/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 01:36:07,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 01:36:07,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 01:36:07,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 01:36:07,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 01:36:07,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 01:36:07,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 01:36:07,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 01:36:08,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 01:36:08,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 01:36:08,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 01:36:08,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 01:36:08,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 01:36:08,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 01:36:08,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 01:36:08,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 01:36:08,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 01:36:08,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 01:36:08,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 01:36:08,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 01:36:08,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 01:36:08,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 01:36:08,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 01:36:08,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 01:36:08,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 01:36:08,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 01:36:08,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 01:36:08,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 01:36:08,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 01:36:08,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 01:36:08,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 01:36:08,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 01:36:08,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 01:36:08,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 01:36:08,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 01:36:08,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 01:36:08,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 01:36:08,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 01:36:08,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 01:36:08,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 01:36:08,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 01:36:08,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-12 01:36:08,084 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 01:36:08,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 01:36:08,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 01:36:08,086 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 01:36:08,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 01:36:08,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 01:36:08,087 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 01:36:08,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 01:36:08,087 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 01:36:08,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 01:36:08,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 01:36:08,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 01:36:08,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 01:36:08,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 01:36:08,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 01:36:08,088 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 01:36:08,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 01:36:08,089 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 01:36:08,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 01:36:08,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 01:36:08,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 01:36:08,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 01:36:08,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 01:36:08,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 01:36:08,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 01:36:08,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 01:36:08,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 01:36:08,090 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 01:36:08,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 01:36:08,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 01:36:08,090 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 01:36:08,090 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 01:36:08,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 01:36:08,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 01:36:08,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 01:36:08,365 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 01:36:08,365 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 01:36:08,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2022-12-12 01:36:09,293 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 01:36:09,472 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 01:36:09,472 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2022-12-12 01:36:09,476 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68b8bd4a/27f35f911b214bd0903e66e1117283ca/FLAG2a3fa3e0b [2022-12-12 01:36:09,489 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68b8bd4a/27f35f911b214bd0903e66e1117283ca [2022-12-12 01:36:09,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 01:36:09,491 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 01:36:09,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 01:36:09,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 01:36:09,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 01:36:09,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 01:36:09" (1/1) ... [2022-12-12 01:36:09,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a67e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:09, skipping insertion in model container [2022-12-12 01:36:09,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 01:36:09" (1/1) ... [2022-12-12 01:36:09,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 01:36:09,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 01:36:09,626 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 01:36:09,628 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 01:36:09,631 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 01:36:09,632 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 01:36:09,639 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2005,2018] [2022-12-12 01:36:09,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 01:36:09,649 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 01:36:09,662 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 01:36:09,663 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 01:36:09,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 01:36:09,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 01:36:09,673 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2005,2018] [2022-12-12 01:36:09,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 01:36:09,689 INFO L208 MainTranslator]: Completed translation [2022-12-12 01:36:09,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:09 WrapperNode [2022-12-12 01:36:09,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 01:36:09,691 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 01:36:09,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 01:36:09,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 01:36:09,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:09" (1/1) ... [2022-12-12 01:36:09,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:09" (1/1) ... [2022-12-12 01:36:09,718 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-12-12 01:36:09,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 01:36:09,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 01:36:09,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 01:36:09,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 01:36:09,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:09" (1/1) ... [2022-12-12 01:36:09,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:09" (1/1) ... [2022-12-12 01:36:09,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:09" (1/1) ... [2022-12-12 01:36:09,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:09" (1/1) ... [2022-12-12 01:36:09,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:09" (1/1) ... [2022-12-12 01:36:09,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:09" (1/1) ... [2022-12-12 01:36:09,746 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:09" (1/1) ... [2022-12-12 01:36:09,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:09" (1/1) ... [2022-12-12 01:36:09,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 01:36:09,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 01:36:09,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 01:36:09,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 01:36:09,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:09" (1/1) ... [2022-12-12 01:36:09,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 01:36:09,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:36:09,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 01:36:09,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 01:36:09,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 01:36:09,832 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 01:36:09,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 01:36:09,832 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 01:36:09,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 01:36:09,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 01:36:09,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 01:36:09,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 01:36:09,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 01:36:09,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 01:36:09,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 01:36:09,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 01:36:09,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 01:36:09,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 01:36:09,835 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 01:36:09,920 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 01:36:09,922 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 01:36:10,075 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 01:36:10,084 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 01:36:10,085 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-12 01:36:10,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 01:36:10 BoogieIcfgContainer [2022-12-12 01:36:10,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 01:36:10,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 01:36:10,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 01:36:10,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 01:36:10,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 01:36:09" (1/3) ... [2022-12-12 01:36:10,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650be25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 01:36:10, skipping insertion in model container [2022-12-12 01:36:10,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:36:09" (2/3) ... [2022-12-12 01:36:10,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650be25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 01:36:10, skipping insertion in model container [2022-12-12 01:36:10,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 01:36:10" (3/3) ... [2022-12-12 01:36:10,100 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2022-12-12 01:36:10,113 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 01:36:10,113 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 01:36:10,113 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 01:36:10,186 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 01:36:10,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 80 transitions, 176 flow [2022-12-12 01:36:10,268 INFO L130 PetriNetUnfolder]: 6/78 cut-off events. [2022-12-12 01:36:10,268 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 01:36:10,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 78 events. 6/78 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2022-12-12 01:36:10,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 80 transitions, 176 flow [2022-12-12 01:36:10,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 70 transitions, 152 flow [2022-12-12 01:36:10,293 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 01:36:10,299 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;@4b6af34b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 01:36:10,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 01:36:10,336 INFO L130 PetriNetUnfolder]: 6/69 cut-off events. [2022-12-12 01:36:10,336 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 01:36:10,336 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:10,337 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:10,338 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:10,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:10,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1824528825, now seen corresponding path program 1 times [2022-12-12 01:36:10,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:10,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024243484] [2022-12-12 01:36:10,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:10,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:10,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:10,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:10,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024243484] [2022-12-12 01:36:10,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024243484] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:10,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:10,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-12 01:36:10,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546899868] [2022-12-12 01:36:10,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:10,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 01:36:10,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:11,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 01:36:11,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-12-12 01:36:11,005 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:36:11,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 152 flow. Second operand has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:11,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:11,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:36:11,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:11,367 INFO L130 PetriNetUnfolder]: 88/285 cut-off events. [2022-12-12 01:36:11,367 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-12-12 01:36:11,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 285 events. 88/285 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1137 event pairs, 31 based on Foata normal form. 3/251 useless extension candidates. Maximal degree in co-relation 405. Up to 60 conditions per place. [2022-12-12 01:36:11,371 INFO L137 encePairwiseOnDemand]: 58/80 looper letters, 55 selfloop transitions, 16 changer transitions 10/116 dead transitions. [2022-12-12 01:36:11,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 116 transitions, 415 flow [2022-12-12 01:36:11,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-12 01:36:11,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-12 01:36:11,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 798 transitions. [2022-12-12 01:36:11,385 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6234375 [2022-12-12 01:36:11,388 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 15 predicate places. [2022-12-12 01:36:11,388 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 116 transitions, 415 flow [2022-12-12 01:36:11,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 106 transitions, 369 flow [2022-12-12 01:36:11,391 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 106 transitions, 369 flow [2022-12-12 01:36:11,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:11,392 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:11,392 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:11,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 01:36:11,392 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:11,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:11,393 INFO L85 PathProgramCache]: Analyzing trace with hash -761011633, now seen corresponding path program 2 times [2022-12-12 01:36:11,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:11,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691523922] [2022-12-12 01:36:11,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:11,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:11,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:11,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:11,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691523922] [2022-12-12 01:36:11,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691523922] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:11,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:11,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-12 01:36:11,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942210622] [2022-12-12 01:36:11,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:11,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-12 01:36:11,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:11,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-12 01:36:11,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-12-12 01:36:11,732 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:36:11,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 106 transitions, 369 flow. Second operand has 15 states, 15 states have (on average 45.53333333333333) internal successors, (683), 15 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:11,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:11,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:36:11,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:12,025 INFO L130 PetriNetUnfolder]: 135/407 cut-off events. [2022-12-12 01:36:12,026 INFO L131 PetriNetUnfolder]: For 155/209 co-relation queries the response was YES. [2022-12-12 01:36:12,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 407 events. 135/407 cut-off events. For 155/209 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1970 event pairs, 16 based on Foata normal form. 7/363 useless extension candidates. Maximal degree in co-relation 764. Up to 111 conditions per place. [2022-12-12 01:36:12,028 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 84 selfloop transitions, 31 changer transitions 8/158 dead transitions. [2022-12-12 01:36:12,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 158 transitions, 847 flow [2022-12-12 01:36:12,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 01:36:12,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 01:36:12,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 701 transitions. [2022-12-12 01:36:12,032 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6258928571428571 [2022-12-12 01:36:12,032 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 20 predicate places. [2022-12-12 01:36:12,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 158 transitions, 847 flow [2022-12-12 01:36:12,034 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 150 transitions, 790 flow [2022-12-12 01:36:12,035 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 150 transitions, 790 flow [2022-12-12 01:36:12,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 45.53333333333333) internal successors, (683), 15 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:12,035 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:12,035 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:12,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 01:36:12,036 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:12,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:12,036 INFO L85 PathProgramCache]: Analyzing trace with hash -2055054213, now seen corresponding path program 3 times [2022-12-12 01:36:12,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:12,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472038273] [2022-12-12 01:36:12,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:12,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:12,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:12,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472038273] [2022-12-12 01:36:12,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472038273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:12,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:12,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-12 01:36:12,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734068751] [2022-12-12 01:36:12,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:12,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 01:36:12,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:12,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 01:36:12,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-12-12 01:36:12,306 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:36:12,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 150 transitions, 790 flow. Second operand has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:12,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:12,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:36:12,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:12,563 INFO L130 PetriNetUnfolder]: 146/449 cut-off events. [2022-12-12 01:36:12,563 INFO L131 PetriNetUnfolder]: For 329/423 co-relation queries the response was YES. [2022-12-12 01:36:12,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1418 conditions, 449 events. 146/449 cut-off events. For 329/423 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2322 event pairs, 13 based on Foata normal form. 19/415 useless extension candidates. Maximal degree in co-relation 1210. Up to 131 conditions per place. [2022-12-12 01:36:12,566 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 92 selfloop transitions, 35 changer transitions 8/170 dead transitions. [2022-12-12 01:36:12,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 170 transitions, 1192 flow [2022-12-12 01:36:12,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 01:36:12,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 01:36:12,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 699 transitions. [2022-12-12 01:36:12,568 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6241071428571429 [2022-12-12 01:36:12,569 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 29 predicate places. [2022-12-12 01:36:12,569 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 170 transitions, 1192 flow [2022-12-12 01:36:12,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 162 transitions, 1119 flow [2022-12-12 01:36:12,571 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 162 transitions, 1119 flow [2022-12-12 01:36:12,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:12,572 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:12,572 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:12,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 01:36:12,572 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:12,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:12,573 INFO L85 PathProgramCache]: Analyzing trace with hash 57786771, now seen corresponding path program 4 times [2022-12-12 01:36:12,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:12,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398364114] [2022-12-12 01:36:12,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:12,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:12,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:12,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:12,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398364114] [2022-12-12 01:36:12,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398364114] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:12,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:12,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-12 01:36:12,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348283926] [2022-12-12 01:36:12,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:12,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 01:36:12,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:12,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 01:36:12,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-12-12 01:36:12,794 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:36:12,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 162 transitions, 1119 flow. Second operand has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:12,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:12,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:36:12,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:12,978 INFO L130 PetriNetUnfolder]: 143/446 cut-off events. [2022-12-12 01:36:12,978 INFO L131 PetriNetUnfolder]: For 515/615 co-relation queries the response was YES. [2022-12-12 01:36:12,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1700 conditions, 446 events. 143/446 cut-off events. For 515/615 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2288 event pairs, 12 based on Foata normal form. 21/417 useless extension candidates. Maximal degree in co-relation 1454. Up to 137 conditions per place. [2022-12-12 01:36:12,981 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 92 selfloop transitions, 33 changer transitions 8/168 dead transitions. [2022-12-12 01:36:12,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 168 transitions, 1442 flow [2022-12-12 01:36:12,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 01:36:12,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 01:36:12,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 694 transitions. [2022-12-12 01:36:12,983 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6196428571428572 [2022-12-12 01:36:12,983 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 38 predicate places. [2022-12-12 01:36:12,983 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 168 transitions, 1442 flow [2022-12-12 01:36:12,986 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 160 transitions, 1353 flow [2022-12-12 01:36:12,986 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 160 transitions, 1353 flow [2022-12-12 01:36:12,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:12,987 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:12,987 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:12,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 01:36:12,987 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:12,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:12,987 INFO L85 PathProgramCache]: Analyzing trace with hash 145738119, now seen corresponding path program 5 times [2022-12-12 01:36:12,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:12,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420376791] [2022-12-12 01:36:12,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:12,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:13,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:13,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:13,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420376791] [2022-12-12 01:36:13,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420376791] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:13,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:13,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-12 01:36:13,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023390878] [2022-12-12 01:36:13,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:13,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 01:36:13,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:13,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 01:36:13,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-12-12 01:36:13,244 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:36:13,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 160 transitions, 1353 flow. Second operand has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:13,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:13,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:36:13,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:13,506 INFO L130 PetriNetUnfolder]: 141/445 cut-off events. [2022-12-12 01:36:13,506 INFO L131 PetriNetUnfolder]: For 757/863 co-relation queries the response was YES. [2022-12-12 01:36:13,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1984 conditions, 445 events. 141/445 cut-off events. For 757/863 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2246 event pairs, 15 based on Foata normal form. 17/412 useless extension candidates. Maximal degree in co-relation 1514. Up to 143 conditions per place. [2022-12-12 01:36:13,510 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 92 selfloop transitions, 31 changer transitions 8/166 dead transitions. [2022-12-12 01:36:13,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 166 transitions, 1681 flow [2022-12-12 01:36:13,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 01:36:13,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 01:36:13,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 692 transitions. [2022-12-12 01:36:13,512 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6178571428571429 [2022-12-12 01:36:13,513 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 47 predicate places. [2022-12-12 01:36:13,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 166 transitions, 1681 flow [2022-12-12 01:36:13,516 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 158 transitions, 1579 flow [2022-12-12 01:36:13,517 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 158 transitions, 1579 flow [2022-12-12 01:36:13,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:13,517 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:13,517 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:13,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 01:36:13,518 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:13,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:13,518 INFO L85 PathProgramCache]: Analyzing trace with hash 659261553, now seen corresponding path program 6 times [2022-12-12 01:36:13,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:13,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746808073] [2022-12-12 01:36:13,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:13,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:13,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:13,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:13,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746808073] [2022-12-12 01:36:13,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746808073] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:13,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:13,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-12 01:36:13,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687465711] [2022-12-12 01:36:13,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:13,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-12 01:36:13,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:13,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-12 01:36:13,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-12-12 01:36:13,741 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:36:13,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 158 transitions, 1579 flow. Second operand has 15 states, 15 states have (on average 45.53333333333333) internal successors, (683), 15 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:13,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:13,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:36:13,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:13,946 INFO L130 PetriNetUnfolder]: 165/498 cut-off events. [2022-12-12 01:36:13,947 INFO L131 PetriNetUnfolder]: For 1120/1304 co-relation queries the response was YES. [2022-12-12 01:36:13,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2593 conditions, 498 events. 165/498 cut-off events. For 1120/1304 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2594 event pairs, 15 based on Foata normal form. 18/458 useless extension candidates. Maximal degree in co-relation 2059. Up to 155 conditions per place. [2022-12-12 01:36:13,950 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 106 selfloop transitions, 41 changer transitions 7/189 dead transitions. [2022-12-12 01:36:13,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 189 transitions, 2265 flow [2022-12-12 01:36:13,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 01:36:13,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 01:36:13,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 698 transitions. [2022-12-12 01:36:13,953 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6232142857142857 [2022-12-12 01:36:13,953 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 54 predicate places. [2022-12-12 01:36:13,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 189 transitions, 2265 flow [2022-12-12 01:36:13,957 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 182 transitions, 2161 flow [2022-12-12 01:36:13,957 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 182 transitions, 2161 flow [2022-12-12 01:36:13,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 45.53333333333333) internal successors, (683), 15 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:13,958 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:13,958 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:13,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 01:36:13,958 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:13,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:13,958 INFO L85 PathProgramCache]: Analyzing trace with hash -507196737, now seen corresponding path program 7 times [2022-12-12 01:36:13,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:13,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531344150] [2022-12-12 01:36:13,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:13,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:14,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:14,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:14,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531344150] [2022-12-12 01:36:14,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531344150] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:14,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:14,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-12 01:36:14,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611020606] [2022-12-12 01:36:14,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:14,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 01:36:14,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:14,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 01:36:14,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-12-12 01:36:14,144 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:36:14,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 182 transitions, 2161 flow. Second operand has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:14,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:14,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:36:14,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:14,421 INFO L130 PetriNetUnfolder]: 166/501 cut-off events. [2022-12-12 01:36:14,422 INFO L131 PetriNetUnfolder]: For 1526/1808 co-relation queries the response was YES. [2022-12-12 01:36:14,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2959 conditions, 501 events. 166/501 cut-off events. For 1526/1808 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2680 event pairs, 12 based on Foata normal form. 22/466 useless extension candidates. Maximal degree in co-relation 2342. Up to 158 conditions per place. [2022-12-12 01:36:14,426 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 107 selfloop transitions, 41 changer transitions 8/191 dead transitions. [2022-12-12 01:36:14,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 191 transitions, 2608 flow [2022-12-12 01:36:14,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 01:36:14,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 01:36:14,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 696 transitions. [2022-12-12 01:36:14,431 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6214285714285714 [2022-12-12 01:36:14,432 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 63 predicate places. [2022-12-12 01:36:14,432 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 191 transitions, 2608 flow [2022-12-12 01:36:14,436 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 183 transitions, 2471 flow [2022-12-12 01:36:14,437 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 183 transitions, 2471 flow [2022-12-12 01:36:14,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:14,437 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:14,437 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:14,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 01:36:14,437 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:14,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:14,438 INFO L85 PathProgramCache]: Analyzing trace with hash -443966931, now seen corresponding path program 8 times [2022-12-12 01:36:14,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:14,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296076066] [2022-12-12 01:36:14,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:14,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:14,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:14,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:14,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296076066] [2022-12-12 01:36:14,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296076066] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:14,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:14,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-12 01:36:14,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725973517] [2022-12-12 01:36:14,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:14,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 01:36:14,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:14,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 01:36:14,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-12-12 01:36:14,639 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:36:14,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 183 transitions, 2471 flow. Second operand has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:14,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:14,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:36:14,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:14,899 INFO L130 PetriNetUnfolder]: 165/500 cut-off events. [2022-12-12 01:36:14,899 INFO L131 PetriNetUnfolder]: For 1997/2315 co-relation queries the response was YES. [2022-12-12 01:36:14,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 500 events. 165/500 cut-off events. For 1997/2315 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2613 event pairs, 16 based on Foata normal form. 20/462 useless extension candidates. Maximal degree in co-relation 2613. Up to 157 conditions per place. [2022-12-12 01:36:14,903 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 107 selfloop transitions, 40 changer transitions 8/190 dead transitions. [2022-12-12 01:36:14,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 190 transitions, 2902 flow [2022-12-12 01:36:14,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 01:36:14,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 01:36:14,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 697 transitions. [2022-12-12 01:36:14,908 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6223214285714286 [2022-12-12 01:36:14,910 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 72 predicate places. [2022-12-12 01:36:14,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 190 transitions, 2902 flow [2022-12-12 01:36:14,915 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 182 transitions, 2749 flow [2022-12-12 01:36:14,915 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 182 transitions, 2749 flow [2022-12-12 01:36:14,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:14,915 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:14,915 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:14,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 01:36:14,916 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:14,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:14,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1803872403, now seen corresponding path program 9 times [2022-12-12 01:36:14,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:14,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390961379] [2022-12-12 01:36:14,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:14,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:15,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:15,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:15,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390961379] [2022-12-12 01:36:15,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390961379] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:15,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:15,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-12 01:36:15,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506235402] [2022-12-12 01:36:15,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:15,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 01:36:15,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:15,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 01:36:15,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-12-12 01:36:15,114 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:36:15,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 182 transitions, 2749 flow. Second operand has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:15,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:15,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:36:15,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:15,320 INFO L130 PetriNetUnfolder]: 163/489 cut-off events. [2022-12-12 01:36:15,320 INFO L131 PetriNetUnfolder]: For 2338/2680 co-relation queries the response was YES. [2022-12-12 01:36:15,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3598 conditions, 489 events. 163/489 cut-off events. For 2338/2680 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2540 event pairs, 13 based on Foata normal form. 20/451 useless extension candidates. Maximal degree in co-relation 2874. Up to 154 conditions per place. [2022-12-12 01:36:15,324 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 107 selfloop transitions, 38 changer transitions 8/188 dead transitions. [2022-12-12 01:36:15,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 188 transitions, 3169 flow [2022-12-12 01:36:15,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 01:36:15,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 01:36:15,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 695 transitions. [2022-12-12 01:36:15,326 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6205357142857143 [2022-12-12 01:36:15,327 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 81 predicate places. [2022-12-12 01:36:15,327 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 188 transitions, 3169 flow [2022-12-12 01:36:15,331 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 180 transitions, 3003 flow [2022-12-12 01:36:15,331 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 180 transitions, 3003 flow [2022-12-12 01:36:15,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:15,332 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:15,332 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:15,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 01:36:15,332 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:15,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:15,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1507501685, now seen corresponding path program 10 times [2022-12-12 01:36:15,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:15,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242319349] [2022-12-12 01:36:15,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:15,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:15,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:15,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:15,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242319349] [2022-12-12 01:36:15,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242319349] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:15,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:15,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-12 01:36:15,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572236203] [2022-12-12 01:36:15,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:15,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 01:36:15,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:15,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 01:36:15,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-12-12 01:36:15,520 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:36:15,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 180 transitions, 3003 flow. Second operand has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:15,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:15,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:36:15,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:15,758 INFO L130 PetriNetUnfolder]: 162/486 cut-off events. [2022-12-12 01:36:15,759 INFO L131 PetriNetUnfolder]: For 2674/2958 co-relation queries the response was YES. [2022-12-12 01:36:15,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3905 conditions, 486 events. 162/486 cut-off events. For 2674/2958 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2528 event pairs, 16 based on Foata normal form. 11/440 useless extension candidates. Maximal degree in co-relation 3117. Up to 152 conditions per place. [2022-12-12 01:36:15,765 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 106 selfloop transitions, 36 changer transitions 8/185 dead transitions. [2022-12-12 01:36:15,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 185 transitions, 3409 flow [2022-12-12 01:36:15,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 01:36:15,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 01:36:15,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 693 transitions. [2022-12-12 01:36:15,767 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.61875 [2022-12-12 01:36:15,767 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 88 predicate places. [2022-12-12 01:36:15,768 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 185 transitions, 3409 flow [2022-12-12 01:36:15,775 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 177 transitions, 3227 flow [2022-12-12 01:36:15,775 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 177 transitions, 3227 flow [2022-12-12 01:36:15,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:15,776 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:15,776 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:15,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 01:36:15,776 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:15,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:15,776 INFO L85 PathProgramCache]: Analyzing trace with hash 31091283, now seen corresponding path program 11 times [2022-12-12 01:36:15,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:15,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646813421] [2022-12-12 01:36:15,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:15,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:15,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:15,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:15,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646813421] [2022-12-12 01:36:15,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646813421] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:15,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:15,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-12 01:36:15,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619947770] [2022-12-12 01:36:15,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:15,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-12 01:36:15,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:15,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-12 01:36:15,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-12-12 01:36:15,974 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:36:15,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 177 transitions, 3227 flow. Second operand has 15 states, 15 states have (on average 45.53333333333333) internal successors, (683), 15 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:15,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:15,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:36:15,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:16,189 INFO L130 PetriNetUnfolder]: 165/498 cut-off events. [2022-12-12 01:36:16,189 INFO L131 PetriNetUnfolder]: For 3298/3670 co-relation queries the response was YES. [2022-12-12 01:36:16,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4335 conditions, 498 events. 165/498 cut-off events. For 3298/3670 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2690 event pairs, 14 based on Foata normal form. 13/455 useless extension candidates. Maximal degree in co-relation 3618. Up to 160 conditions per place. [2022-12-12 01:36:16,194 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 109 selfloop transitions, 37 changer transitions 8/189 dead transitions. [2022-12-12 01:36:16,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 189 transitions, 3811 flow [2022-12-12 01:36:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 01:36:16,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 01:36:16,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 698 transitions. [2022-12-12 01:36:16,195 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6232142857142857 [2022-12-12 01:36:16,195 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 95 predicate places. [2022-12-12 01:36:16,196 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 189 transitions, 3811 flow [2022-12-12 01:36:16,200 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 181 transitions, 3610 flow [2022-12-12 01:36:16,200 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 181 transitions, 3610 flow [2022-12-12 01:36:16,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 45.53333333333333) internal successors, (683), 15 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:16,201 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:16,201 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:16,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-12 01:36:16,201 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:16,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:16,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1174320615, now seen corresponding path program 12 times [2022-12-12 01:36:16,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:16,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531896723] [2022-12-12 01:36:16,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:16,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:16,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:16,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:16,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531896723] [2022-12-12 01:36:16,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531896723] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:16,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:16,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-12 01:36:16,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211317329] [2022-12-12 01:36:16,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:16,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 01:36:16,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:16,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 01:36:16,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-12-12 01:36:16,365 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:36:16,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 181 transitions, 3610 flow. Second operand has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:16,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:16,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:36:16,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:16,659 INFO L130 PetriNetUnfolder]: 170/529 cut-off events. [2022-12-12 01:36:16,659 INFO L131 PetriNetUnfolder]: For 4363/4815 co-relation queries the response was YES. [2022-12-12 01:36:16,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4877 conditions, 529 events. 170/529 cut-off events. For 4363/4815 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2954 event pairs, 12 based on Foata normal form. 14/486 useless extension candidates. Maximal degree in co-relation 3872. Up to 170 conditions per place. [2022-12-12 01:36:16,667 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 115 selfloop transitions, 42 changer transitions 7/199 dead transitions. [2022-12-12 01:36:16,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 199 transitions, 4376 flow [2022-12-12 01:36:16,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 01:36:16,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 01:36:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 695 transitions. [2022-12-12 01:36:16,668 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6205357142857143 [2022-12-12 01:36:16,669 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 104 predicate places. [2022-12-12 01:36:16,669 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 199 transitions, 4376 flow [2022-12-12 01:36:16,673 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 192 transitions, 4188 flow [2022-12-12 01:36:16,674 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 192 transitions, 4188 flow [2022-12-12 01:36:16,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:16,674 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:16,674 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:16,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-12 01:36:16,674 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:16,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:16,675 INFO L85 PathProgramCache]: Analyzing trace with hash 983270167, now seen corresponding path program 13 times [2022-12-12 01:36:16,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:16,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712978359] [2022-12-12 01:36:16,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:16,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:16,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:16,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:16,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712978359] [2022-12-12 01:36:16,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712978359] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:16,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:16,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-12 01:36:16,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929561494] [2022-12-12 01:36:16,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:16,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 01:36:16,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:16,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 01:36:16,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-12-12 01:36:16,863 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:36:16,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 192 transitions, 4188 flow. Second operand has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:16,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:16,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:36:16,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:17,077 INFO L130 PetriNetUnfolder]: 170/530 cut-off events. [2022-12-12 01:36:17,078 INFO L131 PetriNetUnfolder]: For 4823/5283 co-relation queries the response was YES. [2022-12-12 01:36:17,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5250 conditions, 530 events. 170/530 cut-off events. For 4823/5283 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2973 event pairs, 12 based on Foata normal form. 9/483 useless extension candidates. Maximal degree in co-relation 4662. Up to 171 conditions per place. [2022-12-12 01:36:17,082 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 116 selfloop transitions, 40 changer transitions 8/199 dead transitions. [2022-12-12 01:36:17,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 199 transitions, 4707 flow [2022-12-12 01:36:17,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 01:36:17,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 01:36:17,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 692 transitions. [2022-12-12 01:36:17,085 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6178571428571429 [2022-12-12 01:36:17,086 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 113 predicate places. [2022-12-12 01:36:17,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 199 transitions, 4707 flow [2022-12-12 01:36:17,093 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 191 transitions, 4474 flow [2022-12-12 01:36:17,093 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 191 transitions, 4474 flow [2022-12-12 01:36:17,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:17,096 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:17,096 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:17,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-12 01:36:17,096 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:17,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:17,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1664385909, now seen corresponding path program 14 times [2022-12-12 01:36:17,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:17,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387874211] [2022-12-12 01:36:17,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:17,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:17,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:17,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:17,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387874211] [2022-12-12 01:36:17,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387874211] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:17,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:17,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-12 01:36:17,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342511581] [2022-12-12 01:36:17,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:17,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 01:36:17,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:17,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 01:36:17,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-12-12 01:36:17,276 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:36:17,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 191 transitions, 4474 flow. Second operand has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:17,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:17,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:36:17,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:17,551 INFO L130 PetriNetUnfolder]: 168/522 cut-off events. [2022-12-12 01:36:17,552 INFO L131 PetriNetUnfolder]: For 5811/6517 co-relation queries the response was YES. [2022-12-12 01:36:17,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5544 conditions, 522 events. 168/522 cut-off events. For 5811/6517 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2882 event pairs, 13 based on Foata normal form. 14/479 useless extension candidates. Maximal degree in co-relation 4401. Up to 167 conditions per place. [2022-12-12 01:36:17,556 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 115 selfloop transitions, 38 changer transitions 8/196 dead transitions. [2022-12-12 01:36:17,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 196 transitions, 4942 flow [2022-12-12 01:36:17,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 01:36:17,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 01:36:17,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 690 transitions. [2022-12-12 01:36:17,558 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6160714285714286 [2022-12-12 01:36:17,558 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 122 predicate places. [2022-12-12 01:36:17,559 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 196 transitions, 4942 flow [2022-12-12 01:36:17,564 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 188 transitions, 4696 flow [2022-12-12 01:36:17,564 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 188 transitions, 4696 flow [2022-12-12 01:36:17,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:17,565 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:17,565 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:17,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-12 01:36:17,565 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:17,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:17,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1794561137, now seen corresponding path program 15 times [2022-12-12 01:36:17,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:17,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946344076] [2022-12-12 01:36:17,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:17,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:17,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:17,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:17,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946344076] [2022-12-12 01:36:17,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946344076] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:17,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:17,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-12 01:36:17,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416211569] [2022-12-12 01:36:17,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:17,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 01:36:17,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:17,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 01:36:17,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-12-12 01:36:17,725 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:36:17,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 188 transitions, 4696 flow. Second operand has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:17,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:17,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:36:17,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:18,008 INFO L130 PetriNetUnfolder]: 187/573 cut-off events. [2022-12-12 01:36:18,008 INFO L131 PetriNetUnfolder]: For 7157/7959 co-relation queries the response was YES. [2022-12-12 01:36:18,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6509 conditions, 573 events. 187/573 cut-off events. For 7157/7959 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3249 event pairs, 17 based on Foata normal form. 14/528 useless extension candidates. Maximal degree in co-relation 5158. Up to 181 conditions per place. [2022-12-12 01:36:18,013 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 127 selfloop transitions, 45 changer transitions 8/215 dead transitions. [2022-12-12 01:36:18,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 215 transitions, 5878 flow [2022-12-12 01:36:18,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 01:36:18,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 01:36:18,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 699 transitions. [2022-12-12 01:36:18,016 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6241071428571429 [2022-12-12 01:36:18,016 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 129 predicate places. [2022-12-12 01:36:18,016 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 215 transitions, 5878 flow [2022-12-12 01:36:18,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 207 transitions, 5613 flow [2022-12-12 01:36:18,021 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 207 transitions, 5613 flow [2022-12-12 01:36:18,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:18,022 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:18,022 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:18,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-12 01:36:18,022 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:18,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:18,023 INFO L85 PathProgramCache]: Analyzing trace with hash 206638417, now seen corresponding path program 16 times [2022-12-12 01:36:18,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:18,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209638508] [2022-12-12 01:36:18,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:18,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:18,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:18,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209638508] [2022-12-12 01:36:18,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209638508] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:18,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:18,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-12 01:36:18,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677093747] [2022-12-12 01:36:18,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:18,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-12 01:36:18,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:18,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-12 01:36:18,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-12-12 01:36:18,203 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:36:18,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 207 transitions, 5613 flow. Second operand has 15 states, 15 states have (on average 45.53333333333333) internal successors, (683), 15 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:18,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:18,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:36:18,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:18,467 INFO L130 PetriNetUnfolder]: 185/567 cut-off events. [2022-12-12 01:36:18,467 INFO L131 PetriNetUnfolder]: For 7593/8327 co-relation queries the response was YES. [2022-12-12 01:36:18,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6862 conditions, 567 events. 185/567 cut-off events. For 7593/8327 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3225 event pairs, 17 based on Foata normal form. 7/517 useless extension candidates. Maximal degree in co-relation 5487. Up to 179 conditions per place. [2022-12-12 01:36:18,473 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 128 selfloop transitions, 45 changer transitions 7/215 dead transitions. [2022-12-12 01:36:18,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 215 transitions, 6235 flow [2022-12-12 01:36:18,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 01:36:18,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 01:36:18,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 695 transitions. [2022-12-12 01:36:18,474 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6205357142857143 [2022-12-12 01:36:18,474 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 138 predicate places. [2022-12-12 01:36:18,474 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 215 transitions, 6235 flow [2022-12-12 01:36:18,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 208 transitions, 5991 flow [2022-12-12 01:36:18,480 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 208 transitions, 5991 flow [2022-12-12 01:36:18,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 45.53333333333333) internal successors, (683), 15 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:18,481 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:18,481 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:18,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-12 01:36:18,481 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:18,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:18,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1877259783, now seen corresponding path program 17 times [2022-12-12 01:36:18,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:18,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818087951] [2022-12-12 01:36:18,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:18,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:18,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:18,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:18,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818087951] [2022-12-12 01:36:18,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818087951] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:18,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:18,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-12 01:36:18,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708625772] [2022-12-12 01:36:18,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:18,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 01:36:18,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:18,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 01:36:18,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-12-12 01:36:18,634 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:36:18,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 208 transitions, 5991 flow. Second operand has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:18,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:18,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:36:18,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:18,925 INFO L130 PetriNetUnfolder]: 184/564 cut-off events. [2022-12-12 01:36:18,926 INFO L131 PetriNetUnfolder]: For 8695/9575 co-relation queries the response was YES. [2022-12-12 01:36:18,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7232 conditions, 564 events. 184/564 cut-off events. For 8695/9575 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3213 event pairs, 17 based on Foata normal form. 8/515 useless extension candidates. Maximal degree in co-relation 5782. Up to 178 conditions per place. [2022-12-12 01:36:18,931 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 128 selfloop transitions, 44 changer transitions 7/214 dead transitions. [2022-12-12 01:36:18,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 214 transitions, 6559 flow [2022-12-12 01:36:18,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 01:36:18,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 01:36:18,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 693 transitions. [2022-12-12 01:36:18,932 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.61875 [2022-12-12 01:36:18,932 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 147 predicate places. [2022-12-12 01:36:18,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 214 transitions, 6559 flow [2022-12-12 01:36:18,938 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 207 transitions, 6301 flow [2022-12-12 01:36:18,939 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 207 transitions, 6301 flow [2022-12-12 01:36:18,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:18,939 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:18,939 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:18,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-12 01:36:18,939 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:18,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:18,940 INFO L85 PathProgramCache]: Analyzing trace with hash 269785551, now seen corresponding path program 18 times [2022-12-12 01:36:18,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:18,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504677144] [2022-12-12 01:36:18,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:18,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:19,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:19,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:19,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504677144] [2022-12-12 01:36:19,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504677144] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:19,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:19,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-12 01:36:19,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999921772] [2022-12-12 01:36:19,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:19,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 01:36:19,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:19,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 01:36:19,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-12-12 01:36:19,093 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:36:19,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 207 transitions, 6301 flow. Second operand has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:19,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:19,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:36:19,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:19,356 INFO L130 PetriNetUnfolder]: 184/567 cut-off events. [2022-12-12 01:36:19,356 INFO L131 PetriNetUnfolder]: For 10095/11133 co-relation queries the response was YES. [2022-12-12 01:36:19,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7643 conditions, 567 events. 184/567 cut-off events. For 10095/11133 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3245 event pairs, 17 based on Foata normal form. 12/522 useless extension candidates. Maximal degree in co-relation 6077. Up to 179 conditions per place. [2022-12-12 01:36:19,361 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 128 selfloop transitions, 42 changer transitions 9/214 dead transitions. [2022-12-12 01:36:19,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 214 transitions, 6920 flow [2022-12-12 01:36:19,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 01:36:19,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 01:36:19,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 693 transitions. [2022-12-12 01:36:19,362 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.61875 [2022-12-12 01:36:19,363 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 156 predicate places. [2022-12-12 01:36:19,363 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 214 transitions, 6920 flow [2022-12-12 01:36:19,368 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 205 transitions, 6569 flow [2022-12-12 01:36:19,368 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 205 transitions, 6569 flow [2022-12-12 01:36:19,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:19,369 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:19,369 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:19,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-12 01:36:19,369 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:19,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:19,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1296110105, now seen corresponding path program 19 times [2022-12-12 01:36:19,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:19,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95875071] [2022-12-12 01:36:19,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:19,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:19,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:19,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:19,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95875071] [2022-12-12 01:36:19,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95875071] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:19,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:19,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-12 01:36:19,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369427360] [2022-12-12 01:36:19,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:19,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 01:36:19,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:19,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 01:36:19,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-12-12 01:36:19,526 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:36:19,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 205 transitions, 6569 flow. Second operand has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:19,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:19,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:36:19,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:19,810 INFO L130 PetriNetUnfolder]: 182/551 cut-off events. [2022-12-12 01:36:19,810 INFO L131 PetriNetUnfolder]: For 10991/12215 co-relation queries the response was YES. [2022-12-12 01:36:19,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7921 conditions, 551 events. 182/551 cut-off events. For 10991/12215 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3099 event pairs, 18 based on Foata normal form. 11/505 useless extension candidates. Maximal degree in co-relation 6324. Up to 175 conditions per place. [2022-12-12 01:36:19,815 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 127 selfloop transitions, 40 changer transitions 9/211 dead transitions. [2022-12-12 01:36:19,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 211 transitions, 7158 flow [2022-12-12 01:36:19,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 01:36:19,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 01:36:19,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 694 transitions. [2022-12-12 01:36:19,816 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6196428571428572 [2022-12-12 01:36:19,817 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 163 predicate places. [2022-12-12 01:36:19,817 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 211 transitions, 7158 flow [2022-12-12 01:36:19,822 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 202 transitions, 6789 flow [2022-12-12 01:36:19,823 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 202 transitions, 6789 flow [2022-12-12 01:36:19,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:19,823 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:19,823 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:19,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-12 01:36:19,823 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:19,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:19,824 INFO L85 PathProgramCache]: Analyzing trace with hash -940563343, now seen corresponding path program 20 times [2022-12-12 01:36:19,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:19,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153788396] [2022-12-12 01:36:19,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:19,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:19,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:19,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:19,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153788396] [2022-12-12 01:36:19,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153788396] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:19,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:19,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-12 01:36:19,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360319409] [2022-12-12 01:36:19,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:19,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 01:36:19,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:19,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 01:36:19,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-12-12 01:36:19,974 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:36:19,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 202 transitions, 6789 flow. Second operand has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:19,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:19,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:36:19,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:20,265 INFO L130 PetriNetUnfolder]: 180/548 cut-off events. [2022-12-12 01:36:20,265 INFO L131 PetriNetUnfolder]: For 11026/12128 co-relation queries the response was YES. [2022-12-12 01:36:20,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8262 conditions, 548 events. 180/548 cut-off events. For 11026/12128 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3082 event pairs, 14 based on Foata normal form. 7/500 useless extension candidates. Maximal degree in co-relation 7408. Up to 174 conditions per place. [2022-12-12 01:36:20,270 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 129 selfloop transitions, 41 changer transitions 7/212 dead transitions. [2022-12-12 01:36:20,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 212 transitions, 7549 flow [2022-12-12 01:36:20,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 01:36:20,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 01:36:20,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 695 transitions. [2022-12-12 01:36:20,272 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6205357142857143 [2022-12-12 01:36:20,272 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 170 predicate places. [2022-12-12 01:36:20,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 212 transitions, 7549 flow [2022-12-12 01:36:20,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 205 transitions, 7249 flow [2022-12-12 01:36:20,278 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 205 transitions, 7249 flow [2022-12-12 01:36:20,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.642857142857146) internal successors, (639), 14 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:20,278 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:20,278 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:20,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-12 01:36:20,279 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:20,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:20,279 INFO L85 PathProgramCache]: Analyzing trace with hash 360610370, now seen corresponding path program 1 times [2022-12-12 01:36:20,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:20,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313622467] [2022-12-12 01:36:20,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:20,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:20,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:20,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:20,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313622467] [2022-12-12 01:36:20,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313622467] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:36:20,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040640226] [2022-12-12 01:36:20,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:20,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:36:20,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:36:20,333 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:36:20,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 01:36:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:20,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 01:36:20,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:36:20,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:20,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:36:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:20,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040640226] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 01:36:20,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 01:36:20,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2022-12-12 01:36:20,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326032125] [2022-12-12 01:36:20,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:20,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 01:36:20,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:20,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 01:36:20,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-12 01:36:20,477 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2022-12-12 01:36:20,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 205 transitions, 7249 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:20,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:20,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2022-12-12 01:36:20,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:20,630 INFO L130 PetriNetUnfolder]: 187/561 cut-off events. [2022-12-12 01:36:20,631 INFO L131 PetriNetUnfolder]: For 13955/15333 co-relation queries the response was YES. [2022-12-12 01:36:20,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8983 conditions, 561 events. 187/561 cut-off events. For 13955/15333 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3088 event pairs, 8 based on Foata normal form. 7/514 useless extension candidates. Maximal degree in co-relation 7227. Up to 178 conditions per place. [2022-12-12 01:36:20,636 INFO L137 encePairwiseOnDemand]: 72/80 looper letters, 161 selfloop transitions, 64 changer transitions 0/268 dead transitions. [2022-12-12 01:36:20,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 268 transitions, 10375 flow [2022-12-12 01:36:20,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 01:36:20,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 01:36:20,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 434 transitions. [2022-12-12 01:36:20,638 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.775 [2022-12-12 01:36:20,638 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 172 predicate places. [2022-12-12 01:36:20,638 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 268 transitions, 10375 flow [2022-12-12 01:36:20,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 268 transitions, 10375 flow [2022-12-12 01:36:20,645 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 268 transitions, 10375 flow [2022-12-12 01:36:20,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:20,645 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:20,645 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:20,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-12 01:36:20,850 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,SelfDestructingSolverStorable20 [2022-12-12 01:36:20,852 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:20,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:20,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1584362844, now seen corresponding path program 1 times [2022-12-12 01:36:20,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:20,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923618254] [2022-12-12 01:36:20,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:20,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:20,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:20,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923618254] [2022-12-12 01:36:20,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923618254] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:36:20,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151502428] [2022-12-12 01:36:20,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:20,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:36:20,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:36:20,889 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:36:20,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 01:36:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:20,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 01:36:20,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:36:20,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:20,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:36:21,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:21,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151502428] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 01:36:21,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 01:36:21,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2022-12-12 01:36:21,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660729266] [2022-12-12 01:36:21,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:21,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 01:36:21,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:21,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 01:36:21,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-12 01:36:21,001 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2022-12-12 01:36:21,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 268 transitions, 10375 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:21,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:21,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2022-12-12 01:36:21,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:21,135 INFO L130 PetriNetUnfolder]: 214/683 cut-off events. [2022-12-12 01:36:21,135 INFO L131 PetriNetUnfolder]: For 17663/19067 co-relation queries the response was YES. [2022-12-12 01:36:21,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11372 conditions, 683 events. 214/683 cut-off events. For 17663/19067 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4117 event pairs, 6 based on Foata normal form. 26/647 useless extension candidates. Maximal degree in co-relation 8839. Up to 246 conditions per place. [2022-12-12 01:36:21,176 INFO L137 encePairwiseOnDemand]: 72/80 looper letters, 211 selfloop transitions, 74 changer transitions 0/328 dead transitions. [2022-12-12 01:36:21,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 328 transitions, 13612 flow [2022-12-12 01:36:21,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 01:36:21,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 01:36:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 387 transitions. [2022-12-12 01:36:21,177 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.80625 [2022-12-12 01:36:21,177 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 177 predicate places. [2022-12-12 01:36:21,177 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 328 transitions, 13612 flow [2022-12-12 01:36:21,186 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 328 transitions, 13612 flow [2022-12-12 01:36:21,186 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 328 transitions, 13612 flow [2022-12-12 01:36:21,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:21,186 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:21,186 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:21,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-12 01:36:21,391 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,SelfDestructingSolverStorable21 [2022-12-12 01:36:21,391 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:21,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:21,392 INFO L85 PathProgramCache]: Analyzing trace with hash 465511676, now seen corresponding path program 2 times [2022-12-12 01:36:21,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:21,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242668729] [2022-12-12 01:36:21,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:21,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:21,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:21,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:21,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242668729] [2022-12-12 01:36:21,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242668729] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:21,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:21,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 01:36:21,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380947151] [2022-12-12 01:36:21,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:21,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 01:36:21,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:21,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 01:36:21,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 01:36:21,424 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2022-12-12 01:36:21,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 328 transitions, 13612 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:21,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:21,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2022-12-12 01:36:21,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:21,564 INFO L130 PetriNetUnfolder]: 225/707 cut-off events. [2022-12-12 01:36:21,565 INFO L131 PetriNetUnfolder]: For 17871/18992 co-relation queries the response was YES. [2022-12-12 01:36:21,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12386 conditions, 707 events. 225/707 cut-off events. For 17871/18992 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4275 event pairs, 4 based on Foata normal form. 31/674 useless extension candidates. Maximal degree in co-relation 10016. Up to 232 conditions per place. [2022-12-12 01:36:21,571 INFO L137 encePairwiseOnDemand]: 74/80 looper letters, 246 selfloop transitions, 53 changer transitions 9/351 dead transitions. [2022-12-12 01:36:21,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 351 transitions, 15292 flow [2022-12-12 01:36:21,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 01:36:21,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 01:36:21,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 437 transitions. [2022-12-12 01:36:21,572 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7803571428571429 [2022-12-12 01:36:21,572 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 183 predicate places. [2022-12-12 01:36:21,572 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 351 transitions, 15292 flow [2022-12-12 01:36:21,581 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 342 transitions, 14848 flow [2022-12-12 01:36:21,581 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 342 transitions, 14848 flow [2022-12-12 01:36:21,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:21,581 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:21,582 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:21,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-12 01:36:21,582 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:21,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:21,582 INFO L85 PathProgramCache]: Analyzing trace with hash 83670374, now seen corresponding path program 3 times [2022-12-12 01:36:21,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:21,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120584762] [2022-12-12 01:36:21,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:21,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:21,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:21,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:21,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120584762] [2022-12-12 01:36:21,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120584762] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:21,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:21,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 01:36:21,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900949797] [2022-12-12 01:36:21,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:21,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 01:36:21,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:21,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 01:36:21,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 01:36:21,614 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2022-12-12 01:36:21,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 342 transitions, 14848 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:21,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:21,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2022-12-12 01:36:21,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:21,783 INFO L130 PetriNetUnfolder]: 245/764 cut-off events. [2022-12-12 01:36:21,783 INFO L131 PetriNetUnfolder]: For 19908/20541 co-relation queries the response was YES. [2022-12-12 01:36:21,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14134 conditions, 764 events. 245/764 cut-off events. For 19908/20541 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4617 event pairs, 2 based on Foata normal form. 19/718 useless extension candidates. Maximal degree in co-relation 11499. Up to 239 conditions per place. [2022-12-12 01:36:21,790 INFO L137 encePairwiseOnDemand]: 70/80 looper letters, 233 selfloop transitions, 122 changer transitions 3/401 dead transitions. [2022-12-12 01:36:21,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 401 transitions, 18414 flow [2022-12-12 01:36:21,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 01:36:21,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 01:36:21,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 554 transitions. [2022-12-12 01:36:21,791 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7694444444444445 [2022-12-12 01:36:21,792 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 186 predicate places. [2022-12-12 01:36:21,792 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 401 transitions, 18414 flow [2022-12-12 01:36:21,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 257 places, 398 transitions, 18261 flow [2022-12-12 01:36:21,803 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 398 transitions, 18261 flow [2022-12-12 01:36:21,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:21,803 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:21,803 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:21,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-12 01:36:21,803 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:21,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:21,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1245808012, now seen corresponding path program 2 times [2022-12-12 01:36:21,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:21,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978910394] [2022-12-12 01:36:21,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:21,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:21,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:21,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978910394] [2022-12-12 01:36:21,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978910394] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:21,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:21,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 01:36:21,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558855036] [2022-12-12 01:36:21,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:21,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 01:36:21,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:21,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 01:36:21,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 01:36:21,829 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2022-12-12 01:36:21,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 398 transitions, 18261 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:21,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:21,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2022-12-12 01:36:21,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:22,043 INFO L130 PetriNetUnfolder]: 271/854 cut-off events. [2022-12-12 01:36:22,044 INFO L131 PetriNetUnfolder]: For 25200/25714 co-relation queries the response was YES. [2022-12-12 01:36:22,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16370 conditions, 854 events. 271/854 cut-off events. For 25200/25714 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5326 event pairs, 2 based on Foata normal form. 14/805 useless extension candidates. Maximal degree in co-relation 14790. Up to 289 conditions per place. [2022-12-12 01:36:22,052 INFO L137 encePairwiseOnDemand]: 72/80 looper letters, 297 selfloop transitions, 107 changer transitions 0/447 dead transitions. [2022-12-12 01:36:22,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 447 transitions, 21540 flow [2022-12-12 01:36:22,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 01:36:22,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 01:36:22,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 512 transitions. [2022-12-12 01:36:22,054 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8 [2022-12-12 01:36:22,054 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 193 predicate places. [2022-12-12 01:36:22,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 264 places, 447 transitions, 21540 flow [2022-12-12 01:36:22,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 264 places, 447 transitions, 21540 flow [2022-12-12 01:36:22,067 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 447 transitions, 21540 flow [2022-12-12 01:36:22,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:22,067 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:22,067 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:22,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-12 01:36:22,067 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:22,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:22,068 INFO L85 PathProgramCache]: Analyzing trace with hash 75753254, now seen corresponding path program 3 times [2022-12-12 01:36:22,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:22,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524833455] [2022-12-12 01:36:22,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:22,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:22,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:22,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524833455] [2022-12-12 01:36:22,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524833455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:22,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:22,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 01:36:22,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529104759] [2022-12-12 01:36:22,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:22,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 01:36:22,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:22,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 01:36:22,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 01:36:22,094 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2022-12-12 01:36:22,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 447 transitions, 21540 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:22,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:22,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2022-12-12 01:36:22,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:22,311 INFO L130 PetriNetUnfolder]: 265/827 cut-off events. [2022-12-12 01:36:22,311 INFO L131 PetriNetUnfolder]: For 25517/26089 co-relation queries the response was YES. [2022-12-12 01:36:22,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16412 conditions, 827 events. 265/827 cut-off events. For 25517/26089 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5157 event pairs, 3 based on Foata normal form. 16/782 useless extension candidates. Maximal degree in co-relation 13062. Up to 273 conditions per place. [2022-12-12 01:36:22,319 INFO L137 encePairwiseOnDemand]: 72/80 looper letters, 318 selfloop transitions, 83 changer transitions 2/446 dead transitions. [2022-12-12 01:36:22,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 446 transitions, 22294 flow [2022-12-12 01:36:22,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 01:36:22,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 01:36:22,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 500 transitions. [2022-12-12 01:36:22,320 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.78125 [2022-12-12 01:36:22,321 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 200 predicate places. [2022-12-12 01:36:22,321 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 446 transitions, 22294 flow [2022-12-12 01:36:22,333 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 444 transitions, 22186 flow [2022-12-12 01:36:22,334 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 444 transitions, 22186 flow [2022-12-12 01:36:22,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:22,334 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:22,334 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:22,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-12 01:36:22,334 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:22,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:22,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1254251380, now seen corresponding path program 4 times [2022-12-12 01:36:22,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:22,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541771489] [2022-12-12 01:36:22,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:22,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:22,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:22,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:22,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541771489] [2022-12-12 01:36:22,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541771489] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:22,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:22,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 01:36:22,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289797874] [2022-12-12 01:36:22,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:22,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 01:36:22,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:22,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 01:36:22,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 01:36:22,362 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2022-12-12 01:36:22,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 444 transitions, 22186 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:22,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:22,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2022-12-12 01:36:22,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:22,602 INFO L130 PetriNetUnfolder]: 256/802 cut-off events. [2022-12-12 01:36:22,602 INFO L131 PetriNetUnfolder]: For 25342/25947 co-relation queries the response was YES. [2022-12-12 01:36:22,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16415 conditions, 802 events. 256/802 cut-off events. For 25342/25947 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4933 event pairs, 6 based on Foata normal form. 13/757 useless extension candidates. Maximal degree in co-relation 13514. Up to 252 conditions per place. [2022-12-12 01:36:22,613 INFO L137 encePairwiseOnDemand]: 72/80 looper letters, 311 selfloop transitions, 80 changer transitions 3/437 dead transitions. [2022-12-12 01:36:22,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 437 transitions, 22578 flow [2022-12-12 01:36:22,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 01:36:22,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 01:36:22,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 498 transitions. [2022-12-12 01:36:22,614 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.778125 [2022-12-12 01:36:22,614 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 203 predicate places. [2022-12-12 01:36:22,615 INFO L82 GeneralOperation]: Start removeDead. Operand has 274 places, 437 transitions, 22578 flow [2022-12-12 01:36:22,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 270 places, 434 transitions, 22407 flow [2022-12-12 01:36:22,630 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 434 transitions, 22407 flow [2022-12-12 01:36:22,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:22,630 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:22,631 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:22,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-12 01:36:22,631 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:22,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:22,631 INFO L85 PathProgramCache]: Analyzing trace with hash 916903468, now seen corresponding path program 4 times [2022-12-12 01:36:22,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:22,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207456585] [2022-12-12 01:36:22,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:22,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:22,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:22,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:22,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207456585] [2022-12-12 01:36:22,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207456585] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:22,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:22,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 01:36:22,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308283832] [2022-12-12 01:36:22,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:22,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 01:36:22,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:22,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 01:36:22,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 01:36:22,662 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2022-12-12 01:36:22,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 434 transitions, 22407 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:22,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:22,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2022-12-12 01:36:22,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:22,875 INFO L130 PetriNetUnfolder]: 251/782 cut-off events. [2022-12-12 01:36:22,876 INFO L131 PetriNetUnfolder]: For 26755/27344 co-relation queries the response was YES. [2022-12-12 01:36:22,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16560 conditions, 782 events. 251/782 cut-off events. For 26755/27344 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4719 event pairs, 3 based on Foata normal form. 14/740 useless extension candidates. Maximal degree in co-relation 13610. Up to 242 conditions per place. [2022-12-12 01:36:22,884 INFO L137 encePairwiseOnDemand]: 74/80 looper letters, 318 selfloop transitions, 53 changer transitions 10/424 dead transitions. [2022-12-12 01:36:22,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 424 transitions, 22609 flow [2022-12-12 01:36:22,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 01:36:22,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 01:36:22,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 435 transitions. [2022-12-12 01:36:22,885 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7767857142857143 [2022-12-12 01:36:22,888 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 205 predicate places. [2022-12-12 01:36:22,888 INFO L82 GeneralOperation]: Start removeDead. Operand has 276 places, 424 transitions, 22609 flow [2022-12-12 01:36:22,900 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 414 transitions, 22029 flow [2022-12-12 01:36:22,901 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 414 transitions, 22029 flow [2022-12-12 01:36:22,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:22,901 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:22,901 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:22,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-12 01:36:22,901 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:22,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:22,902 INFO L85 PathProgramCache]: Analyzing trace with hash 88849490, now seen corresponding path program 5 times [2022-12-12 01:36:22,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:22,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533823009] [2022-12-12 01:36:22,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:22,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:22,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:22,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533823009] [2022-12-12 01:36:22,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533823009] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:22,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:22,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 01:36:22,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289871757] [2022-12-12 01:36:22,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:22,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 01:36:22,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:22,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 01:36:22,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 01:36:22,933 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2022-12-12 01:36:22,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 414 transitions, 22029 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:22,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:22,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2022-12-12 01:36:22,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:23,145 INFO L130 PetriNetUnfolder]: 236/701 cut-off events. [2022-12-12 01:36:23,146 INFO L131 PetriNetUnfolder]: For 26622/27372 co-relation queries the response was YES. [2022-12-12 01:36:23,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15927 conditions, 701 events. 236/701 cut-off events. For 26622/27372 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4020 event pairs, 3 based on Foata normal form. 13/670 useless extension candidates. Maximal degree in co-relation 14573. Up to 229 conditions per place. [2022-12-12 01:36:23,153 INFO L137 encePairwiseOnDemand]: 72/80 looper letters, 264 selfloop transitions, 87 changer transitions 0/394 dead transitions. [2022-12-12 01:36:23,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 394 transitions, 21568 flow [2022-12-12 01:36:23,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 01:36:23,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 01:36:23,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 506 transitions. [2022-12-12 01:36:23,154 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.790625 [2022-12-12 01:36:23,156 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 207 predicate places. [2022-12-12 01:36:23,156 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 394 transitions, 21568 flow [2022-12-12 01:36:23,167 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 278 places, 394 transitions, 21568 flow [2022-12-12 01:36:23,168 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 394 transitions, 21568 flow [2022-12-12 01:36:23,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:23,168 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:23,168 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:23,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-12 01:36:23,169 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:23,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:23,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1722244974, now seen corresponding path program 6 times [2022-12-12 01:36:23,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:23,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885246956] [2022-12-12 01:36:23,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:23,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:23,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:23,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:23,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885246956] [2022-12-12 01:36:23,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885246956] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:23,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:23,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 01:36:23,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214998477] [2022-12-12 01:36:23,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:23,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 01:36:23,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:23,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 01:36:23,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 01:36:23,197 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2022-12-12 01:36:23,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 394 transitions, 21568 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:23,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:23,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2022-12-12 01:36:23,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:23,385 INFO L130 PetriNetUnfolder]: 226/664 cut-off events. [2022-12-12 01:36:23,385 INFO L131 PetriNetUnfolder]: For 26323/27095 co-relation queries the response was YES. [2022-12-12 01:36:23,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15506 conditions, 664 events. 226/664 cut-off events. For 26323/27095 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3690 event pairs, 2 based on Foata normal form. 8/630 useless extension candidates. Maximal degree in co-relation 12739. Up to 229 conditions per place. [2022-12-12 01:36:23,392 INFO L137 encePairwiseOnDemand]: 72/80 looper letters, 263 selfloop transitions, 63 changer transitions 2/371 dead transitions. [2022-12-12 01:36:23,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 371 transitions, 20838 flow [2022-12-12 01:36:23,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 01:36:23,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 01:36:23,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 494 transitions. [2022-12-12 01:36:23,394 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.771875 [2022-12-12 01:36:23,395 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 213 predicate places. [2022-12-12 01:36:23,395 INFO L82 GeneralOperation]: Start removeDead. Operand has 284 places, 371 transitions, 20838 flow [2022-12-12 01:36:23,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 274 places, 369 transitions, 20714 flow [2022-12-12 01:36:23,406 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 369 transitions, 20714 flow [2022-12-12 01:36:23,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:23,406 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:23,406 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:23,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-12 01:36:23,407 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:23,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:23,408 INFO L85 PathProgramCache]: Analyzing trace with hash 569906194, now seen corresponding path program 5 times [2022-12-12 01:36:23,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:23,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469161642] [2022-12-12 01:36:23,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:23,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:23,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:23,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:23,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469161642] [2022-12-12 01:36:23,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469161642] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:23,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:23,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 01:36:23,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641029089] [2022-12-12 01:36:23,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:23,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 01:36:23,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:23,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 01:36:23,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 01:36:23,440 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2022-12-12 01:36:23,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 369 transitions, 20714 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:23,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:23,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2022-12-12 01:36:23,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:23,626 INFO L130 PetriNetUnfolder]: 219/648 cut-off events. [2022-12-12 01:36:23,627 INFO L131 PetriNetUnfolder]: For 27569/28485 co-relation queries the response was YES. [2022-12-12 01:36:23,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15505 conditions, 648 events. 219/648 cut-off events. For 27569/28485 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3562 event pairs, 4 based on Foata normal form. 9/616 useless extension candidates. Maximal degree in co-relation 12829. Up to 229 conditions per place. [2022-12-12 01:36:23,634 INFO L137 encePairwiseOnDemand]: 72/80 looper letters, 257 selfloop transitions, 58 changer transitions 3/361 dead transitions. [2022-12-12 01:36:23,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 361 transitions, 20851 flow [2022-12-12 01:36:23,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 01:36:23,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 01:36:23,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 433 transitions. [2022-12-12 01:36:23,635 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7732142857142857 [2022-12-12 01:36:23,636 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 209 predicate places. [2022-12-12 01:36:23,636 INFO L82 GeneralOperation]: Start removeDead. Operand has 280 places, 361 transitions, 20851 flow [2022-12-12 01:36:23,646 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 358 transitions, 20656 flow [2022-12-12 01:36:23,647 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 358 transitions, 20656 flow [2022-12-12 01:36:23,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:23,647 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:23,647 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:23,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-12 01:36:23,648 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:23,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:23,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1503323054, now seen corresponding path program 6 times [2022-12-12 01:36:23,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:23,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602926925] [2022-12-12 01:36:23,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:23,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:23,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:23,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:23,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602926925] [2022-12-12 01:36:23,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602926925] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:23,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 01:36:23,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 01:36:23,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500805845] [2022-12-12 01:36:23,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:23,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 01:36:23,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:23,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 01:36:23,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 01:36:23,677 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2022-12-12 01:36:23,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 358 transitions, 20656 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:23,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:23,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2022-12-12 01:36:23,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:23,864 INFO L130 PetriNetUnfolder]: 196/572 cut-off events. [2022-12-12 01:36:23,864 INFO L131 PetriNetUnfolder]: For 24899/25763 co-relation queries the response was YES. [2022-12-12 01:36:23,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14205 conditions, 572 events. 196/572 cut-off events. For 24899/25763 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2908 event pairs, 4 based on Foata normal form. 9/551 useless extension candidates. Maximal degree in co-relation 12222. Up to 229 conditions per place. [2022-12-12 01:36:23,870 INFO L137 encePairwiseOnDemand]: 72/80 looper letters, 199 selfloop transitions, 85 changer transitions 0/327 dead transitions. [2022-12-12 01:36:23,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 327 transitions, 19219 flow [2022-12-12 01:36:23,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 01:36:23,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 01:36:23,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 493 transitions. [2022-12-12 01:36:23,872 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7703125 [2022-12-12 01:36:23,872 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 202 predicate places. [2022-12-12 01:36:23,873 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 327 transitions, 19219 flow [2022-12-12 01:36:23,882 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 273 places, 327 transitions, 19219 flow [2022-12-12 01:36:23,883 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 327 transitions, 19219 flow [2022-12-12 01:36:23,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:23,883 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:23,883 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:23,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-12 01:36:23,884 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:23,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:23,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2079770365, now seen corresponding path program 1 times [2022-12-12 01:36:23,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:23,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330897901] [2022-12-12 01:36:23,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:23,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:24,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:24,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:24,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330897901] [2022-12-12 01:36:24,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330897901] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:36:24,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558863616] [2022-12-12 01:36:24,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:24,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:36:24,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:36:24,065 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:36:24,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 01:36:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:24,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 01:36:24,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:36:24,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:24,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:36:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:24,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558863616] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:36:24,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:36:24,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-12-12 01:36:24,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263604212] [2022-12-12 01:36:24,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:36:24,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-12 01:36:24,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:24,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-12 01:36:24,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-12-12 01:36:24,975 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:36:24,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 327 transitions, 19219 flow. Second operand has 34 states, 34 states have (on average 43.85294117647059) internal successors, (1491), 34 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:24,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:24,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:36:24,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:27,364 INFO L130 PetriNetUnfolder]: 634/1808 cut-off events. [2022-12-12 01:36:27,364 INFO L131 PetriNetUnfolder]: For 130515/132115 co-relation queries the response was YES. [2022-12-12 01:36:27,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44074 conditions, 1808 events. 634/1808 cut-off events. For 130515/132115 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 13365 event pairs, 14 based on Foata normal form. 45/1752 useless extension candidates. Maximal degree in co-relation 33648. Up to 948 conditions per place. [2022-12-12 01:36:27,385 INFO L137 encePairwiseOnDemand]: 60/80 looper letters, 398 selfloop transitions, 486 changer transitions 49/966 dead transitions. [2022-12-12 01:36:27,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 966 transitions, 61337 flow [2022-12-12 01:36:27,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-12-12 01:36:27,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-12-12 01:36:27,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 3041 transitions. [2022-12-12 01:36:27,391 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5939453125 [2022-12-12 01:36:27,392 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 265 predicate places. [2022-12-12 01:36:27,392 INFO L82 GeneralOperation]: Start removeDead. Operand has 336 places, 966 transitions, 61337 flow [2022-12-12 01:36:27,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 327 places, 917 transitions, 58081 flow [2022-12-12 01:36:27,423 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 917 transitions, 58081 flow [2022-12-12 01:36:27,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 43.85294117647059) internal successors, (1491), 34 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:27,424 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:27,424 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:27,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 01:36:27,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:36:27,629 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:27,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:27,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1210194133, now seen corresponding path program 2 times [2022-12-12 01:36:27,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:27,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950214772] [2022-12-12 01:36:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:27,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:27,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:27,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:27,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950214772] [2022-12-12 01:36:27,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950214772] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:36:27,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76984324] [2022-12-12 01:36:27,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 01:36:27,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:36:27,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:36:27,844 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) [2022-12-12 01:36:27,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 01:36:27,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 01:36:27,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:36:27,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 01:36:27,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:36:28,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:28,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:36:28,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:28,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76984324] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:36:28,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:36:28,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-12-12 01:36:28,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037227273] [2022-12-12 01:36:28,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:36:28,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-12 01:36:28,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:28,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-12 01:36:28,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-12-12 01:36:28,644 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:36:28,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 917 transitions, 58081 flow. Second operand has 34 states, 34 states have (on average 43.85294117647059) internal successors, (1491), 34 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:28,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:28,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:36:28,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:31,041 INFO L130 PetriNetUnfolder]: 642/1867 cut-off events. [2022-12-12 01:36:31,041 INFO L131 PetriNetUnfolder]: For 144332/146285 co-relation queries the response was YES. [2022-12-12 01:36:31,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46533 conditions, 1867 events. 642/1867 cut-off events. For 144332/146285 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 14132 event pairs, 19 based on Foata normal form. 57/1821 useless extension candidates. Maximal degree in co-relation 35166. Up to 970 conditions per place. [2022-12-12 01:36:31,065 INFO L137 encePairwiseOnDemand]: 60/80 looper letters, 419 selfloop transitions, 518 changer transitions 34/1004 dead transitions. [2022-12-12 01:36:31,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 1004 transitions, 65303 flow [2022-12-12 01:36:31,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-12-12 01:36:31,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2022-12-12 01:36:31,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 3244 transitions. [2022-12-12 01:36:31,067 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5876811594202899 [2022-12-12 01:36:31,068 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 324 predicate places. [2022-12-12 01:36:31,068 INFO L82 GeneralOperation]: Start removeDead. Operand has 395 places, 1004 transitions, 65303 flow [2022-12-12 01:36:31,150 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 386 places, 970 transitions, 63092 flow [2022-12-12 01:36:31,150 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 970 transitions, 63092 flow [2022-12-12 01:36:31,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 43.85294117647059) internal successors, (1491), 34 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:31,151 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:31,151 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:31,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 01:36:31,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:36:31,355 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:31,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:31,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1529347183, now seen corresponding path program 3 times [2022-12-12 01:36:31,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:31,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120572491] [2022-12-12 01:36:31,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:31,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:31,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:31,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:31,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120572491] [2022-12-12 01:36:31,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120572491] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:36:31,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170571725] [2022-12-12 01:36:31,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 01:36:31,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:36:31,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:36:31,560 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) [2022-12-12 01:36:31,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 01:36:31,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 01:36:31,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:36:31,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 01:36:31,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:36:31,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:31,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:36:32,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:32,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170571725] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:36:32,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:36:32,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-12-12 01:36:32,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838416964] [2022-12-12 01:36:32,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:36:32,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-12 01:36:32,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:32,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-12 01:36:32,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2022-12-12 01:36:32,270 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:36:32,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 970 transitions, 63092 flow. Second operand has 34 states, 34 states have (on average 43.85294117647059) internal successors, (1491), 34 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:32,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:32,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:36:32,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:35,527 INFO L130 PetriNetUnfolder]: 773/2220 cut-off events. [2022-12-12 01:36:35,528 INFO L131 PetriNetUnfolder]: For 182669/184829 co-relation queries the response was YES. [2022-12-12 01:36:35,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57403 conditions, 2220 events. 773/2220 cut-off events. For 182669/184829 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 17263 event pairs, 17 based on Foata normal form. 74/2171 useless extension candidates. Maximal degree in co-relation 54400. Up to 1194 conditions per place. [2022-12-12 01:36:35,556 INFO L137 encePairwiseOnDemand]: 59/80 looper letters, 466 selfloop transitions, 662 changer transitions 26/1187 dead transitions. [2022-12-12 01:36:35,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 1187 transitions, 80041 flow [2022-12-12 01:36:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-12-12 01:36:35,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-12-12 01:36:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 4122 transitions. [2022-12-12 01:36:35,559 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5855113636363637 [2022-12-12 01:36:35,559 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 402 predicate places. [2022-12-12 01:36:35,559 INFO L82 GeneralOperation]: Start removeDead. Operand has 473 places, 1187 transitions, 80041 flow [2022-12-12 01:36:35,605 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 464 places, 1161 transitions, 78414 flow [2022-12-12 01:36:35,606 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 1161 transitions, 78414 flow [2022-12-12 01:36:35,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 43.85294117647059) internal successors, (1491), 34 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:35,606 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:35,606 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:35,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 01:36:35,812 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,SelfDestructingSolverStorable34 [2022-12-12 01:36:35,812 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:35,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:35,813 INFO L85 PathProgramCache]: Analyzing trace with hash 6234893, now seen corresponding path program 4 times [2022-12-12 01:36:35,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:35,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814544684] [2022-12-12 01:36:35,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:35,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:36,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:36,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:36,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814544684] [2022-12-12 01:36:36,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814544684] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:36:36,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914256974] [2022-12-12 01:36:36,019 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 01:36:36,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:36:36,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:36:36,021 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) [2022-12-12 01:36:36,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 01:36:36,072 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 01:36:36,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:36:36,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-12 01:36:36,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:36:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:36,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:36:36,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:36,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914256974] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:36:36,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:36:36,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-12-12 01:36:36,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431983599] [2022-12-12 01:36:36,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:36:36,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-12 01:36:36,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:36,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-12 01:36:36,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2022-12-12 01:36:36,563 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:36:36,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 1161 transitions, 78414 flow. Second operand has 33 states, 33 states have (on average 43.78787878787879) internal successors, (1445), 33 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:36,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:36,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:36:36,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:38,136 INFO L130 PetriNetUnfolder]: 765/2212 cut-off events. [2022-12-12 01:36:38,137 INFO L131 PetriNetUnfolder]: For 184495/186589 co-relation queries the response was YES. [2022-12-12 01:36:38,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58824 conditions, 2212 events. 765/2212 cut-off events. For 184495/186589 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17263 event pairs, 15 based on Foata normal form. 40/2132 useless extension candidates. Maximal degree in co-relation 45546. Up to 1192 conditions per place. [2022-12-12 01:36:38,165 INFO L137 encePairwiseOnDemand]: 62/80 looper letters, 758 selfloop transitions, 383 changer transitions 11/1185 dead transitions. [2022-12-12 01:36:38,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 1185 transitions, 82255 flow [2022-12-12 01:36:38,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-12 01:36:38,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-12 01:36:38,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1752 transitions. [2022-12-12 01:36:38,168 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6083333333333333 [2022-12-12 01:36:38,168 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 428 predicate places. [2022-12-12 01:36:38,168 INFO L82 GeneralOperation]: Start removeDead. Operand has 499 places, 1185 transitions, 82255 flow [2022-12-12 01:36:38,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 496 places, 1174 transitions, 81501 flow [2022-12-12 01:36:38,213 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 1174 transitions, 81501 flow [2022-12-12 01:36:38,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 43.78787878787879) internal successors, (1445), 33 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:38,213 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:38,213 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:38,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-12 01:36:38,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:36:38,415 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:38,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:38,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1088346261, now seen corresponding path program 5 times [2022-12-12 01:36:38,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:38,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912870936] [2022-12-12 01:36:38,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:38,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:38,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:38,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:38,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912870936] [2022-12-12 01:36:38,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912870936] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:36:38,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115838410] [2022-12-12 01:36:38,624 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 01:36:38,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:36:38,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:36:38,625 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) [2022-12-12 01:36:38,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 01:36:38,681 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 01:36:38,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:36:38,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-12 01:36:38,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:36:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:38,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 01:36:38,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115838410] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:36:38,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 01:36:38,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2022-12-12 01:36:38,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808660594] [2022-12-12 01:36:38,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:36:38,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-12 01:36:38,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:38,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-12 01:36:38,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2022-12-12 01:36:38,924 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:36:38,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 1174 transitions, 81501 flow. Second operand has 15 states, 15 states have (on average 45.93333333333333) internal successors, (689), 15 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:38,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:38,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:36:38,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:39,961 INFO L130 PetriNetUnfolder]: 773/2194 cut-off events. [2022-12-12 01:36:39,961 INFO L131 PetriNetUnfolder]: For 193693/196213 co-relation queries the response was YES. [2022-12-12 01:36:39,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60987 conditions, 2194 events. 773/2194 cut-off events. For 193693/196213 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17014 event pairs, 19 based on Foata normal form. 29/2093 useless extension candidates. Maximal degree in co-relation 47520. Up to 1201 conditions per place. [2022-12-12 01:36:39,990 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 736 selfloop transitions, 470 changer transitions 21/1262 dead transitions. [2022-12-12 01:36:39,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 1262 transitions, 90029 flow [2022-12-12 01:36:39,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-12 01:36:39,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-12 01:36:39,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 859 transitions. [2022-12-12 01:36:39,991 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6316176470588235 [2022-12-12 01:36:39,992 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 441 predicate places. [2022-12-12 01:36:39,992 INFO L82 GeneralOperation]: Start removeDead. Operand has 512 places, 1262 transitions, 90029 flow [2022-12-12 01:36:40,037 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 504 places, 1241 transitions, 88563 flow [2022-12-12 01:36:40,037 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 1241 transitions, 88563 flow [2022-12-12 01:36:40,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 45.93333333333333) internal successors, (689), 15 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:40,038 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:40,038 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:40,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-12 01:36:40,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:36:40,243 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:40,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:40,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1056444899, now seen corresponding path program 6 times [2022-12-12 01:36:40,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:40,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507517601] [2022-12-12 01:36:40,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:40,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:40,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:40,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:40,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507517601] [2022-12-12 01:36:40,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507517601] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:36:40,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015202213] [2022-12-12 01:36:40,418 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 01:36:40,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:36:40,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:36:40,419 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) [2022-12-12 01:36:40,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 01:36:40,470 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-12 01:36:40,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:36:40,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 01:36:40,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:36:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:40,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:36:41,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:41,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015202213] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:36:41,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:36:41,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-12-12 01:36:41,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546540789] [2022-12-12 01:36:41,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:36:41,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-12 01:36:41,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:41,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-12 01:36:41,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=983, Unknown=0, NotChecked=0, Total=1122 [2022-12-12 01:36:41,128 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:36:41,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 1241 transitions, 88563 flow. Second operand has 34 states, 34 states have (on average 43.85294117647059) internal successors, (1491), 34 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:41,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:41,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:36:41,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:43,723 INFO L130 PetriNetUnfolder]: 782/2248 cut-off events. [2022-12-12 01:36:43,723 INFO L131 PetriNetUnfolder]: For 207443/210707 co-relation queries the response was YES. [2022-12-12 01:36:43,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63781 conditions, 2248 events. 782/2248 cut-off events. For 207443/210707 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17756 event pairs, 18 based on Foata normal form. 73/2193 useless extension candidates. Maximal degree in co-relation 51523. Up to 1221 conditions per place. [2022-12-12 01:36:43,751 INFO L137 encePairwiseOnDemand]: 60/80 looper letters, 542 selfloop transitions, 642 changer transitions 68/1285 dead transitions. [2022-12-12 01:36:43,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 1285 transitions, 94144 flow [2022-12-12 01:36:43,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-12-12 01:36:43,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2022-12-12 01:36:43,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 3114 transitions. [2022-12-12 01:36:43,754 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5897727272727272 [2022-12-12 01:36:43,754 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 498 predicate places. [2022-12-12 01:36:43,754 INFO L82 GeneralOperation]: Start removeDead. Operand has 569 places, 1285 transitions, 94144 flow [2022-12-12 01:36:43,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 547 places, 1217 transitions, 89058 flow [2022-12-12 01:36:43,850 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 1217 transitions, 89058 flow [2022-12-12 01:36:43,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 43.85294117647059) internal successors, (1491), 34 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:43,851 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:43,851 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:43,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-12 01:36:44,051 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,SelfDestructingSolverStorable37 [2022-12-12 01:36:44,052 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:44,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:44,052 INFO L85 PathProgramCache]: Analyzing trace with hash 630968735, now seen corresponding path program 7 times [2022-12-12 01:36:44,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:44,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175677032] [2022-12-12 01:36:44,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:44,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:44,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:44,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:44,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175677032] [2022-12-12 01:36:44,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175677032] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:36:44,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635735079] [2022-12-12 01:36:44,238 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 01:36:44,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:36:44,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:36:44,239 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) [2022-12-12 01:36:44,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 01:36:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:44,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 01:36:44,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:36:44,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:44,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:36:44,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:44,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635735079] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:36:44,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:36:44,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-12-12 01:36:44,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105278625] [2022-12-12 01:36:44,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:36:44,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-12 01:36:44,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:44,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-12 01:36:44,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-12-12 01:36:44,958 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:36:44,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 1217 transitions, 89058 flow. Second operand has 34 states, 34 states have (on average 43.794117647058826) internal successors, (1489), 34 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:44,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:44,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:36:44,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:54,753 INFO L130 PetriNetUnfolder]: 1176/3170 cut-off events. [2022-12-12 01:36:54,753 INFO L131 PetriNetUnfolder]: For 288542/292429 co-relation queries the response was YES. [2022-12-12 01:36:54,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94770 conditions, 3170 events. 1176/3170 cut-off events. For 288542/292429 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 26234 event pairs, 17 based on Foata normal form. 91/3062 useless extension candidates. Maximal degree in co-relation 76178. Up to 1721 conditions per place. [2022-12-12 01:36:54,799 INFO L137 encePairwiseOnDemand]: 57/80 looper letters, 633 selfloop transitions, 1282 changer transitions 23/1971 dead transitions. [2022-12-12 01:36:54,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 765 places, 1971 transitions, 147908 flow [2022-12-12 01:36:54,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2022-12-12 01:36:54,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2022-12-12 01:36:54,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 9983 transitions. [2022-12-12 01:36:54,806 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5698059360730594 [2022-12-12 01:36:54,806 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 694 predicate places. [2022-12-12 01:36:54,806 INFO L82 GeneralOperation]: Start removeDead. Operand has 765 places, 1971 transitions, 147908 flow [2022-12-12 01:36:54,887 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 757 places, 1948 transitions, 146252 flow [2022-12-12 01:36:54,887 INFO L495 AbstractCegarLoop]: Abstraction has has 757 places, 1948 transitions, 146252 flow [2022-12-12 01:36:54,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 43.794117647058826) internal successors, (1489), 34 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:54,888 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:54,888 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:54,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-12 01:36:55,088 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,SelfDestructingSolverStorable38 [2022-12-12 01:36:55,089 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:55,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:55,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1468224917, now seen corresponding path program 8 times [2022-12-12 01:36:55,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:55,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619026914] [2022-12-12 01:36:55,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:55,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:36:55,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:55,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:36:55,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619026914] [2022-12-12 01:36:55,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619026914] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:36:55,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443058246] [2022-12-12 01:36:55,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 01:36:55,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:36:55,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:36:55,251 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) [2022-12-12 01:36:55,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-12 01:36:55,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 01:36:55,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:36:55,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 01:36:55,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:36:55,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:55,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:36:55,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:36:55,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443058246] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:36:55,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:36:55,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-12-12 01:36:55,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879014711] [2022-12-12 01:36:55,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:36:55,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-12 01:36:55,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:36:55,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-12 01:36:55,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-12-12 01:36:55,990 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:36:55,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 757 places, 1948 transitions, 146252 flow. Second operand has 34 states, 34 states have (on average 43.794117647058826) internal successors, (1489), 34 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:55,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:36:55,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:36:55,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:36:59,472 INFO L130 PetriNetUnfolder]: 1318/3552 cut-off events. [2022-12-12 01:36:59,472 INFO L131 PetriNetUnfolder]: For 316167/319559 co-relation queries the response was YES. [2022-12-12 01:36:59,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107784 conditions, 3552 events. 1318/3552 cut-off events. For 316167/319559 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 30051 event pairs, 22 based on Foata normal form. 75/3387 useless extension candidates. Maximal degree in co-relation 88407. Up to 1867 conditions per place. [2022-12-12 01:36:59,527 INFO L137 encePairwiseOnDemand]: 59/80 looper letters, 603 selfloop transitions, 1667 changer transitions 15/2318 dead transitions. [2022-12-12 01:36:59,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 816 places, 2318 transitions, 177625 flow [2022-12-12 01:36:59,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-12 01:36:59,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-12-12 01:36:59,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 2758 transitions. [2022-12-12 01:36:59,533 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5745833333333333 [2022-12-12 01:36:59,534 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 745 predicate places. [2022-12-12 01:36:59,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 816 places, 2318 transitions, 177625 flow [2022-12-12 01:36:59,638 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 812 places, 2303 transitions, 176455 flow [2022-12-12 01:36:59,638 INFO L495 AbstractCegarLoop]: Abstraction has has 812 places, 2303 transitions, 176455 flow [2022-12-12 01:36:59,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 43.794117647058826) internal successors, (1489), 34 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:36:59,639 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:36:59,639 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:36:59,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-12 01:36:59,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-12-12 01:36:59,839 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:36:59,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:36:59,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1059433295, now seen corresponding path program 9 times [2022-12-12 01:36:59,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:36:59,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18650191] [2022-12-12 01:36:59,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:36:59,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:36:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:00,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:00,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:00,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18650191] [2022-12-12 01:37:00,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18650191] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:37:00,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92411386] [2022-12-12 01:37:00,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 01:37:00,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:37:00,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:37:00,097 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:37:00,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-12 01:37:00,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 01:37:00,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:37:00,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-12 01:37:00,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:37:00,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:00,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 01:37:00,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92411386] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:37:00,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 01:37:00,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2022-12-12 01:37:00,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702819596] [2022-12-12 01:37:00,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:37:00,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-12 01:37:00,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:00,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-12 01:37:00,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2022-12-12 01:37:00,397 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:37:00,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 812 places, 2303 transitions, 176455 flow. Second operand has 15 states, 15 states have (on average 45.93333333333333) internal successors, (689), 15 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:37:00,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:00,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:37:00,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:03,212 INFO L130 PetriNetUnfolder]: 1414/3806 cut-off events. [2022-12-12 01:37:03,213 INFO L131 PetriNetUnfolder]: For 346621/350730 co-relation queries the response was YES. [2022-12-12 01:37:03,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118995 conditions, 3806 events. 1414/3806 cut-off events. For 346621/350730 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 32794 event pairs, 22 based on Foata normal form. 40/3593 useless extension candidates. Maximal degree in co-relation 103755. Up to 2019 conditions per place. [2022-12-12 01:37:03,282 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 1109 selfloop transitions, 1325 changer transitions 17/2486 dead transitions. [2022-12-12 01:37:03,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 831 places, 2486 transitions, 195141 flow [2022-12-12 01:37:03,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-12 01:37:03,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-12 01:37:03,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1003 transitions. [2022-12-12 01:37:03,284 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.626875 [2022-12-12 01:37:03,284 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 760 predicate places. [2022-12-12 01:37:03,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 831 places, 2486 transitions, 195141 flow [2022-12-12 01:37:03,408 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 828 places, 2469 transitions, 193779 flow [2022-12-12 01:37:03,408 INFO L495 AbstractCegarLoop]: Abstraction has has 828 places, 2469 transitions, 193779 flow [2022-12-12 01:37:03,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 45.93333333333333) internal successors, (689), 15 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:37:03,409 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:03,409 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:03,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-12 01:37:03,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-12-12 01:37:03,609 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:03,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:03,610 INFO L85 PathProgramCache]: Analyzing trace with hash -308126685, now seen corresponding path program 10 times [2022-12-12 01:37:03,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:03,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888619534] [2022-12-12 01:37:03,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:03,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:03,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:03,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:03,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888619534] [2022-12-12 01:37:03,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888619534] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:37:03,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72659289] [2022-12-12 01:37:03,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 01:37:03,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:37:03,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:37:03,782 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:37:03,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-12 01:37:03,838 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 01:37:03,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:37:03,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-12 01:37:03,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:37:04,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:04,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:37:04,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:04,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72659289] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:37:04,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:37:04,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-12-12 01:37:04,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797543028] [2022-12-12 01:37:04,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:37:04,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-12 01:37:04,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:04,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-12 01:37:04,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=934, Unknown=0, NotChecked=0, Total=1056 [2022-12-12 01:37:04,367 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:37:04,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 828 places, 2469 transitions, 193779 flow. Second operand has 33 states, 33 states have (on average 43.878787878787875) internal successors, (1448), 33 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:37:04,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:04,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:37:04,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:10,719 INFO L130 PetriNetUnfolder]: 1511/4075 cut-off events. [2022-12-12 01:37:10,719 INFO L131 PetriNetUnfolder]: For 395673/400104 co-relation queries the response was YES. [2022-12-12 01:37:10,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130710 conditions, 4075 events. 1511/4075 cut-off events. For 395673/400104 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 35664 event pairs, 25 based on Foata normal form. 45/3850 useless extension candidates. Maximal degree in co-relation 105120. Up to 2155 conditions per place. [2022-12-12 01:37:10,781 INFO L137 encePairwiseOnDemand]: 60/80 looper letters, 1364 selfloop transitions, 1280 changer transitions 8/2685 dead transitions. [2022-12-12 01:37:10,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 928 places, 2685 transitions, 214722 flow [2022-12-12 01:37:10,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-12-12 01:37:10,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2022-12-12 01:37:10,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 4678 transitions. [2022-12-12 01:37:10,785 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5789603960396039 [2022-12-12 01:37:10,785 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 857 predicate places. [2022-12-12 01:37:10,785 INFO L82 GeneralOperation]: Start removeDead. Operand has 928 places, 2685 transitions, 214722 flow [2022-12-12 01:37:11,016 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 925 places, 2677 transitions, 214100 flow [2022-12-12 01:37:11,016 INFO L495 AbstractCegarLoop]: Abstraction has has 925 places, 2677 transitions, 214100 flow [2022-12-12 01:37:11,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 43.878787878787875) internal successors, (1448), 33 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:37:11,017 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:11,017 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:11,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-12 01:37:11,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:37:11,222 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:11,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:11,223 INFO L85 PathProgramCache]: Analyzing trace with hash 13921031, now seen corresponding path program 11 times [2022-12-12 01:37:11,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:11,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805778709] [2022-12-12 01:37:11,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:11,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:11,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:11,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:11,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805778709] [2022-12-12 01:37:11,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805778709] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:37:11,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825728123] [2022-12-12 01:37:11,405 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 01:37:11,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:37:11,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:37:11,406 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:37:11,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-12 01:37:11,463 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 01:37:11,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:37:11,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 01:37:11,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:37:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:11,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:37:12,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:12,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825728123] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:37:12,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:37:12,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-12-12 01:37:12,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029914188] [2022-12-12 01:37:12,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:37:12,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-12 01:37:12,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:12,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-12 01:37:12,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=983, Unknown=0, NotChecked=0, Total=1122 [2022-12-12 01:37:12,153 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:37:12,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 925 places, 2677 transitions, 214100 flow. Second operand has 34 states, 34 states have (on average 43.8235294117647) internal successors, (1490), 34 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:37:12,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:12,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:37:12,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:20,997 INFO L130 PetriNetUnfolder]: 1510/4112 cut-off events. [2022-12-12 01:37:20,997 INFO L131 PetriNetUnfolder]: For 404937/409518 co-relation queries the response was YES. [2022-12-12 01:37:21,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134643 conditions, 4112 events. 1510/4112 cut-off events. For 404937/409518 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 36205 event pairs, 26 based on Foata normal form. 93/3935 useless extension candidates. Maximal degree in co-relation 107917. Up to 2155 conditions per place. [2022-12-12 01:37:21,065 INFO L137 encePairwiseOnDemand]: 57/80 looper letters, 934 selfloop transitions, 1665 changer transitions 70/2702 dead transitions. [2022-12-12 01:37:21,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1072 places, 2702 transitions, 221228 flow [2022-12-12 01:37:21,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-12-12 01:37:21,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2022-12-12 01:37:21,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 6802 transitions. [2022-12-12 01:37:21,069 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5744932432432432 [2022-12-12 01:37:21,069 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 1001 predicate places. [2022-12-12 01:37:21,069 INFO L82 GeneralOperation]: Start removeDead. Operand has 1072 places, 2702 transitions, 221228 flow [2022-12-12 01:37:21,275 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1057 places, 2632 transitions, 215692 flow [2022-12-12 01:37:21,276 INFO L495 AbstractCegarLoop]: Abstraction has has 1057 places, 2632 transitions, 215692 flow [2022-12-12 01:37:21,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 43.8235294117647) internal successors, (1490), 34 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:37:21,277 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:21,277 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:21,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-12 01:37:21,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-12-12 01:37:21,479 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:21,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:21,479 INFO L85 PathProgramCache]: Analyzing trace with hash 914227451, now seen corresponding path program 12 times [2022-12-12 01:37:21,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:21,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089952015] [2022-12-12 01:37:21,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:21,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:21,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:21,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:21,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089952015] [2022-12-12 01:37:21,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089952015] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:37:21,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807083488] [2022-12-12 01:37:21,632 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 01:37:21,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:37:21,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:37:21,634 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:37:21,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-12 01:37:21,689 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-12 01:37:21,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:37:21,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 01:37:21,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:37:21,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:21,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:37:22,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:22,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807083488] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:37:22,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:37:22,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-12-12 01:37:22,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473057560] [2022-12-12 01:37:22,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:37:22,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-12 01:37:22,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:22,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-12 01:37:22,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2022-12-12 01:37:22,369 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:37:22,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1057 places, 2632 transitions, 215692 flow. Second operand has 34 states, 34 states have (on average 43.8235294117647) internal successors, (1490), 34 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:37:22,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:22,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:37:22,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:32,973 INFO L130 PetriNetUnfolder]: 1495/4089 cut-off events. [2022-12-12 01:37:32,973 INFO L131 PetriNetUnfolder]: For 413492/417753 co-relation queries the response was YES. [2022-12-12 01:37:32,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136296 conditions, 4089 events. 1495/4089 cut-off events. For 413492/417753 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 35973 event pairs, 23 based on Foata normal form. 96/3920 useless extension candidates. Maximal degree in co-relation 109280. Up to 2157 conditions per place. [2022-12-12 01:37:33,038 INFO L137 encePairwiseOnDemand]: 57/80 looper letters, 915 selfloop transitions, 1694 changer transitions 19/2661 dead transitions. [2022-12-12 01:37:33,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1246 places, 2661 transitions, 223290 flow [2022-12-12 01:37:33,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-12-12 01:37:33,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2022-12-12 01:37:33,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 8709 transitions. [2022-12-12 01:37:33,043 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5729605263157894 [2022-12-12 01:37:33,043 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 1175 predicate places. [2022-12-12 01:37:33,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 1246 places, 2661 transitions, 223290 flow [2022-12-12 01:37:33,167 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1239 places, 2642 transitions, 221703 flow [2022-12-12 01:37:33,167 INFO L495 AbstractCegarLoop]: Abstraction has has 1239 places, 2642 transitions, 221703 flow [2022-12-12 01:37:33,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 43.8235294117647) internal successors, (1490), 34 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:37:33,168 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:33,168 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:33,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-12 01:37:33,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:37:33,369 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:33,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:33,369 INFO L85 PathProgramCache]: Analyzing trace with hash 240232557, now seen corresponding path program 13 times [2022-12-12 01:37:33,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:33,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254043097] [2022-12-12 01:37:33,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:33,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:33,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:33,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:33,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254043097] [2022-12-12 01:37:33,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254043097] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:37:33,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542068031] [2022-12-12 01:37:33,531 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 01:37:33,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:37:33,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:37:33,533 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:37:33,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-12 01:37:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:33,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 01:37:33,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:37:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:33,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:37:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:34,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542068031] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:37:34,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:37:34,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-12-12 01:37:34,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676328983] [2022-12-12 01:37:34,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:37:34,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-12 01:37:34,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:34,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-12 01:37:34,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-12-12 01:37:34,267 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:37:34,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1239 places, 2642 transitions, 221703 flow. Second operand has 34 states, 34 states have (on average 43.85294117647059) internal successors, (1491), 34 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:37:34,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:34,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:37:34,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:42,605 INFO L130 PetriNetUnfolder]: 1532/4238 cut-off events. [2022-12-12 01:37:42,605 INFO L131 PetriNetUnfolder]: For 439825/443886 co-relation queries the response was YES. [2022-12-12 01:37:42,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144064 conditions, 4238 events. 1532/4238 cut-off events. For 439825/443886 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 38134 event pairs, 17 based on Foata normal form. 93/4065 useless extension candidates. Maximal degree in co-relation 126625. Up to 2227 conditions per place. [2022-12-12 01:37:42,671 INFO L137 encePairwiseOnDemand]: 58/80 looper letters, 936 selfloop transitions, 1706 changer transitions 53/2728 dead transitions. [2022-12-12 01:37:42,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1383 places, 2728 transitions, 234216 flow [2022-12-12 01:37:42,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-12-12 01:37:42,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2022-12-12 01:37:42,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 6637 transitions. [2022-12-12 01:37:42,675 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5721551724137931 [2022-12-12 01:37:42,675 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 1312 predicate places. [2022-12-12 01:37:42,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 1383 places, 2728 transitions, 234216 flow [2022-12-12 01:37:42,829 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1373 places, 2675 transitions, 229627 flow [2022-12-12 01:37:42,829 INFO L495 AbstractCegarLoop]: Abstraction has has 1373 places, 2675 transitions, 229627 flow [2022-12-12 01:37:42,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 43.85294117647059) internal successors, (1491), 34 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:37:42,830 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:42,830 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:42,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-12 01:37:43,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:37:43,031 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:43,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:43,033 INFO L85 PathProgramCache]: Analyzing trace with hash -2046627769, now seen corresponding path program 14 times [2022-12-12 01:37:43,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:43,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203756999] [2022-12-12 01:37:43,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:43,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:43,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:43,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203756999] [2022-12-12 01:37:43,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203756999] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:37:43,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857641740] [2022-12-12 01:37:43,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 01:37:43,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:37:43,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:37:43,195 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:37:43,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-12 01:37:43,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 01:37:43,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:37:43,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 01:37:43,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:37:43,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:43,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:37:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:43,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857641740] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:37:43,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:37:43,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-12-12 01:37:43,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224685908] [2022-12-12 01:37:43,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:37:43,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-12 01:37:43,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:43,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-12 01:37:43,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=971, Unknown=0, NotChecked=0, Total=1122 [2022-12-12 01:37:43,899 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:37:43,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1373 places, 2675 transitions, 229627 flow. Second operand has 34 states, 34 states have (on average 43.73529411764706) internal successors, (1487), 34 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:37:43,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:43,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:37:43,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:37:54,619 INFO L130 PetriNetUnfolder]: 1509/4088 cut-off events. [2022-12-12 01:37:54,619 INFO L131 PetriNetUnfolder]: For 433244/438400 co-relation queries the response was YES. [2022-12-12 01:37:54,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144973 conditions, 4088 events. 1509/4088 cut-off events. For 433244/438400 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 36119 event pairs, 34 based on Foata normal form. 82/3893 useless extension candidates. Maximal degree in co-relation 127142. Up to 2198 conditions per place. [2022-12-12 01:37:54,686 INFO L137 encePairwiseOnDemand]: 57/80 looper letters, 945 selfloop transitions, 1675 changer transitions 38/2691 dead transitions. [2022-12-12 01:37:54,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1563 places, 2691 transitions, 236217 flow [2022-12-12 01:37:54,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-12-12 01:37:54,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2022-12-12 01:37:54,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 8753 transitions. [2022-12-12 01:37:54,691 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5728403141361257 [2022-12-12 01:37:54,692 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 1492 predicate places. [2022-12-12 01:37:54,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 1563 places, 2691 transitions, 236217 flow [2022-12-12 01:37:54,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1538 places, 2653 transitions, 233099 flow [2022-12-12 01:37:54,815 INFO L495 AbstractCegarLoop]: Abstraction has has 1538 places, 2653 transitions, 233099 flow [2022-12-12 01:37:54,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 43.73529411764706) internal successors, (1487), 34 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:37:54,816 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:37:54,816 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:37:54,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-12 01:37:55,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-12-12 01:37:55,016 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:37:55,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:37:55,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1973319333, now seen corresponding path program 15 times [2022-12-12 01:37:55,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:37:55,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837945269] [2022-12-12 01:37:55,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:37:55,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:37:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:37:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:55,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:37:55,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837945269] [2022-12-12 01:37:55,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837945269] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:37:55,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959080438] [2022-12-12 01:37:55,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 01:37:55,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:37:55,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:37:55,167 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:37:55,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-12 01:37:55,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 01:37:55,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:37:55,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-12 01:37:55,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:37:55,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:55,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:37:55,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:37:55,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959080438] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:37:55,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:37:55,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-12-12 01:37:55,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141650529] [2022-12-12 01:37:55,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:37:55,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-12 01:37:55,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:37:55,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-12 01:37:55,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-12-12 01:37:55,718 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:37:55,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1538 places, 2653 transitions, 233099 flow. Second operand has 33 states, 33 states have (on average 43.84848484848485) internal successors, (1447), 33 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:37:55,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:37:55,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:37:55,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:00,631 INFO L130 PetriNetUnfolder]: 1624/4504 cut-off events. [2022-12-12 01:38:00,631 INFO L131 PetriNetUnfolder]: For 515220/522253 co-relation queries the response was YES. [2022-12-12 01:38:00,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162076 conditions, 4504 events. 1624/4504 cut-off events. For 515220/522253 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 41733 event pairs, 15 based on Foata normal form. 114/4348 useless extension candidates. Maximal degree in co-relation 122519. Up to 2432 conditions per place. [2022-12-12 01:38:00,704 INFO L137 encePairwiseOnDemand]: 62/80 looper letters, 1029 selfloop transitions, 1587 changer transitions 242/2891 dead transitions. [2022-12-12 01:38:00,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1591 places, 2891 transitions, 260340 flow [2022-12-12 01:38:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-12 01:38:00,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-12-12 01:38:00,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 2525 transitions. [2022-12-12 01:38:00,706 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5844907407407407 [2022-12-12 01:38:00,706 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 1520 predicate places. [2022-12-12 01:38:00,706 INFO L82 GeneralOperation]: Start removeDead. Operand has 1591 places, 2891 transitions, 260340 flow [2022-12-12 01:38:00,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1584 places, 2649 transitions, 237772 flow [2022-12-12 01:38:00,837 INFO L495 AbstractCegarLoop]: Abstraction has has 1584 places, 2649 transitions, 237772 flow [2022-12-12 01:38:00,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 43.84848484848485) internal successors, (1447), 33 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:00,837 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:00,837 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:00,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-12 01:38:01,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:01,038 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:01,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:01,038 INFO L85 PathProgramCache]: Analyzing trace with hash -59649741, now seen corresponding path program 16 times [2022-12-12 01:38:01,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:01,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600950515] [2022-12-12 01:38:01,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:01,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:01,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:01,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600950515] [2022-12-12 01:38:01,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600950515] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:38:01,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856632446] [2022-12-12 01:38:01,188 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 01:38:01,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:01,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:38:01,189 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:38:01,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-12 01:38:01,247 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 01:38:01,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:38:01,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-12 01:38:01,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:38:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:01,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:38:01,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:01,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856632446] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:38:01,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:38:01,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-12-12 01:38:01,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695963406] [2022-12-12 01:38:01,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:38:01,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-12 01:38:01,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:01,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-12 01:38:01,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2022-12-12 01:38:01,743 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:38:01,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1584 places, 2649 transitions, 237772 flow. Second operand has 33 states, 33 states have (on average 43.93939393939394) internal successors, (1450), 33 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:01,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:01,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:38:01,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:07,036 INFO L130 PetriNetUnfolder]: 1515/4092 cut-off events. [2022-12-12 01:38:07,036 INFO L131 PetriNetUnfolder]: For 456627/461753 co-relation queries the response was YES. [2022-12-12 01:38:07,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152260 conditions, 4092 events. 1515/4092 cut-off events. For 456627/461753 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 36271 event pairs, 25 based on Foata normal form. 44/3870 useless extension candidates. Maximal degree in co-relation 134009. Up to 2208 conditions per place. [2022-12-12 01:38:07,110 INFO L137 encePairwiseOnDemand]: 60/80 looper letters, 1535 selfloop transitions, 1098 changer transitions 46/2712 dead transitions. [2022-12-12 01:38:07,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1637 places, 2712 transitions, 248891 flow [2022-12-12 01:38:07,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-12 01:38:07,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-12-12 01:38:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 2588 transitions. [2022-12-12 01:38:07,112 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5990740740740741 [2022-12-12 01:38:07,112 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 1566 predicate places. [2022-12-12 01:38:07,112 INFO L82 GeneralOperation]: Start removeDead. Operand has 1637 places, 2712 transitions, 248891 flow [2022-12-12 01:38:07,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1619 places, 2666 transitions, 244610 flow [2022-12-12 01:38:07,362 INFO L495 AbstractCegarLoop]: Abstraction has has 1619 places, 2666 transitions, 244610 flow [2022-12-12 01:38:07,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 43.93939393939394) internal successors, (1450), 33 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:07,362 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:07,362 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:07,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-12-12 01:38:07,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:07,563 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:07,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:07,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1046924973, now seen corresponding path program 17 times [2022-12-12 01:38:07,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:07,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373851322] [2022-12-12 01:38:07,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:07,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:07,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:07,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373851322] [2022-12-12 01:38:07,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373851322] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:38:07,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965993437] [2022-12-12 01:38:07,722 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 01:38:07,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:07,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:38:07,736 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:38:07,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-12 01:38:07,798 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-12 01:38:07,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:38:07,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-12 01:38:07,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:38:08,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:08,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 01:38:08,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965993437] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:08,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 01:38:08,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2022-12-12 01:38:08,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795262617] [2022-12-12 01:38:08,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:08,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-12 01:38:08,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:08,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-12 01:38:08,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-12-12 01:38:08,010 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:38:08,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1619 places, 2666 transitions, 244610 flow. Second operand has 15 states, 15 states have (on average 45.93333333333333) internal successors, (689), 15 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:08,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:08,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:38:08,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:14,037 INFO L130 PetriNetUnfolder]: 1505/4081 cut-off events. [2022-12-12 01:38:14,037 INFO L131 PetriNetUnfolder]: For 468420/473066 co-relation queries the response was YES. [2022-12-12 01:38:14,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154595 conditions, 4081 events. 1505/4081 cut-off events. For 468420/473066 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 36127 event pairs, 20 based on Foata normal form. 38/3864 useless extension candidates. Maximal degree in co-relation 122249. Up to 2180 conditions per place. [2022-12-12 01:38:14,110 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 1000 selfloop transitions, 1634 changer transitions 25/2694 dead transitions. [2022-12-12 01:38:14,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1650 places, 2694 transitions, 252630 flow [2022-12-12 01:38:14,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-12 01:38:14,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-12 01:38:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1556 transitions. [2022-12-12 01:38:14,112 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6078125 [2022-12-12 01:38:14,112 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 1579 predicate places. [2022-12-12 01:38:14,112 INFO L82 GeneralOperation]: Start removeDead. Operand has 1650 places, 2694 transitions, 252630 flow [2022-12-12 01:38:14,253 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1647 places, 2669 transitions, 250190 flow [2022-12-12 01:38:14,253 INFO L495 AbstractCegarLoop]: Abstraction has has 1647 places, 2669 transitions, 250190 flow [2022-12-12 01:38:14,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 45.93333333333333) internal successors, (689), 15 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:14,254 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:14,254 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:14,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-12 01:38:14,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:14,454 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:14,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:14,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1869625019, now seen corresponding path program 18 times [2022-12-12 01:38:14,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:14,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446214423] [2022-12-12 01:38:14,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:14,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:14,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:14,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446214423] [2022-12-12 01:38:14,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446214423] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:38:14,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159158279] [2022-12-12 01:38:14,744 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 01:38:14,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:14,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:38:14,745 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:38:14,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-12 01:38:14,804 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-12 01:38:14,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:38:14,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-12 01:38:14,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:38:15,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:15,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 01:38:15,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159158279] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 01:38:15,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 01:38:15,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2022-12-12 01:38:15,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109407358] [2022-12-12 01:38:15,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 01:38:15,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-12 01:38:15,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:15,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-12 01:38:15,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-12-12 01:38:15,025 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-12-12 01:38:15,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1647 places, 2669 transitions, 250190 flow. Second operand has 15 states, 15 states have (on average 45.93333333333333) internal successors, (689), 15 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:15,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:15,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-12-12 01:38:15,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:19,232 INFO L130 PetriNetUnfolder]: 1494/4064 cut-off events. [2022-12-12 01:38:19,233 INFO L131 PetriNetUnfolder]: For 490685/496749 co-relation queries the response was YES. [2022-12-12 01:38:19,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157543 conditions, 4064 events. 1494/4064 cut-off events. For 490685/496749 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 35911 event pairs, 22 based on Foata normal form. 62/3869 useless extension candidates. Maximal degree in co-relation 149935. Up to 2180 conditions per place. [2022-12-12 01:38:19,307 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 977 selfloop transitions, 1609 changer transitions 66/2687 dead transitions. [2022-12-12 01:38:19,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1678 places, 2687 transitions, 257158 flow [2022-12-12 01:38:19,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-12 01:38:19,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-12 01:38:19,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1560 transitions. [2022-12-12 01:38:19,308 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.609375 [2022-12-12 01:38:19,309 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 1607 predicate places. [2022-12-12 01:38:19,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 1678 places, 2687 transitions, 257158 flow [2022-12-12 01:38:19,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1668 places, 2621 transitions, 250642 flow [2022-12-12 01:38:19,449 INFO L495 AbstractCegarLoop]: Abstraction has has 1668 places, 2621 transitions, 250642 flow [2022-12-12 01:38:19,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 45.93333333333333) internal successors, (689), 15 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:19,450 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:19,450 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:19,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-12-12 01:38:19,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-12-12 01:38:19,651 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:19,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:19,651 INFO L85 PathProgramCache]: Analyzing trace with hash 572037963, now seen corresponding path program 19 times [2022-12-12 01:38:19,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:19,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784650561] [2022-12-12 01:38:19,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:19,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:19,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:19,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784650561] [2022-12-12 01:38:19,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784650561] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:38:19,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445109577] [2022-12-12 01:38:19,797 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 01:38:19,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:19,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:38:19,798 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:38:19,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-12 01:38:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:19,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 01:38:19,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:38:20,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:20,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:38:20,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:20,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445109577] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:38:20,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:38:20,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-12-12 01:38:20,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76548348] [2022-12-12 01:38:20,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:38:20,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-12 01:38:20,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:20,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-12 01:38:20,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2022-12-12 01:38:20,535 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:38:20,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1668 places, 2621 transitions, 250642 flow. Second operand has 34 states, 34 states have (on average 43.6764705882353) internal successors, (1485), 34 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:20,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:20,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:38:20,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:26,016 INFO L130 PetriNetUnfolder]: 1671/4291 cut-off events. [2022-12-12 01:38:26,017 INFO L131 PetriNetUnfolder]: For 484603/490017 co-relation queries the response was YES. [2022-12-12 01:38:26,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175074 conditions, 4291 events. 1671/4291 cut-off events. For 484603/490017 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 37050 event pairs, 24 based on Foata normal form. 83/4097 useless extension candidates. Maximal degree in co-relation 167827. Up to 2477 conditions per place. [2022-12-12 01:38:26,102 INFO L137 encePairwiseOnDemand]: 60/80 looper letters, 1381 selfloop transitions, 1573 changer transitions 9/2996 dead transitions. [2022-12-12 01:38:26,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1720 places, 2996 transitions, 292384 flow [2022-12-12 01:38:26,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-12 01:38:26,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-12-12 01:38:26,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2466 transitions. [2022-12-12 01:38:26,104 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5816037735849057 [2022-12-12 01:38:26,104 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 1649 predicate places. [2022-12-12 01:38:26,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 1720 places, 2996 transitions, 292384 flow [2022-12-12 01:38:26,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1715 places, 2987 transitions, 291514 flow [2022-12-12 01:38:26,272 INFO L495 AbstractCegarLoop]: Abstraction has has 1715 places, 2987 transitions, 291514 flow [2022-12-12 01:38:26,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 43.6764705882353) internal successors, (1485), 34 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:26,272 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:26,272 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:26,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-12-12 01:38:26,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:26,473 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:26,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:26,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1106280301, now seen corresponding path program 20 times [2022-12-12 01:38:26,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:26,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510205761] [2022-12-12 01:38:26,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:26,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:26,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:26,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:26,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510205761] [2022-12-12 01:38:26,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510205761] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:38:26,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215276232] [2022-12-12 01:38:26,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 01:38:26,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:26,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:38:26,618 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:38:26,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-12 01:38:26,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 01:38:26,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:38:26,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 01:38:26,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:38:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:26,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:38:27,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:27,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215276232] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:38:27,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:38:27,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-12-12 01:38:27,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047835008] [2022-12-12 01:38:27,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:38:27,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-12 01:38:27,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:27,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-12 01:38:27,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2022-12-12 01:38:27,319 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:38:27,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1715 places, 2987 transitions, 291514 flow. Second operand has 34 states, 34 states have (on average 43.6764705882353) internal successors, (1485), 34 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:27,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:27,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:38:27,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:33,527 INFO L130 PetriNetUnfolder]: 1768/4533 cut-off events. [2022-12-12 01:38:33,527 INFO L131 PetriNetUnfolder]: For 510551/516448 co-relation queries the response was YES. [2022-12-12 01:38:33,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187882 conditions, 4533 events. 1768/4533 cut-off events. For 510551/516448 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 39215 event pairs, 24 based on Foata normal form. 85/4330 useless extension candidates. Maximal degree in co-relation 168065. Up to 2570 conditions per place. [2022-12-12 01:38:33,717 INFO L137 encePairwiseOnDemand]: 60/80 looper letters, 1513 selfloop transitions, 1640 changer transitions 10/3196 dead transitions. [2022-12-12 01:38:33,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1782 places, 3196 transitions, 316246 flow [2022-12-12 01:38:33,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-12 01:38:33,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2022-12-12 01:38:33,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 3115 transitions. [2022-12-12 01:38:33,720 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5726102941176471 [2022-12-12 01:38:33,720 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 1711 predicate places. [2022-12-12 01:38:33,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 1782 places, 3196 transitions, 316246 flow [2022-12-12 01:38:33,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1777 places, 3186 transitions, 315252 flow [2022-12-12 01:38:33,966 INFO L495 AbstractCegarLoop]: Abstraction has has 1777 places, 3186 transitions, 315252 flow [2022-12-12 01:38:33,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 43.6764705882353) internal successors, (1485), 34 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:33,966 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:33,966 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:33,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-12 01:38:34,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:34,167 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:34,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:34,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1029345111, now seen corresponding path program 21 times [2022-12-12 01:38:34,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:34,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770002420] [2022-12-12 01:38:34,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:34,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:34,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:34,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:34,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770002420] [2022-12-12 01:38:34,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770002420] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:38:34,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059635504] [2022-12-12 01:38:34,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 01:38:34,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:34,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:38:34,314 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:38:34,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-12 01:38:34,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-12 01:38:34,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:38:34,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 01:38:34,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:38:34,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:34,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:38:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:34,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059635504] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:38:34,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:38:34,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-12-12 01:38:34,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693431769] [2022-12-12 01:38:34,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:38:34,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-12 01:38:34,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:34,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-12 01:38:35,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=992, Unknown=0, NotChecked=0, Total=1122 [2022-12-12 01:38:35,000 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:38:35,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1777 places, 3186 transitions, 315252 flow. Second operand has 34 states, 34 states have (on average 43.73529411764706) internal successors, (1487), 34 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:35,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:35,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:38:35,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:44,370 INFO L130 PetriNetUnfolder]: 1929/4926 cut-off events. [2022-12-12 01:38:44,370 INFO L131 PetriNetUnfolder]: For 542639/547793 co-relation queries the response was YES. [2022-12-12 01:38:44,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207289 conditions, 4926 events. 1929/4926 cut-off events. For 542639/547793 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 43088 event pairs, 23 based on Foata normal form. 81/4709 useless extension candidates. Maximal degree in co-relation 174467. Up to 2746 conditions per place. [2022-12-12 01:38:44,474 INFO L137 encePairwiseOnDemand]: 59/80 looper letters, 1546 selfloop transitions, 1931 changer transitions 10/3520 dead transitions. [2022-12-12 01:38:44,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1863 places, 3520 transitions, 352956 flow [2022-12-12 01:38:44,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-12-12 01:38:44,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2022-12-12 01:38:44,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 3997 transitions. [2022-12-12 01:38:44,476 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5742816091954023 [2022-12-12 01:38:44,477 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 1792 predicate places. [2022-12-12 01:38:44,477 INFO L82 GeneralOperation]: Start removeDead. Operand has 1863 places, 3520 transitions, 352956 flow [2022-12-12 01:38:44,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1858 places, 3510 transitions, 351942 flow [2022-12-12 01:38:44,806 INFO L495 AbstractCegarLoop]: Abstraction has has 1858 places, 3510 transitions, 351942 flow [2022-12-12 01:38:44,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 43.73529411764706) internal successors, (1487), 34 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:44,807 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:44,807 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:44,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-12-12 01:38:45,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:45,007 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:45,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:45,008 INFO L85 PathProgramCache]: Analyzing trace with hash -372395885, now seen corresponding path program 22 times [2022-12-12 01:38:45,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:45,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386808038] [2022-12-12 01:38:45,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:45,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:45,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:45,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:45,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386808038] [2022-12-12 01:38:45,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386808038] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:38:45,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583672219] [2022-12-12 01:38:45,148 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 01:38:45,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:45,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:38:45,149 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:38:45,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-12 01:38:45,208 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 01:38:45,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:38:45,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-12 01:38:45,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:38:45,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:45,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:38:45,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:45,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583672219] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:38:45,655 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:38:45,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-12-12 01:38:45,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222589387] [2022-12-12 01:38:45,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:38:45,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-12 01:38:45,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:45,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-12 01:38:45,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2022-12-12 01:38:45,656 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:38:45,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1858 places, 3510 transitions, 351942 flow. Second operand has 32 states, 32 states have (on average 43.90625) internal successors, (1405), 32 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:45,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:45,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:38:45,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:38:53,627 INFO L130 PetriNetUnfolder]: 1944/4965 cut-off events. [2022-12-12 01:38:53,627 INFO L131 PetriNetUnfolder]: For 550855/555853 co-relation queries the response was YES. [2022-12-12 01:38:53,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213544 conditions, 4965 events. 1944/4965 cut-off events. For 550855/555853 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 43508 event pairs, 20 based on Foata normal form. 67/4734 useless extension candidates. Maximal degree in co-relation 192647. Up to 2774 conditions per place. [2022-12-12 01:38:53,737 INFO L137 encePairwiseOnDemand]: 60/80 looper letters, 2041 selfloop transitions, 1476 changer transitions 11/3561 dead transitions. [2022-12-12 01:38:53,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1897 places, 3561 transitions, 364184 flow [2022-12-12 01:38:53,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-12 01:38:53,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-12-12 01:38:53,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1853 transitions. [2022-12-12 01:38:53,738 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5790625 [2022-12-12 01:38:53,739 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 1826 predicate places. [2022-12-12 01:38:53,739 INFO L82 GeneralOperation]: Start removeDead. Operand has 1897 places, 3561 transitions, 364184 flow [2022-12-12 01:38:53,951 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1891 places, 3550 transitions, 363104 flow [2022-12-12 01:38:53,951 INFO L495 AbstractCegarLoop]: Abstraction has has 1891 places, 3550 transitions, 363104 flow [2022-12-12 01:38:53,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 43.90625) internal successors, (1405), 32 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:53,951 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:38:53,951 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:38:53,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-12 01:38:54,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:54,152 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:38:54,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:38:54,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1185612165, now seen corresponding path program 23 times [2022-12-12 01:38:54,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:38:54,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885825512] [2022-12-12 01:38:54,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:38:54,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:38:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:38:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:54,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:38:54,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885825512] [2022-12-12 01:38:54,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885825512] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:38:54,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572730292] [2022-12-12 01:38:54,452 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 01:38:54,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:38:54,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:38:54,456 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:38:54,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-12 01:38:54,514 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-12 01:38:54,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:38:54,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-12 01:38:54,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:38:54,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:54,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:38:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:38:54,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572730292] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:38:54,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:38:54,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-12-12 01:38:54,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467440629] [2022-12-12 01:38:54,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:38:54,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-12 01:38:54,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:38:54,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-12 01:38:54,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2022-12-12 01:38:54,965 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:38:54,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1891 places, 3550 transitions, 363104 flow. Second operand has 33 states, 33 states have (on average 43.78787878787879) internal successors, (1445), 33 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:38:54,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:38:54,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:38:54,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:02,405 INFO L130 PetriNetUnfolder]: 2068/5216 cut-off events. [2022-12-12 01:39:02,405 INFO L131 PetriNetUnfolder]: For 593153/598687 co-relation queries the response was YES. [2022-12-12 01:39:02,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230870 conditions, 5216 events. 2068/5216 cut-off events. For 593153/598687 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 45757 event pairs, 20 based on Foata normal form. 78/4968 useless extension candidates. Maximal degree in co-relation 209590. Up to 2945 conditions per place. [2022-12-12 01:39:02,530 INFO L137 encePairwiseOnDemand]: 61/80 looper letters, 1834 selfloop transitions, 1897 changer transitions 39/3803 dead transitions. [2022-12-12 01:39:02,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1920 places, 3803 transitions, 397256 flow [2022-12-12 01:39:02,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-12 01:39:02,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-12 01:39:02,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1408 transitions. [2022-12-12 01:39:02,531 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5866666666666667 [2022-12-12 01:39:02,532 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 1849 predicate places. [2022-12-12 01:39:02,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 1920 places, 3803 transitions, 397256 flow [2022-12-12 01:39:02,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1913 places, 3764 transitions, 393082 flow [2022-12-12 01:39:02,759 INFO L495 AbstractCegarLoop]: Abstraction has has 1913 places, 3764 transitions, 393082 flow [2022-12-12 01:39:02,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 43.78787878787879) internal successors, (1445), 33 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:39:02,759 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:02,760 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:02,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-12 01:39:02,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-12-12 01:39:02,961 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:02,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:02,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1661628523, now seen corresponding path program 24 times [2022-12-12 01:39:02,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:02,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567274213] [2022-12-12 01:39:02,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:02,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:03,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:03,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:03,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567274213] [2022-12-12 01:39:03,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567274213] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:39:03,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560942038] [2022-12-12 01:39:03,104 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 01:39:03,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:39:03,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:39:03,106 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:39:03,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-12 01:39:03,167 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-12 01:39:03,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:39:03,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 01:39:03,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:39:03,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:03,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:39:03,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:03,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560942038] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:39:03,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:39:03,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-12-12 01:39:03,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610038266] [2022-12-12 01:39:03,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:39:03,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-12 01:39:03,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:03,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-12 01:39:03,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2022-12-12 01:39:03,752 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:39:03,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1913 places, 3764 transitions, 393082 flow. Second operand has 32 states, 32 states have (on average 43.8125) internal successors, (1402), 32 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:39:03,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:03,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:39:03,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:39:21,690 INFO L130 PetriNetUnfolder]: 3159/7597 cut-off events. [2022-12-12 01:39:21,690 INFO L131 PetriNetUnfolder]: For 843512/850346 co-relation queries the response was YES. [2022-12-12 01:39:21,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346366 conditions, 7597 events. 3159/7597 cut-off events. For 843512/850346 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 68978 event pairs, 18 based on Foata normal form. 145/7216 useless extension candidates. Maximal degree in co-relation 305008. Up to 4129 conditions per place. [2022-12-12 01:39:21,861 INFO L137 encePairwiseOnDemand]: 57/80 looper letters, 1881 selfloop transitions, 3901 changer transitions 45/5860 dead transitions. [2022-12-12 01:39:21,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2068 places, 5860 transitions, 619015 flow [2022-12-12 01:39:21,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-12-12 01:39:21,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2022-12-12 01:39:21,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 7133 transitions. [2022-12-12 01:39:21,866 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5715544871794872 [2022-12-12 01:39:21,867 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 1997 predicate places. [2022-12-12 01:39:21,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 2068 places, 5860 transitions, 619015 flow [2022-12-12 01:39:22,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2059 places, 5815 transitions, 614184 flow [2022-12-12 01:39:22,218 INFO L495 AbstractCegarLoop]: Abstraction has has 2059 places, 5815 transitions, 614184 flow [2022-12-12 01:39:22,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 43.8125) internal successors, (1402), 32 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:39:22,218 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:39:22,218 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:39:22,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-12-12 01:39:22,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-12-12 01:39:22,419 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:39:22,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:39:22,419 INFO L85 PathProgramCache]: Analyzing trace with hash -681497277, now seen corresponding path program 25 times [2022-12-12 01:39:22,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:39:22,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391230102] [2022-12-12 01:39:22,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:39:22,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:39:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:22,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:22,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:39:22,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391230102] [2022-12-12 01:39:22,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391230102] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:39:22,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975974343] [2022-12-12 01:39:22,563 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 01:39:22,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:39:22,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:39:22,564 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:39:22,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-12 01:39:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:39:22,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 01:39:22,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:39:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:22,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:39:23,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:39:23,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975974343] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:39:23,284 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:39:23,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-12-12 01:39:23,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552606614] [2022-12-12 01:39:23,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:39:23,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-12 01:39:23,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:39:23,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-12 01:39:23,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=807, Unknown=0, NotChecked=0, Total=930 [2022-12-12 01:39:23,285 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:39:23,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2059 places, 5815 transitions, 614184 flow. Second operand has 31 states, 31 states have (on average 43.74193548387097) internal successors, (1356), 31 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:39:23,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:39:23,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:39:23,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:40:02,970 INFO L130 PetriNetUnfolder]: 5362/12412 cut-off events. [2022-12-12 01:40:02,970 INFO L131 PetriNetUnfolder]: For 1382886/1393373 co-relation queries the response was YES. [2022-12-12 01:40:03,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584069 conditions, 12412 events. 5362/12412 cut-off events. For 1382886/1393373 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 118940 event pairs, 28 based on Foata normal form. 175/11594 useless extension candidates. Maximal degree in co-relation 532001. Up to 6562 conditions per place. [2022-12-12 01:40:03,309 INFO L137 encePairwiseOnDemand]: 57/80 looper letters, 2498 selfloop transitions, 7290 changer transitions 37/9858 dead transitions. [2022-12-12 01:40:03,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2240 places, 9858 transitions, 1061833 flow [2022-12-12 01:40:03,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2022-12-12 01:40:03,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2022-12-12 01:40:03,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 8316 transitions. [2022-12-12 01:40:03,313 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5711538461538461 [2022-12-12 01:40:03,313 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 2169 predicate places. [2022-12-12 01:40:03,314 INFO L82 GeneralOperation]: Start removeDead. Operand has 2240 places, 9858 transitions, 1061833 flow [2022-12-12 01:40:03,957 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2236 places, 9821 transitions, 1057601 flow [2022-12-12 01:40:03,957 INFO L495 AbstractCegarLoop]: Abstraction has has 2236 places, 9821 transitions, 1057601 flow [2022-12-12 01:40:03,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 43.74193548387097) internal successors, (1356), 31 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:40:03,958 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:40:03,959 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:40:03,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-12-12 01:40:04,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-12-12 01:40:04,163 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:40:04,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:40:04,164 INFO L85 PathProgramCache]: Analyzing trace with hash -800607509, now seen corresponding path program 26 times [2022-12-12 01:40:04,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:40:04,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096574641] [2022-12-12 01:40:04,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:40:04,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:40:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:40:04,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:04,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:40:04,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096574641] [2022-12-12 01:40:04,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096574641] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:40:04,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110681247] [2022-12-12 01:40:04,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 01:40:04,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:40:04,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:40:04,313 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:40:04,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-12 01:40:04,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 01:40:04,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:40:04,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 01:40:04,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:40:04,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:04,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:40:04,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:40:04,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110681247] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:40:04,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:40:04,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-12-12 01:40:04,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368748566] [2022-12-12 01:40:04,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:40:04,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-12 01:40:04,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:40:04,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-12 01:40:04,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2022-12-12 01:40:04,952 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:40:04,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2236 places, 9821 transitions, 1057601 flow. Second operand has 33 states, 33 states have (on average 43.696969696969695) internal successors, (1442), 33 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:40:04,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:40:04,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:40:04,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:41:29,627 INFO L130 PetriNetUnfolder]: 7246/16336 cut-off events. [2022-12-12 01:41:29,627 INFO L131 PetriNetUnfolder]: For 1774894/1784921 co-relation queries the response was YES. [2022-12-12 01:41:29,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795705 conditions, 16336 events. 7246/16336 cut-off events. For 1774894/1784921 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 160573 event pairs, 40 based on Foata normal form. 113/15057 useless extension candidates. Maximal degree in co-relation 779937. Up to 8668 conditions per place. [2022-12-12 01:41:30,015 INFO L137 encePairwiseOnDemand]: 57/80 looper letters, 4914 selfloop transitions, 8359 changer transitions 111/13417 dead transitions. [2022-12-12 01:41:30,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2411 places, 13417 transitions, 1474341 flow [2022-12-12 01:41:30,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2022-12-12 01:41:30,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2022-12-12 01:41:30,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 8063 transitions. [2022-12-12 01:41:30,020 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.57265625 [2022-12-12 01:41:30,020 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 2340 predicate places. [2022-12-12 01:41:30,020 INFO L82 GeneralOperation]: Start removeDead. Operand has 2411 places, 13417 transitions, 1474341 flow [2022-12-12 01:41:30,885 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2407 places, 13306 transitions, 1461447 flow [2022-12-12 01:41:30,886 INFO L495 AbstractCegarLoop]: Abstraction has has 2407 places, 13306 transitions, 1461447 flow [2022-12-12 01:41:30,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 43.696969696969695) internal successors, (1442), 33 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:41:30,886 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:41:30,886 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:41:30,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-12-12 01:41:31,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:41:31,087 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:41:31,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:41:31,087 INFO L85 PathProgramCache]: Analyzing trace with hash 96971123, now seen corresponding path program 27 times [2022-12-12 01:41:31,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:41:31,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602710824] [2022-12-12 01:41:31,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:41:31,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:41:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:41:31,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:31,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:41:31,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602710824] [2022-12-12 01:41:31,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602710824] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:41:31,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935149271] [2022-12-12 01:41:31,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 01:41:31,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:41:31,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:41:31,230 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:41:31,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-12 01:41:31,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 01:41:31,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:41:31,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 01:41:31,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:41:31,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:31,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:41:31,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:41:31,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935149271] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:41:31,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:41:31,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-12-12 01:41:31,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462854876] [2022-12-12 01:41:31,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:41:31,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-12 01:41:31,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:41:31,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-12 01:41:31,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2022-12-12 01:41:31,991 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:41:31,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2407 places, 13306 transitions, 1461447 flow. Second operand has 33 states, 33 states have (on average 43.75757575757576) internal successors, (1444), 33 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:41:31,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:41:31,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:41:31,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:43:29,197 INFO L130 PetriNetUnfolder]: 7613/17284 cut-off events. [2022-12-12 01:43:29,197 INFO L131 PetriNetUnfolder]: For 1962047/1973952 co-relation queries the response was YES. [2022-12-12 01:43:29,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854877 conditions, 17284 events. 7613/17284 cut-off events. For 1962047/1973952 co-relation queries the response was YES. Maximal size of possible extension queue 948. Compared 173549 event pairs, 37 based on Foata normal form. 122/15970 useless extension candidates. Maximal degree in co-relation 839230. Up to 9246 conditions per place. [2022-12-12 01:43:29,671 INFO L137 encePairwiseOnDemand]: 57/80 looper letters, 6502 selfloop transitions, 7474 changer transitions 103/14112 dead transitions. [2022-12-12 01:43:29,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2487 places, 14112 transitions, 1577164 flow [2022-12-12 01:43:29,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-12-12 01:43:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2022-12-12 01:43:29,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 3747 transitions. [2022-12-12 01:43:29,673 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5782407407407407 [2022-12-12 01:43:29,674 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 2416 predicate places. [2022-12-12 01:43:29,674 INFO L82 GeneralOperation]: Start removeDead. Operand has 2487 places, 14112 transitions, 1577164 flow [2022-12-12 01:43:30,672 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2472 places, 14009 transitions, 1565367 flow [2022-12-12 01:43:30,672 INFO L495 AbstractCegarLoop]: Abstraction has has 2472 places, 14009 transitions, 1565367 flow [2022-12-12 01:43:30,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 43.75757575757576) internal successors, (1444), 33 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:43:30,673 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:43:30,673 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:43:30,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-12-12 01:43:30,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-12-12 01:43:30,874 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:43:30,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:43:30,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1987161419, now seen corresponding path program 28 times [2022-12-12 01:43:30,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:43:30,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934377179] [2022-12-12 01:43:30,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:43:30,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:43:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:43:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:43:31,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:43:31,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934377179] [2022-12-12 01:43:31,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934377179] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:43:31,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137124250] [2022-12-12 01:43:31,012 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 01:43:31,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:43:31,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:43:31,014 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:43:31,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-12-12 01:43:31,186 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 01:43:31,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:43:31,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-12 01:43:31,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:43:31,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:43:31,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:43:31,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:43:31,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137124250] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:43:31,621 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:43:31,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 31 [2022-12-12 01:43:31,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798394916] [2022-12-12 01:43:31,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:43:31,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-12 01:43:31,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:43:31,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-12 01:43:31,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2022-12-12 01:43:31,623 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:43:31,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2472 places, 14009 transitions, 1565367 flow. Second operand has 31 states, 31 states have (on average 43.806451612903224) internal successors, (1358), 31 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) [2022-12-12 01:43:31,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:43:31,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:43:31,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:45:55,133 INFO L130 PetriNetUnfolder]: 8749/19601 cut-off events. [2022-12-12 01:45:55,133 INFO L131 PetriNetUnfolder]: For 2122393/2133896 co-relation queries the response was YES. [2022-12-12 01:45:55,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990043 conditions, 19601 events. 8749/19601 cut-off events. For 2122393/2133896 co-relation queries the response was YES. Maximal size of possible extension queue 1028. Compared 198098 event pairs, 29 based on Foata normal form. 78/18070 useless extension candidates. Maximal degree in co-relation 912856. Up to 10585 conditions per place. [2022-12-12 01:45:55,659 INFO L137 encePairwiseOnDemand]: 59/80 looper letters, 8989 selfloop transitions, 7209 changer transitions 69/16300 dead transitions. [2022-12-12 01:45:55,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2538 places, 16300 transitions, 1844209 flow [2022-12-12 01:45:55,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-12-12 01:45:55,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2022-12-12 01:45:55,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 3085 transitions. [2022-12-12 01:45:55,661 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5755597014925373 [2022-12-12 01:45:55,661 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 2467 predicate places. [2022-12-12 01:45:55,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 2538 places, 16300 transitions, 1844209 flow [2022-12-12 01:45:56,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2533 places, 16231 transitions, 1836243 flow [2022-12-12 01:45:56,930 INFO L495 AbstractCegarLoop]: Abstraction has has 2533 places, 16231 transitions, 1836243 flow [2022-12-12 01:45:56,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 43.806451612903224) internal successors, (1358), 31 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) [2022-12-12 01:45:56,930 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:45:56,931 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:45:56,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-12-12 01:45:57,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-12-12 01:45:57,135 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:45:57,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:45:57,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1516176911, now seen corresponding path program 29 times [2022-12-12 01:45:57,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:45:57,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814848969] [2022-12-12 01:45:57,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:45:57,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:45:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:45:57,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:45:57,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:45:57,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814848969] [2022-12-12 01:45:57,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814848969] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:45:57,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589042904] [2022-12-12 01:45:57,276 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 01:45:57,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:45:57,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:45:57,278 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:45:57,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-12-12 01:45:57,342 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 01:45:57,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:45:57,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 01:45:57,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:45:57,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:45:57,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:45:57,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:45:57,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589042904] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:45:57,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:45:57,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-12-12 01:45:57,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129534094] [2022-12-12 01:45:57,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:45:57,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-12 01:45:57,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:45:57,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-12 01:45:57,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1035, Unknown=0, NotChecked=0, Total=1190 [2022-12-12 01:45:57,941 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:45:57,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2533 places, 16231 transitions, 1836243 flow. Second operand has 35 states, 35 states have (on average 43.8) internal successors, (1533), 35 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:45:57,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:45:57,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:45:57,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 01:48:57,440 INFO L130 PetriNetUnfolder]: 9286/21042 cut-off events. [2022-12-12 01:48:57,440 INFO L131 PetriNetUnfolder]: For 2372974/2387239 co-relation queries the response was YES. [2022-12-12 01:48:57,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078881 conditions, 21042 events. 9286/21042 cut-off events. For 2372974/2387239 co-relation queries the response was YES. Maximal size of possible extension queue 1105. Compared 216497 event pairs, 33 based on Foata normal form. 165/19496 useless extension candidates. Maximal degree in co-relation 996316. Up to 10795 conditions per place. [2022-12-12 01:48:57,947 INFO L137 encePairwiseOnDemand]: 59/80 looper letters, 7094 selfloop transitions, 10354 changer transitions 66/17547 dead transitions. [2022-12-12 01:48:57,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2601 places, 17547 transitions, 2019381 flow [2022-12-12 01:48:57,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-12-12 01:48:57,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2022-12-12 01:48:57,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 3207 transitions. [2022-12-12 01:48:57,949 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5809782608695652 [2022-12-12 01:48:57,950 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 2530 predicate places. [2022-12-12 01:48:57,950 INFO L82 GeneralOperation]: Start removeDead. Operand has 2601 places, 17547 transitions, 2019381 flow [2022-12-12 01:48:59,218 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2597 places, 17481 transitions, 2011422 flow [2022-12-12 01:48:59,219 INFO L495 AbstractCegarLoop]: Abstraction has has 2597 places, 17481 transitions, 2011422 flow [2022-12-12 01:48:59,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 43.8) internal successors, (1533), 35 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:48:59,219 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 01:48:59,219 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 01:48:59,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-12-12 01:48:59,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:48:59,420 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 01:48:59,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 01:48:59,420 INFO L85 PathProgramCache]: Analyzing trace with hash -727609027, now seen corresponding path program 30 times [2022-12-12 01:48:59,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 01:48:59,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704545105] [2022-12-12 01:48:59,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 01:48:59,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 01:48:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 01:48:59,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:48:59,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 01:48:59,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704545105] [2022-12-12 01:48:59,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704545105] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 01:48:59,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023565539] [2022-12-12 01:48:59,550 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 01:48:59,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:48:59,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 01:48:59,552 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 01:48:59,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-12-12 01:48:59,617 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-12 01:48:59,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 01:48:59,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-12 01:48:59,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 01:48:59,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:48:59,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 01:49:00,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 01:49:00,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023565539] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 01:49:00,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 01:49:00,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 31 [2022-12-12 01:49:00,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928294422] [2022-12-12 01:49:00,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 01:49:00,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-12 01:49:00,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 01:49:00,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-12 01:49:00,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2022-12-12 01:49:00,078 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-12-12 01:49:00,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2597 places, 17481 transitions, 2011422 flow. Second operand has 31 states, 31 states have (on average 43.903225806451616) internal successors, (1361), 31 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 01:49:00,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 01:49:00,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-12-12 01:49:00,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-12 01:49:50,262 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 [2022-12-12 01:49:50,262 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 01:49:50,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-12-12 01:49:50,287 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 01:49:50,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-12-12 01:49:50,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:49:50,488 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (31states, 42/80 universal loopers) in iteration 62,while PetriNetUnfolder was constructing finite prefix that currently has 231595 conditions, 4337 events (1733/4336 cut-off events. For 444279/445560 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 45185 event pairs, 2 based on Foata normal form. 17/4775 useless extension candidates. Maximal degree in co-relation 231064. Up to 2374 conditions per place.). [2022-12-12 01:49:50,489 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 01:49:50,490 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 01:49:50,490 INFO L445 BasicCegarLoop]: Path program histogram: [30, 20, 6, 6] [2022-12-12 01:49:50,492 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 01:49:50,492 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 01:49:50,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 01:49:50 BasicIcfg [2022-12-12 01:49:50,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 01:49:50,495 INFO L158 Benchmark]: Toolchain (without parser) took 821004.00ms. Allocated memory was 191.9MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 168.8MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2022-12-12 01:49:50,495 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 191.9MB. Free memory is still 168.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 01:49:50,496 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.71ms. Allocated memory is still 191.9MB. Free memory was 168.8MB in the beginning and 157.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-12 01:49:50,496 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.62ms. Allocated memory is still 191.9MB. Free memory was 157.2MB in the beginning and 155.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 01:49:50,496 INFO L158 Benchmark]: Boogie Preprocessor took 28.22ms. Allocated memory is still 191.9MB. Free memory was 155.7MB in the beginning and 154.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 01:49:50,496 INFO L158 Benchmark]: RCFGBuilder took 346.07ms. Allocated memory is still 191.9MB. Free memory was 154.6MB in the beginning and 142.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 01:49:50,496 INFO L158 Benchmark]: TraceAbstraction took 820399.04ms. Allocated memory was 191.9MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 141.0MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2022-12-12 01:49:50,497 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 191.9MB. Free memory is still 168.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 197.71ms. Allocated memory is still 191.9MB. Free memory was 168.8MB in the beginning and 157.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.62ms. Allocated memory is still 191.9MB. Free memory was 157.2MB in the beginning and 155.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.22ms. Allocated memory is still 191.9MB. Free memory was 155.7MB in the beginning and 154.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 346.07ms. Allocated memory is still 191.9MB. Free memory was 154.6MB in the beginning and 142.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 820399.04ms. Allocated memory was 191.9MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 141.0MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (31states, 42/80 universal loopers) in iteration 62,while PetriNetUnfolder was constructing finite prefix that currently has 231595 conditions, 4337 events (1733/4336 cut-off events. For 444279/445560 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 45185 event pairs, 2 based on Foata normal form. 17/4775 useless extension candidates. Maximal degree in co-relation 231064. Up to 2374 conditions per place.). - TimeoutResultAtElement [Line: 74]: 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 (31states, 42/80 universal loopers) in iteration 62,while PetriNetUnfolder was constructing finite prefix that currently has 231595 conditions, 4337 events (1733/4336 cut-off events. For 444279/445560 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 45185 event pairs, 2 based on Foata normal form. 17/4775 useless extension candidates. Maximal degree in co-relation 231064. Up to 2374 conditions per place.). - TimeoutResultAtElement [Line: 73]: 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 (31states, 42/80 universal loopers) in iteration 62,while PetriNetUnfolder was constructing finite prefix that currently has 231595 conditions, 4337 events (1733/4336 cut-off events. For 444279/445560 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 45185 event pairs, 2 based on Foata normal form. 17/4775 useless extension candidates. Maximal degree in co-relation 231064. Up to 2374 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 97 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 9.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 820.3s, OverallIterations: 62, TraceHistogramMax: 1, PathProgramHistogramMax: 30, EmptinessCheckTime: 0.0s, AutomataDifference: 775.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13614 SdHoareTripleChecker+Valid, 17.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13614 mSDsluCounter, 19172 SdHoareTripleChecker+Invalid, 14.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17233 mSDsCounter, 1946 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42390 IncrementalHoareTripleChecker+Invalid, 44336 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1946 mSolverCounterUnsat, 1939 mSDtfsCounter, 42390 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7093 GetRequests, 3292 SyntacticMatches, 111 SemanticMatches, 3690 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172222 ImplicationChecksByTransitivity, 81.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2011422occurred in iteration=61, InterpolantAutomatonStates: 2968, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.0s AutomataMinimizationTime, 61 MinimizatonAttempts, 133195 StatesRemovedByMinimization, 61 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 25.7s InterpolantComputationTime, 5800 NumberOfCodeBlocks, 5800 NumberOfCodeBlocksAsserted, 125 NumberOfCheckSat, 7462 ConstructedInterpolants, 0 QuantifiedInterpolants, 44549 SizeOfPredicates, 296 NumberOfNonLiveVariables, 4788 ConjunctsInSsa, 614 ConjunctsInUnsatCore, 122 InterpolantComputations, 36 PerfectInterpolantSequences, 23/188 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