/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/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 05:00:46,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 05:00:46,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 05:00:46,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 05:00:46,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 05:00:46,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 05:00:46,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 05:00:46,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 05:00:46,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 05:00:46,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 05:00:46,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 05:00:46,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 05:00:46,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 05:00:46,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 05:00:46,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 05:00:46,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 05:00:46,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 05:00:46,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 05:00:46,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 05:00:46,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 05:00:46,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 05:00:46,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 05:00:46,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 05:00:46,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 05:00:46,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 05:00:46,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 05:00:46,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 05:00:46,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 05:00:46,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 05:00:46,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-19 05:00:46,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 05:00:46,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 05:00:46,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 05:00:46,450 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 05:00:46,474 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 05:00:46,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 05:00:46,475 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 05:00:46,476 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 05:00:46,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 05:00:46,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 05:00:46,476 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 05:00:46,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 05:00:46,476 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 05:00:46,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 05:00:46,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 05:00:46,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 05:00:46,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 05:00:46,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 05:00:46,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 05:00:46,477 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 05:00:46,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 05:00:46,477 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 05:00:46,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 05:00:46,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 05:00:46,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 05:00:46,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 05:00:46,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 05:00:46,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 05:00:46,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 05:00:46,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 05:00:46,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 05:00:46,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 05:00:46,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 05:00:46,479 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 05:00:46,479 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 05:00:46,479 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 05:00:46,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 05:00:46,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 05:00:46,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 05:00:46,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 05:00:46,784 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 05:00:46,811 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 05:00:46,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-19 05:00:46,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e4d00128/298cb1119f79475c8330d6f9ebf4a6c2/FLAGf410d6537 [2022-01-19 05:00:47,415 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 05:00:47,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-19 05:00:47,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e4d00128/298cb1119f79475c8330d6f9ebf4a6c2/FLAGf410d6537 [2022-01-19 05:00:47,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e4d00128/298cb1119f79475c8330d6f9ebf4a6c2 [2022-01-19 05:00:47,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 05:00:47,779 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 05:00:47,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 05:00:47,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 05:00:47,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 05:00:47,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 05:00:47" (1/1) ... [2022-01-19 05:00:47,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d8aa58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:47, skipping insertion in model container [2022-01-19 05:00:47,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 05:00:47" (1/1) ... [2022-01-19 05:00:47,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 05:00:47,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 05:00:47,967 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/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-01-19 05:00:48,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 05:00:48,208 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 05:00:48,222 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/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-01-19 05:00:48,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 05:00:48,317 INFO L208 MainTranslator]: Completed translation [2022-01-19 05:00:48,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:48 WrapperNode [2022-01-19 05:00:48,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 05:00:48,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 05:00:48,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 05:00:48,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 05:00:48,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:48" (1/1) ... [2022-01-19 05:00:48,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:48" (1/1) ... [2022-01-19 05:00:48,405 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-01-19 05:00:48,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 05:00:48,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 05:00:48,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 05:00:48,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 05:00:48,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:48" (1/1) ... [2022-01-19 05:00:48,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:48" (1/1) ... [2022-01-19 05:00:48,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:48" (1/1) ... [2022-01-19 05:00:48,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:48" (1/1) ... [2022-01-19 05:00:48,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:48" (1/1) ... [2022-01-19 05:00:48,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:48" (1/1) ... [2022-01-19 05:00:48,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:48" (1/1) ... [2022-01-19 05:00:48,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 05:00:48,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 05:00:48,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 05:00:48,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 05:00:48,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:48" (1/1) ... [2022-01-19 05:00:48,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 05:00:48,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:00:48,461 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 05:00:48,467 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 05:00:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 05:00:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 05:00:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 05:00:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 05:00:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 05:00:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-19 05:00:48,490 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-19 05:00:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-19 05:00:48,490 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-19 05:00:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-19 05:00:48,491 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-19 05:00:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 05:00:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 05:00:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 05:00:48,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 05:00:48,492 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 05:00:48,608 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 05:00:48,609 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 05:00:48,698 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 05:00:48,701 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 05:00:48,702 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 05:00:48,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 05:00:48 BoogieIcfgContainer [2022-01-19 05:00:48,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 05:00:48,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 05:00:48,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 05:00:48,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 05:00:48,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 05:00:47" (1/3) ... [2022-01-19 05:00:48,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@210a406c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 05:00:48, skipping insertion in model container [2022-01-19 05:00:48,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:48" (2/3) ... [2022-01-19 05:00:48,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@210a406c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 05:00:48, skipping insertion in model container [2022-01-19 05:00:48,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 05:00:48" (3/3) ... [2022-01-19 05:00:48,707 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-19 05:00:48,710 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 05:00:48,710 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 05:00:48,710 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 05:00:48,728 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,729 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,729 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,729 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,729 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,729 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,729 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,729 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,730 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,730 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,730 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,730 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,730 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,730 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,730 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,730 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,730 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,731 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,731 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,731 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,731 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,731 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,731 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,731 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,732 