/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 20:57:08,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 20:57:08,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 20:57:08,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 20:57:08,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 20:57:08,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 20:57:08,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 20:57:08,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 20:57:08,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 20:57:08,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 20:57:08,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 20:57:08,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 20:57:08,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 20:57:08,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 20:57:08,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 20:57:08,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 20:57:08,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 20:57:08,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 20:57:08,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 20:57:08,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 20:57:08,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 20:57:08,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 20:57:08,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 20:57:08,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 20:57:08,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 20:57:08,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 20:57:08,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 20:57:08,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 20:57:08,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 20:57:08,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 20:57:08,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 20:57:08,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 20:57:08,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 20:57:08,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 20:57:08,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 20:57:08,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 20:57:08,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 20:57:08,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 20:57:08,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 20:57:08,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 20:57:08,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 20:57:08,626 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-VariableLbe.epf [2023-01-27 20:57:08,644 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 20:57:08,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 20:57:08,649 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 20:57:08,649 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 20:57:08,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 20:57:08,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 20:57:08,650 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 20:57:08,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 20:57:08,650 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 20:57:08,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 20:57:08,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 20:57:08,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 20:57:08,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 20:57:08,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 20:57:08,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 20:57:08,651 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 20:57:08,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 20:57:08,651 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 20:57:08,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 20:57:08,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 20:57:08,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 20:57:08,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 20:57:08,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 20:57:08,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:57:08,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 20:57:08,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 20:57:08,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 20:57:08,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 20:57:08,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 20:57:08,653 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 20:57:08,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 20:57:08,653 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 20:57:08,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 20:57:08,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 20:57:08,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 20:57:08,834 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 20:57:08,834 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 20:57:08,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2023-01-27 20:57:09,826 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 20:57:09,984 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 20:57:09,984 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2023-01-27 20:57:09,990 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c526c698/2671aebed4ee4c649da129357bc04cf6/FLAG71d91d522 [2023-01-27 20:57:09,999 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c526c698/2671aebed4ee4c649da129357bc04cf6 [2023-01-27 20:57:10,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 20:57:10,002 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 20:57:10,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 20:57:10,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 20:57:10,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 20:57:10,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:57:10" (1/1) ... [2023-01-27 20:57:10,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3314a518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:57:10, skipping insertion in model container [2023-01-27 20:57:10,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:57:10" (1/1) ... [2023-01-27 20:57:10,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 20:57:10,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 20:57:10,120 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c[2950,2963] [2023-01-27 20:57:10,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:57:10,129 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 20:57:10,143 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c[2950,2963] [2023-01-27 20:57:10,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:57:10,149 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 20:57:10,149 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 20:57:10,154 INFO L208 MainTranslator]: Completed translation [2023-01-27 20:57:10,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:57:10 WrapperNode [2023-01-27 20:57:10,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 20:57:10,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 20:57:10,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 20:57:10,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 20:57:10,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:57:10" (1/1) ... [2023-01-27 20:57:10,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:57:10" (1/1) ... [2023-01-27 20:57:10,178 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2023-01-27 20:57:10,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 20:57:10,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 20:57:10,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 20:57:10,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 20:57:10,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:57:10" (1/1) ... [2023-01-27 20:57:10,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:57:10" (1/1) ... [2023-01-27 20:57:10,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:57:10" (1/1) ... [2023-01-27 20:57:10,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:57:10" (1/1) ... [2023-01-27 20:57:10,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:57:10" (1/1) ... [2023-01-27 20:57:10,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:57:10" (1/1) ... [2023-01-27 20:57:10,194 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:57:10" (1/1) ... [2023-01-27 20:57:10,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:57:10" (1/1) ... [2023-01-27 20:57:10,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 20:57:10,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 20:57:10,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 20:57:10,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 20:57:10,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:57:10" (1/1) ... [2023-01-27 20:57:10,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:57:10,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:57:10,220 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 20:57:10,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 20:57:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 20:57:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 20:57:10,247 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 20:57:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 20:57:10,247 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 20:57:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 20:57:10,247 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 20:57:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 20:57:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 20:57:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 20:57:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 20:57:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 20:57:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 20:57:10,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 20:57:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 20:57:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 20:57:10,249 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 20:57:10,312 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 20:57:10,313 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 20:57:10,447 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 20:57:10,464 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 20:57:10,464 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-27 20:57:10,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:57:10 BoogieIcfgContainer [2023-01-27 20:57:10,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 20:57:10,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 20:57:10,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 20:57:10,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 20:57:10,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 08:57:10" (1/3) ... [2023-01-27 20:57:10,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799c1270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:57:10, skipping insertion in model container [2023-01-27 20:57:10,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:57:10" (2/3) ... [2023-01-27 20:57:10,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799c1270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:57:10, skipping insertion in model container [2023-01-27 20:57:10,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:57:10" (3/3) ... [2023-01-27 20:57:10,470 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2023-01-27 20:57:10,481 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 20:57:10,481 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 20:57:10,481 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 20:57:10,549 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 20:57:10,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 103 transitions, 230 flow [2023-01-27 20:57:10,648 INFO L130 PetriNetUnfolder]: 7/100 cut-off events. [2023-01-27 20:57:10,648 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:57:10,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 100 events. 7/100 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2023-01-27 20:57:10,660 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 103 transitions, 230 flow [2023-01-27 20:57:10,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 90 transitions, 198 flow [2023-01-27 20:57:10,665 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 20:57:10,671 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 90 transitions, 198 flow [2023-01-27 20:57:10,672 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 90 transitions, 198 flow [2023-01-27 20:57:10,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 90 transitions, 198 flow [2023-01-27 20:57:10,698 INFO L130 PetriNetUnfolder]: 7/90 cut-off events. [2023-01-27 20:57:10,698 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:57:10,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 90 events. 7/90 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2023-01-27 20:57:10,699 INFO L119 LiptonReduction]: Number of co-enabled transitions 1134 [2023-01-27 20:57:12,592 INFO L134 LiptonReduction]: Checked pairs total: 1280 [2023-01-27 20:57:12,592 INFO L136 LiptonReduction]: Total number of compositions: 73 [2023-01-27 20:57:12,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 20:57:12,606 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;@68d89e97, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 20:57:12,606 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 20:57:12,610 INFO L130 PetriNetUnfolder]: 2/21 cut-off events. [2023-01-27 20:57:12,610 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:57:12,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:57:12,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:57:12,611 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 1 more)] === [2023-01-27 20:57:12,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:57:12,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1669197162, now seen corresponding path program 1 times [2023-01-27 20:57:12,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:57:12,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081879831] [2023-01-27 20:57:12,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:12,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:57:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:13,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:13,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:57:13,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081879831] [2023-01-27 20:57:13,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081879831] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:57:13,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:57:13,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:57:13,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820446142] [2023-01-27 20:57:13,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:57:13,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:57:13,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:57:13,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:57:13,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:57:13,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-01-27 20:57:13,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:13,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:57:13,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-01-27 20:57:13,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:57:13,334 INFO L130 PetriNetUnfolder]: 433/696 cut-off events. [2023-01-27 20:57:13,334 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-01-27 20:57:13,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 696 events. 