/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-NoLbe-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 04:59:01,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 04:59:01,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 04:59:01,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 04:59:01,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 04:59:01,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 04:59:01,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 04:59:01,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 04:59:01,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 04:59:01,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 04:59:01,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 04:59:01,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 04:59:01,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 04:59:01,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 04:59:01,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 04:59:01,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 04:59:01,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 04:59:01,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 04:59:01,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 04:59:01,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 04:59:01,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 04:59:01,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 04:59:01,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 04:59:01,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 04:59:01,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 04:59:01,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 04:59:01,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 04:59:01,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 04:59:01,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 04:59:01,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-19 04:59:01,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 04:59:01,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 04:59:01,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 04:59:01,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-Before.epf [2022-01-19 04:59:01,440 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 04:59:01,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 04:59:01,441 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 04:59:01,441 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 04:59:01,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 04:59:01,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 04:59:01,442 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 04:59:01,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 04:59:01,442 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 04:59:01,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 04:59:01,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 04:59:01,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 04:59:01,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 04:59:01,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 04:59:01,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 04:59:01,443 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 04:59:01,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 04:59:01,444 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 04:59:01,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 04:59:01,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 04:59:01,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 04:59:01,444 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 04:59:01,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 04:59:01,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 04:59:01,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 04:59:01,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 04:59:01,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 04:59:01,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 04:59:01,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 04:59:01,445 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 04:59:01,446 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 04:59:01,446 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 04:59:01,446 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 04:59:01,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 04:59:01,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 04:59:01,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 04:59:01,715 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 04:59:01,716 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 04:59:01,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-19 04:59:01,778 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78a10e1a5/ea951e28e1814ac8b74ffd484107dc0b/FLAG64d0df57e [2022-01-19 04:59:02,269 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 04:59:02,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-19 04:59:02,290 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78a10e1a5/ea951e28e1814ac8b74ffd484107dc0b/FLAG64d0df57e [2022-01-19 04:59:02,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78a10e1a5/ea951e28e1814ac8b74ffd484107dc0b [2022-01-19 04:59:02,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 04:59:02,757 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 04:59:02,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 04:59:02,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 04:59:02,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 04:59:02,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 04:59:02" (1/1) ... [2022-01-19 04:59:02,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1760be00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:59:02, skipping insertion in model container [2022-01-19 04:59:02,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 04:59:02" (1/1) ... [2022-01-19 04:59:02,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 04:59:02,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 04:59:02,985 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-01-19 04:59:03,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 04:59:03,093 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 04:59:03,103 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-01-19 04:59:03,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 04:59:03,154 INFO L208 MainTranslator]: Completed translation [2022-01-19 04:59:03,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:59:03 WrapperNode [2022-01-19 04:59:03,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 04:59:03,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 04:59:03,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 04:59:03,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 04:59:03,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:59:03" (1/1) ... [2022-01-19 04:59:03,188 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:59:03" (1/1) ... [2022-01-19 04:59:03,211 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-01-19 04:59:03,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 04:59:03,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 04:59:03,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 04:59:03,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 04:59:03,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:59:03" (1/1) ... [2022-01-19 04:59:03,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:59:03" (1/1) ... [2022-01-19 04:59:03,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:59:03" (1/1) ... [2022-01-19 04:59:03,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:59:03" (1/1) ... [2022-01-19 04:59:03,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:59:03" (1/1) ... [2022-01-19 04:59:03,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:59:03" (1/1) ... [2022-01-19 04:59:03,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:59:03" (1/1) ... [2022-01-19 04:59:03,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 04:59:03,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 04:59:03,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 04:59:03,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 04:59:03,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:59:03" (1/1) ... [2022-01-19 04:59:03,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 04:59:03,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 04:59:03,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-19 04:59:03,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-19 04:59:03,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 04:59:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 04:59:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 