/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-wmm/safe001_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 18:16:32,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 18:16:32,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 18:16:32,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 18:16:32,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 18:16:32,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 18:16:32,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 18:16:32,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 18:16:32,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 18:16:32,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 18:16:32,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 18:16:32,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 18:16:32,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 18:16:32,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 18:16:32,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 18:16:32,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 18:16:32,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 18:16:32,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 18:16:32,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 18:16:32,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 18:16:32,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 18:16:32,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 18:16:32,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 18:16:32,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 18:16:32,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 18:16:32,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 18:16:32,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 18:16:32,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 18:16:32,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 18:16:32,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 18:16:32,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 18:16:32,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 18:16:32,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 18:16:32,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 18:16:32,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 18:16:32,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 18:16:32,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 18:16:32,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 18:16:32,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 18:16:32,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 18:16:32,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 18:16:32,750 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 18:16:32,795 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 18:16:32,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 18:16:32,796 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 18:16:32,796 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 18:16:32,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 18:16:32,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 18:16:32,797 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 18:16:32,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 18:16:32,797 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 18:16:32,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 18:16:32,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 18:16:32,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 18:16:32,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 18:16:32,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 18:16:32,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 18:16:32,798 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 18:16:32,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 18:16:32,798 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 18:16:32,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 18:16:32,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 18:16:32,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 18:16:32,799 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 18:16:32,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 18:16:32,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:16:32,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 18:16:32,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 18:16:32,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 18:16:32,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 18:16:32,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 18:16:32,800 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 18:16:32,800 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 18:16:32,800 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 18:16:33,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 18:16:33,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 18:16:33,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 18:16:33,148 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 18:16:33,149 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 18:16:33,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.i [2023-01-27 18:16:34,855 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 18:16:35,121 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 18:16:35,122 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.i [2023-01-27 18:16:35,143 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a02fd8de4/22668db52eff48818af3f350e53e5f71/FLAGb070439a6 [2023-01-27 18:16:35,164 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a02fd8de4/22668db52eff48818af3f350e53e5f71 [2023-01-27 18:16:35,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 18:16:35,179 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 18:16:35,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 18:16:35,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 18:16:35,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 18:16:35,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:16:35" (1/1) ... [2023-01-27 18:16:35,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@602befa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:16:35, skipping insertion in model container [2023-01-27 18:16:35,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:16:35" (1/1) ... [2023-01-27 18:16:35,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 18:16:35,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 18:16:35,423 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-wmm/safe001_tso.i[945,958] [2023-01-27 18:16:35,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:16:35,549 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 18:16:35,559 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-wmm/safe001_tso.i[945,958] [2023-01-27 18:16:35,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:16:35,694 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:16:35,694 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:16:35,699 INFO L208 MainTranslator]: Completed translation [2023-01-27 18:16:35,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:16:35 WrapperNode [2023-01-27 18:16:35,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 18:16:35,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 18:16:35,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 18:16:35,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 18:16:35,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:16:35" (1/1) ... [2023-01-27 18:16:35,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:16:35" (1/1) ... [2023-01-27 18:16:35,753 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-01-27 18:16:35,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 18:16:35,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 18:16:35,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 18:16:35,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 18:16:35,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:16:35" (1/1) ... [2023-01-27 18:16:35,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:16:35" (1/1) ... [2023-01-27 18:16:35,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:16:35" (1/1) ... [2023-01-27 18:16:35,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:16:35" (1/1) ... [2023-01-27 18:16:35,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:16:35" (1/1) ... [2023-01-27 18:16:35,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:16:35" (1/1) ... [2023-01-27 18:16:35,783 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:16:35" (1/1) ... [2023-01-27 18:16:35,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:16:35" (1/1) ... [2023-01-27 18:16:35,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 18:16:35,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 18:16:35,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 18:16:35,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 18:16:35,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:16:35" (1/1) ... [2023-01-27 18:16:35,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:16:35,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:16:35,922 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 18:16:35,933 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 18:16:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 18:16:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 18:16:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 18:16:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 18:16:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 18:16:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-27 18:16:36,003 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-27 18:16:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-27 18:16:36,003 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-27 18:16:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-27 18:16:36,003 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-27 18:16:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 18:16:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 18:16:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 18:16:36,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 18:16:36,004 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 18:16:36,152 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 18:16:36,153 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 18:16:36,535 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 18:16:36,553 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 18:16:36,554 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 18:16:36,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:16:36 BoogieIcfgContainer [2023-01-27 18:16:36,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 18:16:36,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 18:16:36,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 18:16:36,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 18:16:36,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 06:16:35" (1/3) ... [2023-01-27 18:16:36,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a77fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:16:36, skipping insertion in model container [2023-01-27 18:16:36,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:16:35" (2/3) ... [2023-01-27 18:16:36,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a77fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:16:36, skipping insertion in model container [2023-01-27 18:16:36,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:16:36" (3/3) ... [2023-01-27 18:16:36,577 INFO L112 eAbstractionObserver]: Analyzing ICFG safe001_tso.i [2023-01-27 18:16:36,599 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 18:16:36,599 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 18:16:36,599 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 18:16:36,685 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-27 18:16:36,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-01-27 18:16:36,817 INFO L130 PetriNetUnfolder]: 2/81 cut-off events. [2023-01-27 18:16:36,817 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:16:36,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-01-27 18:16:36,821 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-01-27 18:16:36,824 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-01-27 18:16:36,835 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 18:16:36,842 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-27 18:16:36,844 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-27 18:16:36,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-01-27 18:16:36,863 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2023-01-27 18:16:36,863 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:16:36,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-01-27 18:16:36,934 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-01-27 18:16:43,162 INFO L134 LiptonReduction]: Checked pairs total: 1941 [2023-01-27 18:16:43,163 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-01-27 18:16:43,206 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 18:16:43,211 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;@67ce1d8e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 18:16:43,211 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 18:16:43,214 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-01-27 18:16:43,214 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:16:43,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:16:43,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:16:43,224 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:16:43,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:16:43,228 INFO L85 PathProgramCache]: Analyzing trace with hash -856354579, now seen corresponding path program 1 times [2023-01-27 18:16:43,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:16:43,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679598916] [2023-01-27 18:16:43,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:16:43,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:16:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:16:44,220 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 18:16:44,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:16:44,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679598916] [2023-01-27 18:16:44,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679598916] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:16:44,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:16:44,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 18:16:44,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646956768] [2023-01-27 18:16:44,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:16:44,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:16:44,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:16:44,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:16:44,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:16:44,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-27 18:16:44,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 18:16:44,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:16:44,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-27 18:16:44,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:16:44,587 INFO L130 PetriNetUnfolder]: 562/906 cut-off events. [2023-01-27 18:16:44,587 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-01-27 18:16:44,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1867 conditions, 906 events. 562/906 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3929 event pairs, 240 based on Foata normal form. 53/959 useless extension candidates. Maximal degree in co-relation 1856. Up to 478 conditions per place. [2023-01-27 18:16:44,619 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 24 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2023-01-27 18:16:44,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-01-27 18:16:44,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:16:44,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:16:44,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-01-27 18:16:44,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5587529976019184 [2023-01-27 18:16:44,653 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-01-27 18:16:44,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-01-27 18:16:44,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:16:44,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-01-27 18:16:44,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 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 18:16:44,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 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 18:16:44,668 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 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 18:16:44,682 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 233 transitions. [2023-01-27 18:16:44,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-01-27 18:16:44,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 18:16:44,723 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 94 flow [2023-01-27 18:16:44,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-01-27 18:16:44,733 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-01-27 18:16:44,733 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 94 flow [2023-01-27 18:16:44,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 18:16:44,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:16:44,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:16:44,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 18:16:44,734 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:16:44,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:16:44,735 INFO L85 PathProgramCache]: Analyzing trace with hash -777188759, now seen corresponding path program 1 times [2023-01-27 18:16:44,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:16:44,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135984518] [2023-01-27 18:16:44,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:16:44,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:16:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:16:45,123 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 18:16:45,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:16:45,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135984518] [2023-01-27 18:16:45,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135984518] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:16:45,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:16:45,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:16:45,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587639262] [2023-01-27 18:16:45,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:16:45,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:16:45,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:16:45,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:16:45,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:16:45,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-27 18:16:45,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 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 18:16:45,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:16:45,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-27 18:16:45,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:16:45,314 INFO L130 PetriNetUnfolder]: 534/863 cut-off events. [2023-01-27 18:16:45,314 INFO L131 PetriNetUnfolder]: For 335/335 co-relation queries the response was YES. [2023-01-27 18:16:45,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2483 conditions, 863 events. 534/863 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3789 event pairs, 69 based on Foata normal form. 6/869 useless extension candidates. Maximal degree in co-relation 2471. Up to 451 conditions per place. [2023-01-27 18:16:45,330 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-01-27 18:16:45,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 264 flow [2023-01-27 18:16:45,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:16:45,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:16:45,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 309 transitions. [2023-01-27 18:16:45,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5557553956834532 [2023-01-27 18:16:45,336 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 309 transitions. [2023-01-27 18:16:45,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 309 transitions. [2023-01-27 18:16:45,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:16:45,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 309 transitions. [2023-01-27 18:16:45,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 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 18:16:45,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 18:16:45,353 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 18:16:45,353 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 94 flow. Second operand 4 states and 309 transitions. [2023-01-27 18:16:45,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 264 flow [2023-01-27 18:16:45,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 45 transitions, 240 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:16:45,359 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 164 flow [2023-01-27 18:16:45,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2023-01-27 18:16:45,360 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-01-27 18:16:45,360 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 164 flow [2023-01-27 18:16:45,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 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 18:16:45,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:16:45,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:16:45,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 18:16:45,361 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:16:45,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:16:45,361 INFO L85 PathProgramCache]: Analyzing trace with hash -777188790, now seen corresponding path program 1 times [2023-01-27 18:16:45,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:16:45,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722310046] [2023-01-27 18:16:45,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:16:45,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:16:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:16:45,772 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 18:16:45,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:16:45,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722310046] [2023-01-27 18:16:45,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722310046] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:16:45,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:16:45,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:16:45,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099416053] [2023-01-27 18:16:45,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:16:45,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:16:45,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:16:45,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:16:45,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:16:45,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-27 18:16:45,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 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 18:16:45,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:16:45,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-27 18:16:45,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:16:45,934 INFO L130 PetriNetUnfolder]: 493/802 cut-off events. [2023-01-27 18:16:45,934 INFO L131 PetriNetUnfolder]: For 830/830 co-relation queries the response was YES. [2023-01-27 18:16:45,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2591 conditions, 802 events. 493/802 cut-off events. For 830/830 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3335 event pairs, 77 based on Foata normal form. 8/810 useless extension candidates. Maximal degree in co-relation 2576. Up to 347 conditions per place. [2023-01-27 18:16:45,939 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 40 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2023-01-27 18:16:45,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 53 transitions, 380 flow [2023-01-27 18:16:45,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:16:45,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:16:45,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 308 transitions. [2023-01-27 18:16:45,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5539568345323741 [2023-01-27 18:16:45,942 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 308 transitions. [2023-01-27 18:16:45,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 308 transitions. [2023-01-27 18:16:45,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:16:45,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 308 transitions. [2023-01-27 18:16:45,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 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 18:16:45,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 18:16:45,944 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 18:16:45,944 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 164 flow. Second operand 4 states and 308 transitions. [2023-01-27 18:16:45,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 53 transitions, 380 flow [2023-01-27 18:16:45,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 53 transitions, 380 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 18:16:45,973 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 296 flow [2023-01-27 18:16:45,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2023-01-27 18:16:45,974 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-01-27 18:16:45,976 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 296 flow [2023-01-27 18:16:45,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 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 18:16:45,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:16:45,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:16:45,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 18:16:45,977 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:16:45,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:16:45,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1314233776, now seen corresponding path program 1 times [2023-01-27 18:16:45,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:16:45,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803445006] [2023-01-27 18:16:45,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:16:45,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:16:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:16:46,167 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 18:16:46,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:16:46,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803445006] [2023-01-27 18:16:46,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803445006] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:16:46,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:16:46,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:16:46,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374638024] [2023-01-27 18:16:46,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:16:46,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:16:46,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:16:46,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:16:46,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:16:46,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-27 18:16:46,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 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 18:16:46,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:16:46,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-27 18:16:46,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:16:46,284 INFO L130 PetriNetUnfolder]: 508/839 cut-off events. [2023-01-27 18:16:46,284 INFO L131 PetriNetUnfolder]: For 1835/1835 co-relation queries the response was YES. [2023-01-27 18:16:46,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3108 conditions, 839 events. 508/839 cut-off events. For 1835/1835 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3664 event pairs, 72 based on Foata normal form. 8/847 useless extension candidates. Maximal degree in co-relation 3088. Up to 342 conditions per place. [2023-01-27 18:16:46,288 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 36 selfloop transitions, 20 changer transitions 0/56 dead transitions. [2023-01-27 18:16:46,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 56 transitions, 464 flow [2023-01-27 18:16:46,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:16:46,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:16:46,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 310 transitions. [2023-01-27 18:16:46,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575539568345323 [2023-01-27 18:16:46,313 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 310 transitions. [2023-01-27 18:16:46,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 310 transitions. [2023-01-27 18:16:46,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:16:46,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 310 transitions. [2023-01-27 18:16:46,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 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 18:16:46,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 18:16:46,315 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 18:16:46,315 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 296 flow. Second operand 4 states and 310 transitions. [2023-01-27 18:16:46,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 56 transitions, 464 flow [2023-01-27 18:16:46,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 56 transitions, 464 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 18:16:46,337 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 376 flow [2023-01-27 18:16:46,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=376, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-01-27 18:16:46,338 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-01-27 18:16:46,338 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 376 flow [2023-01-27 18:16:46,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 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 18:16:46,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:16:46,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:16:46,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 18:16:46,339 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:16:46,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:16:46,339 INFO L85 PathProgramCache]: Analyzing trace with hash 445206083, now seen corresponding path program 1 times [2023-01-27 18:16:46,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:16:46,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466374070] [2023-01-27 18:16:46,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:16:46,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:16:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:16:46,651 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 18:16:46,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:16:46,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466374070] [2023-01-27 18:16:46,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466374070] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:16:46,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:16:46,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:16:46,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883557425] [2023-01-27 18:16:46,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:16:46,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:16:46,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:16:46,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:16:46,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:16:46,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-27 18:16:46,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 376 flow. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 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 18:16:46,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:16:46,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-27 18:16:46,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:16:46,899 INFO L130 PetriNetUnfolder]: 554/917 cut-off events. [2023-01-27 18:16:46,899 INFO L131 PetriNetUnfolder]: For 3324/3324 co-relation queries the response was YES. [2023-01-27 18:16:46,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3682 conditions, 917 events. 554/917 cut-off events. For 3324/3324 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4003 event pairs, 136 based on Foata normal form. 28/945 useless extension candidates. Maximal degree in co-relation 3658. Up to 528 conditions per place. [2023-01-27 18:16:46,919 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 34 selfloop transitions, 9 changer transitions 20/63 dead transitions. [2023-01-27 18:16:46,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 627 flow [2023-01-27 18:16:46,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:16:46,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:16:46,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 377 transitions. [2023-01-27 18:16:46,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5424460431654676 [2023-01-27 18:16:46,942 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 377 transitions. [2023-01-27 18:16:46,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 377 transitions. [2023-01-27 18:16:46,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:16:46,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 377 transitions. [2023-01-27 18:16:46,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 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 18:16:46,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 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 18:16:46,945 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 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 18:16:46,945 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 376 flow. Second operand 5 states and 377 transitions. [2023-01-27 18:16:46,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 627 flow [2023-01-27 18:16:46,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 63 transitions, 623 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-01-27 18:16:46,958 INFO L231 Difference]: Finished difference. Result has 50 places, 30 transitions, 299 flow [2023-01-27 18:16:46,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=299, PETRI_PLACES=50, PETRI_TRANSITIONS=30} [2023-01-27 18:16:46,960 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-01-27 18:16:46,960 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 30 transitions, 299 flow [2023-01-27 18:16:46,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 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 18:16:46,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:16:46,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:16:46,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 18:16:46,960 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:16:46,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:16:46,961 INFO L85 PathProgramCache]: Analyzing trace with hash 405618661, now seen corresponding path program 1 times [2023-01-27 18:16:46,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:16:46,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994079457] [2023-01-27 18:16:46,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:16:46,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:16:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:16:47,286 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 18:16:47,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:16:47,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994079457] [2023-01-27 18:16:47,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994079457] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:16:47,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:16:47,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:16:47,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977152067] [2023-01-27 18:16:47,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:16:47,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:16:47,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:16:47,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:16:47,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:16:47,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-27 18:16:47,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 30 transitions, 299 flow. Second operand has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 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 18:16:47,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:16:47,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-27 18:16:47,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:16:47,490 INFO L130 PetriNetUnfolder]: 243/420 cut-off events. [2023-01-27 18:16:47,490 INFO L131 PetriNetUnfolder]: For 1718/1718 co-relation queries the response was YES. [2023-01-27 18:16:47,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1827 conditions, 420 events. 243/420 cut-off events. For 1718/1718 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1496 event pairs, 57 based on Foata normal form. 4/424 useless extension candidates. Maximal degree in co-relation 1798. Up to 206 conditions per place. [2023-01-27 18:16:47,494 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 34 selfloop transitions, 14 changer transitions 0/48 dead transitions. [2023-01-27 18:16:47,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 48 transitions, 480 flow [2023-01-27 18:16:47,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:16:47,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:16:47,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 310 transitions. [2023-01-27 18:16:47,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575539568345323 [2023-01-27 18:16:47,529 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 310 transitions. [2023-01-27 18:16:47,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 310 transitions. [2023-01-27 18:16:47,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:16:47,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 310 transitions. [2023-01-27 18:16:47,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 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 18:16:47,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 18:16:47,531 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 18:16:47,531 INFO L175 Difference]: Start difference. First operand has 50 places, 30 transitions, 299 flow. Second operand 4 states and 310 transitions. [2023-01-27 18:16:47,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 48 transitions, 480 flow [2023-01-27 18:16:47,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 426 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-01-27 18:16:47,558 INFO L231 Difference]: Finished difference. Result has 50 places, 32 transitions, 347 flow [2023-01-27 18:16:47,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=347, PETRI_PLACES=50, PETRI_TRANSITIONS=32} [2023-01-27 18:16:47,559 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-01-27 18:16:47,559 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 32 transitions, 347 flow [2023-01-27 18:16:47,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 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 18:16:47,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:16:47,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:16:47,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 18:16:47,560 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:16:47,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:16:47,560 INFO L85 PathProgramCache]: Analyzing trace with hash -995434081, now seen corresponding path program 1 times [2023-01-27 18:16:47,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:16:47,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118517476] [2023-01-27 18:16:47,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:16:47,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:16:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:16:47,806 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 18:16:47,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:16:47,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118517476] [2023-01-27 18:16:47,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118517476] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:16:47,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:16:47,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:16:47,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117654013] [2023-01-27 18:16:47,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:16:47,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:16:47,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:16:47,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:16:47,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:16:47,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-27 18:16:47,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 32 transitions, 347 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 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 18:16:47,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:16:47,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-27 18:16:47,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:16:48,108 INFO L130 PetriNetUnfolder]: 273/504 cut-off events. [2023-01-27 18:16:48,108 INFO L131 PetriNetUnfolder]: For 2127/2132 co-relation queries the response was YES. [2023-01-27 18:16:48,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2113 conditions, 504 events. 273/504 cut-off events. For 2127/2132 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2134 event pairs, 85 based on Foata normal form. 16/513 useless extension candidates. Maximal degree in co-relation 2084. Up to 200 conditions per place. [2023-01-27 18:16:48,111 INFO L137 encePairwiseOnDemand]: 135/139 looper letters, 25 selfloop transitions, 5 changer transitions 11/45 dead transitions. [2023-01-27 18:16:48,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 485 flow [2023-01-27 18:16:48,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:16:48,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:16:48,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 314 transitions. [2023-01-27 18:16:48,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564748201438849 [2023-01-27 18:16:48,112 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 314 transitions. [2023-01-27 18:16:48,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 314 transitions. [2023-01-27 18:16:48,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:16:48,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 314 transitions. [2023-01-27 18:16:48,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 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 18:16:48,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 18:16:48,114 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 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 18:16:48,114 INFO L175 Difference]: Start difference. First operand has 50 places, 32 transitions, 347 flow. Second operand 4 states and 314 transitions. [2023-01-27 18:16:48,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 485 flow [2023-01-27 18:16:48,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 465 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:16:48,119 INFO L231 Difference]: Finished difference. Result has 52 places, 25 transitions, 261 flow [2023-01-27 18:16:48,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=52, PETRI_TRANSITIONS=25} [2023-01-27 18:16:48,120 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 25 predicate places. [2023-01-27 18:16:48,120 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 25 transitions, 261 flow [2023-01-27 18:16:48,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 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 18:16:48,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:16:48,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:16:48,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 18:16:48,122 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:16:48,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:16:48,122 INFO L85 PathProgramCache]: Analyzing trace with hash -258315683, now seen corresponding path program 2 times [2023-01-27 18:16:48,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:16:48,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822853010] [2023-01-27 18:16:48,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:16:48,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:16:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:16:48,402 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 18:16:48,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:16:48,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822853010] [2023-01-27 18:16:48,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822853010] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:16:48,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:16:48,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 18:16:48,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375226848] [2023-01-27 18:16:48,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:16:48,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:16:48,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:16:48,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:16:48,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:16:48,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-27 18:16:48,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 25 transitions, 261 flow. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 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 18:16:48,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:16:48,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-27 18:16:48,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:16:48,481 INFO L130 PetriNetUnfolder]: 187/334 cut-off events. [2023-01-27 18:16:48,481 INFO L131 PetriNetUnfolder]: For 1358/1358 co-relation queries the response was YES. [2023-01-27 18:16:48,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 334 events. 187/334 cut-off events. For 1358/1358 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1205 event pairs, 28 based on Foata normal form. 12/346 useless extension candidates. Maximal degree in co-relation 1398. Up to 100 conditions per place. [2023-01-27 18:16:48,506 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 21 selfloop transitions, 5 changer transitions 19/45 dead transitions. [2023-01-27 18:16:48,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 45 transitions, 420 flow [2023-01-27 18:16:48,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 18:16:48,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 18:16:48,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 443 transitions. [2023-01-27 18:16:48,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311750599520384 [2023-01-27 18:16:48,508 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 443 transitions. [2023-01-27 18:16:48,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 443 transitions. [2023-01-27 18:16:48,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:16:48,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 443 transitions. [2023-01-27 18:16:48,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 73.83333333333333) internal successors, (443), 6 states have internal predecessors, (443), 0 states have call successors, (0), 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 18:16:48,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 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 18:16:48,510 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 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 18:16:48,510 INFO L175 Difference]: Start difference. First operand has 52 places, 25 transitions, 261 flow. Second operand 6 states and 443 transitions. [2023-01-27 18:16:48,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 45 transitions, 420 flow [2023-01-27 18:16:48,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 338 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-01-27 18:16:48,526 INFO L231 Difference]: Finished difference. Result has 46 places, 17 transitions, 112 flow [2023-01-27 18:16:48,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=112, PETRI_PLACES=46, PETRI_TRANSITIONS=17} [2023-01-27 18:16:48,527 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-01-27 18:16:48,527 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 17 transitions, 112 flow [2023-01-27 18:16:48,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 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 18:16:48,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:16:48,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:16:48,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 18:16:48,527 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:16:48,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:16:48,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1061372941, now seen corresponding path program 3 times [2023-01-27 18:16:48,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:16:48,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196263537] [2023-01-27 18:16:48,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:16:48,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:16:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:16:48,908 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 18:16:48,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:16:48,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196263537] [2023-01-27 18:16:48,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196263537] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:16:48,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:16:48,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:16:48,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106372643] [2023-01-27 18:16:48,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:16:48,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:16:48,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:16:48,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:16:48,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:16:48,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-27 18:16:48,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 17 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 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 18:16:48,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:16:48,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-27 18:16:48,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:16:49,186 INFO L130 PetriNetUnfolder]: 46/113 cut-off events. [2023-01-27 18:16:49,187 INFO L131 PetriNetUnfolder]: For 241/243 co-relation queries the response was YES. [2023-01-27 18:16:49,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 113 events. 46/113 cut-off events. For 241/243 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 357 event pairs, 16 based on Foata normal form. 6/115 useless extension candidates. Maximal degree in co-relation 366. Up to 62 conditions per place. [2023-01-27 18:16:49,187 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 17 selfloop transitions, 3 changer transitions 13/36 dead transitions. [2023-01-27 18:16:49,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 36 transitions, 252 flow [2023-01-27 18:16:49,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:16:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:16:49,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2023-01-27 18:16:49,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611510791366906 [2023-01-27 18:16:49,188 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 390 transitions. [2023-01-27 18:16:49,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 390 transitions. [2023-01-27 18:16:49,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:16:49,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 390 transitions. [2023-01-27 18:16:49,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 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 18:16:49,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 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 18:16:49,190 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 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 18:16:49,190 INFO L175 Difference]: Start difference. First operand has 46 places, 17 transitions, 112 flow. Second operand 5 states and 390 transitions. [2023-01-27 18:16:49,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 36 transitions, 252 flow [2023-01-27 18:16:49,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 175 flow, removed 7 selfloop flow, removed 16 redundant places. [2023-01-27 18:16:49,192 INFO L231 Difference]: Finished difference. Result has 35 places, 19 transitions, 87 flow [2023-01-27 18:16:49,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=87, PETRI_PLACES=35, PETRI_TRANSITIONS=19} [2023-01-27 18:16:49,213 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2023-01-27 18:16:49,213 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 19 transitions, 87 flow [2023-01-27 18:16:49,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 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 18:16:49,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:16:49,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:16:49,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 18:16:49,214 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:16:49,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:16:49,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1810660225, now seen corresponding path program 1 times [2023-01-27 18:16:49,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:16:49,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716152685] [2023-01-27 18:16:49,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:16:49,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:16:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:16:49,540 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 18:16:49,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:16:49,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716152685] [2023-01-27 18:16:49,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716152685] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:16:49,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:16:49,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:16:49,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253472076] [2023-01-27 18:16:49,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:16:49,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:16:49,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:16:49,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:16:49,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:16:49,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-27 18:16:49,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 19 transitions, 87 flow. Second operand has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 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 18:16:49,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:16:49,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-27 18:16:49,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:16:49,622 INFO L130 PetriNetUnfolder]: 24/68 cut-off events. [2023-01-27 18:16:49,622 INFO L131 PetriNetUnfolder]: For 65/72 co-relation queries the response was YES. [2023-01-27 18:16:49,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 68 events. 24/68 cut-off events. For 65/72 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 170 event pairs, 3 based on Foata normal form. 7/73 useless extension candidates. Maximal degree in co-relation 232. Up to 40 conditions per place. [2023-01-27 18:16:49,622 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 16 selfloop transitions, 5 changer transitions 13/37 dead transitions. [2023-01-27 18:16:49,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 37 transitions, 245 flow [2023-01-27 18:16:49,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 18:16:49,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 18:16:49,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 462 transitions. [2023-01-27 18:16:49,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5539568345323741 [2023-01-27 18:16:49,625 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 462 transitions. [2023-01-27 18:16:49,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 462 transitions. [2023-01-27 18:16:49,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:16:49,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 462 transitions. [2023-01-27 18:16:49,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 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 18:16:49,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 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 18:16:49,628 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 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 18:16:49,628 INFO L175 Difference]: Start difference. First operand has 35 places, 19 transitions, 87 flow. Second operand 6 states and 462 transitions. [2023-01-27 18:16:49,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 37 transitions, 245 flow [2023-01-27 18:16:49,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 37 transitions, 240 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 18:16:49,629 INFO L231 Difference]: Finished difference. Result has 39 places, 19 transitions, 106 flow [2023-01-27 18:16:49,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=106, PETRI_PLACES=39, PETRI_TRANSITIONS=19} [2023-01-27 18:16:49,630 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2023-01-27 18:16:49,630 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 19 transitions, 106 flow [2023-01-27 18:16:49,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 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 18:16:49,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:16:49,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:16:49,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 18:16:49,631 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:16:49,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:16:49,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1948075786, now seen corresponding path program 1 times [2023-01-27 18:16:49,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:16:49,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600310181] [2023-01-27 18:16:49,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:16:49,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:16:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:16:49,817 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 18:16:49,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:16:49,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600310181] [2023-01-27 18:16:49,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600310181] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:16:49,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:16:49,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 18:16:49,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921312242] [2023-01-27 18:16:49,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:16:49,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 18:16:49,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:16:49,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 18:16:49,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-27 18:16:49,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-27 18:16:49,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 19 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 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 18:16:49,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:16:49,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-27 18:16:49,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:16:50,040 INFO L130 PetriNetUnfolder]: 11/41 cut-off events. [2023-01-27 18:16:50,040 INFO L131 PetriNetUnfolder]: For 93/101 co-relation queries the response was YES. [2023-01-27 18:16:50,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 41 events. 11/41 cut-off events. For 93/101 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 66 event pairs, 2 based on Foata normal form. 5/45 useless extension candidates. Maximal degree in co-relation 151. Up to 17 conditions per place. [2023-01-27 18:16:50,040 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-01-27 18:16:50,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 26 transitions, 180 flow [2023-01-27 18:16:50,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 18:16:50,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 18:16:50,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 521 transitions. [2023-01-27 18:16:50,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5354573484069887 [2023-01-27 18:16:50,042 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 521 transitions. [2023-01-27 18:16:50,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 521 transitions. [2023-01-27 18:16:50,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:16:50,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 521 transitions. [2023-01-27 18:16:50,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.42857142857143) internal successors, (521), 7 states have internal predecessors, (521), 0 states have call successors, (0), 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 18:16:50,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 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 18:16:50,044 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 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 18:16:50,044 INFO L175 Difference]: Start difference. First operand has 39 places, 19 transitions, 106 flow. Second operand 7 states and 521 transitions. [2023-01-27 18:16:50,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 26 transitions, 180 flow [2023-01-27 18:16:50,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 26 transitions, 153 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-01-27 18:16:50,045 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-01-27 18:16:50,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-01-27 18:16:50,046 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-01-27 18:16:50,046 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-01-27 18:16:50,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 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 18:16:50,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 18:16:50,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 18:16:50,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 18:16:50,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 18:16:50,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 18:16:50,082 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:16:50,084 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 18:16:50,084 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 18:16:50,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 06:16:50 BasicIcfg [2023-01-27 18:16:50,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 18:16:50,119 INFO L158 Benchmark]: Toolchain (without parser) took 14940.66ms. Allocated memory is still 669.0MB. Free memory was 619.4MB in the beginning and 497.2MB in the end (delta: 122.2MB). Peak memory consumption was 124.1MB. Max. memory is 16.0GB. [2023-01-27 18:16:50,119 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 402.7MB. Free memory was 351.6MB in the beginning and 351.5MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 18:16:50,120 INFO L158 Benchmark]: CACSL2BoogieTranslator took 520.01ms. Allocated memory is still 669.0MB. Free memory was 619.0MB in the beginning and 598.9MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-27 18:16:50,120 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.99ms. Allocated memory is still 669.0MB. Free memory was 598.9MB in the beginning and 596.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 18:16:50,124 INFO L158 Benchmark]: Boogie Preprocessor took 31.32ms. Allocated memory is still 669.0MB. Free memory was 596.8MB in the beginning and 595.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 18:16:50,124 INFO L158 Benchmark]: RCFGBuilder took 770.39ms. Allocated memory is still 669.0MB. Free memory was 595.5MB in the beginning and 581.7MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-27 18:16:50,124 INFO L158 Benchmark]: TraceAbstraction took 13561.28ms. Allocated memory is still 669.0MB. Free memory was 580.9MB in the beginning and 497.2MB in the end (delta: 83.7MB). Peak memory consumption was 86.3MB. Max. memory is 16.0GB. [2023-01-27 18:16:50,125 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 402.7MB. Free memory was 351.6MB in the beginning and 351.5MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 520.01ms. Allocated memory is still 669.0MB. Free memory was 619.0MB in the beginning and 598.9MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.99ms. Allocated memory is still 669.0MB. Free memory was 598.9MB in the beginning and 596.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.32ms. Allocated memory is still 669.0MB. Free memory was 596.8MB in the beginning and 595.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 770.39ms. Allocated memory is still 669.0MB. Free memory was 595.5MB in the beginning and 581.7MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 13561.28ms. Allocated memory is still 669.0MB. Free memory was 580.9MB in the beginning and 497.2MB in the end (delta: 83.7MB). Peak memory consumption was 86.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.3s, 78 PlacesBefore, 27 PlacesAfterwards, 69 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1941 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1183, independent: 1105, independent conditional: 0, independent unconditional: 1105, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 572, independent: 554, independent conditional: 0, independent unconditional: 554, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1183, independent: 551, independent conditional: 0, independent unconditional: 551, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 572, unknown conditional: 0, unknown unconditional: 572] , Statistics on independence cache: Total cache size (in pairs): 49, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 13.3s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 177 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 177 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 490 IncrementalHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 31 mSDtfsCounter, 490 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=376occurred in iteration=4, InterpolantAutomatonStates: 52, 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: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 501 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 18:16:50,142 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...