433/696 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2652 event pairs, 74 based on Foata normal form. 0/578 useless extension candidates. Maximal degree in co-relation 1212. Up to 359 conditions per place. [2023-01-27 20:57:13,342 INFO L137 encePairwiseOnDemand]: 169/176 looper letters, 55 selfloop transitions, 5 changer transitions 22/82 dead transitions. [2023-01-27 20:57:13,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 82 transitions, 382 flow [2023-01-27 20:57:13,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:57:13,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:57:13,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 623 transitions. [2023-01-27 20:57:13,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056818181818182 [2023-01-27 20:57:13,361 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 623 transitions. [2023-01-27 20:57:13,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 623 transitions. [2023-01-27 20:57:13,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:57:13,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 623 transitions. [2023-01-27 20:57:13,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.0) internal successors, (623), 7 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) [2023-01-27 20:57:13,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 176.0) internal successors, (1408), 8 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:13,374 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 176.0) internal successors, (1408), 8 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:13,375 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 62 flow. Second operand 7 states and 623 transitions. [2023-01-27 20:57:13,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 82 transitions, 382 flow [2023-01-27 20:57:13,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 82 transitions, 346 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 20:57:13,382 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 99 flow [2023-01-27 20:57:13,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=99, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-01-27 20:57:13,385 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-01-27 20:57:13,385 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 99 flow [2023-01-27 20:57:13,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:13,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:57:13,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:57:13,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 20:57:13,387 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 1 more)] === [2023-01-27 20:57:13,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:57:13,389 INFO L85 PathProgramCache]: Analyzing trace with hash 550478170, now seen corresponding path program 2 times [2023-01-27 20:57:13,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:57:13,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986077363] [2023-01-27 20:57:13,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:13,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:57:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:13,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:13,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:57:13,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986077363] [2023-01-27 20:57:13,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986077363] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:57:13,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:57:13,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:57:13,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681821982] [2023-01-27 20:57:13,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:57:13,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:57:13,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:57:13,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:57:13,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:57:13,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 176 [2023-01-27 20:57:13,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:13,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:57:13,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 176 [2023-01-27 20:57:13,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:57:13,861 INFO L130 PetriNetUnfolder]: 260/443 cut-off events. [2023-01-27 20:57:13,861 INFO L131 PetriNetUnfolder]: For 504/504 co-relation queries the response was YES. [2023-01-27 20:57:13,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 443 events. 260/443 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1570 event pairs, 21 based on Foata normal form. 32/475 useless extension candidates. Maximal degree in co-relation 940. Up to 239 conditions per place. [2023-01-27 20:57:13,863 INFO L137 encePairwiseOnDemand]: 172/176 looper letters, 40 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2023-01-27 20:57:13,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 280 flow [2023-01-27 20:57:13,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:57:13,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:57:13,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2023-01-27 20:57:13,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5184659090909091 [2023-01-27 20:57:13,865 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 365 transitions. [2023-01-27 20:57:13,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 365 transitions. [2023-01-27 20:57:13,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:57:13,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 365 transitions. [2023-01-27 20:57:13,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:13,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:13,867 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:13,867 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 99 flow. Second operand 4 states and 365 transitions. [2023-01-27 20:57:13,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 280 flow [2023-01-27 20:57:13,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 46 transitions, 265 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-27 20:57:13,870 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 124 flow [2023-01-27 20:57:13,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-01-27 20:57:13,871 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-01-27 20:57:13,871 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 124 flow [2023-01-27 20:57:13,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:13,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:57:13,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:57:13,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 20:57:13,872 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 1 more)] === [2023-01-27 20:57:13,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:57:13,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1382764458, now seen corresponding path program 3 times [2023-01-27 20:57:13,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:57:13,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059827590] [2023-01-27 20:57:13,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:13,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:57:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:14,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:14,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:57:14,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059827590] [2023-01-27 20:57:14,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059827590] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:57:14,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:57:14,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:57:14,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589599819] [2023-01-27 20:57:14,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:57:14,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:57:14,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:57:14,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:57:14,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:57:14,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 176 [2023-01-27 20:57:14,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:14,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:57:14,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 176 [2023-01-27 20:57:14,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:57:14,198 INFO L130 PetriNetUnfolder]: 215/378 cut-off events. [2023-01-27 20:57:14,198 INFO L131 PetriNetUnfolder]: For 445/445 co-relation queries the response was YES. [2023-01-27 20:57:14,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1216 conditions, 378 events. 215/378 cut-off events. For 445/445 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1259 event pairs, 37 based on Foata normal form. 20/398 useless extension candidates. Maximal degree in co-relation 923. Up to 229 conditions per place. [2023-01-27 20:57:14,200 INFO L137 encePairwiseOnDemand]: 172/176 looper letters, 36 selfloop transitions, 7 changer transitions 2/45 dead transitions. [2023-01-27 20:57:14,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 45 transitions, 293 flow [2023-01-27 20:57:14,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:57:14,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:57:14,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 361 transitions. [2023-01-27 20:57:14,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127840909090909 [2023-01-27 20:57:14,201 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 361 transitions. [2023-01-27 20:57:14,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 361 transitions. [2023-01-27 20:57:14,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:57:14,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 361 transitions. [2023-01-27 20:57:14,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:14,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:14,203 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:14,203 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 124 flow. Second operand 4 states and 361 transitions. [2023-01-27 20:57:14,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 45 transitions, 293 flow [2023-01-27 20:57:14,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:57:14,207 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 156 flow [2023-01-27 20:57:14,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2023-01-27 20:57:14,208 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2023-01-27 20:57:14,210 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 156 flow [2023-01-27 20:57:14,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:14,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:57:14,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:57:14,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 20:57:14,211 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 1 more)] === [2023-01-27 20:57:14,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:57:14,212 INFO L85 PathProgramCache]: Analyzing trace with hash -762312740, now seen corresponding path program 4 times [2023-01-27 20:57:14,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:57:14,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581364661] [2023-01-27 20:57:14,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:14,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:57:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:14,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:14,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:57:14,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581364661] [2023-01-27 20:57:14,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581364661] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:57:14,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:57:14,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:57:14,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993948410] [2023-01-27 20:57:14,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:57:14,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:57:14,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:57:14,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:57:14,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:57:14,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 176 [2023-01-27 20:57:14,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:14,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:57:14,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 176 [2023-01-27 20:57:14,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:57:14,481 INFO L130 PetriNetUnfolder]: 221/380 cut-off events. [2023-01-27 20:57:14,482 INFO L131 PetriNetUnfolder]: For 733/733 co-relation queries the response was YES. [2023-01-27 20:57:14,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 380 events. 221/380 cut-off events. For 733/733 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1257 event pairs, 25 based on Foata normal form. 12/392 useless extension candidates. Maximal degree in co-relation 976. Up to 152 conditions per place. [2023-01-27 20:57:14,484 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 42 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2023-01-27 20:57:14,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 364 flow [2023-01-27 20:57:14,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:57:14,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:57:14,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-01-27 20:57:14,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2023-01-27 20:57:14,485 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-01-27 20:57:14,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-01-27 20:57:14,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:57:14,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-01-27 20:57:14,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:14,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 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) [2023-01-27 20:57:14,491 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 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) [2023-01-27 20:57:14,491 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 156 flow. Second operand 5 states and 450 transitions. [2023-01-27 20:57:14,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 364 flow [2023-01-27 20:57:14,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 350 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-27 20:57:14,493 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 202 flow [2023-01-27 20:57:14,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-01-27 20:57:14,495 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2023-01-27 20:57:14,495 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 202 flow [2023-01-27 20:57:14,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:14,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:57:14,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:57:14,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 20:57:14,495 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 1 more)] === [2023-01-27 20:57:14,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:57:14,496 INFO L85 PathProgramCache]: Analyzing trace with hash 366060416, now seen corresponding path program 5 times [2023-01-27 20:57:14,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:57:14,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684891453] [2023-01-27 20:57:14,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:14,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:57:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:14,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:14,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:57:14,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684891453] [2023-01-27 20:57:14,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684891453] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:57:14,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:57:14,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:57:14,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817750745] [2023-01-27 20:57:14,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:57:14,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:57:14,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:57:14,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:57:14,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:57:14,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-01-27 20:57:14,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:14,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:57:14,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-01-27 20:57:14,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:57:14,691 INFO L130 PetriNetUnfolder]: 211/348 cut-off events. [2023-01-27 20:57:14,691 INFO L131 PetriNetUnfolder]: For 950/950 co-relation queries the response was YES. [2023-01-27 20:57:14,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1362 conditions, 348 events. 211/348 cut-off events. For 950/950 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1100 event pairs, 25 based on Foata normal form. 10/358 useless extension candidates. Maximal degree in co-relation 981. Up to 246 conditions per place. [2023-01-27 20:57:14,719 INFO L137 encePairwiseOnDemand]: 169/176 looper letters, 34 selfloop transitions, 3 changer transitions 18/55 dead transitions. [2023-01-27 20:57:14,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 55 transitions, 416 flow [2023-01-27 20:57:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:57:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:57:14,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 589 transitions. [2023-01-27 20:57:14,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780844155844156 [2023-01-27 20:57:14,721 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 589 transitions. [2023-01-27 20:57:14,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 589 transitions. [2023-01-27 20:57:14,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:57:14,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 589 transitions. [2023-01-27 20:57:14,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.14285714285714) internal successors, (589), 7 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:14,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 176.0) internal successors, (1408), 8 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:14,724 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 176.0) internal successors, (1408), 8 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:14,724 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 202 flow. Second operand 7 states and 589 transitions. [2023-01-27 20:57:14,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 55 transitions, 416 flow [2023-01-27 20:57:14,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 55 transitions, 406 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 20:57:14,738 INFO L231 Difference]: Finished difference. Result has 52 places, 30 transitions, 168 flow [2023-01-27 20:57:14,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=168, PETRI_PLACES=52, PETRI_TRANSITIONS=30} [2023-01-27 20:57:14,739 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2023-01-27 20:57:14,739 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 30 transitions, 168 flow [2023-01-27 20:57:14,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:14,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:57:14,740 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] [2023-01-27 20:57:14,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 20:57:14,740 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 1 more)] === [2023-01-27 20:57:14,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:57:14,740 INFO L85 PathProgramCache]: Analyzing trace with hash 877823779, now seen corresponding path program 1 times [2023-01-27 20:57:14,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:57:14,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370407771] [2023-01-27 20:57:14,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:14,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:57:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:14,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:14,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:57:14,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370407771] [2023-01-27 20:57:14,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370407771] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:57:14,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:57:14,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 20:57:14,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527301713] [2023-01-27 20:57:14,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:57:14,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:57:14,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:57:14,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:57:14,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:57:14,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 176 [2023-01-27 20:57:14,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 30 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:14,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:57:14,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 176 [2023-01-27 20:57:14,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:57:15,042 INFO L130 PetriNetUnfolder]: 335/554 cut-off events. [2023-01-27 20:57:15,042 INFO L131 PetriNetUnfolder]: For 1326/1326 co-relation queries the response was YES. [2023-01-27 20:57:15,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 554 events. 335/554 cut-off events. For 1326/1326 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1992 event pairs, 14 based on Foata normal form. 16/570 useless extension candidates. Maximal degree in co-relation 2112. Up to 191 conditions per place. [2023-01-27 20:57:15,046 INFO L137 encePairwiseOnDemand]: 168/176 looper letters, 76 selfloop transitions, 34 changer transitions 0/110 dead transitions. [2023-01-27 20:57:15,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 110 transitions, 835 flow [2023-01-27 20:57:15,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:57:15,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:57:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 807 transitions. [2023-01-27 20:57:15,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509469696969697 [2023-01-27 20:57:15,048 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 807 transitions. [2023-01-27 20:57:15,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 807 transitions. [2023-01-27 20:57:15,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:57:15,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 807 transitions. [2023-01-27 20:57:15,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 89.66666666666667) internal successors, (807), 9 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:15,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:15,052 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:15,052 INFO L175 Difference]: Start difference. First operand has 52 places, 30 transitions, 168 flow. Second operand 9 states and 807 transitions. [2023-01-27 20:57:15,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 110 transitions, 835 flow [2023-01-27 20:57:15,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 110 transitions, 779 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-01-27 20:57:15,056 INFO L231 Difference]: Finished difference. Result has 55 places, 59 transitions, 507 flow [2023-01-27 20:57:15,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=507, PETRI_PLACES=55, PETRI_TRANSITIONS=59} [2023-01-27 20:57:15,057 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2023-01-27 20:57:15,057 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 59 transitions, 507 flow [2023-01-27 20:57:15,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:15,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:57:15,057 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] [2023-01-27 20:57:15,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 20:57:15,058 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 1 more)] === [2023-01-27 20:57:15,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:57:15,058 INFO L85 PathProgramCache]: Analyzing trace with hash -960778785, now seen corresponding path program 2 times [2023-01-27 20:57:15,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:57:15,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268188871] [2023-01-27 20:57:15,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:15,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:57:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:15,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:57:15,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268188871] [2023-01-27 20:57:15,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268188871] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:57:15,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:57:15,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 20:57:15,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430805365] [2023-01-27 20:57:15,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:57:15,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:57:15,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:57:15,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:57:15,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:57:15,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 176 [2023-01-27 20:57:15,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 59 transitions, 507 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:15,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:57:15,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 176 [2023-01-27 20:57:15,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:57:15,378 INFO L130 PetriNetUnfolder]: 483/856 cut-off events. [2023-01-27 20:57:15,379 INFO L131 PetriNetUnfolder]: For 5283/5283 co-relation queries the response was YES. [2023-01-27 20:57:15,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4418 conditions, 856 events. 483/856 cut-off events. For 5283/5283 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3629 event pairs, 39 based on Foata normal form. 20/876 useless extension candidates. Maximal degree in co-relation 3390. Up to 303 conditions per place. [2023-01-27 20:57:15,384 INFO L137 encePairwiseOnDemand]: 167/176 looper letters, 98 selfloop transitions, 61 changer transitions 0/159 dead transitions. [2023-01-27 20:57:15,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 159 transitions, 1568 flow [2023-01-27 20:57:15,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:57:15,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:57:15,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 814 transitions. [2023-01-27 20:57:15,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2023-01-27 20:57:15,386 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 814 transitions. [2023-01-27 20:57:15,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 814 transitions. [2023-01-27 20:57:15,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:57:15,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 814 transitions. [2023-01-27 20:57:15,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 90.44444444444444) internal successors, (814), 9 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:15,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:15,389 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:15,390 INFO L175 Difference]: Start difference. First operand has 55 places, 59 transitions, 507 flow. Second operand 9 states and 814 transitions. [2023-01-27 20:57:15,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 159 transitions, 1568 flow [2023-01-27 20:57:15,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 159 transitions, 1550 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-01-27 20:57:15,399 INFO L231 Difference]: Finished difference. Result has 71 places, 99 transitions, 1193 flow [2023-01-27 20:57:15,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1193, PETRI_PLACES=71, PETRI_TRANSITIONS=99} [2023-01-27 20:57:15,400 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2023-01-27 20:57:15,400 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 99 transitions, 1193 flow [2023-01-27 20:57:15,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:15,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:57:15,400 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] [2023-01-27 20:57:15,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 20:57:15,401 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 1 more)] === [2023-01-27 20:57:15,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:57:15,401 INFO L85 PathProgramCache]: Analyzing trace with hash -602311999, now seen corresponding path program 3 times [2023-01-27 20:57:15,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:57:15,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550597258] [2023-01-27 20:57:15,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:15,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:57:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:15,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:15,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:57:15,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550597258] [2023-01-27 20:57:15,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550597258] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:57:15,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:57:15,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 20:57:15,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68749926] [2023-01-27 20:57:15,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:57:15,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:57:15,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:57:15,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:57:15,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:57:15,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 176 [2023-01-27 20:57:15,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 99 transitions, 1193 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:15,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:57:15,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 176 [2023-01-27 20:57:15,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:57:15,671 INFO L130 PetriNetUnfolder]: 568/983 cut-off events. [2023-01-27 20:57:15,671 INFO L131 PetriNetUnfolder]: For 11208/11208 co-relation queries the response was YES. [2023-01-27 20:57:15,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6248 conditions, 983 events. 568/983 cut-off events. For 11208/11208 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4232 event pairs, 8 based on Foata normal form. 40/1023 useless extension candidates. Maximal degree in co-relation 5213. Up to 472 conditions per place. [2023-01-27 20:57:15,676 INFO L137 encePairwiseOnDemand]: 167/176 looper letters, 97 selfloop transitions, 42 changer transitions 35/174 dead transitions. [2023-01-27 20:57:15,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 174 transitions, 2309 flow [2023-01-27 20:57:15,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:57:15,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:57:15,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 790 transitions. [2023-01-27 20:57:15,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49873737373737376 [2023-01-27 20:57:15,678 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 790 transitions. [2023-01-27 20:57:15,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 790 transitions. [2023-01-27 20:57:15,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:57:15,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 790 transitions. [2023-01-27 20:57:15,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.77777777777777) internal successors, (790), 9 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:15,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:15,683 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:15,683 INFO L175 Difference]: Start difference. First operand has 71 places, 99 transitions, 1193 flow. Second operand 9 states and 790 transitions. [2023-01-27 20:57:15,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 174 transitions, 2309 flow [2023-01-27 20:57:15,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 174 transitions, 2191 flow, removed 59 selfloop flow, removed 0 redundant places. [2023-01-27 20:57:15,703 INFO L231 Difference]: Finished difference. Result has 85 places, 104 transitions, 1387 flow [2023-01-27 20:57:15,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1387, PETRI_PLACES=85, PETRI_TRANSITIONS=104} [2023-01-27 20:57:15,705 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2023-01-27 20:57:15,705 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 104 transitions, 1387 flow [2023-01-27 20:57:15,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:15,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:57:15,706 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] [2023-01-27 20:57:15,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 20:57:15,706 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 1 more)] === [2023-01-27 20:57:15,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:57:15,706 INFO L85 PathProgramCache]: Analyzing trace with hash 2082278653, now seen corresponding path program 4 times [2023-01-27 20:57:15,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:57:15,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834728689] [2023-01-27 20:57:15,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:15,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:57:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:16,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:57:16,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834728689] [2023-01-27 20:57:16,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834728689] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:57:16,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:57:16,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 20:57:16,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132671204] [2023-01-27 20:57:16,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:57:16,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:57:16,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:57:16,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:57:16,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:57:16,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 176 [2023-01-27 20:57:16,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 104 transitions, 1387 flow. Second operand has 7 states, 7 states have (on average 74.85714285714286) internal successors, (524), 7 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:16,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:57:16,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 176 [2023-01-27 20:57:16,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:57:16,271 INFO L130 PetriNetUnfolder]: 520/947 cut-off events. [2023-01-27 20:57:16,272 INFO L131 PetriNetUnfolder]: For 11942/11942 co-relation queries the response was YES. [2023-01-27 20:57:16,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6211 conditions, 947 events. 520/947 cut-off events. For 11942/11942 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4335 event pairs, 40 based on Foata normal form. 20/967 useless extension candidates. Maximal degree in co-relation 4956. Up to 665 conditions per place. [2023-01-27 20:57:16,277 INFO L137 encePairwiseOnDemand]: 168/176 looper letters, 110 selfloop transitions, 13 changer transitions 60/183 dead transitions. [2023-01-27 20:57:16,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 183 transitions, 2696 flow [2023-01-27 20:57:16,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:57:16,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:57:16,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 792 transitions. [2023-01-27 20:57:16,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-01-27 20:57:16,279 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 792 transitions. [2023-01-27 20:57:16,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 792 transitions. [2023-01-27 20:57:16,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:57:16,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 792 transitions. [2023-01-27 20:57:16,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.2) internal successors, (792), 10 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:16,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 176.0) internal successors, (1936), 11 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:16,282 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 176.0) internal successors, (1936), 11 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:16,282 INFO L175 Difference]: Start difference. First operand has 85 places, 104 transitions, 1387 flow. Second operand 10 states and 792 transitions. [2023-01-27 20:57:16,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 183 transitions, 2696 flow [2023-01-27 20:57:16,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 183 transitions, 2595 flow, removed 22 selfloop flow, removed 5 redundant places. [2023-01-27 20:57:16,303 INFO L231 Difference]: Finished difference. Result has 96 places, 110 transitions, 1505 flow [2023-01-27 20:57:16,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1505, PETRI_PLACES=96, PETRI_TRANSITIONS=110} [2023-01-27 20:57:16,304 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2023-01-27 20:57:16,304 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 110 transitions, 1505 flow [2023-01-27 20:57:16,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.85714285714286) internal successors, (524), 7 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:16,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:57:16,304 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] [2023-01-27 20:57:16,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 20:57:16,305 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 1 more)] === [2023-01-27 20:57:16,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:57:16,305 INFO L85 PathProgramCache]: Analyzing trace with hash 253493268, now seen corresponding path program 1 times [2023-01-27 20:57:16,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:57:16,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274657871] [2023-01-27 20:57:16,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:16,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:57:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:16,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:16,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:57:16,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274657871] [2023-01-27 20:57:16,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274657871] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:57:16,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970919098] [2023-01-27 20:57:16,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:16,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:57:16,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:57:16,455 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:57:16,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 20:57:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:16,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-27 20:57:16,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:57:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:16,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:57:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:17,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970919098] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:57:17,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:57:17,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-01-27 20:57:17,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486402651] [2023-01-27 20:57:17,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:57:17,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:57:17,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:57:17,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:57:17,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:57:17,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 176 [2023-01-27 20:57:17,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 110 transitions, 1505 flow. Second operand has 13 states, 13 states have (on average 75.38461538461539) internal successors, (980), 13 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:17,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:57:17,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 176 [2023-01-27 20:57:17,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:57:17,487 INFO L130 PetriNetUnfolder]: 948/1653 cut-off events. [2023-01-27 20:57:17,487 INFO L131 PetriNetUnfolder]: For 22613/22613 co-relation queries the response was YES. [2023-01-27 20:57:17,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11303 conditions, 1653 events. 948/1653 cut-off events. For 22613/22613 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8373 event pairs, 19 based on Foata normal form. 64/1717 useless extension candidates. Maximal degree in co-relation 10479. Up to 497 conditions per place. [2023-01-27 20:57:17,497 INFO L137 encePairwiseOnDemand]: 169/176 looper letters, 134 selfloop transitions, 80 changer transitions 149/363 dead transitions. [2023-01-27 20:57:17,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 363 transitions, 5409 flow [2023-01-27 20:57:17,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-27 20:57:17,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-27 20:57:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1671 transitions. [2023-01-27 20:57:17,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45211038961038963 [2023-01-27 20:57:17,501 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1671 transitions. [2023-01-27 20:57:17,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1671 transitions. [2023-01-27 20:57:17,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:57:17,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1671 transitions. [2023-01-27 20:57:17,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 79.57142857142857) internal successors, (1671), 21 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:17,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:17,508 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:17,508 INFO L175 Difference]: Start difference. First operand has 96 places, 110 transitions, 1505 flow. Second operand 21 states and 1671 transitions. [2023-01-27 20:57:17,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 363 transitions, 5409 flow [2023-01-27 20:57:17,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 363 transitions, 5165 flow, removed 59 selfloop flow, removed 6 redundant places. [2023-01-27 20:57:17,563 INFO L231 Difference]: Finished difference. Result has 112 places, 158 transitions, 2470 flow [2023-01-27 20:57:17,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1394, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2470, PETRI_PLACES=112, PETRI_TRANSITIONS=158} [2023-01-27 20:57:17,564 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2023-01-27 20:57:17,564 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 158 transitions, 2470 flow [2023-01-27 20:57:17,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 75.38461538461539) internal successors, (980), 13 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:17,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:57:17,565 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] [2023-01-27 20:57:17,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-27 20:57:17,769 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,SelfDestructingSolverStorable9 [2023-01-27 20:57:17,769 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:57:17,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:57:17,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1905524860, now seen corresponding path program 5 times [2023-01-27 20:57:17,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:57:17,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800218976] [2023-01-27 20:57:17,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:17,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:57:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:18,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:18,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:57:18,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800218976] [2023-01-27 20:57:18,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800218976] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:57:18,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681041247] [2023-01-27 20:57:18,055 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:57:18,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:57:18,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:57:18,056 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:57:18,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 20:57:18,150 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-27 20:57:18,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:57:18,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-27 20:57:18,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:57:18,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:18,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:57:18,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:18,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681041247] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:57:18,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:57:18,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2023-01-27 20:57:18,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972975271] [2023-01-27 20:57:18,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:57:18,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-27 20:57:18,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:57:18,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-27 20:57:18,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2023-01-27 20:57:18,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 176 [2023-01-27 20:57:18,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 158 transitions, 2470 flow. Second operand has 19 states, 19 states have (on average 72.36842105263158) internal successors, (1375), 19 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:18,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:57:18,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 176 [2023-01-27 20:57:18,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:57:19,737 INFO L130 PetriNetUnfolder]: 1185/2014 cut-off events. [2023-01-27 20:57:19,738 INFO L131 PetriNetUnfolder]: For 31987/31987 co-relation queries the response was YES. [2023-01-27 20:57:19,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15187 conditions, 2014 events. 1185/2014 cut-off events. For 31987/31987 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9921 event pairs, 16 based on Foata normal form. 102/2116 useless extension candidates. Maximal degree in co-relation 13913. Up to 691 conditions per place. [2023-01-27 20:57:19,796 INFO L137 encePairwiseOnDemand]: 166/176 looper letters, 146 selfloop transitions, 143 changer transitions 198/487 dead transitions. [2023-01-27 20:57:19,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 487 transitions, 8128 flow [2023-01-27 20:57:19,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-01-27 20:57:19,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-01-27 20:57:19,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 3543 transitions. [2023-01-27 20:57:19,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42831237911025144 [2023-01-27 20:57:19,814 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 3543 transitions. [2023-01-27 20:57:19,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 3543 transitions. [2023-01-27 20:57:19,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:57:19,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 3543 transitions. [2023-01-27 20:57:19,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 75.38297872340425) internal successors, (3543), 47 states have internal predecessors, (3543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:19,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 176.0) internal successors, (8448), 48 states have internal predecessors, (8448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:19,829 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 176.0) internal successors, (8448), 48 states have internal predecessors, (8448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:19,830 INFO L175 Difference]: Start difference. First operand has 112 places, 158 transitions, 2470 flow. Second operand 47 states and 3543 transitions. [2023-01-27 20:57:19,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 487 transitions, 8128 flow [2023-01-27 20:57:19,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 487 transitions, 7271 flow, removed 371 selfloop flow, removed 9 redundant places. [2023-01-27 20:57:19,912 INFO L231 Difference]: Finished difference. Result has 174 places, 216 transitions, 3685 flow [2023-01-27 20:57:19,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2033, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=3685, PETRI_PLACES=174, PETRI_TRANSITIONS=216} [2023-01-27 20:57:19,913 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2023-01-27 20:57:19,913 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 216 transitions, 3685 flow [2023-01-27 20:57:19,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 72.36842105263158) internal successors, (1375), 19 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:19,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:57:19,914 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] [2023-01-27 20:57:19,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-27 20:57:20,118 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,SelfDestructingSolverStorable10 [2023-01-27 20:57:20,118 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:57:20,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:57:20,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1067501500, now seen corresponding path program 1 times [2023-01-27 20:57:20,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:57:20,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973092011] [2023-01-27 20:57:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:20,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:57:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:20,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:20,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:57:20,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973092011] [2023-01-27 20:57:20,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973092011] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:57:20,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131134614] [2023-01-27 20:57:20,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:20,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:57:20,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:57:20,411 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:57:20,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 20:57:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:20,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-27 20:57:20,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:57:20,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:20,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:57:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:21,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131134614] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:57:21,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:57:21,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2023-01-27 20:57:21,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675804249] [2023-01-27 20:57:21,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:57:21,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-27 20:57:21,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:57:21,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-27 20:57:21,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2023-01-27 20:57:21,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 176 [2023-01-27 20:57:21,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 216 transitions, 3685 flow. Second operand has 21 states, 21 states have (on average 69.66666666666667) internal successors, (1463), 21 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:21,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:57:21,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 176 [2023-01-27 20:57:21,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:57:23,525 INFO L130 PetriNetUnfolder]: 1829/3082 cut-off events. [2023-01-27 20:57:23,525 INFO L131 PetriNetUnfolder]: For 68841/68841 co-relation queries the response was YES. [2023-01-27 20:57:23,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25918 conditions, 3082 events. 1829/3082 cut-off events. For 68841/68841 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 16493 event pairs, 23 based on Foata normal form. 120/3202 useless extension candidates. Maximal degree in co-relation 25204. Up to 1023 conditions per place. [2023-01-27 20:57:23,549 INFO L137 encePairwiseOnDemand]: 168/176 looper letters, 256 selfloop transitions, 259 changer transitions 186/701 dead transitions. [2023-01-27 20:57:23,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 701 transitions, 12350 flow [2023-01-27 20:57:23,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-01-27 20:57:23,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-01-27 20:57:23,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 4938 transitions. [2023-01-27 20:57:23,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41260026737967914 [2023-01-27 20:57:23,555 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 4938 transitions. [2023-01-27 20:57:23,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 4938 transitions. [2023-01-27 20:57:23,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:57:23,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 4938 transitions. [2023-01-27 20:57:23,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 72.61764705882354) internal successors, (4938), 68 states have internal predecessors, (4938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:23,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 176.0) internal successors, (12144), 69 states have internal predecessors, (12144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:23,572 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 176.0) internal successors, (12144), 69 states have internal predecessors, (12144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:23,572 INFO L175 Difference]: Start difference. First operand has 174 places, 216 transitions, 3685 flow. Second operand 68 states and 4938 transitions. [2023-01-27 20:57:23,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 701 transitions, 12350 flow [2023-01-27 20:57:23,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 701 transitions, 9911 flow, removed 1085 selfloop flow, removed 32 redundant places. [2023-01-27 20:57:23,901 INFO L231 Difference]: Finished difference. Result has 202 places, 351 transitions, 5717 flow [2023-01-27 20:57:23,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2942, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=5717, PETRI_PLACES=202, PETRI_TRANSITIONS=351} [2023-01-27 20:57:23,902 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2023-01-27 20:57:23,902 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 351 transitions, 5717 flow [2023-01-27 20:57:23,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 69.66666666666667) internal successors, (1463), 21 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:23,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:57:23,903 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] [2023-01-27 20:57:23,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-27 20:57:24,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:57:24,107 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:57:24,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:57:24,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1270924035, now seen corresponding path program 2 times [2023-01-27 20:57:24,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:57:24,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515814540] [2023-01-27 20:57:24,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:24,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:57:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:24,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:24,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:57:24,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515814540] [2023-01-27 20:57:24,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515814540] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:57:24,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421212377] [2023-01-27 20:57:24,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:57:24,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:57:24,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:57:24,534 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:57:24,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 20:57:24,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:57:24,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:57:24,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-27 20:57:24,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:57:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:24,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:57:25,012 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:25,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421212377] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:57:25,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:57:25,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 19 [2023-01-27 20:57:25,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343949670] [2023-01-27 20:57:25,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:57:25,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-27 20:57:25,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:57:25,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-27 20:57:25,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-01-27 20:57:25,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 176 [2023-01-27 20:57:25,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 351 transitions, 5717 flow. Second operand has 20 states, 20 states have (on average 67.9) internal successors, (1358), 20 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:25,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:57:25,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 176 [2023-01-27 20:57:25,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:57:27,649 INFO L130 PetriNetUnfolder]: 2687/4460 cut-off events. [2023-01-27 20:57:27,649 INFO L131 PetriNetUnfolder]: For 58844/58844 co-relation queries the response was YES. [2023-01-27 20:57:27,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34169 conditions, 4460 events. 2687/4460 cut-off events. For 58844/58844 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 25106 event pairs, 33 based on Foata normal form. 212/4672 useless extension candidates. Maximal degree in co-relation 33829. Up to 1507 conditions per place. [2023-01-27 20:57:27,679 INFO L137 encePairwiseOnDemand]: 167/176 looper letters, 310 selfloop transitions, 344 changer transitions 344/998 dead transitions. [2023-01-27 20:57:27,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 998 transitions, 17579 flow [2023-01-27 20:57:27,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-01-27 20:57:27,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2023-01-27 20:57:27,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 5408 transitions. [2023-01-27 20:57:27,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3990554899645809 [2023-01-27 20:57:27,684 INFO L72 ComplementDD]: Start complementDD. Operand 77 states and 5408 transitions. [2023-01-27 20:57:27,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 5408 transitions. [2023-01-27 20:57:27,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:57:27,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 77 states and 5408 transitions. [2023-01-27 20:57:27,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 78 states, 77 states have (on average 70.23376623376623) internal successors, (5408), 77 states have internal predecessors, (5408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:27,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 78 states, 78 states have (on average 176.0) internal successors, (13728), 78 states have internal predecessors, (13728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:27,700 INFO L81 ComplementDD]: Finished complementDD. Result has 78 states, 78 states have (on average 176.0) internal successors, (13728), 78 states have internal predecessors, (13728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:27,700 INFO L175 Difference]: Start difference. First operand has 202 places, 351 transitions, 5717 flow. Second operand 77 states and 5408 transitions. [2023-01-27 20:57:27,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 998 transitions, 17579 flow [2023-01-27 20:57:28,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 998 transitions, 15666 flow, removed 932 selfloop flow, removed 24 redundant places. [2023-01-27 20:57:28,136 INFO L231 Difference]: Finished difference. Result has 266 places, 525 transitions, 8783 flow [2023-01-27 20:57:28,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4949, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=8783, PETRI_PLACES=266, PETRI_TRANSITIONS=525} [2023-01-27 20:57:28,137 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2023-01-27 20:57:28,137 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 525 transitions, 8783 flow [2023-01-27 20:57:28,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 67.9) internal successors, (1358), 20 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:28,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:57:28,138 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:57:28,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 20:57:28,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:57:28,341 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:57:28,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:57:28,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1435905026, now seen corresponding path program 3 times [2023-01-27 20:57:28,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:57:28,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446950769] [2023-01-27 20:57:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:28,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:57:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:28,781 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:28,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:57:28,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446950769] [2023-01-27 20:57:28,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446950769] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:57:28,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660394114] [2023-01-27 20:57:28,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:57:28,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:57:28,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:57:28,796 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:57:28,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 20:57:28,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-27 20:57:28,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:57:28,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-27 20:57:28,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:57:29,066 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:29,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:57:29,363 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:29,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660394114] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:57:29,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:57:29,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-01-27 20:57:29,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930338281] [2023-01-27 20:57:29,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:57:29,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-27 20:57:29,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:57:29,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-27 20:57:29,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2023-01-27 20:57:29,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 176 [2023-01-27 20:57:29,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 525 transitions, 8783 flow. Second operand has 27 states, 27 states have (on average 67.37037037037037) internal successors, (1819), 27 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:29,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:57:29,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 176 [2023-01-27 20:57:29,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:57:35,606 INFO L130 PetriNetUnfolder]: 5896/9829 cut-off events. [2023-01-27 20:57:35,606 INFO L131 PetriNetUnfolder]: For 198182/198182 co-relation queries the response was YES. [2023-01-27 20:57:35,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81839 conditions, 9829 events. 5896/9829 cut-off events. For 198182/198182 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 64653 event pairs, 57 based on Foata normal form. 396/10225 useless extension candidates. Maximal degree in co-relation 80569. Up to 3049 conditions per place. [2023-01-27 20:57:35,686 INFO L137 encePairwiseOnDemand]: 167/176 looper letters, 482 selfloop transitions, 1065 changer transitions 674/2221 dead transitions. [2023-01-27 20:57:35,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 2221 transitions, 40921 flow [2023-01-27 20:57:35,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2023-01-27 20:57:35,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2023-01-27 20:57:35,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 10143 transitions. [2023-01-27 20:57:35,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4002130681818182 [2023-01-27 20:57:35,695 INFO L72 ComplementDD]: Start complementDD. Operand 144 states and 10143 transitions. [2023-01-27 20:57:35,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 144 states and 10143 transitions. [2023-01-27 20:57:35,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:57:35,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 144 states and 10143 transitions. [2023-01-27 20:57:35,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 145 states, 144 states have (on average 70.4375) internal successors, (10143), 144 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:35,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 145 states, 145 states have (on average 176.0) internal successors, (25520), 145 states have internal predecessors, (25520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:35,728 INFO L81 ComplementDD]: Finished complementDD. Result has 145 states, 145 states have (on average 176.0) internal successors, (25520), 145 states have internal predecessors, (25520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:35,728 INFO L175 Difference]: Start difference. First operand has 266 places, 525 transitions, 8783 flow. Second operand 144 states and 10143 transitions. [2023-01-27 20:57:35,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 2221 transitions, 40921 flow [2023-01-27 20:57:37,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 2221 transitions, 35813 flow, removed 1693 selfloop flow, removed 33 redundant places. [2023-01-27 20:57:37,695 INFO L231 Difference]: Finished difference. Result has 391 places, 1219 transitions, 22356 flow [2023-01-27 20:57:37,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=7640, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=405, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=144, PETRI_FLOW=22356, PETRI_PLACES=391, PETRI_TRANSITIONS=1219} [2023-01-27 20:57:37,696 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2023-01-27 20:57:37,696 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 1219 transitions, 22356 flow [2023-01-27 20:57:37,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 67.37037037037037) internal successors, (1819), 27 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:37,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:57:37,697 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:57:37,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 20:57:37,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-27 20:57:37,901 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:57:37,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:57:37,901 INFO L85 PathProgramCache]: Analyzing trace with hash -832080362, now seen corresponding path program 4 times [2023-01-27 20:57:37,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:57:37,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701406072] [2023-01-27 20:57:37,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:37,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:57:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:38,297 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:38,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:57:38,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701406072] [2023-01-27 20:57:38,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701406072] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:57:38,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110619354] [2023-01-27 20:57:38,297 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:57:38,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:57:38,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:57:38,298 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:57:38,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 20:57:38,365 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:57:38,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:57:38,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-27 20:57:38,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:57:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:38,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:57:39,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:39,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110619354] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:57:39,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:57:39,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2023-01-27 20:57:39,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142689557] [2023-01-27 20:57:39,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:57:39,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-27 20:57:39,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:57:39,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-27 20:57:39,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2023-01-27 20:57:39,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 176 [2023-01-27 20:57:39,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 1219 transitions, 22356 flow. Second operand has 26 states, 26 states have (on average 69.46153846153847) internal successors, (1806), 26 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:39,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:57:39,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 176 [2023-01-27 20:57:39,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:57:48,831 INFO L130 PetriNetUnfolder]: 11640/20155 cut-off events. [2023-01-27 20:57:48,832 INFO L131 PetriNetUnfolder]: For 896069/896069 co-relation queries the response was YES. [2023-01-27 20:57:49,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187382 conditions, 20155 events. 11640/20155 cut-off events. For 896069/896069 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 156978 event pairs, 169 based on Foata normal form. 552/20707 useless extension candidates. Maximal degree in co-relation 187036. Up to 5375 conditions per place. [2023-01-27 20:57:49,198 INFO L137 encePairwiseOnDemand]: 168/176 looper letters, 993 selfloop transitions, 1792 changer transitions 1069/3854 dead transitions. [2023-01-27 20:57:49,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 3854 transitions, 77758 flow [2023-01-27 20:57:49,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2023-01-27 20:57:49,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2023-01-27 20:57:49,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 9279 transitions. [2023-01-27 20:57:49,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4184253246753247 [2023-01-27 20:57:49,208 INFO L72 ComplementDD]: Start complementDD. Operand 126 states and 9279 transitions. [2023-01-27 20:57:49,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 9279 transitions. [2023-01-27 20:57:49,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:57:49,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 126 states and 9279 transitions. [2023-01-27 20:57:49,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 127 states, 126 states have (on average 73.64285714285714) internal successors, (9279), 126 states have internal predecessors, (9279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:49,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 127 states, 127 states have (on average 176.0) internal successors, (22352), 127 states have internal predecessors, (22352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:49,234 INFO L81 ComplementDD]: Finished complementDD. Result has 127 states, 127 states have (on average 176.0) internal successors, (22352), 127 states have internal predecessors, (22352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:49,234 INFO L175 Difference]: Start difference. First operand has 391 places, 1219 transitions, 22356 flow. Second operand 126 states and 9279 transitions. [2023-01-27 20:57:49,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 3854 transitions, 77758 flow [2023-01-27 20:58:00,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 3854 transitions, 64129 flow, removed 5255 selfloop flow, removed 57 redundant places. [2023-01-27 20:58:00,327 INFO L231 Difference]: Finished difference. Result has 456 places, 2341 transitions, 43792 flow [2023-01-27 20:58:00,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=18792, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=838, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=126, PETRI_FLOW=43792, PETRI_PLACES=456, PETRI_TRANSITIONS=2341} [2023-01-27 20:58:00,330 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 426 predicate places. [2023-01-27 20:58:00,334 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 2341 transitions, 43792 flow [2023-01-27 20:58:00,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 69.46153846153847) internal successors, (1806), 26 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:58:00,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:58:00,334 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:58:00,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-01-27 20:58:00,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-27 20:58:00,539 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:58:00,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:58:00,539 INFO L85 PathProgramCache]: Analyzing trace with hash 50510264, now seen corresponding path program 5 times [2023-01-27 20:58:00,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:58:00,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479529510] [2023-01-27 20:58:00,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:58:00,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:58:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:58:01,152 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:58:01,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:58:01,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479529510] [2023-01-27 20:58:01,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479529510] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:58:01,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254590050] [2023-01-27 20:58:01,153 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:58:01,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:58:01,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:58:01,154 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:58:01,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 20:58:01,216 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-27 20:58:01,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:58:01,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-27 20:58:01,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:58:01,541 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:58:01,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:58:01,889 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:58:01,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254590050] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:58:01,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:58:01,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 29 [2023-01-27 20:58:01,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876129823] [2023-01-27 20:58:01,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:58:01,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-27 20:58:01,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:58:01,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-27 20:58:01,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2023-01-27 20:58:01,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 176 [2023-01-27 20:58:01,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 2341 transitions, 43792 flow. Second operand has 30 states, 30 states have (on average 66.9) internal successors, (2007), 30 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:58:01,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:58:01,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 176 [2023-01-27 20:58:01,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:58:21,130 INFO L130 PetriNetUnfolder]: 16977/28782 cut-off events. [2023-01-27 20:58:21,131 INFO L131 PetriNetUnfolder]: For 701984/701984 co-relation queries the response was YES. [2023-01-27 20:58:21,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250301 conditions, 28782 events. 16977/28782 cut-off events. For 701984/701984 co-relation queries the response was YES. Maximal size of possible extension queue 1316. Compared 229997 event pairs, 246 based on Foata normal form. 656/29438 useless extension candidates. Maximal degree in co-relation 250115. Up to 7251 conditions per place. [2023-01-27 20:58:21,529 INFO L137 encePairwiseOnDemand]: 166/176 looper letters, 1569 selfloop transitions, 2813 changer transitions 925/5307 dead transitions. [2023-01-27 20:58:21,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 5307 transitions, 106837 flow [2023-01-27 20:58:21,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2023-01-27 20:58:21,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2023-01-27 20:58:21,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 13524 transitions. [2023-01-27 20:58:21,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39608716026241797 [2023-01-27 20:58:21,541 INFO L72 ComplementDD]: Start complementDD. Operand 194 states and 13524 transitions. [2023-01-27 20:58:21,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 194 states and 13524 transitions. [2023-01-27 20:58:21,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:58:21,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 194 states and 13524 transitions. [2023-01-27 20:58:21,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 195 states, 194 states have (on average 69.71134020618557) internal successors, (13524), 194 states have internal predecessors, (13524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:58:21,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 195 states, 195 states have (on average 176.0) internal successors, (34320), 195 states have internal predecessors, (34320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:58:21,580 INFO L81 ComplementDD]: Finished complementDD. Result has 195 states, 195 states have (on average 176.0) internal successors, (34320), 195 states have internal predecessors, (34320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:58:21,580 INFO L175 Difference]: Start difference. First operand has 456 places, 2341 transitions, 43792 flow. Second operand 194 states and 13524 transitions. [2023-01-27 20:58:21,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 5307 transitions, 106837 flow [2023-01-27 20:58:41,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 5307 transitions, 102795 flow, removed 1931 selfloop flow, removed 50 redundant places. [2023-01-27 20:58:41,341 INFO L231 Difference]: Finished difference. Result has 682 places, 4036 transitions, 84330 flow [2023-01-27 20:58:41,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=41936, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1406, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=194, PETRI_FLOW=84330, PETRI_PLACES=682, PETRI_TRANSITIONS=4036} [2023-01-27 20:58:41,343 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 652 predicate places. [2023-01-27 20:58:41,343 INFO L495 AbstractCegarLoop]: Abstraction has has 682 places, 4036 transitions, 84330 flow [2023-01-27 20:58:41,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 66.9) internal successors, (2007), 30 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:58:41,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:58:41,344 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:58:41,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-27 20:58:41,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:58:41,548 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:58:41,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:58:41,548 INFO L85 PathProgramCache]: Analyzing trace with hash 2043538846, now seen corresponding path program 6 times [2023-01-27 20:58:41,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:58:41,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991976761] [2023-01-27 20:58:41,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:58:41,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:58:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:58:41,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:58:41,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:58:41,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991976761] [2023-01-27 20:58:41,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991976761] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:58:41,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124415772] [2023-01-27 20:58:41,816 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:58:41,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:58:41,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:58:41,817 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:58:41,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 20:58:41,925 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-01-27 20:58:41,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:58:41,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-27 20:58:41,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:58:42,156 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:58:42,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:58:42,419 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:58:42,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124415772] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:58:42,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:58:42,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 26 [2023-01-27 20:58:42,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120224694] [2023-01-27 20:58:42,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:58:42,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-27 20:58:42,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:58:42,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-27 20:58:42,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2023-01-27 20:58:42,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 176 [2023-01-27 20:58:42,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 682 places, 4036 transitions, 84330 flow. Second operand has 27 states, 27 states have (on average 67.4074074074074) internal successors, (1820), 27 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:58:42,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:58:42,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 176 [2023-01-27 20:58:42,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:59:34,040 INFO L130 PetriNetUnfolder]: 33146/56275 cut-off events. [2023-01-27 20:59:34,040 INFO L131 PetriNetUnfolder]: For 2995492/2995492 co-relation queries the response was YES. [2023-01-27 20:59:36,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565509 conditions, 56275 events. 33146/56275 cut-off events. For 2995492/2995492 co-relation queries the response was YES. Maximal size of possible extension queue 2784. Compared 496108 event pairs, 464 based on Foata normal form. 2436/58711 useless extension candidates. Maximal degree in co-relation 565201. Up to 14147 conditions per place. [2023-01-27 20:59:36,398 INFO L137 encePairwiseOnDemand]: 165/176 looper letters, 1582 selfloop transitions, 5908 changer transitions 3329/10819 dead transitions. [2023-01-27 20:59:36,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 755 places, 10819 transitions, 247973 flow [2023-01-27 20:59:36,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2023-01-27 20:59:36,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2023-01-27 20:59:36,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 12951 transitions. [2023-01-27 20:59:36,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977579852579853 [2023-01-27 20:59:36,408 INFO L72 ComplementDD]: Start complementDD. Operand 185 states and 12951 transitions. [2023-01-27 20:59:36,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 12951 transitions. [2023-01-27 20:59:36,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:59:36,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 185 states and 12951 transitions. [2023-01-27 20:59:36,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 186 states, 185 states have (on average 70.00540540540541) internal successors, (12951), 185 states have internal predecessors, (12951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:36,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 186 states, 186 states have (on average 176.0) internal successors, (32736), 186 states have internal predecessors, (32736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:36,442 INFO L81 ComplementDD]: Finished complementDD. Result has 186 states, 186 states have (on average 176.0) internal successors, (32736), 186 states have internal predecessors, (32736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:59:36,442 INFO L175 Difference]: Start difference. First operand has 682 places, 4036 transitions, 84330 flow. Second operand 185 states and 12951 transitions. [2023-01-27 20:59:36,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 755 places, 10819 transitions, 247973 flow [2023-01-27 21:01:28,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 10819 transitions, 239044 flow, removed 3939 selfloop flow, removed 99 redundant places. [2023-01-27 21:01:28,206 INFO L231 Difference]: Finished difference. Result has 762 places, 6952 transitions, 160969 flow [2023-01-27 21:01:28,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=80534, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4012, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3087, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=185, PETRI_FLOW=160969, PETRI_PLACES=762, PETRI_TRANSITIONS=6952} [2023-01-27 21:01:28,210 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 732 predicate places. [2023-01-27 21:01:28,210 INFO L495 AbstractCegarLoop]: Abstraction has has 762 places, 6952 transitions, 160969 flow [2023-01-27 21:01:28,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 67.4074074074074) internal successors, (1820), 27 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:01:28,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:01:28,210 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:01:28,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-27 21:01:28,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-27 21:01:28,415 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:01:28,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:01:28,415 INFO L85 PathProgramCache]: Analyzing trace with hash -887681577, now seen corresponding path program 7 times [2023-01-27 21:01:28,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:01:28,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090223509] [2023-01-27 21:01:28,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:01:28,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:01:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:01:28,915 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:01:28,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:01:28,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090223509] [2023-01-27 21:01:28,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090223509] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:01:28,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870376904] [2023-01-27 21:01:28,916 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 21:01:28,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:01:28,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:01:28,917 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:01:28,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-27 21:01:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:01:28,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-27 21:01:28,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:01:29,258 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:01:29,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:01:29,641 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:01:29,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870376904] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:01:29,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:01:29,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 10] total 31 [2023-01-27 21:01:29,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308034459] [2023-01-27 21:01:29,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:01:29,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-27 21:01:29,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:01:29,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-27 21:01:29,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=795, Unknown=0, NotChecked=0, Total=992 [2023-01-27 21:01:29,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 176 [2023-01-27 21:01:29,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 762 places, 6952 transitions, 160969 flow. Second operand has 32 states, 32 states have (on average 69.125) internal successors, (2212), 32 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:01:29,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:01:29,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 176 [2023-01-27 21:01:29,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:03:46,101 INFO L130 PetriNetUnfolder]: 50278/85141 cut-off events. [2023-01-27 21:03:46,101 INFO L131 PetriNetUnfolder]: For 8525254/8525254 co-relation queries the response was YES. [2023-01-27 21:03:49,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036340 conditions, 85141 events. 50278/85141 cut-off events. For 8525254/8525254 co-relation queries the response was YES. Maximal size of possible extension queue 3713. Compared 783678 event pairs, 857 based on Foata normal form. 2116/87257 useless extension candidates. Maximal degree in co-relation 1035970. Up to 24202 conditions per place. [2023-01-27 21:03:49,893 INFO L137 encePairwiseOnDemand]: 168/176 looper letters, 5068 selfloop transitions, 6422 changer transitions 3266/14756 dead transitions. [2023-01-27 21:03:49,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 844 places, 14756 transitions, 375185 flow [2023-01-27 21:03:49,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2023-01-27 21:03:49,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2023-01-27 21:03:49,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 12924 transitions. [2023-01-27 21:03:49,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.412538304392237 [2023-01-27 21:03:49,905 INFO L72 ComplementDD]: Start complementDD. Operand 178 states and 12924 transitions. [2023-01-27 21:03:49,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 178 states and 12924 transitions. [2023-01-27 21:03:49,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:03:49,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 178 states and 12924 transitions. [2023-01-27 21:03:49,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 179 states, 178 states have (on average 72.6067415730337) internal successors, (12924), 178 states have internal predecessors, (12924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:03:49,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 179 states, 179 states have (on average 176.0) internal successors, (31504), 179 states have internal predecessors, (31504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:03:49,934 INFO L81 ComplementDD]: Finished complementDD. Result has 179 states, 179 states have (on average 176.0) internal successors, (31504), 179 states have internal predecessors, (31504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:03:49,934 INFO L175 Difference]: Start difference. First operand has 762 places, 6952 transitions, 160969 flow. Second operand 178 states and 12924 transitions. [2023-01-27 21:03:49,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 844 places, 14756 transitions, 375185 flow [2023-01-27 21:10:53,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 769 places, 14756 transitions, 357739 flow, removed 8334 selfloop flow, removed 75 redundant places. [2023-01-27 21:10:53,911 INFO L231 Difference]: Finished difference. Result has 874 places, 10599 transitions, 263017 flow [2023-01-27 21:10:53,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=155128, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6922, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3061, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2949, PETRI_DIFFERENCE_SUBTRAHEND_STATES=178, PETRI_FLOW=263017, PETRI_PLACES=874, PETRI_TRANSITIONS=10599} [2023-01-27 21:10:53,916 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 844 predicate places. [2023-01-27 21:10:53,916 INFO L495 AbstractCegarLoop]: Abstraction has has 874 places, 10599 transitions, 263017 flow [2023-01-27 21:10:53,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 69.125) internal successors, (2212), 32 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:53,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:53,916 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:53,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-27 21:10:54,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-27 21:10:54,122 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:10:54,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:54,122 INFO L85 PathProgramCache]: Analyzing trace with hash 864408404, now seen corresponding path program 8 times [2023-01-27 21:10:54,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:54,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691497712] [2023-01-27 21:10:54,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:54,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:54,688 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:54,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:54,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691497712] [2023-01-27 21:10:54,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691497712] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:10:54,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122216088] [2023-01-27 21:10:54,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 21:10:54,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:10:54,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:10:54,701 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:10:54,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-27 21:10:54,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 21:10:54,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:10:54,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 23 conjunts are in the unsatisfiable core [2023-01-27 21:10:54,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:10:55,149 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:55,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:10:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:55,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122216088] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:10:55,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:10:55,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 31 [2023-01-27 21:10:55,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466862673] [2023-01-27 21:10:55,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:10:55,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-27 21:10:55,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:55,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-27 21:10:55,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2023-01-27 21:10:55,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 176 [2023-01-27 21:10:55,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 874 places, 10599 transitions, 263017 flow. Second operand has 32 states, 32 states have (on average 69.1875) internal successors, (2214), 32 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:55,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:55,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 176 [2023-01-27 21:10:55,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-01-27 21:11:13,701 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 21:11:13,701 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 21:11:13,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-01-27 21:11:13,733 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 21:11:13,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-27 21:11:13,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:11:13,942 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (32states, 67/176 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 39764 conditions, 4674 events (2537/4673 cut-off events. For 73520/73520 co-relation queries the response was YES. Maximal size of possible extension queue 1513. Compared 40240 event pairs, 3 based on Foata normal form. 0/6184 useless extension candidates. Maximal degree in co-relation 39485. Up to 1047 conditions per place.). [2023-01-27 21:11:13,943 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 21:11:13,943 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 21:11:13,943 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 21:11:13,943 INFO L445 BasicCegarLoop]: Path program histogram: [8, 5, 5, 1] [2023-01-27 21:11:13,959 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 21:11:13,959 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 21:11:13,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 09:11:13 BasicIcfg [2023-01-27 21:11:13,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 21:11:13,961 INFO L158 Benchmark]: Toolchain (without parser) took 843959.09ms. Allocated memory was 675.3MB in the beginning and 8.7GB in the end (delta: 8.0GB). Free memory was 622.1MB in the beginning and 1.3GB in the end (delta: -690.2MB). Peak memory consumption was 7.3GB. Max. memory is 16.0GB. [2023-01-27 21:11:13,961 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 381.7MB. Free memory is still 327.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 21:11:13,961 INFO L158 Benchmark]: CACSL2BoogieTranslator took 152.15ms. Allocated memory is still 675.3MB. Free memory was 621.7MB in the beginning and 610.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-27 21:11:13,962 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.36ms. Allocated memory is still 675.3MB. Free memory was 610.6MB in the beginning and 609.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 21:11:13,962 INFO L158 Benchmark]: Boogie Preprocessor took 17.31ms. Allocated memory is still 675.3MB. Free memory was 609.0MB in the beginning and 607.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 21:11:13,962 INFO L158 Benchmark]: RCFGBuilder took 268.69ms. Allocated memory is still 675.3MB. Free memory was 607.7MB in the beginning and 592.4MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-01-27 21:11:13,962 INFO L158 Benchmark]: TraceAbstraction took 843493.73ms. Allocated memory was 675.3MB in the beginning and 8.7GB in the end (delta: 8.0GB). Free memory was 591.7MB in the beginning and 1.3GB in the end (delta: -720.5MB). Peak memory consumption was 7.3GB. Max. memory is 16.0GB. [2023-01-27 21:11:13,970 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 381.7MB. Free memory is still 327.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 152.15ms. Allocated memory is still 675.3MB. Free memory was 621.7MB in the beginning and 610.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 23.36ms. Allocated memory is still 675.3MB. Free memory was 610.6MB in the beginning and 609.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 17.31ms. Allocated memory is still 675.3MB. Free memory was 609.0MB in the beginning and 607.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 268.69ms. Allocated memory is still 675.3MB. Free memory was 607.7MB in the beginning and 592.4MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 843493.73ms. Allocated memory was 675.3MB in the beginning and 8.7GB in the end (delta: 8.0GB). Free memory was 591.7MB in the beginning and 1.3GB in the end (delta: -720.5MB). Peak memory consumption was 7.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 93 PlacesBefore, 30 PlacesAfterwards, 90 TransitionsBefore, 22 TransitionsAfterwards, 1134 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 4 ConcurrentYvCompositions, 5 ChoiceCompositions, 73 TotalNumberOfCompositions, 1280 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1135, independent: 1109, independent conditional: 0, independent unconditional: 1109, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 557, independent: 552, independent conditional: 0, independent unconditional: 552, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1135, independent: 557, independent conditional: 0, independent unconditional: 557, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 557, unknown conditional: 0, unknown unconditional: 557] , Statistics on independence cache: Total cache size (in pairs): 55, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (32states, 67/176 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 39764 conditions, 4674 events (2537/4673 cut-off events. For 73520/73520 co-relation queries the response was YES. Maximal size of possible extension queue 1513. Compared 40240 event pairs, 3 based on Foata normal form. 0/6184 useless extension candidates. Maximal degree in co-relation 39485. Up to 1047 conditions per place.). - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (32states, 67/176 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 39764 conditions, 4674 events (2537/4673 cut-off events. For 73520/73520 co-relation queries the response was YES. Maximal size of possible extension queue 1513. Compared 40240 event pairs, 3 based on Foata normal form. 0/6184 useless extension candidates. Maximal degree in co-relation 39485. Up to 1047 conditions per place.). - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (32states, 67/176 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 39764 conditions, 4674 events (2537/4673 cut-off events. For 73520/73520 co-relation queries the response was YES. Maximal size of possible extension queue 1513. Compared 40240 event pairs, 3 based on Foata normal form. 0/6184 useless extension candidates. Maximal degree in co-relation 39485. Up to 1047 conditions per place.). - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (32states, 67/176 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 39764 conditions, 4674 events (2537/4673 cut-off events. For 73520/73520 co-relation queries the response was YES. Maximal size of possible extension queue 1513. Compared 40240 event pairs, 3 based on Foata normal form. 0/6184 useless extension candidates. Maximal degree in co-relation 39485. Up to 1047 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 124 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 843.4s, OverallIterations: 19, TraceHistogramMax: 3, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 826.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7138 SdHoareTripleChecker+Valid, 9.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7138 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 8.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 791 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19794 IncrementalHoareTripleChecker+Invalid, 20585 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 791 mSolverCounterUnsat, 12 mSDtfsCounter, 19794 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1695 GetRequests, 345 SyntacticMatches, 19 SemanticMatches, 1331 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83709 ImplicationChecksByTransitivity, 31.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=263017occurred in iteration=18, InterpolantAutomatonStates: 1104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 670 NumberOfCodeBlocks, 670 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 881 ConstructedInterpolants, 14 QuantifiedInterpolants, 11112 SizeOfPredicates, 96 NumberOfNonLiveVariables, 1710 ConjunctsInSsa, 186 ConjunctsInUnsatCore, 39 InterpolantComputations, 9 PerfectInterpolantSequences, 51/223 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown