/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 17:44:42,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 17:44:42,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 17:44:42,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 17:44:42,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 17:44:42,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 17:44:42,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 17:44:42,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 17:44:42,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 17:44:42,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 17:44:42,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 17:44:42,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 17:44:42,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 17:44:42,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 17:44:42,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 17:44:42,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 17:44:42,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 17:44:42,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 17:44:42,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 17:44:42,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 17:44:42,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 17:44:42,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 17:44:42,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 17:44:42,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 17:44:42,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 17:44:42,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 17:44:42,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 17:44:42,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 17:44:42,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 17:44:42,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 17:44:42,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 17:44:42,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 17:44:42,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 17:44:42,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 17:44:42,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 17:44:42,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 17:44:42,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 17:44:42,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 17:44:42,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 17:44:42,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 17:44:42,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 17:44:42,760 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 17:44:42,788 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 17:44:42,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 17:44:42,789 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 17:44:42,790 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 17:44:42,790 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 17:44:42,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 17:44:42,791 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 17:44:42,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 17:44:42,791 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 17:44:42,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 17:44:42,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 17:44:42,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 17:44:42,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 17:44:42,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 17:44:42,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 17:44:42,792 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 17:44:42,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 17:44:42,793 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 17:44:42,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 17:44:42,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 17:44:42,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 17:44:42,793 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 17:44:42,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 17:44:42,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 17:44:42,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 17:44:42,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 17:44:42,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 17:44:42,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 17:44:42,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 17:44:42,794 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 17:44:42,795 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 17:44:42,795 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 17:44:42,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 17:44:43,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 17:44:43,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 17:44:43,024 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 17:44:43,028 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 17:44:43,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-2.i [2023-01-27 17:44:44,172 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 17:44:44,357 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 17:44:44,358 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i [2023-01-27 17:44:44,370 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89034d7f5/e114ca179da2489785489b330e00ded2/FLAG0fbb51a99 [2023-01-27 17:44:44,382 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89034d7f5/e114ca179da2489785489b330e00ded2 [2023-01-27 17:44:44,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 17:44:44,387 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 17:44:44,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 17:44:44,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 17:44:44,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 17:44:44,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 05:44:44" (1/1) ... [2023-01-27 17:44:44,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b162b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:44:44, skipping insertion in model container [2023-01-27 17:44:44,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 05:44:44" (1/1) ... [2023-01-27 17:44:44,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 17:44:44,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 17:44:44,738 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i[30963,30976] [2023-01-27 17:44:44,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 17:44:44,753 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 17:44:44,802 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i[30963,30976] [2023-01-27 17:44:44,803 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 17:44:44,828 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 17:44:44,829 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 17:44:44,836 INFO L208 MainTranslator]: Completed translation [2023-01-27 17:44:44,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:44:44 WrapperNode [2023-01-27 17:44:44,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 17:44:44,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 17:44:44,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 17:44:44,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 17:44:44,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:44:44" (1/1) ... [2023-01-27 17:44:44,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:44:44" (1/1) ... [2023-01-27 17:44:44,876 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-01-27 17:44:44,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 17:44:44,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 17:44:44,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 17:44:44,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 17:44:44,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:44:44" (1/1) ... [2023-01-27 17:44:44,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:44:44" (1/1) ... [2023-01-27 17:44:44,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:44:44" (1/1) ... [2023-01-27 17:44:44,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:44:44" (1/1) ... [2023-01-27 17:44:44,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:44:44" (1/1) ... [2023-01-27 17:44:44,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:44:44" (1/1) ... [2023-01-27 17:44:44,911 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:44:44" (1/1) ... [2023-01-27 17:44:44,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:44:44" (1/1) ... [2023-01-27 17:44:44,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 17:44:44,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 17:44:44,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 17:44:44,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 17:44:44,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:44:44" (1/1) ... [2023-01-27 17:44:44,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 17:44:44,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:44:44,947 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 17:44:44,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 17:44:44,984 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-01-27 17:44:44,985 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-01-27 17:44:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-01-27 17:44:44,985 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-01-27 17:44:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 17:44:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 17:44:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 17:44:44,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 17:44:44,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 17:44:44,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 17:44:44,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 17:44:44,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 17:44:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 17:44:44,988 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 17:44:45,171 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 17:44:45,174 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 17:44:45,278 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 17:44:45,284 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 17:44:45,284 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-27 17:44:45,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 05:44:45 BoogieIcfgContainer [2023-01-27 17:44:45,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 17:44:45,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 17:44:45,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 17:44:45,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 17:44:45,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 05:44:44" (1/3) ... [2023-01-27 17:44:45,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e7b3df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 05:44:45, skipping insertion in model container [2023-01-27 17:44:45,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:44:44" (2/3) ... [2023-01-27 17:44:45,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e7b3df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 05:44:45, skipping insertion in model container [2023-01-27 17:44:45,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 05:44:45" (3/3) ... [2023-01-27 17:44:45,292 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2023-01-27 17:44:45,312 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 17:44:45,312 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 17:44:45,312 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 17:44:45,366 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-27 17:44:45,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 66 transitions, 142 flow [2023-01-27 17:44:45,446 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2023-01-27 17:44:45,446 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 17:44:45,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-01-27 17:44:45,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 66 transitions, 142 flow [2023-01-27 17:44:45,454 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 64 transitions, 134 flow [2023-01-27 17:44:45,457 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 17:44:45,463 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 64 transitions, 134 flow [2023-01-27 17:44:45,466 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 64 transitions, 134 flow [2023-01-27 17:44:45,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 64 transitions, 134 flow [2023-01-27 17:44:45,482 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2023-01-27 17:44:45,483 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 17:44:45,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-01-27 17:44:45,484 INFO L119 LiptonReduction]: Number of co-enabled transitions 1078 [2023-01-27 17:44:47,382 INFO L134 LiptonReduction]: Checked pairs total: 999 [2023-01-27 17:44:47,382 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-01-27 17:44:47,403 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 17:44:47,412 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;@1c46b7b0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 17:44:47,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 17:44:47,418 INFO L130 PetriNetUnfolder]: 3/13 cut-off events. [2023-01-27 17:44:47,419 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 17:44:47,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:44:47,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-27 17:44:47,420 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 17:44:47,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:44:47,426 INFO L85 PathProgramCache]: Analyzing trace with hash -776471266, now seen corresponding path program 1 times [2023-01-27 17:44:47,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:44:47,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124366938] [2023-01-27 17:44:47,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:44:47,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:44:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:44:47,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:47,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:44:47,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124366938] [2023-01-27 17:44:47,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124366938] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:44:47,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:44:47,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 17:44:47,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609558792] [2023-01-27 17:44:47,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:44:47,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 17:44:47,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:44:47,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 17:44:47,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 17:44:47,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-27 17:44:47,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:47,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:44:47,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-27 17:44:47,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:44:47,938 INFO L130 PetriNetUnfolder]: 94/152 cut-off events. [2023-01-27 17:44:47,939 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 17:44:47,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 94/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 393 event pairs, 11 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 306. Up to 76 conditions per place. [2023-01-27 17:44:47,943 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 18 selfloop transitions, 4 changer transitions 4/26 dead transitions. [2023-01-27 17:44:47,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 26 transitions, 110 flow [2023-01-27 17:44:47,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 17:44:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 17:44:47,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2023-01-27 17:44:47,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46975806451612906 [2023-01-27 17:44:47,960 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 233 transitions. [2023-01-27 17:44:47,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 233 transitions. [2023-01-27 17:44:47,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:44:47,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 233 transitions. [2023-01-27 17:44:47,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:47,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:47,974 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:47,975 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 4 states and 233 transitions. [2023-01-27 17:44:47,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 26 transitions, 110 flow [2023-01-27 17:44:47,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 17:44:47,979 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 53 flow [2023-01-27 17:44:47,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=53, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-01-27 17:44:47,984 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2023-01-27 17:44:47,985 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 53 flow [2023-01-27 17:44:47,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:47,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:44:47,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:44:47,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 17:44:47,986 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 17:44:47,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:44:47,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1135033148, now seen corresponding path program 1 times [2023-01-27 17:44:47,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:44:47,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321287390] [2023-01-27 17:44:47,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:44:47,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:44:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:44:48,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:48,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:44:48,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321287390] [2023-01-27 17:44:48,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321287390] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:44:48,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:44:48,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 17:44:48,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914449552] [2023-01-27 17:44:48,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:44:48,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 17:44:48,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:44:48,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 17:44:48,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 17:44:48,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-27 17:44:48,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 52.6) internal successors, (263), 5 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:48,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:44:48,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-27 17:44:48,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:44:48,232 INFO L130 PetriNetUnfolder]: 126/217 cut-off events. [2023-01-27 17:44:48,233 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2023-01-27 17:44:48,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 217 events. 126/217 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 654 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 535. Up to 89 conditions per place. [2023-01-27 17:44:48,237 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2023-01-27 17:44:48,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 42 transitions, 215 flow [2023-01-27 17:44:48,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 17:44:48,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 17:44:48,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 344 transitions. [2023-01-27 17:44:48,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46236559139784944 [2023-01-27 17:44:48,243 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 344 transitions. [2023-01-27 17:44:48,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 344 transitions. [2023-01-27 17:44:48,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:44:48,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 344 transitions. [2023-01-27 17:44:48,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 57.333333333333336) internal successors, (344), 6 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:48,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:48,249 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:48,249 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 53 flow. Second operand 6 states and 344 transitions. [2023-01-27 17:44:48,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 42 transitions, 215 flow [2023-01-27 17:44:48,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 42 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 17:44:48,252 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 134 flow [2023-01-27 17:44:48,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-01-27 17:44:48,253 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 11 predicate places. [2023-01-27 17:44:48,253 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 134 flow [2023-01-27 17:44:48,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.6) internal successors, (263), 5 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:48,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:44:48,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:44:48,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 17:44:48,254 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 17:44:48,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:44:48,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1135047098, now seen corresponding path program 2 times [2023-01-27 17:44:48,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:44:48,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838618232] [2023-01-27 17:44:48,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:44:48,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:44:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:44:48,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:48,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:44:48,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838618232] [2023-01-27 17:44:48,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838618232] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:44:48,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:44:48,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 17:44:48,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127216531] [2023-01-27 17:44:48,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:44:48,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 17:44:48,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:44:48,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 17:44:48,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 17:44:48,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-27 17:44:48,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 52.6) internal successors, (263), 5 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:48,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:44:48,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-27 17:44:48,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:44:48,475 INFO L130 PetriNetUnfolder]: 114/199 cut-off events. [2023-01-27 17:44:48,476 INFO L131 PetriNetUnfolder]: For 280/280 co-relation queries the response was YES. [2023-01-27 17:44:48,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 199 events. 114/199 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 630 event pairs, 19 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 636. Up to 84 conditions per place. [2023-01-27 17:44:48,480 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 29 selfloop transitions, 9 changer transitions 4/42 dead transitions. [2023-01-27 17:44:48,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 284 flow [2023-01-27 17:44:48,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 17:44:48,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 17:44:48,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 288 transitions. [2023-01-27 17:44:48,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645161290322581 [2023-01-27 17:44:48,482 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 288 transitions. [2023-01-27 17:44:48,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 288 transitions. [2023-01-27 17:44:48,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:44:48,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 288 transitions. [2023-01-27 17:44:48,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:48,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:48,485 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:48,485 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 134 flow. Second operand 5 states and 288 transitions. [2023-01-27 17:44:48,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 284 flow [2023-01-27 17:44:48,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 282 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-27 17:44:48,490 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 182 flow [2023-01-27 17:44:48,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-01-27 17:44:48,492 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 17 predicate places. [2023-01-27 17:44:48,494 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 182 flow [2023-01-27 17:44:48,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.6) internal successors, (263), 5 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:48,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:44:48,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:44:48,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 17:44:48,496 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 17:44:48,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:44:48,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1601852847, now seen corresponding path program 1 times [2023-01-27 17:44:48,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:44:48,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841185273] [2023-01-27 17:44:48,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:44:48,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:44:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:44:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:48,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:44:48,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841185273] [2023-01-27 17:44:48,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841185273] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:44:48,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:44:48,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 17:44:48,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146697224] [2023-01-27 17:44:48,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:44:48,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 17:44:48,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:44:48,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 17:44:48,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 17:44:48,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-27 17:44:48,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:48,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:44:48,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-27 17:44:48,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:44:48,740 INFO L130 PetriNetUnfolder]: 136/239 cut-off events. [2023-01-27 17:44:48,740 INFO L131 PetriNetUnfolder]: For 571/571 co-relation queries the response was YES. [2023-01-27 17:44:48,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 239 events. 136/239 cut-off events. For 571/571 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 797 event pairs, 31 based on Foata normal form. 4/243 useless extension candidates. Maximal degree in co-relation 842. Up to 101 conditions per place. [2023-01-27 17:44:48,742 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 30 selfloop transitions, 16 changer transitions 8/54 dead transitions. [2023-01-27 17:44:48,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 419 flow [2023-01-27 17:44:48,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 17:44:48,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 17:44:48,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 398 transitions. [2023-01-27 17:44:48,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45852534562211983 [2023-01-27 17:44:48,745 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 398 transitions. [2023-01-27 17:44:48,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 398 transitions. [2023-01-27 17:44:48,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:44:48,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 398 transitions. [2023-01-27 17:44:48,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 56.857142857142854) internal successors, (398), 7 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:48,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:48,748 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:48,749 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 182 flow. Second operand 7 states and 398 transitions. [2023-01-27 17:44:48,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 419 flow [2023-01-27 17:44:48,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 379 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-01-27 17:44:48,753 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 269 flow [2023-01-27 17:44:48,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2023-01-27 17:44:48,754 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 22 predicate places. [2023-01-27 17:44:48,754 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 269 flow [2023-01-27 17:44:48,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:48,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:44:48,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:44:48,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 17:44:48,755 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 17:44:48,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:44:48,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1601722647, now seen corresponding path program 2 times [2023-01-27 17:44:48,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:44:48,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798977602] [2023-01-27 17:44:48,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:44:48,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:44:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:44:48,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:48,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:44:48,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798977602] [2023-01-27 17:44:48,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798977602] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:44:48,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:44:48,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 17:44:48,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449879029] [2023-01-27 17:44:48,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:44:48,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 17:44:48,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:44:48,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 17:44:48,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 17:44:48,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-27 17:44:48,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:48,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:44:48,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-27 17:44:48,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:44:49,014 INFO L130 PetriNetUnfolder]: 172/303 cut-off events. [2023-01-27 17:44:49,014 INFO L131 PetriNetUnfolder]: For 787/787 co-relation queries the response was YES. [2023-01-27 17:44:49,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 303 events. 172/303 cut-off events. For 787/787 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1053 event pairs, 22 based on Foata normal form. 8/311 useless extension candidates. Maximal degree in co-relation 1127. Up to 79 conditions per place. [2023-01-27 17:44:49,017 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 38 selfloop transitions, 22 changer transitions 3/63 dead transitions. [2023-01-27 17:44:49,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 519 flow [2023-01-27 17:44:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 17:44:49,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 17:44:49,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 454 transitions. [2023-01-27 17:44:49,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576612903225806 [2023-01-27 17:44:49,019 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 454 transitions. [2023-01-27 17:44:49,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 454 transitions. [2023-01-27 17:44:49,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:44:49,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 454 transitions. [2023-01-27 17:44:49,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 56.75) internal successors, (454), 8 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:49,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:49,023 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:49,023 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 269 flow. Second operand 8 states and 454 transitions. [2023-01-27 17:44:49,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 519 flow [2023-01-27 17:44:49,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 63 transitions, 495 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-01-27 17:44:49,030 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 375 flow [2023-01-27 17:44:49,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=375, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-01-27 17:44:49,032 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 32 predicate places. [2023-01-27 17:44:49,032 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 375 flow [2023-01-27 17:44:49,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:49,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:44:49,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:44:49,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 17:44:49,033 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 17:44:49,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:44:49,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1572215607, now seen corresponding path program 3 times [2023-01-27 17:44:49,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:44:49,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2746957] [2023-01-27 17:44:49,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:44:49,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:44:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:44:49,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:49,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:44:49,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2746957] [2023-01-27 17:44:49,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2746957] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:44:49,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:44:49,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 17:44:49,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55122167] [2023-01-27 17:44:49,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:44:49,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 17:44:49,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:44:49,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 17:44:49,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-01-27 17:44:49,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-27 17:44:49,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 375 flow. Second operand has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:49,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:44:49,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-27 17:44:49,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:44:49,239 INFO L130 PetriNetUnfolder]: 168/295 cut-off events. [2023-01-27 17:44:49,239 INFO L131 PetriNetUnfolder]: For 1394/1394 co-relation queries the response was YES. [2023-01-27 17:44:49,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1328 conditions, 295 events. 168/295 cut-off events. For 1394/1394 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1049 event pairs, 18 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1299. Up to 71 conditions per place. [2023-01-27 17:44:49,242 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 28 selfloop transitions, 27 changer transitions 10/65 dead transitions. [2023-01-27 17:44:49,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 651 flow [2023-01-27 17:44:49,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 17:44:49,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 17:44:49,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 453 transitions. [2023-01-27 17:44:49,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4566532258064516 [2023-01-27 17:44:49,245 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 453 transitions. [2023-01-27 17:44:49,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 453 transitions. [2023-01-27 17:44:49,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:44:49,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 453 transitions. [2023-01-27 17:44:49,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 56.625) internal successors, (453), 8 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:49,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:49,248 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:49,248 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 375 flow. Second operand 8 states and 453 transitions. [2023-01-27 17:44:49,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 651 flow [2023-01-27 17:44:49,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 65 transitions, 617 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-01-27 17:44:49,255 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 476 flow [2023-01-27 17:44:49,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=476, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2023-01-27 17:44:49,257 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 39 predicate places. [2023-01-27 17:44:49,257 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 476 flow [2023-01-27 17:44:49,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:49,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:44:49,259 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:44:49,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 17:44:49,259 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 17:44:49,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:44:49,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1868187119, now seen corresponding path program 4 times [2023-01-27 17:44:49,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:44:49,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503720811] [2023-01-27 17:44:49,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:44:49,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:44:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:44:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:49,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:44:49,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503720811] [2023-01-27 17:44:49,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503720811] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 17:44:49,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264654951] [2023-01-27 17:44:49,365 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 17:44:49,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 17:44:49,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:44:49,377 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 17:44:49,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 17:44:49,458 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 17:44:49,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 17:44:49,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 17:44:49,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 17:44:49,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:49,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 17:44:49,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:49,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264654951] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 17:44:49,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 17:44:49,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-01-27 17:44:49,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554716223] [2023-01-27 17:44:49,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 17:44:49,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 17:44:49,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:44:49,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 17:44:49,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-01-27 17:44:49,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-27 17:44:49,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 476 flow. Second operand has 12 states, 12 states have (on average 52.833333333333336) internal successors, (634), 12 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:49,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:44:49,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-27 17:44:49,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:44:49,855 INFO L130 PetriNetUnfolder]: 192/343 cut-off events. [2023-01-27 17:44:49,855 INFO L131 PetriNetUnfolder]: For 2705/2705 co-relation queries the response was YES. [2023-01-27 17:44:49,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1694 conditions, 343 events. 192/343 cut-off events. For 2705/2705 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1207 event pairs, 39 based on Foata normal form. 24/367 useless extension candidates. Maximal degree in co-relation 1662. Up to 181 conditions per place. [2023-01-27 17:44:49,858 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 45 selfloop transitions, 19 changer transitions 19/83 dead transitions. [2023-01-27 17:44:49,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 83 transitions, 916 flow [2023-01-27 17:44:49,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 17:44:49,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 17:44:49,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 677 transitions. [2023-01-27 17:44:49,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4549731182795699 [2023-01-27 17:44:49,860 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 677 transitions. [2023-01-27 17:44:49,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 677 transitions. [2023-01-27 17:44:49,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:44:49,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 677 transitions. [2023-01-27 17:44:49,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 56.416666666666664) internal successors, (677), 12 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:49,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 124.0) internal successors, (1612), 13 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:49,865 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 124.0) internal successors, (1612), 13 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:49,865 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 476 flow. Second operand 12 states and 677 transitions. [2023-01-27 17:44:49,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 83 transitions, 916 flow [2023-01-27 17:44:49,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 83 transitions, 861 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-01-27 17:44:49,874 INFO L231 Difference]: Finished difference. Result has 69 places, 49 transitions, 586 flow [2023-01-27 17:44:49,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=586, PETRI_PLACES=69, PETRI_TRANSITIONS=49} [2023-01-27 17:44:49,874 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 51 predicate places. [2023-01-27 17:44:49,875 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 49 transitions, 586 flow [2023-01-27 17:44:49,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 52.833333333333336) internal successors, (634), 12 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:49,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:44:49,875 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:44:49,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 17:44:50,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 17:44:50,082 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 17:44:50,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:44:50,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1881593069, now seen corresponding path program 5 times [2023-01-27 17:44:50,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:44:50,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516959356] [2023-01-27 17:44:50,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:44:50,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:44:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:44:50,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:50,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:44:50,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516959356] [2023-01-27 17:44:50,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516959356] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 17:44:50,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27174203] [2023-01-27 17:44:50,224 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 17:44:50,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 17:44:50,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:44:50,225 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 17:44:50,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 17:44:50,291 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 17:44:50,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 17:44:50,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 17:44:50,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 17:44:50,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:50,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 17:44:50,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:50,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27174203] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 17:44:50,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 17:44:50,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-01-27 17:44:50,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259682454] [2023-01-27 17:44:50,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 17:44:50,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 17:44:50,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:44:50,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 17:44:50,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-01-27 17:44:50,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-27 17:44:50,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 49 transitions, 586 flow. Second operand has 13 states, 13 states have (on average 52.92307692307692) internal successors, (688), 13 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:50,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:44:50,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-27 17:44:50,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:44:50,838 INFO L130 PetriNetUnfolder]: 254/459 cut-off events. [2023-01-27 17:44:50,838 INFO L131 PetriNetUnfolder]: For 6988/6988 co-relation queries the response was YES. [2023-01-27 17:44:50,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2615 conditions, 459 events. 254/459 cut-off events. For 6988/6988 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1795 event pairs, 28 based on Foata normal form. 28/487 useless extension candidates. Maximal degree in co-relation 2577. Up to 131 conditions per place. [2023-01-27 17:44:50,842 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 46 selfloop transitions, 44 changer transitions 29/119 dead transitions. [2023-01-27 17:44:50,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 119 transitions, 1453 flow [2023-01-27 17:44:50,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-27 17:44:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-27 17:44:50,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1015 transitions. [2023-01-27 17:44:50,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45474910394265233 [2023-01-27 17:44:50,846 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1015 transitions. [2023-01-27 17:44:50,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1015 transitions. [2023-01-27 17:44:50,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:44:50,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1015 transitions. [2023-01-27 17:44:50,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 56.388888888888886) internal successors, (1015), 18 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:50,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:50,852 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:50,853 INFO L175 Difference]: Start difference. First operand has 69 places, 49 transitions, 586 flow. Second operand 18 states and 1015 transitions. [2023-01-27 17:44:50,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 119 transitions, 1453 flow [2023-01-27 17:44:50,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 119 transitions, 1310 flow, removed 59 selfloop flow, removed 5 redundant places. [2023-01-27 17:44:50,870 INFO L231 Difference]: Finished difference. Result has 91 places, 66 transitions, 944 flow [2023-01-27 17:44:50,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=944, PETRI_PLACES=91, PETRI_TRANSITIONS=66} [2023-01-27 17:44:50,872 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 73 predicate places. [2023-01-27 17:44:50,872 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 66 transitions, 944 flow [2023-01-27 17:44:50,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.92307692307692) internal successors, (688), 13 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:50,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:44:50,873 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:44:50,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 17:44:51,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-01-27 17:44:51,079 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 17:44:51,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:44:51,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1657155026, now seen corresponding path program 6 times [2023-01-27 17:44:51,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:44:51,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503038735] [2023-01-27 17:44:51,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:44:51,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:44:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:44:51,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:51,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:44:51,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503038735] [2023-01-27 17:44:51,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503038735] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 17:44:51,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740678566] [2023-01-27 17:44:51,187 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 17:44:51,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 17:44:51,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:44:51,188 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 17:44:51,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 17:44:51,258 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-27 17:44:51,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 17:44:51,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 17:44:51,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 17:44:51,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:51,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 17:44:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:51,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740678566] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 17:44:51,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 17:44:51,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-01-27 17:44:51,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410419196] [2023-01-27 17:44:51,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 17:44:51,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 17:44:51,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:44:51,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 17:44:51,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-01-27 17:44:51,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-27 17:44:51,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 66 transitions, 944 flow. Second operand has 14 states, 14 states have (on average 52.714285714285715) internal successors, (738), 14 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:51,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:44:51,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-27 17:44:51,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:44:51,704 INFO L130 PetriNetUnfolder]: 338/619 cut-off events. [2023-01-27 17:44:51,704 INFO L131 PetriNetUnfolder]: For 15431/15431 co-relation queries the response was YES. [2023-01-27 17:44:51,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4526 conditions, 619 events. 338/619 cut-off events. For 15431/15431 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2646 event pairs, 27 based on Foata normal form. 24/643 useless extension candidates. Maximal degree in co-relation 4478. Up to 207 conditions per place. [2023-01-27 17:44:51,711 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 56 selfloop transitions, 60 changer transitions 19/135 dead transitions. [2023-01-27 17:44:51,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 135 transitions, 2183 flow [2023-01-27 17:44:51,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-27 17:44:51,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-27 17:44:51,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1010 transitions. [2023-01-27 17:44:51,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4525089605734767 [2023-01-27 17:44:51,714 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1010 transitions. [2023-01-27 17:44:51,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1010 transitions. [2023-01-27 17:44:51,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:44:51,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1010 transitions. [2023-01-27 17:44:51,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 56.111111111111114) internal successors, (1010), 18 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:51,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:51,722 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:51,722 INFO L175 Difference]: Start difference. First operand has 91 places, 66 transitions, 944 flow. Second operand 18 states and 1010 transitions. [2023-01-27 17:44:51,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 135 transitions, 2183 flow [2023-01-27 17:44:51,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 135 transitions, 1903 flow, removed 130 selfloop flow, removed 4 redundant places. [2023-01-27 17:44:51,768 INFO L231 Difference]: Finished difference. Result has 112 places, 82 transitions, 1311 flow [2023-01-27 17:44:51,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1311, PETRI_PLACES=112, PETRI_TRANSITIONS=82} [2023-01-27 17:44:51,769 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 94 predicate places. [2023-01-27 17:44:51,769 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 82 transitions, 1311 flow [2023-01-27 17:44:51,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 52.714285714285715) internal successors, (738), 14 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:51,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:44:51,770 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:44:51,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-27 17:44:51,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 17:44:51,976 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 17:44:51,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:44:51,976 INFO L85 PathProgramCache]: Analyzing trace with hash 929897188, now seen corresponding path program 7 times [2023-01-27 17:44:51,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:44:51,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269063087] [2023-01-27 17:44:51,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:44:51,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:44:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:44:52,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:52,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:44:52,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269063087] [2023-01-27 17:44:52,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269063087] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 17:44:52,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985282397] [2023-01-27 17:44:52,074 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 17:44:52,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 17:44:52,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:44:52,075 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 17:44:52,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 17:44:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:44:52,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 17:44:52,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 17:44:52,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:52,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 17:44:52,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:52,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985282397] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 17:44:52,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 17:44:52,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-01-27 17:44:52,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214355919] [2023-01-27 17:44:52,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 17:44:52,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 17:44:52,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:44:52,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 17:44:52,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-01-27 17:44:52,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-27 17:44:52,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 82 transitions, 1311 flow. Second operand has 15 states, 15 states have (on average 52.733333333333334) internal successors, (791), 15 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:52,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:44:52,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-27 17:44:52,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:44:52,689 INFO L130 PetriNetUnfolder]: 390/711 cut-off events. [2023-01-27 17:44:52,689 INFO L131 PetriNetUnfolder]: For 27776/27776 co-relation queries the response was YES. [2023-01-27 17:44:52,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5902 conditions, 711 events. 390/711 cut-off events. For 27776/27776 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3090 event pairs, 12 based on Foata normal form. 24/735 useless extension candidates. Maximal degree in co-relation 5847. Up to 238 conditions per place. [2023-01-27 17:44:52,697 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 45 selfloop transitions, 84 changer transitions 36/165 dead transitions. [2023-01-27 17:44:52,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 165 transitions, 2973 flow [2023-01-27 17:44:52,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-27 17:44:52,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-27 17:44:52,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1182 transitions. [2023-01-27 17:44:52,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4539170506912442 [2023-01-27 17:44:52,702 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1182 transitions. [2023-01-27 17:44:52,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1182 transitions. [2023-01-27 17:44:52,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:44:52,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1182 transitions. [2023-01-27 17:44:52,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 56.285714285714285) internal successors, (1182), 21 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:52,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:52,710 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:52,710 INFO L175 Difference]: Start difference. First operand has 112 places, 82 transitions, 1311 flow. Second operand 21 states and 1182 transitions. [2023-01-27 17:44:52,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 165 transitions, 2973 flow [2023-01-27 17:44:52,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 165 transitions, 2401 flow, removed 246 selfloop flow, removed 12 redundant places. [2023-01-27 17:44:52,755 INFO L231 Difference]: Finished difference. Result has 130 places, 101 transitions, 1712 flow [2023-01-27 17:44:52,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1712, PETRI_PLACES=130, PETRI_TRANSITIONS=101} [2023-01-27 17:44:52,756 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 112 predicate places. [2023-01-27 17:44:52,756 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 101 transitions, 1712 flow [2023-01-27 17:44:52,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 52.733333333333334) internal successors, (791), 15 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:52,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:44:52,757 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:44:52,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 17:44:52,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 17:44:52,962 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 17:44:52,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:44:52,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1150765664, now seen corresponding path program 8 times [2023-01-27 17:44:52,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:44:52,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151168675] [2023-01-27 17:44:52,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:44:52,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:44:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:44:53,093 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:53,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:44:53,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151168675] [2023-01-27 17:44:53,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151168675] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 17:44:53,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432913432] [2023-01-27 17:44:53,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 17:44:53,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 17:44:53,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:44:53,095 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 17:44:53,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 17:44:53,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 17:44:53,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 17:44:53,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-27 17:44:53,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 17:44:53,220 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:53,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 17:44:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:53,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432913432] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 17:44:53,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 17:44:53,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-01-27 17:44:53,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062133842] [2023-01-27 17:44:53,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 17:44:53,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-27 17:44:53,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:44:53,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-27 17:44:53,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-01-27 17:44:53,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-27 17:44:53,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 101 transitions, 1712 flow. Second operand has 22 states, 22 states have (on average 52.5) internal successors, (1155), 22 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:53,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:44:53,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-27 17:44:53,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:44:54,186 INFO L130 PetriNetUnfolder]: 538/959 cut-off events. [2023-01-27 17:44:54,187 INFO L131 PetriNetUnfolder]: For 42829/42829 co-relation queries the response was YES. [2023-01-27 17:44:54,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8737 conditions, 959 events. 538/959 cut-off events. For 42829/42829 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4119 event pairs, 15 based on Foata normal form. 36/995 useless extension candidates. Maximal degree in co-relation 8675. Up to 330 conditions per place. [2023-01-27 17:44:54,198 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 60 selfloop transitions, 121 changer transitions 66/247 dead transitions. [2023-01-27 17:44:54,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 247 transitions, 4924 flow [2023-01-27 17:44:54,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-01-27 17:44:54,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-01-27 17:44:54,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2018 transitions. [2023-01-27 17:44:54,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520609318996416 [2023-01-27 17:44:54,205 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2018 transitions. [2023-01-27 17:44:54,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2018 transitions. [2023-01-27 17:44:54,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:44:54,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2018 transitions. [2023-01-27 17:44:54,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 56.05555555555556) internal successors, (2018), 36 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:54,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 124.0) internal successors, (4588), 37 states have internal predecessors, (4588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:54,216 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 124.0) internal successors, (4588), 37 states have internal predecessors, (4588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:54,217 INFO L175 Difference]: Start difference. First operand has 130 places, 101 transitions, 1712 flow. Second operand 36 states and 2018 transitions. [2023-01-27 17:44:54,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 247 transitions, 4924 flow [2023-01-27 17:44:54,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 247 transitions, 4317 flow, removed 265 selfloop flow, removed 14 redundant places. [2023-01-27 17:44:54,279 INFO L231 Difference]: Finished difference. Result has 169 places, 138 transitions, 2757 flow [2023-01-27 17:44:54,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2757, PETRI_PLACES=169, PETRI_TRANSITIONS=138} [2023-01-27 17:44:54,279 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 151 predicate places. [2023-01-27 17:44:54,280 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 138 transitions, 2757 flow [2023-01-27 17:44:54,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 52.5) internal successors, (1155), 22 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:54,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:44:54,280 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:44:54,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-27 17:44:54,486 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,SelfDestructingSolverStorable10 [2023-01-27 17:44:54,486 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 17:44:54,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:44:54,487 INFO L85 PathProgramCache]: Analyzing trace with hash 2052641735, now seen corresponding path program 9 times [2023-01-27 17:44:54,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:44:54,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393280775] [2023-01-27 17:44:54,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:44:54,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:44:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:44:54,797 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:54,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:44:54,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393280775] [2023-01-27 17:44:54,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393280775] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 17:44:54,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760132] [2023-01-27 17:44:54,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 17:44:54,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 17:44:54,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:44:54,799 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 17:44:54,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 17:44:54,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-01-27 17:44:54,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 17:44:54,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 17:44:54,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 17:44:54,955 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:54,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 17:44:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:55,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760132] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 17:44:55,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 17:44:55,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2023-01-27 17:44:55,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528680633] [2023-01-27 17:44:55,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 17:44:55,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-27 17:44:55,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:44:55,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-27 17:44:55,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=866, Unknown=0, NotChecked=0, Total=1122 [2023-01-27 17:44:55,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-27 17:44:55,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 138 transitions, 2757 flow. Second operand has 34 states, 34 states have (on average 52.3235294117647) internal successors, (1779), 34 states have internal predecessors, (1779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:55,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:44:55,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-27 17:44:55,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:44:56,191 INFO L130 PetriNetUnfolder]: 674/1231 cut-off events. [2023-01-27 17:44:56,192 INFO L131 PetriNetUnfolder]: For 90353/90353 co-relation queries the response was YES. [2023-01-27 17:44:56,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13996 conditions, 1231 events. 674/1231 cut-off events. For 90353/90353 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5569 event pairs, 99 based on Foata normal form. 24/1255 useless extension candidates. Maximal degree in co-relation 13921. Up to 466 conditions per place. [2023-01-27 17:44:56,209 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 113 selfloop transitions, 100 changer transitions 71/284 dead transitions. [2023-01-27 17:44:56,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 284 transitions, 6988 flow [2023-01-27 17:44:56,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-01-27 17:44:56,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-01-27 17:44:56,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2109 transitions. [2023-01-27 17:44:56,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4475806451612903 [2023-01-27 17:44:56,214 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2109 transitions. [2023-01-27 17:44:56,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2109 transitions. [2023-01-27 17:44:56,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:44:56,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2109 transitions. [2023-01-27 17:44:56,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 55.5) internal successors, (2109), 38 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:56,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 124.0) internal successors, (4836), 39 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:56,225 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 124.0) internal successors, (4836), 39 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:56,225 INFO L175 Difference]: Start difference. First operand has 169 places, 138 transitions, 2757 flow. Second operand 38 states and 2109 transitions. [2023-01-27 17:44:56,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 284 transitions, 6988 flow [2023-01-27 17:44:56,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 284 transitions, 5397 flow, removed 763 selfloop flow, removed 13 redundant places. [2023-01-27 17:44:56,453 INFO L231 Difference]: Finished difference. Result has 201 places, 172 transitions, 3027 flow [2023-01-27 17:44:56,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3027, PETRI_PLACES=201, PETRI_TRANSITIONS=172} [2023-01-27 17:44:56,454 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 183 predicate places. [2023-01-27 17:44:56,454 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 172 transitions, 3027 flow [2023-01-27 17:44:56,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 52.3235294117647) internal successors, (1779), 34 states have internal predecessors, (1779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:56,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:44:56,455 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:44:56,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 17:44:56,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 17:44:56,664 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 17:44:56,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:44:56,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1571369213, now seen corresponding path program 10 times [2023-01-27 17:44:56,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:44:56,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93665557] [2023-01-27 17:44:56,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:44:56,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:44:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:44:56,940 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:56,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:44:56,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93665557] [2023-01-27 17:44:56,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93665557] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 17:44:56,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727927910] [2023-01-27 17:44:56,940 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 17:44:56,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 17:44:56,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:44:56,942 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 17:44:56,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 17:44:57,020 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 17:44:57,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 17:44:57,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 17:44:57,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 17:44:57,095 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:57,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 17:44:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:57,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727927910] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 17:44:57,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 17:44:57,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-01-27 17:44:57,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273441257] [2023-01-27 17:44:57,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 17:44:57,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-01-27 17:44:57,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:44:57,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-01-27 17:44:57,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=984, Unknown=0, NotChecked=0, Total=1190 [2023-01-27 17:44:57,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-27 17:44:57,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 172 transitions, 3027 flow. Second operand has 35 states, 35 states have (on average 52.34285714285714) internal successors, (1832), 35 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:57,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:44:57,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-27 17:44:57,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:44:58,679 INFO L130 PetriNetUnfolder]: 858/1595 cut-off events. [2023-01-27 17:44:58,680 INFO L131 PetriNetUnfolder]: For 147518/147518 co-relation queries the response was YES. [2023-01-27 17:44:58,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17908 conditions, 1595 events. 858/1595 cut-off events. For 147518/147518 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7851 event pairs, 44 based on Foata normal form. 32/1627 useless extension candidates. Maximal degree in co-relation 17829. Up to 646 conditions per place. [2023-01-27 17:44:58,704 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 88 selfloop transitions, 180 changer transitions 83/351 dead transitions. [2023-01-27 17:44:58,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 351 transitions, 7742 flow [2023-01-27 17:44:58,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-01-27 17:44:58,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-01-27 17:44:58,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2450 transitions. [2023-01-27 17:44:58,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44904692082111436 [2023-01-27 17:44:58,709 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2450 transitions. [2023-01-27 17:44:58,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2450 transitions. [2023-01-27 17:44:58,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:44:58,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2450 transitions. [2023-01-27 17:44:58,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 55.68181818181818) internal successors, (2450), 44 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:58,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 124.0) internal successors, (5580), 45 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:58,721 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 124.0) internal successors, (5580), 45 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:58,721 INFO L175 Difference]: Start difference. First operand has 201 places, 172 transitions, 3027 flow. Second operand 44 states and 2450 transitions. [2023-01-27 17:44:58,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 351 transitions, 7742 flow [2023-01-27 17:44:59,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 351 transitions, 7093 flow, removed 257 selfloop flow, removed 17 redundant places. [2023-01-27 17:44:59,019 INFO L231 Difference]: Finished difference. Result has 238 places, 221 transitions, 4322 flow [2023-01-27 17:44:59,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2562, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4322, PETRI_PLACES=238, PETRI_TRANSITIONS=221} [2023-01-27 17:44:59,020 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 220 predicate places. [2023-01-27 17:44:59,020 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 221 transitions, 4322 flow [2023-01-27 17:44:59,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 52.34285714285714) internal successors, (1832), 35 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:59,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:44:59,021 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:44:59,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-27 17:44:59,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 17:44:59,226 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 17:44:59,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:44:59,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1553415691, now seen corresponding path program 11 times [2023-01-27 17:44:59,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:44:59,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378370717] [2023-01-27 17:44:59,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:44:59,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:44:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:44:59,464 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:59,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:44:59,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378370717] [2023-01-27 17:44:59,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378370717] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 17:44:59,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115730472] [2023-01-27 17:44:59,465 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 17:44:59,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 17:44:59,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:44:59,466 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 17:44:59,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 17:44:59,546 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-01-27 17:44:59,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 17:44:59,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 17:44:59,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 17:44:59,591 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:59,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 17:44:59,837 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:44:59,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115730472] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 17:44:59,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 17:44:59,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2023-01-27 17:44:59,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319621220] [2023-01-27 17:44:59,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 17:44:59,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-27 17:44:59,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:44:59,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-27 17:44:59,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=903, Unknown=0, NotChecked=0, Total=1122 [2023-01-27 17:44:59,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-27 17:44:59,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 221 transitions, 4322 flow. Second operand has 34 states, 34 states have (on average 52.3235294117647) internal successors, (1779), 34 states have internal predecessors, (1779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:44:59,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:44:59,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-27 17:44:59,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:45:00,956 INFO L130 PetriNetUnfolder]: 1022/1891 cut-off events. [2023-01-27 17:45:00,957 INFO L131 PetriNetUnfolder]: For 245129/245129 co-relation queries the response was YES. [2023-01-27 17:45:00,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24168 conditions, 1891 events. 1022/1891 cut-off events. For 245129/245129 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9476 event pairs, 16 based on Foata normal form. 32/1923 useless extension candidates. Maximal degree in co-relation 24077. Up to 778 conditions per place. [2023-01-27 17:45:00,984 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 81 selfloop transitions, 233 changer transitions 67/381 dead transitions. [2023-01-27 17:45:00,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 381 transitions, 9460 flow [2023-01-27 17:45:00,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-01-27 17:45:00,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-01-27 17:45:00,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2343 transitions. [2023-01-27 17:45:00,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4498847926267281 [2023-01-27 17:45:00,994 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2343 transitions. [2023-01-27 17:45:00,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2343 transitions. [2023-01-27 17:45:00,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:45:00,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2343 transitions. [2023-01-27 17:45:01,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 55.785714285714285) internal successors, (2343), 42 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:01,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 124.0) internal successors, (5332), 43 states have internal predecessors, (5332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:01,015 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 124.0) internal successors, (5332), 43 states have internal predecessors, (5332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:01,015 INFO L175 Difference]: Start difference. First operand has 238 places, 221 transitions, 4322 flow. Second operand 42 states and 2343 transitions. [2023-01-27 17:45:01,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 381 transitions, 9460 flow [2023-01-27 17:45:01,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 381 transitions, 8550 flow, removed 365 selfloop flow, removed 18 redundant places. [2023-01-27 17:45:01,449 INFO L231 Difference]: Finished difference. Result has 275 places, 258 transitions, 5412 flow [2023-01-27 17:45:01,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3436, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=5412, PETRI_PLACES=275, PETRI_TRANSITIONS=258} [2023-01-27 17:45:01,449 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 257 predicate places. [2023-01-27 17:45:01,450 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 258 transitions, 5412 flow [2023-01-27 17:45:01,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 52.3235294117647) internal successors, (1779), 34 states have internal predecessors, (1779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:01,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:45:01,451 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:45:01,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-27 17:45:01,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-27 17:45:01,657 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 17:45:01,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:45:01,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1171636794, now seen corresponding path program 12 times [2023-01-27 17:45:01,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:45:01,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607249284] [2023-01-27 17:45:01,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:45:01,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:45:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:45:01,919 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:45:01,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:45:01,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607249284] [2023-01-27 17:45:01,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607249284] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 17:45:01,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749925379] [2023-01-27 17:45:01,920 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 17:45:01,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 17:45:01,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:45:01,921 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 17:45:01,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-27 17:45:02,016 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-01-27 17:45:02,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 17:45:02,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 23 conjunts are in the unsatisfiable core [2023-01-27 17:45:02,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 17:45:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:45:02,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 17:45:02,301 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:45:02,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749925379] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 17:45:02,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 17:45:02,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 36 [2023-01-27 17:45:02,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273379093] [2023-01-27 17:45:02,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 17:45:02,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-01-27 17:45:02,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:45:02,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-01-27 17:45:02,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1086, Unknown=0, NotChecked=0, Total=1406 [2023-01-27 17:45:02,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-27 17:45:02,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 258 transitions, 5412 flow. Second operand has 38 states, 38 states have (on average 52.28947368421053) internal successors, (1987), 38 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:02,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:45:02,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-27 17:45:02,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:45:03,607 INFO L130 PetriNetUnfolder]: 1034/1911 cut-off events. [2023-01-27 17:45:03,607 INFO L131 PetriNetUnfolder]: For 341708/341708 co-relation queries the response was YES. [2023-01-27 17:45:03,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26921 conditions, 1911 events. 1034/1911 cut-off events. For 341708/341708 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9630 event pairs, 20 based on Foata normal form. 20/1931 useless extension candidates. Maximal degree in co-relation 26815. Up to 774 conditions per place. [2023-01-27 17:45:03,641 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 68 selfloop transitions, 243 changer transitions 74/385 dead transitions. [2023-01-27 17:45:03,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 385 transitions, 10213 flow [2023-01-27 17:45:03,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-01-27 17:45:03,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-01-27 17:45:03,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2231 transitions. [2023-01-27 17:45:03,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44979838709677417 [2023-01-27 17:45:03,646 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2231 transitions. [2023-01-27 17:45:03,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2231 transitions. [2023-01-27 17:45:03,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:45:03,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2231 transitions. [2023-01-27 17:45:03,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 55.775) internal successors, (2231), 40 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:03,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 124.0) internal successors, (5084), 41 states have internal predecessors, (5084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:03,659 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 124.0) internal successors, (5084), 41 states have internal predecessors, (5084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:03,659 INFO L175 Difference]: Start difference. First operand has 275 places, 258 transitions, 5412 flow. Second operand 40 states and 2231 transitions. [2023-01-27 17:45:03,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 385 transitions, 10213 flow [2023-01-27 17:45:04,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 385 transitions, 8925 flow, removed 532 selfloop flow, removed 20 redundant places. [2023-01-27 17:45:04,195 INFO L231 Difference]: Finished difference. Result has 301 places, 267 transitions, 5360 flow [2023-01-27 17:45:04,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4214, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=5360, PETRI_PLACES=301, PETRI_TRANSITIONS=267} [2023-01-27 17:45:04,196 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 283 predicate places. [2023-01-27 17:45:04,196 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 267 transitions, 5360 flow [2023-01-27 17:45:04,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 52.28947368421053) internal successors, (1987), 38 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:04,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:45:04,196 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:45:04,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-27 17:45:04,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-27 17:45:04,398 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 17:45:04,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:45:04,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1027063943, now seen corresponding path program 13 times [2023-01-27 17:45:04,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:45:04,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221509632] [2023-01-27 17:45:04,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:45:04,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:45:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:45:04,688 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:45:04,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:45:04,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221509632] [2023-01-27 17:45:04,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221509632] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 17:45:04,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335534026] [2023-01-27 17:45:04,688 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 17:45:04,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 17:45:04,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:45:04,690 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 17:45:04,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-27 17:45:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:45:04,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 24 conjunts are in the unsatisfiable core [2023-01-27 17:45:04,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 17:45:04,844 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:45:04,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 17:45:05,050 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:45:05,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335534026] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 17:45:05,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 17:45:05,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 26 [2023-01-27 17:45:05,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464592202] [2023-01-27 17:45:05,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 17:45:05,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-27 17:45:05,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:45:05,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-27 17:45:05,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2023-01-27 17:45:05,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-27 17:45:05,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 267 transitions, 5360 flow. Second operand has 28 states, 28 states have (on average 52.42857142857143) internal successors, (1468), 28 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:05,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:45:05,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-27 17:45:05,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:45:06,411 INFO L130 PetriNetUnfolder]: 1134/2087 cut-off events. [2023-01-27 17:45:06,411 INFO L131 PetriNetUnfolder]: For 405135/405135 co-relation queries the response was YES. [2023-01-27 17:45:06,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30427 conditions, 2087 events. 1134/2087 cut-off events. For 405135/405135 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 10528 event pairs, 15 based on Foata normal form. 20/2107 useless extension candidates. Maximal degree in co-relation 30315. Up to 834 conditions per place. [2023-01-27 17:45:06,439 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 80 selfloop transitions, 270 changer transitions 90/440 dead transitions. [2023-01-27 17:45:06,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 440 transitions, 11869 flow [2023-01-27 17:45:06,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-01-27 17:45:06,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-01-27 17:45:06,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 2680 transitions. [2023-01-27 17:45:06,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45026881720430106 [2023-01-27 17:45:06,444 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 2680 transitions. [2023-01-27 17:45:06,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 2680 transitions. [2023-01-27 17:45:06,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:45:06,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 2680 transitions. [2023-01-27 17:45:06,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 55.833333333333336) internal successors, (2680), 48 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:06,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 124.0) internal successors, (6076), 49 states have internal predecessors, (6076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:06,455 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 124.0) internal successors, (6076), 49 states have internal predecessors, (6076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:06,455 INFO L175 Difference]: Start difference. First operand has 301 places, 267 transitions, 5360 flow. Second operand 48 states and 2680 transitions. [2023-01-27 17:45:06,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 440 transitions, 11869 flow [2023-01-27 17:45:07,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 440 transitions, 10278 flow, removed 582 selfloop flow, removed 33 redundant places. [2023-01-27 17:45:07,204 INFO L231 Difference]: Finished difference. Result has 325 places, 292 transitions, 6204 flow [2023-01-27 17:45:07,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4445, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=6204, PETRI_PLACES=325, PETRI_TRANSITIONS=292} [2023-01-27 17:45:07,205 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 307 predicate places. [2023-01-27 17:45:07,205 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 292 transitions, 6204 flow [2023-01-27 17:45:07,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 52.42857142857143) internal successors, (1468), 28 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:07,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:45:07,205 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:45:07,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-27 17:45:07,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-27 17:45:07,412 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 17:45:07,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:45:07,412 INFO L85 PathProgramCache]: Analyzing trace with hash -697905322, now seen corresponding path program 14 times [2023-01-27 17:45:07,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:45:07,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372720755] [2023-01-27 17:45:07,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:45:07,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:45:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-27 17:45:07,427 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-27 17:45:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-27 17:45:07,476 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-27 17:45:07,476 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-27 17:45:07,477 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-27 17:45:07,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-27 17:45:07,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-27 17:45:07,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-27 17:45:07,479 INFO L445 BasicCegarLoop]: Path program histogram: [14, 2, 1] [2023-01-27 17:45:07,485 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 17:45:07,485 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 17:45:07,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 05:45:07 BasicIcfg [2023-01-27 17:45:07,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 17:45:07,546 INFO L158 Benchmark]: Toolchain (without parser) took 23159.24ms. Allocated memory was 352.3MB in the beginning and 597.7MB in the end (delta: 245.4MB). Free memory was 301.7MB in the beginning and 389.7MB in the end (delta: -88.0MB). Peak memory consumption was 158.1MB. Max. memory is 16.0GB. [2023-01-27 17:45:07,546 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 352.3MB. Free memory is still 301.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 17:45:07,546 INFO L158 Benchmark]: CACSL2BoogieTranslator took 449.53ms. Allocated memory is still 352.3MB. Free memory was 301.3MB in the beginning and 282.1MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-27 17:45:07,546 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.09ms. Allocated memory is still 352.3MB. Free memory was 282.1MB in the beginning and 280.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 17:45:07,547 INFO L158 Benchmark]: Boogie Preprocessor took 36.94ms. Allocated memory is still 352.3MB. Free memory was 280.4MB in the beginning and 279.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 17:45:07,547 INFO L158 Benchmark]: RCFGBuilder took 371.29ms. Allocated memory is still 352.3MB. Free memory was 279.0MB in the beginning and 266.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 17:45:07,547 INFO L158 Benchmark]: TraceAbstraction took 22257.53ms. Allocated memory was 352.3MB in the beginning and 597.7MB in the end (delta: 245.4MB). Free memory was 265.7MB in the beginning and 389.7MB in the end (delta: -124.0MB). Peak memory consumption was 122.4MB. Max. memory is 16.0GB. [2023-01-27 17:45:07,548 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 352.3MB. Free memory is still 301.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 449.53ms. Allocated memory is still 352.3MB. Free memory was 301.3MB in the beginning and 282.1MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.09ms. Allocated memory is still 352.3MB. Free memory was 282.1MB in the beginning and 280.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.94ms. Allocated memory is still 352.3MB. Free memory was 280.4MB in the beginning and 279.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 371.29ms. Allocated memory is still 352.3MB. Free memory was 279.0MB in the beginning and 266.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 22257.53ms. Allocated memory was 352.3MB in the beginning and 597.7MB in the end (delta: 245.4MB). Free memory was 265.7MB in the beginning and 389.7MB in the end (delta: -124.0MB). Peak memory consumption was 122.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 66 PlacesBefore, 18 PlacesAfterwards, 64 TransitionsBefore, 14 TransitionsAfterwards, 1078 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 58 TotalNumberOfCompositions, 999 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 856, independent: 829, independent conditional: 0, independent unconditional: 829, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 590, independent: 578, independent conditional: 0, independent unconditional: 578, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 856, independent: 251, independent conditional: 0, independent unconditional: 251, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 590, unknown conditional: 0, unknown unconditional: 590] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 10, Positive conditional cache size: 0, Positive unconditional cache size: 10, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, i=3, id1={5:0}, id2={3:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, i=3, id1={5:0}, id2={3:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=7] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*10 +6); VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, condI=0, i=7, id1={5:0}, id2={3:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L719] 0 int condJ = j >= (2*10 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, condI=0, condJ=1, i=25, id1={5:0}, id2={3:0}, j=26, k=10, k=10] - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 84 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: 22.1s, OverallIterations: 17, TraceHistogramMax: 10, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 11.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3859 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3859 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 368 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3028 IncrementalHoareTripleChecker+Invalid, 3396 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 368 mSolverCounterUnsat, 0 mSDtfsCounter, 3028 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 762 GetRequests, 215 SyntacticMatches, 14 SemanticMatches, 533 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8624 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6204occurred in iteration=16, InterpolantAutomatonStates: 355, 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, 0.4s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 436 NumberOfCodeBlocks, 436 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 550 ConstructedInterpolants, 0 QuantifiedInterpolants, 2322 SizeOfPredicates, 98 NumberOfNonLiveVariables, 1590 ConjunctsInSsa, 160 ConjunctsInUnsatCore, 36 InterpolantComputations, 6 PerfectInterpolantSequences, 0/816 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 proved your program to be incorrect! [2023-01-27 17:45:07,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...