131 PetriNetUnfolder]: For 11328/201911 co-relation queries the response was YES. [2022-12-06 17:01:34,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75475 conditions, 16189 events. 11717/16189 cut-off events. For 11328/201911 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 83790 event pairs, 1654 based on Foata normal form. 27/11611 useless extension candidates. Maximal degree in co-relation 56824. Up to 10239 conditions per place. [2022-12-06 17:01:34,270 INFO L137 encePairwiseOnDemand]: 148/162 looper letters, 133 selfloop transitions, 31 changer transitions 7/249 dead transitions. [2022-12-06 17:01:34,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 249 transitions, 1997 flow [2022-12-06 17:01:34,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 17:01:34,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 17:01:34,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 802 transitions. [2022-12-06 17:01:34,273 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7072310405643739 [2022-12-06 17:01:34,274 INFO L294 CegarLoopForPetriNet]: 145 programPoint places, 26 predicate places. [2022-12-06 17:01:34,274 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 249 transitions, 1997 flow [2022-12-06 17:01:34,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:34,275 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:34,275 INFO L213 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] [2022-12-06 17:01:34,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 17:01:34,275 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-06 17:01:34,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:34,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1594318944, now seen corresponding path program 2 times [2022-12-06 17:01:34,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:34,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916729462] [2022-12-06 17:01:34,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:34,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:01:34,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:01:34,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:01:34,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916729462] [2022-12-06 17:01:34,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916729462] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:01:34,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:01:34,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 17:01:34,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011747857] [2022-12-06 17:01:34,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:01:34,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:01:34,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:01:34,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:01:34,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:01:34,826 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 162 [2022-12-06 17:01:34,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 249 transitions, 1997 flow. Second operand has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:34,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:01:34,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 162 [2022-12-06 17:01:34,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:01:36,404 INFO L130 PetriNetUnfolder]: 10603/15760 cut-off events. [2022-12-06 17:01:36,404 INFO L131 PetriNetUnfolder]: For 20369/147351 co-relation queries the response was YES. [2022-12-06 17:01:36,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82411 conditions, 15760 events. 10603/15760 cut-off events. For 20369/147351 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 92235 event pairs, 3671 based on Foata normal form. 36/11333 useless extension candidates. Maximal degree in co-relation 62614. Up to 9750 conditions per place. [2022-12-06 17:01:36,657 INFO L137 encePairwiseOnDemand]: 148/162 looper letters, 169 selfloop transitions, 39 changer transitions 7/293 dead transitions. [2022-12-06 17:01:36,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 293 transitions, 2897 flow [2022-12-06 17:01:36,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 17:01:36,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 17:01:36,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 801 transitions. [2022-12-06 17:01:36,660 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7063492063492064 [2022-12-06 17:01:36,661 INFO L294 CegarLoopForPetriNet]: 145 programPoint places, 32 predicate places. [2022-12-06 17:01:36,661 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 293 transitions, 2897 flow [2022-12-06 17:01:36,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:36,662 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:36,662 INFO L213 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] [2022-12-06 17:01:36,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 17:01:36,662 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-06 17:01:36,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:36,663 INFO L85 PathProgramCache]: Analyzing trace with hash -172050016, now seen corresponding path program 3 times [2022-12-06 17:01:36,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:36,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473544308] [2022-12-06 17:01:36,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:36,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:01:37,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:01:37,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:01:37,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473544308] [2022-12-06 17:01:37,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473544308] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:01:37,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353164903] [2022-12-06 17:01:37,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 17:01:37,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:01:37,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:01:37,115 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) [2022-12-06 17:01:37,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 17:01:37,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-06 17:01:37,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:01:37,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-06 17:01:37,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:01:37,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:01:37,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:01:38,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:01:38,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353164903] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:01:38,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:01:38,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-12-06 17:01:38,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198276457] [2022-12-06 17:01:38,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:01:38,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 17:01:38,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:01:38,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 17:01:38,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-12-06 17:01:38,251 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 162 [2022-12-06 17:01:38,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 293 transitions, 2897 flow. Second operand has 14 states, 14 states have (on average 104.42857142857143) internal successors, (1462), 14 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:38,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:01:38,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 162 [2022-12-06 17:01:38,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:01:42,568 INFO L130 PetriNetUnfolder]: 24181/35914 cut-off events. [2022-12-06 17:01:42,568 INFO L131 PetriNetUnfolder]: For 55663/368363 co-relation queries the response was YES. [2022-12-06 17:01:42,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217402 conditions, 35914 events. 24181/35914 cut-off events. For 55663/368363 co-relation queries the response was YES. Maximal size of possible extension queue 1797. Compared 241562 event pairs, 4286 based on Foata normal form. 250/26415 useless extension candidates. Maximal degree in co-relation 164592. Up to 26359 conditions per place. [2022-12-06 17:01:42,933 INFO L137 encePairwiseOnDemand]: 144/162 looper letters, 291 selfloop transitions, 54 changer transitions 9/432 dead transitions. [2022-12-06 17:01:42,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 432 transitions, 5387 flow [2022-12-06 17:01:42,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-06 17:01:42,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-06 17:01:42,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2031 transitions. [2022-12-06 17:01:42,938 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6965020576131687 [2022-12-06 17:01:42,938 INFO L294 CegarLoopForPetriNet]: 145 programPoint places, 49 predicate places. [2022-12-06 17:01:42,939 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 432 transitions, 5387 flow [2022-12-06 17:01:42,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 104.42857142857143) internal successors, (1462), 14 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:42,940 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:42,940 INFO L213 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] [2022-12-06 17:01:42,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-06 17:01:43,146 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 [2022-12-06 17:01:43,147 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-06 17:01:43,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:43,147 INFO L85 PathProgramCache]: Analyzing trace with hash -714684542, now seen corresponding path program 1 times [2022-12-06 17:01:43,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:43,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427722103] [2022-12-06 17:01:43,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:43,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:01:43,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:01:43,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:01:43,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427722103] [2022-12-06 17:01:43,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427722103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:01:43,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:01:43,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 17:01:43,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428609307] [2022-12-06 17:01:43,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:01:43,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:01:43,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:01:43,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:01:43,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:01:43,676 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 162 [2022-12-06 17:01:43,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 432 transitions, 5387 flow. Second operand has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:43,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:01:43,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 162 [2022-12-06 17:01:43,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:01:47,058 INFO L130 PetriNetUnfolder]: 24035/34915 cut-off events. [2022-12-06 17:01:47,059 INFO L131 PetriNetUnfolder]: For 67766/379605 co-relation queries the response was YES. [2022-12-06 17:01:47,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244968 conditions, 34915 events. 24035/34915 cut-off events. For 67766/379605 co-relation queries the response was YES. Maximal size of possible extension queue 1637. Compared 223470 event pairs, 4284 based on Foata normal form. 122/25625 useless extension candidates. Maximal degree in co-relation 185676. Up to 26359 conditions per place. [2022-12-06 17:01:47,527 INFO L137 encePairwiseOnDemand]: 148/162 looper letters, 378 selfloop transitions, 63 changer transitions 9/528 dead transitions. [2022-12-06 17:01:47,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 528 transitions, 7685 flow [2022-12-06 17:01:47,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 17:01:47,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 17:01:47,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 802 transitions. [2022-12-06 17:01:47,530 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7072310405643739 [2022-12-06 17:01:47,531 INFO L294 CegarLoopForPetriNet]: 145 programPoint places, 55 predicate places. [2022-12-06 17:01:47,531 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 528 transitions, 7685 flow [2022-12-06 17:01:47,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:47,532 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:47,532 INFO L213 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] [2022-12-06 17:01:47,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-06 17:01:47,532 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-06 17:01:47,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:47,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1748977262, now seen corresponding path program 2 times [2022-12-06 17:01:47,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:47,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524488835] [2022-12-06 17:01:47,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:47,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:01:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:01:47,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:01:47,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524488835] [2022-12-06 17:01:47,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524488835] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:01:47,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734550548] [2022-12-06 17:01:47,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 17:01:47,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:01:47,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:01:47,903 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) [2022-12-06 17:01:47,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 17:01:48,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 17:01:48,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:01:48,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-06 17:01:48,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:01:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:01:48,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:01:48,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:01:48,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734550548] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:01:48,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:01:48,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-12-06 17:01:48,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774259716] [2022-12-06 17:01:48,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:01:48,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 17:01:48,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:01:48,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 17:01:48,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-12-06 17:01:48,748 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 162 [2022-12-06 17:01:48,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 528 transitions, 7685 flow. Second operand has 14 states, 14 states have (on average 104.71428571428571) internal successors, (1466), 14 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:48,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:01:48,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 162 [2022-12-06 17:01:48,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:01:58,291 INFO L130 PetriNetUnfolder]: 58640/86427 cut-off events. [2022-12-06 17:01:58,291 INFO L131 PetriNetUnfolder]: For 190684/1262728 co-relation queries the response was YES. [2022-12-06 17:01:58,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670483 conditions, 86427 events. 58640/86427 cut-off events. For 190684/1262728 co-relation queries the response was YES. Maximal size of possible extension queue 4249. Compared 642348 event pairs, 4066 based on Foata normal form. 492/65792 useless extension candidates. Maximal degree in co-relation 489906. Up to 68934 conditions per place. [2022-12-06 17:01:59,420 INFO L137 encePairwiseOnDemand]: 144/162 looper letters, 1032 selfloop transitions, 148 changer transitions 15/1273 dead transitions. [2022-12-06 17:01:59,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 1273 transitions, 22535 flow [2022-12-06 17:01:59,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-06 17:01:59,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-06 17:01:59,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2028 transitions. [2022-12-06 17:01:59,425 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6954732510288066 [2022-12-06 17:01:59,426 INFO L294 CegarLoopForPetriNet]: 145 programPoint places, 72 predicate places. [2022-12-06 17:01:59,426 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 1273 transitions, 22535 flow [2022-12-06 17:01:59,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 104.71428571428571) internal successors, (1466), 14 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:59,427 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:59,427 INFO L213 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] [2022-12-06 17:01:59,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-06 17:01:59,632 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,SelfDestructingSolverStorable7 [2022-12-06 17:01:59,633 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-06 17:01:59,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:59,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1963568056, now seen corresponding path program 1 times [2022-12-06 17:01:59,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:59,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197231081] [2022-12-06 17:01:59,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:59,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:00,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:02:00,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:02:00,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197231081] [2022-12-06 17:02:00,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197231081] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:02:00,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:02:00,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 17:02:00,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737744308] [2022-12-06 17:02:00,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:02:00,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:02:00,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:02:00,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:02:00,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:02:00,077 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 162 [2022-12-06 17:02:00,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 1273 transitions, 22535 flow. Second operand has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:00,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:02:00,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 162 [2022-12-06 17:02:00,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:02:11,979 INFO L130 PetriNetUnfolder]: 58020/83231 cut-off events. [2022-12-06 17:02:11,980 INFO L131 PetriNetUnfolder]: For 171355/3767131 co-relation queries the response was YES. [2022-12-06 17:02:12,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732357 conditions, 83231 events. 58020/83231 cut-off events. For 171355/3767131 co-relation queries the response was YES. Maximal size of possible extension queue 4160. Compared 592668 event pairs, 2566 based on Foata normal form. 629/63837 useless extension candidates. Maximal degree in co-relation 535992. Up to 68651 conditions per place. [2022-12-06 17:02:13,095 INFO L137 encePairwiseOnDemand]: 148/162 looper letters, 1183 selfloop transitions, 73 changer transitions 33/1367 dead transitions. [2022-12-06 17:02:13,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 1367 transitions, 26853 flow [2022-12-06 17:02:13,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 17:02:13,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 17:02:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 801 transitions. [2022-12-06 17:02:13,098 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7063492063492064 [2022-12-06 17:02:13,099 INFO L294 CegarLoopForPetriNet]: 145 programPoint places, 78 predicate places. [2022-12-06 17:02:13,099 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 1367 transitions, 26853 flow [2022-12-06 17:02:13,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:13,099 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:02:13,100 INFO L213 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] [2022-12-06 17:02:13,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-06 17:02:13,100 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-06 17:02:13,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:02:13,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1781849556, now seen corresponding path program 2 times [2022-12-06 17:02:13,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:02:13,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996817334] [2022-12-06 17:02:13,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:13,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:02:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:02:13,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:02:13,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996817334] [2022-12-06 17:02:13,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996817334] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:02:13,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:02:13,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 17:02:13,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776229928] [2022-12-06 17:02:13,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:02:13,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 17:02:13,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:02:13,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 17:02:13,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-06 17:02:13,458 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 162 [2022-12-06 17:02:13,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 1367 transitions, 26853 flow. Second operand has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:13,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:02:13,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 162 [2022-12-06 17:02:13,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand