/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/unroll-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 05:46:18,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 05:46:18,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 05:46:18,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 05:46:18,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 05:46:18,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 05:46:18,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 05:46:18,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 05:46:18,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 05:46:18,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 05:46:18,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 05:46:18,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 05:46:18,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 05:46:18,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 05:46:18,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 05:46:18,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 05:46:18,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 05:46:18,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 05:46:18,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 05:46:18,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 05:46:18,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 05:46:18,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 05:46:18,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 05:46:18,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 05:46:18,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 05:46:18,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 05:46:18,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 05:46:18,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 05:46:18,552 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 05:46:18,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 05:46:18,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 05:46:18,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 05:46:18,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 05:46:18,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 05:46:18,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 05:46:18,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 05:46:18,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 05:46:18,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 05:46:18,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 05:46:18,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 05:46:18,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 05:46:18,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 05:46:18,577 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 05:46:18,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 05:46:18,579 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 05:46:18,579 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 05:46:18,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 05:46:18,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 05:46:18,580 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 05:46:18,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 05:46:18,580 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 05:46:18,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 05:46:18,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 05:46:18,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 05:46:18,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 05:46:18,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 05:46:18,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 05:46:18,581 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 05:46:18,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 05:46:18,581 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 05:46:18,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 05:46:18,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 05:46:18,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 05:46:18,582 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 05:46:18,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 05:46:18,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:46:18,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 05:46:18,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 05:46:18,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 05:46:18,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 05:46:18,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 05:46:18,582 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 05:46:18,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 05:46:18,582 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 05:46:18,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 05:46:18,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 05:46:18,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 05:46:18,800 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 05:46:18,800 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 05:46:18,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-5.wvr.c [2023-01-28 05:46:19,665 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 05:46:19,865 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 05:46:19,865 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-5.wvr.c [2023-01-28 05:46:19,870 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed304db69/20ab3b2b7ed241be9521f0d5484570a1/FLAG835235cc4 [2023-01-28 05:46:19,882 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed304db69/20ab3b2b7ed241be9521f0d5484570a1 [2023-01-28 05:46:19,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 05:46:19,884 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 05:46:19,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 05:46:19,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 05:46:19,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 05:46:19,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:46:19" (1/1) ... [2023-01-28 05:46:19,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d2b809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:46:19, skipping insertion in model container [2023-01-28 05:46:19,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:46:19" (1/1) ... [2023-01-28 05:46:19,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 05:46:19,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 05:46:20,022 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-5.wvr.c[2644,2657] [2023-01-28 05:46:20,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:46:20,033 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 05:46:20,046 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-5.wvr.c[2644,2657] [2023-01-28 05:46:20,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:46:20,057 INFO L208 MainTranslator]: Completed translation [2023-01-28 05:46:20,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:46:20 WrapperNode [2023-01-28 05:46:20,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 05:46:20,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 05:46:20,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 05:46:20,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 05:46:20,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:46:20" (1/1) ... [2023-01-28 05:46:20,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:46:20" (1/1) ... [2023-01-28 05:46:20,084 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 167 [2023-01-28 05:46:20,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 05:46:20,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 05:46:20,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 05:46:20,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 05:46:20,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:46:20" (1/1) ... [2023-01-28 05:46:20,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:46:20" (1/1) ... [2023-01-28 05:46:20,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:46:20" (1/1) ... [2023-01-28 05:46:20,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:46:20" (1/1) ... [2023-01-28 05:46:20,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:46:20" (1/1) ... [2023-01-28 05:46:20,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:46:20" (1/1) ... [2023-01-28 05:46:20,100 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:46:20" (1/1) ... [2023-01-28 05:46:20,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:46:20" (1/1) ... [2023-01-28 05:46:20,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 05:46:20,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 05:46:20,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 05:46:20,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 05:46:20,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:46:20" (1/1) ... [2023-01-28 05:46:20,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:46:20,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:46:20,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 05:46:20,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 05:46:20,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 05:46:20,187 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 05:46:20,187 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 05:46:20,187 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 05:46:20,187 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 05:46:20,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 05:46:20,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 05:46:20,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 05:46:20,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 05:46:20,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 05:46:20,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 05:46:20,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 05:46:20,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 05:46:20,189 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 05:46:20,279 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 05:46:20,280 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 05:46:20,487 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 05:46:20,494 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 05:46:20,494 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-28 05:46:20,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:46:20 BoogieIcfgContainer [2023-01-28 05:46:20,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 05:46:20,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 05:46:20,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 05:46:20,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 05:46:20,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 05:46:19" (1/3) ... [2023-01-28 05:46:20,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155112a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:46:20, skipping insertion in model container [2023-01-28 05:46:20,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:46:20" (2/3) ... [2023-01-28 05:46:20,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155112a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:46:20, skipping insertion in model container [2023-01-28 05:46:20,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:46:20" (3/3) ... [2023-01-28 05:46:20,500 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-5.wvr.c [2023-01-28 05:46:20,511 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 05:46:20,511 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 05:46:20,511 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 05:46:20,586 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 05:46:20,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 196 transitions, 408 flow [2023-01-28 05:46:20,681 INFO L130 PetriNetUnfolder]: 17/194 cut-off events. [2023-01-28 05:46:20,681 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 05:46:20,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 194 events. 17/194 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 165 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-01-28 05:46:20,687 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 196 transitions, 408 flow [2023-01-28 05:46:20,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 186 transitions, 384 flow [2023-01-28 05:46:20,693 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 05:46:20,698 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 186 transitions, 384 flow [2023-01-28 05:46:20,700 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 186 transitions, 384 flow [2023-01-28 05:46:20,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 186 transitions, 384 flow [2023-01-28 05:46:20,736 INFO L130 PetriNetUnfolder]: 17/186 cut-off events. [2023-01-28 05:46:20,736 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 05:46:20,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 186 events. 17/186 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 147 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-01-28 05:46:20,747 INFO L119 LiptonReduction]: Number of co-enabled transitions 3892 [2023-01-28 05:46:25,196 INFO L134 LiptonReduction]: Checked pairs total: 3908 [2023-01-28 05:46:25,197 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-01-28 05:46:25,208 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 05:46:25,220 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;@ac7f735, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 05:46:25,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 05:46:25,223 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-01-28 05:46:25,223 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 05:46:25,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:46:25,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:46:25,224 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:46:25,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:46:25,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1925462898, now seen corresponding path program 1 times [2023-01-28 05:46:25,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:46:25,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902002236] [2023-01-28 05:46:25,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:46:25,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:46:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:46:25,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:46:25,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:46:25,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902002236] [2023-01-28 05:46:25,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902002236] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:46:25,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:46:25,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 05:46:25,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043806121] [2023-01-28 05:46:25,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:46:25,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:46:25,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:46:25,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:46:25,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:46:25,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 426 [2023-01-28 05:46:25,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:25,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:46:25,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 426 [2023-01-28 05:46:25,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:46:25,554 INFO L130 PetriNetUnfolder]: 49/84 cut-off events. [2023-01-28 05:46:25,554 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-28 05:46:25,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 84 events. 49/84 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 186 event pairs, 19 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 129. Up to 81 conditions per place. [2023-01-28 05:46:25,555 INFO L137 encePairwiseOnDemand]: 423/426 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-01-28 05:46:25,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 80 flow [2023-01-28 05:46:25,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:46:25,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:46:25,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2023-01-28 05:46:25,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4029733959311424 [2023-01-28 05:46:25,566 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2023-01-28 05:46:25,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2023-01-28 05:46:25,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:46:25,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2023-01-28 05:46:25,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:25,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:25,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:25,576 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 515 transitions. [2023-01-28 05:46:25,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 80 flow [2023-01-28 05:46:25,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 05:46:25,579 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2023-01-28 05:46:25,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2023-01-28 05:46:25,582 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2023-01-28 05:46:25,582 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2023-01-28 05:46:25,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:25,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:46:25,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:46:25,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 05:46:25,583 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:46:25,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:46:25,584 INFO L85 PathProgramCache]: Analyzing trace with hash 406205141, now seen corresponding path program 1 times [2023-01-28 05:46:25,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:46:25,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136807711] [2023-01-28 05:46:25,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:46:25,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:46:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:46:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:46:25,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:46:25,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136807711] [2023-01-28 05:46:25,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136807711] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:46:25,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:46:25,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 05:46:25,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516983380] [2023-01-28 05:46:25,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:46:25,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:46:25,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:46:25,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:46:25,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:46:25,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 426 [2023-01-28 05:46:25,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:25,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:46:25,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 426 [2023-01-28 05:46:25,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:46:25,730 INFO L130 PetriNetUnfolder]: 66/117 cut-off events. [2023-01-28 05:46:25,730 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 05:46:25,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 117 events. 66/117 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 310 event pairs, 9 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 234. Up to 85 conditions per place. [2023-01-28 05:46:25,731 INFO L137 encePairwiseOnDemand]: 422/426 looper letters, 22 selfloop transitions, 3 changer transitions 1/28 dead transitions. [2023-01-28 05:46:25,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 28 transitions, 125 flow [2023-01-28 05:46:25,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:46:25,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:46:25,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-01-28 05:46:25,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3865414710485133 [2023-01-28 05:46:25,733 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-01-28 05:46:25,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-01-28 05:46:25,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:46:25,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-01-28 05:46:25,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:25,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:25,736 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:25,736 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 3 states and 494 transitions. [2023-01-28 05:46:25,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 28 transitions, 125 flow [2023-01-28 05:46:25,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 28 transitions, 121 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 05:46:25,737 INFO L231 Difference]: Finished difference. Result has 22 places, 20 transitions, 65 flow [2023-01-28 05:46:25,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=22, PETRI_TRANSITIONS=20} [2023-01-28 05:46:25,738 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2023-01-28 05:46:25,738 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 20 transitions, 65 flow [2023-01-28 05:46:25,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:25,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:46:25,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:46:25,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 05:46:25,739 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:46:25,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:46:25,739 INFO L85 PathProgramCache]: Analyzing trace with hash -91515540, now seen corresponding path program 1 times [2023-01-28 05:46:25,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:46:25,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209299541] [2023-01-28 05:46:25,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:46:25,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:46:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:46:25,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:46:25,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:46:25,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209299541] [2023-01-28 05:46:25,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209299541] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:46:25,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:46:25,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:46:25,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174879275] [2023-01-28 05:46:25,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:46:25,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:46:25,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:46:25,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:46:25,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:46:25,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 426 [2023-01-28 05:46:25,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:25,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:46:25,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 426 [2023-01-28 05:46:25,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:46:25,930 INFO L130 PetriNetUnfolder]: 85/170 cut-off events. [2023-01-28 05:46:25,931 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-01-28 05:46:25,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 170 events. 85/170 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 576 event pairs, 26 based on Foata normal form. 12/181 useless extension candidates. Maximal degree in co-relation 386. Up to 87 conditions per place. [2023-01-28 05:46:25,932 INFO L137 encePairwiseOnDemand]: 421/426 looper letters, 31 selfloop transitions, 4 changer transitions 8/43 dead transitions. [2023-01-28 05:46:25,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 43 transitions, 212 flow [2023-01-28 05:46:25,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:46:25,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:46:25,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 821 transitions. [2023-01-28 05:46:25,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854460093896714 [2023-01-28 05:46:25,934 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 821 transitions. [2023-01-28 05:46:25,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 821 transitions. [2023-01-28 05:46:25,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:46:25,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 821 transitions. [2023-01-28 05:46:25,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.2) internal successors, (821), 5 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:25,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:25,939 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:25,939 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 65 flow. Second operand 5 states and 821 transitions. [2023-01-28 05:46:25,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 43 transitions, 212 flow [2023-01-28 05:46:25,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 43 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:46:25,940 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 93 flow [2023-01-28 05:46:25,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=93, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-01-28 05:46:25,941 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 7 predicate places. [2023-01-28 05:46:25,941 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 93 flow [2023-01-28 05:46:25,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:25,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:46:25,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:46:25,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 05:46:25,942 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:46:25,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:46:25,942 INFO L85 PathProgramCache]: Analyzing trace with hash 531655878, now seen corresponding path program 2 times [2023-01-28 05:46:25,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:46:25,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189292407] [2023-01-28 05:46:25,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:46:25,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:46:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:46:26,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:46:26,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:46:26,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189292407] [2023-01-28 05:46:26,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189292407] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:46:26,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:46:26,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 05:46:26,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374502112] [2023-01-28 05:46:26,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:46:26,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:46:26,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:46:26,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:46:26,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:46:26,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 426 [2023-01-28 05:46:26,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 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) [2023-01-28 05:46:26,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:46:26,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 426 [2023-01-28 05:46:26,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:46:26,083 INFO L130 PetriNetUnfolder]: 85/163 cut-off events. [2023-01-28 05:46:26,083 INFO L131 PetriNetUnfolder]: For 123/135 co-relation queries the response was YES. [2023-01-28 05:46:26,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 163 events. 85/163 cut-off events. For 123/135 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 524 event pairs, 24 based on Foata normal form. 7/164 useless extension candidates. Maximal degree in co-relation 474. Up to 104 conditions per place. [2023-01-28 05:46:26,084 INFO L137 encePairwiseOnDemand]: 422/426 looper letters, 26 selfloop transitions, 4 changer transitions 4/35 dead transitions. [2023-01-28 05:46:26,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 35 transitions, 206 flow [2023-01-28 05:46:26,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:46:26,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:46:26,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 700 transitions. [2023-01-28 05:46:26,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107981220657277 [2023-01-28 05:46:26,086 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 700 transitions. [2023-01-28 05:46:26,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 700 transitions. [2023-01-28 05:46:26,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:46:26,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 700 transitions. [2023-01-28 05:46:26,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:26,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:26,111 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:26,111 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 93 flow. Second operand 4 states and 700 transitions. [2023-01-28 05:46:26,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 35 transitions, 206 flow [2023-01-28 05:46:26,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 193 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 05:46:26,113 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 112 flow [2023-01-28 05:46:26,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-01-28 05:46:26,113 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 9 predicate places. [2023-01-28 05:46:26,113 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 112 flow [2023-01-28 05:46:26,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 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) [2023-01-28 05:46:26,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:46:26,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:46:26,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 05:46:26,114 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:46:26,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:46:26,115 INFO L85 PathProgramCache]: Analyzing trace with hash 51165837, now seen corresponding path program 1 times [2023-01-28 05:46:26,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:46:26,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023888268] [2023-01-28 05:46:26,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:46:26,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:46:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:46:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:46:26,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:46:26,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023888268] [2023-01-28 05:46:26,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023888268] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:46:26,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:46:26,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 05:46:26,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250000323] [2023-01-28 05:46:26,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:46:26,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:46:26,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:46:26,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:46:26,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:46:26,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 426 [2023-01-28 05:46:26,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:26,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:46:26,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 426 [2023-01-28 05:46:26,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:46:26,252 INFO L130 PetriNetUnfolder]: 82/167 cut-off events. [2023-01-28 05:46:26,253 INFO L131 PetriNetUnfolder]: For 226/246 co-relation queries the response was YES. [2023-01-28 05:46:26,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 167 events. 82/167 cut-off events. For 226/246 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 565 event pairs, 31 based on Foata normal form. 18/180 useless extension candidates. Maximal degree in co-relation 491. Up to 114 conditions per place. [2023-01-28 05:46:26,254 INFO L137 encePairwiseOnDemand]: 422/426 looper letters, 32 selfloop transitions, 4 changer transitions 2/40 dead transitions. [2023-01-28 05:46:26,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 254 flow [2023-01-28 05:46:26,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:46:26,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:46:26,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 666 transitions. [2023-01-28 05:46:26,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3908450704225352 [2023-01-28 05:46:26,255 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 666 transitions. [2023-01-28 05:46:26,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 666 transitions. [2023-01-28 05:46:26,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:46:26,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 666 transitions. [2023-01-28 05:46:26,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:26,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:26,260 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:26,260 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 112 flow. Second operand 4 states and 666 transitions. [2023-01-28 05:46:26,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 254 flow [2023-01-28 05:46:26,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 251 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:46:26,261 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 139 flow [2023-01-28 05:46:26,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-01-28 05:46:26,262 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 13 predicate places. [2023-01-28 05:46:26,262 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 139 flow [2023-01-28 05:46:26,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:26,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:46:26,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:46:26,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 05:46:26,263 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:46:26,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:46:26,263 INFO L85 PathProgramCache]: Analyzing trace with hash 151453329, now seen corresponding path program 2 times [2023-01-28 05:46:26,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:46:26,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343701162] [2023-01-28 05:46:26,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:46:26,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:46:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:46:26,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:46:26,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:46:26,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343701162] [2023-01-28 05:46:26,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343701162] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:46:26,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478606515] [2023-01-28 05:46:26,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:46:26,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:46:26,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:46:26,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:46:26,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 05:46:26,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:46:26,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:46:26,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 05:46:26,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:46:26,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:46:26,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 05:46:26,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478606515] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:46:26,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 05:46:26,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-01-28 05:46:26,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411266246] [2023-01-28 05:46:26,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:46:26,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:46:26,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:46:26,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:46:26,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:46:26,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 426 [2023-01-28 05:46:26,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:26,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:46:26,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 426 [2023-01-28 05:46:26,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:46:26,645 INFO L130 PetriNetUnfolder]: 90/181 cut-off events. [2023-01-28 05:46:26,646 INFO L131 PetriNetUnfolder]: For 303/321 co-relation queries the response was YES. [2023-01-28 05:46:26,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 181 events. 90/181 cut-off events. For 303/321 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 602 event pairs, 27 based on Foata normal form. 20/196 useless extension candidates. Maximal degree in co-relation 643. Up to 126 conditions per place. [2023-01-28 05:46:26,647 INFO L137 encePairwiseOnDemand]: 422/426 looper letters, 30 selfloop transitions, 4 changer transitions 5/41 dead transitions. [2023-01-28 05:46:26,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 281 flow [2023-01-28 05:46:26,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:46:26,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:46:26,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 670 transitions. [2023-01-28 05:46:26,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3931924882629108 [2023-01-28 05:46:26,649 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 670 transitions. [2023-01-28 05:46:26,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 670 transitions. [2023-01-28 05:46:26,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:46:26,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 670 transitions. [2023-01-28 05:46:26,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 167.5) internal successors, (670), 4 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:26,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:26,653 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:26,653 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 139 flow. Second operand 4 states and 670 transitions. [2023-01-28 05:46:26,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 281 flow [2023-01-28 05:46:26,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 270 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-28 05:46:26,655 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 164 flow [2023-01-28 05:46:26,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2023-01-28 05:46:26,655 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 17 predicate places. [2023-01-28 05:46:26,655 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 164 flow [2023-01-28 05:46:26,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:26,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:46:26,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:46:26,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 05:46:26,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-01-28 05:46:26,861 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:46:26,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:46:26,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1653193011, now seen corresponding path program 3 times [2023-01-28 05:46:26,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:46:26,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726597988] [2023-01-28 05:46:26,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:46:26,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:46:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:46:26,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:46:26,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:46:26,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726597988] [2023-01-28 05:46:26,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726597988] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:46:26,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770962626] [2023-01-28 05:46:26,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 05:46:26,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:46:26,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:46:26,941 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:46:26,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 05:46:27,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 05:46:27,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:46:27,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 05:46:27,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:46:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:46:27,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 05:46:27,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770962626] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:46:27,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 05:46:27,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-01-28 05:46:27,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035900987] [2023-01-28 05:46:27,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:46:27,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:46:27,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:46:27,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:46:27,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 05:46:27,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 426 [2023-01-28 05:46:27,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:27,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:46:27,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 426 [2023-01-28 05:46:27,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:46:27,201 INFO L130 PetriNetUnfolder]: 92/180 cut-off events. [2023-01-28 05:46:27,201 INFO L131 PetriNetUnfolder]: For 506/524 co-relation queries the response was YES. [2023-01-28 05:46:27,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 180 events. 92/180 cut-off events. For 506/524 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 604 event pairs, 35 based on Foata normal form. 20/194 useless extension candidates. Maximal degree in co-relation 672. Up to 126 conditions per place. [2023-01-28 05:46:27,202 INFO L137 encePairwiseOnDemand]: 422/426 looper letters, 29 selfloop transitions, 8 changer transitions 3/42 dead transitions. [2023-01-28 05:46:27,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 314 flow [2023-01-28 05:46:27,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:46:27,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:46:27,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 667 transitions. [2023-01-28 05:46:27,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3914319248826291 [2023-01-28 05:46:27,204 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 667 transitions. [2023-01-28 05:46:27,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 667 transitions. [2023-01-28 05:46:27,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:46:27,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 667 transitions. [2023-01-28 05:46:27,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:27,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:27,207 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:27,207 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 164 flow. Second operand 4 states and 667 transitions. [2023-01-28 05:46:27,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 314 flow [2023-01-28 05:46:27,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 301 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-28 05:46:27,212 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 200 flow [2023-01-28 05:46:27,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-01-28 05:46:27,212 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 20 predicate places. [2023-01-28 05:46:27,213 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 200 flow [2023-01-28 05:46:27,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:27,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:46:27,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:46:27,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 05:46:27,418 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,SelfDestructingSolverStorable6 [2023-01-28 05:46:27,418 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:46:27,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:46:27,419 INFO L85 PathProgramCache]: Analyzing trace with hash 414711862, now seen corresponding path program 3 times [2023-01-28 05:46:27,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:46:27,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689958723] [2023-01-28 05:46:27,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:46:27,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:46:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:46:27,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:46:27,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:46:27,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689958723] [2023-01-28 05:46:27,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689958723] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:46:27,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:46:27,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:46:27,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041109874] [2023-01-28 05:46:27,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:46:27,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:46:27,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:46:27,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:46:27,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:46:27,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 426 [2023-01-28 05:46:27,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:27,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:46:27,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 426 [2023-01-28 05:46:27,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:46:27,591 INFO L130 PetriNetUnfolder]: 108/207 cut-off events. [2023-01-28 05:46:27,591 INFO L131 PetriNetUnfolder]: For 562/562 co-relation queries the response was YES. [2023-01-28 05:46:27,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 207 events. 108/207 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 670 event pairs, 38 based on Foata normal form. 4/210 useless extension candidates. Maximal degree in co-relation 824. Up to 147 conditions per place. [2023-01-28 05:46:27,593 INFO L137 encePairwiseOnDemand]: 421/426 looper letters, 33 selfloop transitions, 10 changer transitions 4/47 dead transitions. [2023-01-28 05:46:27,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 388 flow [2023-01-28 05:46:27,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:46:27,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:46:27,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 815 transitions. [2023-01-28 05:46:27,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3826291079812207 [2023-01-28 05:46:27,595 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 815 transitions. [2023-01-28 05:46:27,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 815 transitions. [2023-01-28 05:46:27,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:46:27,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 815 transitions. [2023-01-28 05:46:27,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:27,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:27,600 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:27,600 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 200 flow. Second operand 5 states and 815 transitions. [2023-01-28 05:46:27,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 388 flow [2023-01-28 05:46:27,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 364 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-28 05:46:27,603 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 255 flow [2023-01-28 05:46:27,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-01-28 05:46:27,605 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 23 predicate places. [2023-01-28 05:46:27,605 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 255 flow [2023-01-28 05:46:27,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:27,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:46:27,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:46:27,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 05:46:27,607 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:46:27,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:46:27,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1611530206, now seen corresponding path program 4 times [2023-01-28 05:46:27,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:46:27,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487706017] [2023-01-28 05:46:27,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:46:27,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:46:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:46:27,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:46:27,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:46:27,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487706017] [2023-01-28 05:46:27,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487706017] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:46:27,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:46:27,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:46:27,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681866069] [2023-01-28 05:46:27,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:46:27,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:46:27,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:46:27,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:46:27,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:46:27,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 426 [2023-01-28 05:46:27,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:27,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:46:27,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 426 [2023-01-28 05:46:27,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:46:27,832 INFO L130 PetriNetUnfolder]: 108/201 cut-off events. [2023-01-28 05:46:27,833 INFO L131 PetriNetUnfolder]: For 630/630 co-relation queries the response was YES. [2023-01-28 05:46:27,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 886 conditions, 201 events. 108/201 cut-off events. For 630/630 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 643 event pairs, 31 based on Foata normal form. 4/204 useless extension candidates. Maximal degree in co-relation 858. Up to 138 conditions per place. [2023-01-28 05:46:27,834 INFO L137 encePairwiseOnDemand]: 421/426 looper letters, 31 selfloop transitions, 14 changer transitions 6/51 dead transitions. [2023-01-28 05:46:27,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 446 flow [2023-01-28 05:46:27,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:46:27,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:46:27,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 818 transitions. [2023-01-28 05:46:27,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38403755868544603 [2023-01-28 05:46:27,836 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 818 transitions. [2023-01-28 05:46:27,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 818 transitions. [2023-01-28 05:46:27,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:46:27,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 818 transitions. [2023-01-28 05:46:27,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.6) internal successors, (818), 5 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:27,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:27,840 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:27,840 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 255 flow. Second operand 5 states and 818 transitions. [2023-01-28 05:46:27,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 446 flow [2023-01-28 05:46:27,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 435 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 05:46:27,842 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 322 flow [2023-01-28 05:46:27,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=322, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-01-28 05:46:27,844 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 28 predicate places. [2023-01-28 05:46:27,844 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 322 flow [2023-01-28 05:46:27,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:27,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:46:27,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:46:27,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 05:46:27,844 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:46:27,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:46:27,845 INFO L85 PathProgramCache]: Analyzing trace with hash -541961488, now seen corresponding path program 1 times [2023-01-28 05:46:27,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:46:27,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205545671] [2023-01-28 05:46:27,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:46:27,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:46:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:46:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:46:28,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:46:28,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205545671] [2023-01-28 05:46:28,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205545671] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:46:28,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961982607] [2023-01-28 05:46:28,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:46:28,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:46:28,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:46:28,167 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:46:28,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 05:46:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:46:28,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 41 conjunts are in the unsatisfiable core [2023-01-28 05:46:28,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:46:28,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 05:46:28,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 05:46:28,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 05:46:28,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 05:46:28,520 INFO L321 Elim1Store]: treesize reduction 29, result has 64.2 percent of original size [2023-01-28 05:46:28,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 84 [2023-01-28 05:46:28,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:46:28,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:46:28,793 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:46:28,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 371 treesize of output 215 [2023-01-28 05:46:28,876 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:46:28,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 700 treesize of output 708 [2023-01-28 05:46:28,993 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:46:28,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 370 treesize of output 342 [2023-01-28 05:46:29,126 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:46:29,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 151 treesize of output 245 [2023-01-28 05:46:36,306 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-01-28 05:46:36,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:46:36,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961982607] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:46:36,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:46:36,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 16 [2023-01-28 05:46:36,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749812] [2023-01-28 05:46:36,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:46:36,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 05:46:36,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:46:36,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 05:46:36,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=188, Unknown=8, NotChecked=0, Total=240 [2023-01-28 05:46:36,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 426 [2023-01-28 05:46:36,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 322 flow. Second operand has 16 states, 16 states have (on average 116.6875) internal successors, (1867), 16 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:36,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:46:36,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 426 [2023-01-28 05:46:36,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:46:37,697 INFO L130 PetriNetUnfolder]: 243/430 cut-off events. [2023-01-28 05:46:37,697 INFO L131 PetriNetUnfolder]: For 1418/1444 co-relation queries the response was YES. [2023-01-28 05:46:37,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1996 conditions, 430 events. 243/430 cut-off events. For 1418/1444 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1657 event pairs, 16 based on Foata normal form. 36/460 useless extension candidates. Maximal degree in co-relation 1656. Up to 209 conditions per place. [2023-01-28 05:46:37,700 INFO L137 encePairwiseOnDemand]: 418/426 looper letters, 35 selfloop transitions, 20 changer transitions 64/122 dead transitions. [2023-01-28 05:46:37,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 122 transitions, 1087 flow [2023-01-28 05:46:37,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 05:46:37,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 05:46:37,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2380 transitions. [2023-01-28 05:46:37,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2793427230046948 [2023-01-28 05:46:37,706 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2380 transitions. [2023-01-28 05:46:37,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2380 transitions. [2023-01-28 05:46:37,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:46:37,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2380 transitions. [2023-01-28 05:46:37,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 119.0) internal successors, (2380), 20 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:37,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 426.0) internal successors, (8946), 21 states have internal predecessors, (8946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:37,719 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 426.0) internal successors, (8946), 21 states have internal predecessors, (8946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:37,719 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 322 flow. Second operand 20 states and 2380 transitions. [2023-01-28 05:46:37,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 122 transitions, 1087 flow [2023-01-28 05:46:37,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 122 transitions, 999 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-01-28 05:46:37,723 INFO L231 Difference]: Finished difference. Result has 70 places, 40 transitions, 383 flow [2023-01-28 05:46:37,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=383, PETRI_PLACES=70, PETRI_TRANSITIONS=40} [2023-01-28 05:46:37,724 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 49 predicate places. [2023-01-28 05:46:37,724 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 40 transitions, 383 flow [2023-01-28 05:46:37,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 116.6875) internal successors, (1867), 16 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:37,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:46:37,725 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:46:37,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-28 05:46:37,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:46:37,929 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:46:37,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:46:37,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1708393027, now seen corresponding path program 2 times [2023-01-28 05:46:37,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:46:37,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178689698] [2023-01-28 05:46:37,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:46:37,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:46:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:46:39,091 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 05:46:39,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:46:39,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178689698] [2023-01-28 05:46:39,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178689698] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:46:39,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694270033] [2023-01-28 05:46:39,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:46:39,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:46:39,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:46:39,092 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:46:39,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 05:46:39,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:46:39,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:46:39,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 05:46:39,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:46:39,735 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 05:46:39,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:46:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 05:46:39,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694270033] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:46:39,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:46:39,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 15 [2023-01-28 05:46:39,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794128584] [2023-01-28 05:46:39,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:46:39,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 05:46:39,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:46:39,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 05:46:39,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-01-28 05:46:39,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 426 [2023-01-28 05:46:39,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 40 transitions, 383 flow. Second operand has 15 states, 15 states have (on average 158.33333333333334) internal successors, (2375), 15 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:39,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:46:39,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 426 [2023-01-28 05:46:39,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:46:44,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 05:46:50,669 INFO L130 PetriNetUnfolder]: 230/398 cut-off events. [2023-01-28 05:46:50,669 INFO L131 PetriNetUnfolder]: For 2010/2010 co-relation queries the response was YES. [2023-01-28 05:46:50,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2209 conditions, 398 events. 230/398 cut-off events. For 2010/2010 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1390 event pairs, 11 based on Foata normal form. 62/460 useless extension candidates. Maximal degree in co-relation 2182. Up to 213 conditions per place. [2023-01-28 05:46:50,672 INFO L137 encePairwiseOnDemand]: 420/426 looper letters, 89 selfloop transitions, 52 changer transitions 0/141 dead transitions. [2023-01-28 05:46:50,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 141 transitions, 1397 flow [2023-01-28 05:46:50,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 05:46:50,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 05:46:50,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3869 transitions. [2023-01-28 05:46:50,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37842331768388104 [2023-01-28 05:46:50,685 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3869 transitions. [2023-01-28 05:46:50,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3869 transitions. [2023-01-28 05:46:50,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:46:50,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3869 transitions. [2023-01-28 05:46:50,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 161.20833333333334) internal successors, (3869), 24 states have internal predecessors, (3869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:50,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 426.0) internal successors, (10650), 25 states have internal predecessors, (10650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:50,706 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 426.0) internal successors, (10650), 25 states have internal predecessors, (10650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:50,706 INFO L175 Difference]: Start difference. First operand has 70 places, 40 transitions, 383 flow. Second operand 24 states and 3869 transitions. [2023-01-28 05:46:50,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 141 transitions, 1397 flow [2023-01-28 05:46:50,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 141 transitions, 1266 flow, removed 47 selfloop flow, removed 11 redundant places. [2023-01-28 05:46:50,712 INFO L231 Difference]: Finished difference. Result has 78 places, 79 transitions, 889 flow [2023-01-28 05:46:50,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=889, PETRI_PLACES=78, PETRI_TRANSITIONS=79} [2023-01-28 05:46:50,713 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 57 predicate places. [2023-01-28 05:46:50,713 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 79 transitions, 889 flow [2023-01-28 05:46:50,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 158.33333333333334) internal successors, (2375), 15 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:46:50,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:46:50,714 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:46:50,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 05:46:50,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:46:50,919 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:46:50,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:46:50,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1666646071, now seen corresponding path program 3 times [2023-01-28 05:46:50,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:46:50,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836260992] [2023-01-28 05:46:50,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:46:50,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:46:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:46:53,598 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:46:53,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:46:53,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836260992] [2023-01-28 05:46:53,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836260992] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:46:53,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438316338] [2023-01-28 05:46:53,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 05:46:53,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:46:53,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:46:53,599 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:46:53,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 05:46:54,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-28 05:46:54,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:46:54,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 66 conjunts are in the unsatisfiable core [2023-01-28 05:46:54,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:46:54,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 05:46:54,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 05:46:54,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 05:46:54,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 05:46:54,512 INFO L321 Elim1Store]: treesize reduction 63, result has 22.2 percent of original size [2023-01-28 05:46:54,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 153 treesize of output 62 [2023-01-28 05:46:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:46:54,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:46:55,922 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:46:55,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 1536 treesize of output 681 [2023-01-28 05:46:56,783 INFO L321 Elim1Store]: treesize reduction 5, result has 98.8 percent of original size [2023-01-28 05:46:56,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 1678 treesize of output 1809 [2023-01-28 05:46:58,048 INFO L321 Elim1Store]: treesize reduction 8, result has 98.1 percent of original size [2023-01-28 05:46:58,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 1326 treesize of output 1278 [2023-01-28 05:46:59,786 INFO L321 Elim1Store]: treesize reduction 8, result has 98.1 percent of original size [2023-01-28 05:46:59,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 525 treesize of output 741 [2023-01-28 05:47:22,506 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 05:47:23,376 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 05:47:42,559 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 05:47:54,627 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 05:48:00,183 WARN L222 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 625 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-28 05:48:29,465 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 05:48:33,945 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 05:48:46,398 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 05:48:58,338 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 05:49:02,753 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 05:49:04,798 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 05:49:10,256 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 05:50:02,329 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 05:50:03,810 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 05:50:05,794 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 05:50:24,095 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 05:50:32,375 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 05:50:33,708 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 05:50:48,014 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 05:51:03,777 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 05:51:47,269 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 05:52:00,030 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 05:52:05,129 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 05:52:17,857 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 05:52:30,471 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 05:52:35,369 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 05:52:37,334 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 05:53:05,754 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 05:53:07,978 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. Received shutdown request... [2023-01-28 06:00:33,304 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 06:00:33,306 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 06:00:33,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 06:00:33,312 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 06:00:33,323 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 06:00:33,512 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,SelfDestructingSolverStorable11 [2023-01-28 06:00:33,512 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 29ms.. [2023-01-28 06:00:33,513 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 06:00:33,514 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 06:00:33,514 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 1, 1] [2023-01-28 06:00:33,526 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 06:00:33,526 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 06:00:33,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 06:00:33 BasicIcfg [2023-01-28 06:00:33,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 06:00:33,545 INFO L158 Benchmark]: Toolchain (without parser) took 853659.46ms. Allocated memory was 474.0MB in the beginning and 1.7GB in the end (delta: 1.2GB). Free memory was 434.7MB in the beginning and 697.9MB in the end (delta: -263.2MB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2023-01-28 06:00:33,545 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 335.5MB. Free memory is still 282.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 06:00:33,545 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.57ms. Allocated memory is still 474.0MB. Free memory was 434.7MB in the beginning and 423.0MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 06:00:33,545 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.16ms. Allocated memory is still 474.0MB. Free memory was 423.0MB in the beginning and 420.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:00:33,545 INFO L158 Benchmark]: Boogie Preprocessor took 17.52ms. Allocated memory is still 474.0MB. Free memory was 420.9MB in the beginning and 419.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 06:00:33,545 INFO L158 Benchmark]: RCFGBuilder took 392.63ms. Allocated memory is still 474.0MB. Free memory was 419.5MB in the beginning and 401.3MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 06:00:33,546 INFO L158 Benchmark]: TraceAbstraction took 853046.65ms. Allocated memory was 474.0MB in the beginning and 1.7GB in the end (delta: 1.2GB). Free memory was 400.7MB in the beginning and 697.9MB in the end (delta: -297.3MB). Peak memory consumption was 1.0GB. Max. memory is 16.0GB. [2023-01-28 06:00:33,548 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 335.5MB. Free memory is still 282.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 171.57ms. Allocated memory is still 474.0MB. Free memory was 434.7MB in the beginning and 423.0MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.16ms. Allocated memory is still 474.0MB. Free memory was 423.0MB in the beginning and 420.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 17.52ms. Allocated memory is still 474.0MB. Free memory was 420.9MB in the beginning and 419.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 392.63ms. Allocated memory is still 474.0MB. Free memory was 419.5MB in the beginning and 401.3MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 853046.65ms. Allocated memory was 474.0MB in the beginning and 1.7GB in the end (delta: 1.2GB). Free memory was 400.7MB in the beginning and 697.9MB in the end (delta: -297.3MB). Peak memory consumption was 1.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 176 PlacesBefore, 21 PlacesAfterwards, 186 TransitionsBefore, 17 TransitionsAfterwards, 3892 CoEnabledTransitionPairs, 8 FixpointIterations, 74 TrivialSequentialCompositions, 82 ConcurrentSequentialCompositions, 25 TrivialYvCompositions, 35 ConcurrentYvCompositions, 14 ChoiceCompositions, 230 TotalNumberOfCompositions, 3908 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3865, independent: 3854, independent conditional: 0, independent unconditional: 3854, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2368, independent: 2362, independent conditional: 0, independent unconditional: 2362, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3865, independent: 1492, independent conditional: 0, independent unconditional: 1492, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 2368, unknown conditional: 0, unknown unconditional: 2368] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 29ms.. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 29ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 29ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 264 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 852.9s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 12.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 408 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 408 mSDsluCounter, 56 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1201 IncrementalHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 23 mSDtfsCounter, 1201 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 183 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=889occurred in iteration=11, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 10.8s InterpolantComputationTime, 245 NumberOfCodeBlocks, 245 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 264 ConstructedInterpolants, 5 QuantifiedInterpolants, 3968 SizeOfPredicates, 26 NumberOfNonLiveVariables, 727 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 30/49 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