04:59:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 04:59:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 04:59:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-19 04:59:03,315 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-19 04:59:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-19 04:59:03,315 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-19 04:59:03,316 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-19 04:59:03,319 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-19 04:59:03,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 04:59:03,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 04:59:03,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 04:59:03,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 04:59:03,322 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 04:59:03,471 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 04:59:03,472 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 04:59:03,653 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 04:59:03,659 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 04:59:03,659 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 04:59:03,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 04:59:03 BoogieIcfgContainer [2022-01-19 04:59:03,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 04:59:03,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 04:59:03,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 04:59:03,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 04:59:03,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 04:59:02" (1/3) ... [2022-01-19 04:59:03,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6904a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 04:59:03, skipping insertion in model container [2022-01-19 04:59:03,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:59:03" (2/3) ... [2022-01-19 04:59:03,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6904a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 04:59:03, skipping insertion in model container [2022-01-19 04:59:03,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 04:59:03" (3/3) ... [2022-01-19 04:59:03,672 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-19 04:59:03,677 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 04:59:03,677 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 04:59:03,678 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 04:59:03,733 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,733 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,733 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,733 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,734 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,734 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,734 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,734 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,735 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,735 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,736 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,737 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,739 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,740 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,740 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,740 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,740 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,740 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,741 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,741 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,741 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,742 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,742 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,742 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,743 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,743 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,743 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,743 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,745 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,745 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,745 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,746 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,748 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,748 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,748 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,748 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,755 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,755 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,756 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,756 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,759 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,759 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,759 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,759 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,761 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,762 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,762 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,763 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:59:03,765 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 04:59:03,817 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 04:59:03,830 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 04:59:03,830 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 04:59:03,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-01-19 04:59:03,901 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2022-01-19 04:59:03,901 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 04:59:03,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-01-19 04:59:03,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-01-19 04:59:03,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-01-19 04:59:03,940 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2022-01-19 04:59:03,940 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 04:59:03,940 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:59:03,941 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:59:03,942 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:59:03,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:59:03,946 INFO L85 PathProgramCache]: Analyzing trace with hash -669003802, now seen corresponding path program 1 times [2022-01-19 04:59:03,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:59:03,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270867815] [2022-01-19 04:59:03,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:59:03,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:59:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:59:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:59:04,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:59:04,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270867815] [2022-01-19 04:59:04,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270867815] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:59:04,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:59:04,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 04:59:04,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289084803] [2022-01-19 04:59:04,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:59:04,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 04:59:04,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:59:04,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 04:59:04,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 04:59:04,532 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-01-19 04:59:04,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:04,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:59:04,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-01-19 04:59:04,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:59:04,912 INFO L129 PetriNetUnfolder]: 369/1027 cut-off events. [2022-01-19 04:59:04,913 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-01-19 04:59:04,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1690 conditions, 1027 events. 369/1027 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6678 event pairs, 60 based on Foata normal form. 31/1027 useless extension candidates. Maximal degree in co-relation 1652. Up to 229 conditions per place. [2022-01-19 04:59:04,923 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 21 selfloop transitions, 8 changer transitions 37/122 dead transitions. [2022-01-19 04:59:04,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 122 transitions, 391 flow [2022-01-19 04:59:04,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 04:59:04,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 04:59:04,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 700 transitions. [2022-01-19 04:59:04,939 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8454106280193237 [2022-01-19 04:59:04,939 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 700 transitions. [2022-01-19 04:59:04,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 700 transitions. [2022-01-19 04:59:04,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:59:04,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 700 transitions. [2022-01-19 04:59:04,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.77777777777777) internal successors, (700), 9 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:04,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:04,956 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:04,958 INFO L186 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 9 states and 700 transitions. [2022-01-19 04:59:04,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 122 transitions, 391 flow [2022-01-19 04:59:04,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 122 transitions, 386 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 04:59:04,964 INFO L242 Difference]: Finished difference. Result has 97 places, 79 transitions, 250 flow [2022-01-19 04:59:04,967 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=250, PETRI_PLACES=97, PETRI_TRANSITIONS=79} [2022-01-19 04:59:04,970 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 13 predicate places. [2022-01-19 04:59:04,970 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 79 transitions, 250 flow [2022-01-19 04:59:04,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:04,971 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:59:04,971 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:59:04,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 04:59:04,972 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:59:04,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:59:04,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1081069657, now seen corresponding path program 1 times [2022-01-19 04:59:04,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:59:04,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173138747] [2022-01-19 04:59:04,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:59:04,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:59:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:59:05,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:59:05,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:59:05,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173138747] [2022-01-19 04:59:05,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173138747] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:59:05,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:59:05,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 04:59:05,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534025110] [2022-01-19 04:59:05,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:59:05,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 04:59:05,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:59:05,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 04:59:05,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 04:59:05,133 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-01-19 04:59:05,134 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 79 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:05,134 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:59:05,134 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-01-19 04:59:05,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:59:05,484 INFO L129 PetriNetUnfolder]: 229/678 cut-off events. [2022-01-19 04:59:05,484 INFO L130 PetriNetUnfolder]: For 1220/1556 co-relation queries the response was YES. [2022-01-19 04:59:05,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2109 conditions, 678 events. 229/678 cut-off events. For 1220/1556 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3819 event pairs, 14 based on Foata normal form. 21/674 useless extension candidates. Maximal degree in co-relation 2060. Up to 174 conditions per place. [2022-01-19 04:59:05,492 INFO L132 encePairwiseOnDemand]: 80/92 looper letters, 26 selfloop transitions, 9 changer transitions 58/149 dead transitions. [2022-01-19 04:59:05,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 149 transitions, 962 flow [2022-01-19 04:59:05,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 04:59:05,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 04:59:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 989 transitions. [2022-01-19 04:59:05,496 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8269230769230769 [2022-01-19 04:59:05,496 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 989 transitions. [2022-01-19 04:59:05,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 989 transitions. [2022-01-19 04:59:05,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:59:05,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 989 transitions. [2022-01-19 04:59:05,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.07692307692308) internal successors, (989), 13 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:05,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:05,505 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:05,506 INFO L186 Difference]: Start difference. First operand has 97 places, 79 transitions, 250 flow. Second operand 13 states and 989 transitions. [2022-01-19 04:59:05,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 149 transitions, 962 flow [2022-01-19 04:59:05,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 149 transitions, 896 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 04:59:05,521 INFO L242 Difference]: Finished difference. Result has 113 places, 83 transitions, 332 flow [2022-01-19 04:59:05,521 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=332, PETRI_PLACES=113, PETRI_TRANSITIONS=83} [2022-01-19 04:59:05,522 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 29 predicate places. [2022-01-19 04:59:05,522 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 83 transitions, 332 flow [2022-01-19 04:59:05,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:05,523 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:59:05,523 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:59:05,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 04:59:05,523 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:59:05,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:59:05,524 INFO L85 PathProgramCache]: Analyzing trace with hash 903878887, now seen corresponding path program 1 times [2022-01-19 04:59:05,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:59:05,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544974274] [2022-01-19 04:59:05,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:59:05,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:59:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:59:05,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:59:05,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:59:05,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544974274] [2022-01-19 04:59:05,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544974274] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:59:05,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:59:05,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 04:59:05,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999681569] [2022-01-19 04:59:05,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:59:05,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 04:59:05,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:59:05,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 04:59:05,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 04:59:05,688 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-01-19 04:59:05,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 83 transitions, 332 flow. Second operand has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:05,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:59:05,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-01-19 04:59:05,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:59:05,949 INFO L129 PetriNetUnfolder]: 124/470 cut-off events. [2022-01-19 04:59:05,949 INFO L130 PetriNetUnfolder]: For 1677/1836 co-relation queries the response was YES. [2022-01-19 04:59:05,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1624 conditions, 470 events. 124/470 cut-off events. For 1677/1836 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2333 event pairs, 4 based on Foata normal form. 16/467 useless extension candidates. Maximal degree in co-relation 1561. Up to 105 conditions per place. [2022-01-19 04:59:05,954 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 25 selfloop transitions, 14 changer transitions 40/135 dead transitions. [2022-01-19 04:59:05,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 135 transitions, 948 flow [2022-01-19 04:59:05,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 04:59:05,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 04:59:05,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 981 transitions. [2022-01-19 04:59:05,958 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8202341137123745 [2022-01-19 04:59:05,958 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 981 transitions. [2022-01-19 04:59:05,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 981 transitions. [2022-01-19 04:59:05,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:59:05,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 981 transitions. [2022-01-19 04:59:05,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.46153846153847) internal successors, (981), 13 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:05,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:05,965 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:05,965 INFO L186 Difference]: Start difference. First operand has 113 places, 83 transitions, 332 flow. Second operand 13 states and 981 transitions. [2022-01-19 04:59:05,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 135 transitions, 948 flow [2022-01-19 04:59:05,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 135 transitions, 863 flow, removed 40 selfloop flow, removed 4 redundant places. [2022-01-19 04:59:05,976 INFO L242 Difference]: Finished difference. Result has 124 places, 87 transitions, 432 flow [2022-01-19 04:59:05,976 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=432, PETRI_PLACES=124, PETRI_TRANSITIONS=87} [2022-01-19 04:59:05,978 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 40 predicate places. [2022-01-19 04:59:05,978 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 87 transitions, 432 flow [2022-01-19 04:59:05,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:05,978 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:59:05,978 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:59:05,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 04:59:05,979 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:59:05,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:59:05,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1372582202, now seen corresponding path program 1 times [2022-01-19 04:59:05,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:59:05,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198243010] [2022-01-19 04:59:05,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:59:05,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:59:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:59:06,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:59:06,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:59:06,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198243010] [2022-01-19 04:59:06,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198243010] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:59:06,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:59:06,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 04:59:06,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50353482] [2022-01-19 04:59:06,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:59:06,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 04:59:06,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:59:06,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 04:59:06,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 04:59:06,134 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-01-19 04:59:06,134 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 87 transitions, 432 flow. Second operand has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:06,134 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:59:06,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-01-19 04:59:06,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:59:06,392 INFO L129 PetriNetUnfolder]: 71/371 cut-off events. [2022-01-19 04:59:06,392 INFO L130 PetriNetUnfolder]: For 1397/1632 co-relation queries the response was YES. [2022-01-19 04:59:06,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 371 events. 71/371 cut-off events. For 1397/1632 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1780 event pairs, 3 based on Foata normal form. 16/375 useless extension candidates. Maximal degree in co-relation 1186. Up to 73 conditions per place. [2022-01-19 04:59:06,396 INFO L132 encePairwiseOnDemand]: 80/92 looper letters, 27 selfloop transitions, 16 changer transitions 28/127 dead transitions. [2022-01-19 04:59:06,396 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 127 transitions, 970 flow [2022-01-19 04:59:06,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 04:59:06,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 04:59:06,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 969 transitions. [2022-01-19 04:59:06,399 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.810200668896321 [2022-01-19 04:59:06,399 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 969 transitions. [2022-01-19 04:59:06,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 969 transitions. [2022-01-19 04:59:06,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:59:06,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 969 transitions. [2022-01-19 04:59:06,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.53846153846153) internal successors, (969), 13 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:06,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:06,405 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:06,405 INFO L186 Difference]: Start difference. First operand has 124 places, 87 transitions, 432 flow. Second operand 13 states and 969 transitions. [2022-01-19 04:59:06,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 127 transitions, 970 flow [2022-01-19 04:59:06,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 127 transitions, 836 flow, removed 65 selfloop flow, removed 13 redundant places. [2022-01-19 04:59:06,416 INFO L242 Difference]: Finished difference. Result has 126 places, 90 transitions, 505 flow [2022-01-19 04:59:06,417 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=505, PETRI_PLACES=126, PETRI_TRANSITIONS=90} [2022-01-19 04:59:06,418 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 42 predicate places. [2022-01-19 04:59:06,418 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 90 transitions, 505 flow [2022-01-19 04:59:06,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:06,418 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:59:06,419 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:59:06,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 04:59:06,419 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:59:06,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:59:06,421 INFO L85 PathProgramCache]: Analyzing trace with hash 309806588, now seen corresponding path program 1 times [2022-01-19 04:59:06,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:59:06,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423207611] [2022-01-19 04:59:06,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:59:06,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:59:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:59:06,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:59:06,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:59:06,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423207611] [2022-01-19 04:59:06,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423207611] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:59:06,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:59:06,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 04:59:06,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662180523] [2022-01-19 04:59:06,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:59:06,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 04:59:06,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:59:06,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 04:59:06,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 04:59:06,510 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 92 [2022-01-19 04:59:06,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 90 transitions, 505 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:06,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:59:06,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 92 [2022-01-19 04:59:06,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:59:06,617 INFO L129 PetriNetUnfolder]: 27/228 cut-off events. [2022-01-19 04:59:06,617 INFO L130 PetriNetUnfolder]: For 891/1087 co-relation queries the response was YES. [2022-01-19 04:59:06,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 701 conditions, 228 events. 27/228 cut-off events. For 891/1087 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 911 event pairs, 0 based on Foata normal form. 9/230 useless extension candidates. Maximal degree in co-relation 661. Up to 43 conditions per place. [2022-01-19 04:59:06,619 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 11 selfloop transitions, 5 changer transitions 10/102 dead transitions. [2022-01-19 04:59:06,620 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 102 transitions, 649 flow [2022-01-19 04:59:06,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 04:59:06,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 04:59:06,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 718 transitions. [2022-01-19 04:59:06,622 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8671497584541062 [2022-01-19 04:59:06,622 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 718 transitions. [2022-01-19 04:59:06,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 718 transitions. [2022-01-19 04:59:06,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:59:06,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 718 transitions. [2022-01-19 04:59:06,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.77777777777777) internal successors, (718), 9 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:06,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:06,626 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:06,626 INFO L186 Difference]: Start difference. First operand has 126 places, 90 transitions, 505 flow. Second operand 9 states and 718 transitions. [2022-01-19 04:59:06,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 102 transitions, 649 flow [2022-01-19 04:59:06,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 102 transitions, 587 flow, removed 28 selfloop flow, removed 13 redundant places. [2022-01-19 04:59:06,633 INFO L242 Difference]: Finished difference. Result has 119 places, 90 transitions, 496 flow [2022-01-19 04:59:06,633 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=496, PETRI_PLACES=119, PETRI_TRANSITIONS=90} [2022-01-19 04:59:06,633 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 35 predicate places. [2022-01-19 04:59:06,634 INFO L470 AbstractCegarLoop]: Abstraction has has 119 places, 90 transitions, 496 flow [2022-01-19 04:59:06,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:06,634 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:59:06,634 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:59:06,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 04:59:06,635 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:59:06,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:59:06,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1566907229, now seen corresponding path program 1 times [2022-01-19 04:59:06,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:59:06,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042113297] [2022-01-19 04:59:06,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:59:06,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:59:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:59:06,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:59:06,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:59:06,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042113297] [2022-01-19 04:59:06,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042113297] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:59:06,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:59:06,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 04:59:06,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477108303] [2022-01-19 04:59:06,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:59:06,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 04:59:06,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:59:06,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 04:59:06,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 04:59:06,755 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 04:59:06,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 90 transitions, 496 flow. Second operand has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:06,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:59:06,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 04:59:06,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:59:06,881 INFO L129 PetriNetUnfolder]: 39/260 cut-off events. [2022-01-19 04:59:06,882 INFO L130 PetriNetUnfolder]: For 992/1658 co-relation queries the response was YES. [2022-01-19 04:59:06,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 877 conditions, 260 events. 39/260 cut-off events. For 992/1658 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1111 event pairs, 3 based on Foata normal form. 5/258 useless extension candidates. Maximal degree in co-relation 839. Up to 50 conditions per place. [2022-01-19 04:59:06,885 INFO L132 encePairwiseOnDemand]: 84/92 looper letters, 9 selfloop transitions, 5 changer transitions 20/103 dead transitions. [2022-01-19 04:59:06,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 103 transitions, 648 flow [2022-01-19 04:59:06,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 04:59:06,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 04:59:06,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 777 transitions. [2022-01-19 04:59:06,887 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8445652173913043 [2022-01-19 04:59:06,887 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 777 transitions. [2022-01-19 04:59:06,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 777 transitions. [2022-01-19 04:59:06,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:59:06,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 777 transitions. [2022-01-19 04:59:06,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.7) internal successors, (777), 10 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:06,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:06,892 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:06,892 INFO L186 Difference]: Start difference. First operand has 119 places, 90 transitions, 496 flow. Second operand 10 states and 777 transitions. [2022-01-19 04:59:06,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 103 transitions, 648 flow [2022-01-19 04:59:06,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 103 transitions, 586 flow, removed 24 selfloop flow, removed 11 redundant places. [2022-01-19 04:59:06,898 INFO L242 Difference]: Finished difference. Result has 119 places, 83 transitions, 406 flow [2022-01-19 04:59:06,898 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=406, PETRI_PLACES=119, PETRI_TRANSITIONS=83} [2022-01-19 04:59:06,900 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 35 predicate places. [2022-01-19 04:59:06,900 INFO L470 AbstractCegarLoop]: Abstraction has has 119 places, 83 transitions, 406 flow [2022-01-19 04:59:06,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:06,901 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:59:06,901 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:59:06,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 04:59:06,901 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:59:06,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:59:06,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1615486883, now seen corresponding path program 1 times [2022-01-19 04:59:06,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:59:06,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720038352] [2022-01-19 04:59:06,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:59:06,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:59:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:59:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:59:06,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:59:06,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720038352] [2022-01-19 04:59:06,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720038352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:59:06,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:59:07,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 04:59:07,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415229152] [2022-01-19 04:59:07,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:59:07,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 04:59:07,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:59:07,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 04:59:07,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 04:59:07,006 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 04:59:07,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 83 transitions, 406 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:07,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:59:07,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 04:59:07,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:59:07,139 INFO L129 PetriNetUnfolder]: 238/668 cut-off events. [2022-01-19 04:59:07,140 INFO L130 PetriNetUnfolder]: For 542/559 co-relation queries the response was YES. [2022-01-19 04:59:07,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 668 events. 238/668 cut-off events. For 542/559 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4283 event pairs, 4 based on Foata normal form. 0/630 useless extension candidates. Maximal degree in co-relation 1366. Up to 171 conditions per place. [2022-01-19 04:59:07,146 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 19 selfloop transitions, 13 changer transitions 13/114 dead transitions. [2022-01-19 04:59:07,146 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 114 transitions, 560 flow [2022-01-19 04:59:07,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 04:59:07,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 04:59:07,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 797 transitions. [2022-01-19 04:59:07,148 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.866304347826087 [2022-01-19 04:59:07,148 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 797 transitions. [2022-01-19 04:59:07,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 797 transitions. [2022-01-19 04:59:07,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:59:07,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 797 transitions. [2022-01-19 04:59:07,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.7) internal successors, (797), 10 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:07,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:07,153 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:07,153 INFO L186 Difference]: Start difference. First operand has 119 places, 83 transitions, 406 flow. Second operand 10 states and 797 transitions. [2022-01-19 04:59:07,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 114 transitions, 560 flow [2022-01-19 04:59:07,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 114 transitions, 496 flow, removed 18 selfloop flow, removed 15 redundant places. [2022-01-19 04:59:07,158 INFO L242 Difference]: Finished difference. Result has 113 places, 95 transitions, 440 flow [2022-01-19 04:59:07,158 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=440, PETRI_PLACES=113, PETRI_TRANSITIONS=95} [2022-01-19 04:59:07,159 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 29 predicate places. [2022-01-19 04:59:07,159 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 95 transitions, 440 flow [2022-01-19 04:59:07,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:07,159 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:59:07,159 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:59:07,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 04:59:07,160 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:59:07,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:59:07,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2075842730, now seen corresponding path program 1 times [2022-01-19 04:59:07,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:59:07,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989875498] [2022-01-19 04:59:07,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:59:07,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:59:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:59:07,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:59:07,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:59:07,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989875498] [2022-01-19 04:59:07,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989875498] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:59:07,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:59:07,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 04:59:07,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977394237] [2022-01-19 04:59:07,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:59:07,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 04:59:07,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:59:07,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 04:59:07,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 04:59:07,255 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 04:59:07,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 95 transitions, 440 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:07,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:59:07,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 04:59:07,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:59:07,451 INFO L129 PetriNetUnfolder]: 212/679 cut-off events. [2022-01-19 04:59:07,451 INFO L130 PetriNetUnfolder]: For 1342/1451 co-relation queries the response was YES. [2022-01-19 04:59:07,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2160 conditions, 679 events. 212/679 cut-off events. For 1342/1451 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4588 event pairs, 0 based on Foata normal form. 41/704 useless extension candidates. Maximal degree in co-relation 2089. Up to 187 conditions per place. [2022-01-19 04:59:07,456 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 24 selfloop transitions, 27 changer transitions 11/131 dead transitions. [2022-01-19 04:59:07,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 131 transitions, 764 flow [2022-01-19 04:59:07,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 04:59:07,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 04:59:07,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1031 transitions. [2022-01-19 04:59:07,459 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8620401337792643 [2022-01-19 04:59:07,459 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1031 transitions. [2022-01-19 04:59:07,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1031 transitions. [2022-01-19 04:59:07,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:59:07,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1031 transitions. [2022-01-19 04:59:07,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.3076923076923) internal successors, (1031), 13 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:07,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:07,464 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:07,464 INFO L186 Difference]: Start difference. First operand has 113 places, 95 transitions, 440 flow. Second operand 13 states and 1031 transitions. [2022-01-19 04:59:07,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 131 transitions, 764 flow [2022-01-19 04:59:07,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 131 transitions, 762 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 04:59:07,470 INFO L242 Difference]: Finished difference. Result has 130 places, 112 transitions, 646 flow [2022-01-19 04:59:07,470 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=646, PETRI_PLACES=130, PETRI_TRANSITIONS=112} [2022-01-19 04:59:07,471 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 46 predicate places. [2022-01-19 04:59:07,471 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 112 transitions, 646 flow [2022-01-19 04:59:07,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:07,471 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:59:07,471 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:59:07,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 04:59:07,472 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:59:07,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:59:07,472 INFO L85 PathProgramCache]: Analyzing trace with hash 10180997, now seen corresponding path program 1 times [2022-01-19 04:59:07,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:59:07,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196924203] [2022-01-19 04:59:07,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:59:07,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:59:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:59:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:59:07,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:59:07,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196924203] [2022-01-19 04:59:07,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196924203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:59:07,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:59:07,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 04:59:07,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848126663] [2022-01-19 04:59:07,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:59:07,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 04:59:07,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:59:07,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 04:59:07,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-19 04:59:07,546 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 04:59:07,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 112 transitions, 646 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:07,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:59:07,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 04:59:07,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:59:07,789 INFO L129 PetriNetUnfolder]: 146/593 cut-off events. [2022-01-19 04:59:07,789 INFO L130 PetriNetUnfolder]: For 2287/2406 co-relation queries the response was YES. [2022-01-19 04:59:07,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2371 conditions, 593 events. 146/593 cut-off events. For 2287/2406 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4336 event pairs, 0 based on Foata normal form. 43/620 useless extension candidates. Maximal degree in co-relation 2292. Up to 132 conditions per place. [2022-01-19 04:59:07,794 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 19 selfloop transitions, 31 changer transitions 24/139 dead transitions. [2022-01-19 04:59:07,794 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 139 transitions, 964 flow [2022-01-19 04:59:07,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 04:59:07,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 04:59:07,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1254 transitions. [2022-01-19 04:59:07,799 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8519021739130435 [2022-01-19 04:59:07,799 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1254 transitions. [2022-01-19 04:59:07,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1254 transitions. [2022-01-19 04:59:07,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:59:07,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1254 transitions. [2022-01-19 04:59:07,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 78.375) internal successors, (1254), 16 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:07,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:07,807 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:07,807 INFO L186 Difference]: Start difference. First operand has 130 places, 112 transitions, 646 flow. Second operand 16 states and 1254 transitions. [2022-01-19 04:59:07,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 139 transitions, 964 flow [2022-01-19 04:59:07,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 139 transitions, 893 flow, removed 24 selfloop flow, removed 7 redundant places. [2022-01-19 04:59:07,820 INFO L242 Difference]: Finished difference. Result has 145 places, 109 transitions, 660 flow [2022-01-19 04:59:07,820 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=660, PETRI_PLACES=145, PETRI_TRANSITIONS=109} [2022-01-19 04:59:07,821 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 61 predicate places. [2022-01-19 04:59:07,822 INFO L470 AbstractCegarLoop]: Abstraction has has 145 places, 109 transitions, 660 flow [2022-01-19 04:59:07,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:07,822 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:59:07,822 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:59:07,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 04:59:07,823 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:59:07,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:59:07,823 INFO L85 PathProgramCache]: Analyzing trace with hash 5191854, now seen corresponding path program 1 times [2022-01-19 04:59:07,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:59:07,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482909384] [2022-01-19 04:59:07,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:59:07,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:59:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:59:07,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:59:07,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:59:07,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482909384] [2022-01-19 04:59:07,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482909384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:59:07,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:59:07,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 04:59:07,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409508684] [2022-01-19 04:59:07,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:59:07,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 04:59:07,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:59:07,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 04:59:07,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 04:59:07,938 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-01-19 04:59:07,939 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 109 transitions, 660 flow. Second operand has 8 states, 8 states have (on average 72.25) internal successors, (578), 8 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:07,939 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:59:07,939 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-01-19 04:59:07,939 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:59:08,059 INFO L129 PetriNetUnfolder]: 70/499 cut-off events. [2022-01-19 04:59:08,059 INFO L130 PetriNetUnfolder]: For 1408/1430 co-relation queries the response was YES. [2022-01-19 04:59:08,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1670 conditions, 499 events. 70/499 cut-off events. For 1408/1430 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3789 event pairs, 1 based on Foata normal form. 1/484 useless extension candidates. Maximal degree in co-relation 1603. Up to 77 conditions per place. [2022-01-19 04:59:08,063 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 11 selfloop transitions, 7 changer transitions 37/116 dead transitions. [2022-01-19 04:59:08,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 116 transitions, 752 flow [2022-01-19 04:59:08,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 04:59:08,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 04:59:08,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 659 transitions. [2022-01-19 04:59:08,065 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7958937198067633 [2022-01-19 04:59:08,065 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 659 transitions. [2022-01-19 04:59:08,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 659 transitions. [2022-01-19 04:59:08,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:59:08,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 659 transitions. [2022-01-19 04:59:08,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.22222222222223) internal successors, (659), 9 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:08,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:08,068 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:08,068 INFO L186 Difference]: Start difference. First operand has 145 places, 109 transitions, 660 flow. Second operand 9 states and 659 transitions. [2022-01-19 04:59:08,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 116 transitions, 752 flow [2022-01-19 04:59:08,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 116 transitions, 640 flow, removed 15 selfloop flow, removed 17 redundant places. [2022-01-19 04:59:08,081 INFO L242 Difference]: Finished difference. Result has 137 places, 79 transitions, 336 flow [2022-01-19 04:59:08,081 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=336, PETRI_PLACES=137, PETRI_TRANSITIONS=79} [2022-01-19 04:59:08,082 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 53 predicate places. [2022-01-19 04:59:08,082 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 79 transitions, 336 flow [2022-01-19 04:59:08,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.25) internal successors, (578), 8 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:08,082 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:59:08,082 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:59:08,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 04:59:08,083 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:59:08,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:59:08,083 INFO L85 PathProgramCache]: Analyzing trace with hash 731227348, now seen corresponding path program 2 times [2022-01-19 04:59:08,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:59:08,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189977457] [2022-01-19 04:59:08,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:59:08,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:59:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:59:08,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:59:08,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:59:08,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189977457] [2022-01-19 04:59:08,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189977457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:59:08,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:59:08,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 04:59:08,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836825239] [2022-01-19 04:59:08,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:59:08,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 04:59:08,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:59:08,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 04:59:08,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 04:59:08,153 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 92 [2022-01-19 04:59:08,154 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 79 transitions, 336 flow. Second operand has 7 states, 7 states have (on average 75.14285714285714) internal successors, (526), 7 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:08,154 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:59:08,154 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 92 [2022-01-19 04:59:08,154 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:59:08,213 INFO L129 PetriNetUnfolder]: 6/94 cut-off events. [2022-01-19 04:59:08,213 INFO L130 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-01-19 04:59:08,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 94 events. 6/94 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 97 event pairs, 0 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 216. Up to 7 conditions per place. [2022-01-19 04:59:08,214 INFO L132 encePairwiseOnDemand]: 85/92 looper letters, 0 selfloop transitions, 0 changer transitions 78/78 dead transitions. [2022-01-19 04:59:08,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 78 transitions, 364 flow [2022-01-19 04:59:08,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 04:59:08,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 04:59:08,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 527 transitions. [2022-01-19 04:59:08,215 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8183229813664596 [2022-01-19 04:59:08,215 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 527 transitions. [2022-01-19 04:59:08,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 527 transitions. [2022-01-19 04:59:08,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:59:08,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 527 transitions. [2022-01-19 04:59:08,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.28571428571429) internal successors, (527), 7 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:08,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:08,218 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:08,218 INFO L186 Difference]: Start difference. First operand has 137 places, 79 transitions, 336 flow. Second operand 7 states and 527 transitions. [2022-01-19 04:59:08,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 78 transitions, 364 flow [2022-01-19 04:59:08,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 78 transitions, 244 flow, removed 16 selfloop flow, removed 29 redundant places. [2022-01-19 04:59:08,220 INFO L242 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2022-01-19 04:59:08,220 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2022-01-19 04:59:08,221 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 10 predicate places. [2022-01-19 04:59:08,221 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2022-01-19 04:59:08,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.14285714285714) internal successors, (526), 7 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:08,223 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 04:59:08,224 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 04:59:08,224 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 04:59:08,224 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 04:59:08,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 04:59:08,227 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:59:08,229 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 04:59:08,229 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 04:59:08,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 04:59:08 BasicIcfg [2022-01-19 04:59:08,231 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 04:59:08,232 INFO L158 Benchmark]: Toolchain (without parser) took 5474.46ms. Allocated memory was 354.4MB in the beginning and 488.6MB in the end (delta: 134.2MB). Free memory was 306.2MB in the beginning and 282.7MB in the end (delta: 23.5MB). Peak memory consumption was 159.3MB. Max. memory is 16.0GB. [2022-01-19 04:59:08,232 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 354.4MB. Free memory is still 324.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 04:59:08,232 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.69ms. Allocated memory is still 354.4MB. Free memory was 306.1MB in the beginning and 319.0MB in the end (delta: -12.9MB). Peak memory consumption was 17.5MB. Max. memory is 16.0GB. [2022-01-19 04:59:08,232 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.21ms. Allocated memory is still 354.4MB. Free memory was 319.0MB in the beginning and 316.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 04:59:08,233 INFO L158 Benchmark]: Boogie Preprocessor took 33.21ms. Allocated memory is still 354.4MB. Free memory was 316.9MB in the beginning and 315.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 04:59:08,233 INFO L158 Benchmark]: RCFGBuilder took 414.98ms. Allocated memory is still 354.4MB. Free memory was 315.7MB in the beginning and 302.8MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-19 04:59:08,233 INFO L158 Benchmark]: TraceAbstraction took 4569.40ms. Allocated memory was 354.4MB in the beginning and 488.6MB in the end (delta: 134.2MB). Free memory was 302.2MB in the beginning and 282.7MB in the end (delta: 19.5MB). Peak memory consumption was 154.3MB. Max. memory is 16.0GB. [2022-01-19 04:59:08,234 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 354.4MB. Free memory is still 324.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 393.69ms. Allocated memory is still 354.4MB. Free memory was 306.1MB in the beginning and 319.0MB in the end (delta: -12.9MB). Peak memory consumption was 17.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.21ms. Allocated memory is still 354.4MB. Free memory was 319.0MB in the beginning and 316.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.21ms. Allocated memory is still 354.4MB. Free memory was 316.9MB in the beginning and 315.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 414.98ms. Allocated memory is still 354.4MB. Free memory was 315.7MB in the beginning and 302.8MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 4569.40ms. Allocated memory was 354.4MB in the beginning and 488.6MB in the end (delta: 134.2MB). Free memory was 302.2MB in the beginning and 282.7MB in the end (delta: 19.5MB). Peak memory consumption was 154.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 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, 115 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: 4.4s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 403 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 403 mSDsluCounter, 610 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 609 mSDsCounter, 104 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 701 IncrementalHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 104 mSolverCounterUnsat, 147 mSDtfsCounter, 701 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=660occurred in iteration=9, InterpolantAutomatonStates: 122, 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, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 676 NumberOfCodeBlocks, 676 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 665 ConstructedInterpolants, 0 QuantifiedInterpolants, 3061 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! [2022-01-19 04:59:08,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...