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,732 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,732 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,732 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,732 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,732 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,732 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,732 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,732 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,732 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,733 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,733 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,734 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,734 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,734 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,735 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,736 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,736 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,736 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,736 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,737 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,737 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,737 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,737 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:48,737 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 05:00:48,766 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 05:00:48,774 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 05:00:48,775 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 05:00:48,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2022-01-19 05:00:48,819 INFO L129 PetriNetUnfolder]: 2/88 cut-off events. [2022-01-19 05:00:48,819 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 05:00:48,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-01-19 05:00:48,822 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2022-01-19 05:00:48,824 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2022-01-19 05:00:48,855 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2022-01-19 05:00:48,855 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 05:00:48,855 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:48,856 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 05:00:48,856 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 05:00:48,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:48,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1360834222, now seen corresponding path program 1 times [2022-01-19 05:00:48,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:48,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825538146] [2022-01-19 05:00:48,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:48,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:49,148 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 05:00:49,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:49,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825538146] [2022-01-19 05:00:49,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825538146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:49,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:49,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 05:00:49,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451859298] [2022-01-19 05:00:49,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:49,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 05:00:49,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:49,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 05:00:49,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 05:00:49,213 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 91 [2022-01-19 05:00:49,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 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 05:00:49,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:49,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 91 [2022-01-19 05:00:49,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:49,373 INFO L129 PetriNetUnfolder]: 3/89 cut-off events. [2022-01-19 05:00:49,374 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 05:00:49,374 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 89 events. 3/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 0 based on Foata normal form. 4/92 useless extension candidates. Maximal degree in co-relation 87. Up to 7 conditions per place. [2022-01-19 05:00:49,375 INFO L132 encePairwiseOnDemand]: 84/91 looper letters, 9 selfloop transitions, 2 changer transitions 11/83 dead transitions. [2022-01-19 05:00:49,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 83 transitions, 217 flow [2022-01-19 05:00:49,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 05:00:49,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 05:00:49,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 709 transitions. [2022-01-19 05:00:49,388 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8656898656898657 [2022-01-19 05:00:49,388 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 709 transitions. [2022-01-19 05:00:49,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 709 transitions. [2022-01-19 05:00:49,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:49,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 709 transitions. [2022-01-19 05:00:49,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.77777777777777) internal successors, (709), 9 states have internal predecessors, (709), 0 states have call successors, (0), 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 05:00:49,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 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 05:00:49,404 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 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 05:00:49,405 INFO L186 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 9 states and 709 transitions. [2022-01-19 05:00:49,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 83 transitions, 217 flow [2022-01-19 05:00:49,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 83 transitions, 214 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 05:00:49,410 INFO L242 Difference]: Finished difference. Result has 95 places, 72 transitions, 170 flow [2022-01-19 05:00:49,411 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=95, PETRI_TRANSITIONS=72} [2022-01-19 05:00:49,413 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 12 predicate places. [2022-01-19 05:00:49,413 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 72 transitions, 170 flow [2022-01-19 05:00:49,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 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 05:00:49,414 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:49,414 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 05:00:49,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 05:00:49,414 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 05:00:49,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:49,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1431108973, now seen corresponding path program 1 times [2022-01-19 05:00:49,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:49,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13902767] [2022-01-19 05:00:49,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:49,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:49,550 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 05:00:49,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:49,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13902767] [2022-01-19 05:00:49,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13902767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:49,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:49,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 05:00:49,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204949751] [2022-01-19 05:00:49,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:49,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 05:00:49,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:49,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 05:00:49,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 05:00:49,554 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 91 [2022-01-19 05:00:49,554 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 72 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 states have internal predecessors, (523), 0 states have call successors, (0), 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 05:00:49,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:49,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 91 [2022-01-19 05:00:49,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:49,682 INFO L129 PetriNetUnfolder]: 30/171 cut-off events. [2022-01-19 05:00:49,682 INFO L130 PetriNetUnfolder]: For 43/67 co-relation queries the response was YES. [2022-01-19 05:00:49,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 171 events. 30/171 cut-off events. For 43/67 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 521 event pairs, 3 based on Foata normal form. 4/169 useless extension candidates. Maximal degree in co-relation 291. Up to 21 conditions per place. [2022-01-19 05:00:49,684 INFO L132 encePairwiseOnDemand]: 83/91 looper letters, 13 selfloop transitions, 4 changer transitions 18/93 dead transitions. [2022-01-19 05:00:49,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 93 transitions, 307 flow [2022-01-19 05:00:49,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 05:00:49,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 05:00:49,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 767 transitions. [2022-01-19 05:00:49,687 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8428571428571429 [2022-01-19 05:00:49,687 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 767 transitions. [2022-01-19 05:00:49,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 767 transitions. [2022-01-19 05:00:49,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:49,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 767 transitions. [2022-01-19 05:00:49,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 76.7) internal successors, (767), 10 states have internal predecessors, (767), 0 states have call successors, (0), 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 05:00:49,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 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 05:00:49,692 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 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 05:00:49,692 INFO L186 Difference]: Start difference. First operand has 95 places, 72 transitions, 170 flow. Second operand 10 states and 767 transitions. [2022-01-19 05:00:49,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 93 transitions, 307 flow [2022-01-19 05:00:49,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 93 transitions, 273 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-01-19 05:00:49,695 INFO L242 Difference]: Finished difference. Result has 97 places, 72 transitions, 184 flow [2022-01-19 05:00:49,695 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=184, PETRI_PLACES=97, PETRI_TRANSITIONS=72} [2022-01-19 05:00:49,696 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 14 predicate places. [2022-01-19 05:00:49,696 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 72 transitions, 184 flow [2022-01-19 05:00:49,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 states have internal predecessors, (523), 0 states have call successors, (0), 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 05:00:49,696 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:49,696 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 05:00:49,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 05:00:49,697 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 05:00:49,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:49,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1190273966, now seen corresponding path program 1 times [2022-01-19 05:00:49,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:49,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642443902] [2022-01-19 05:00:49,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:49,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:49,789 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 05:00:49,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:49,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642443902] [2022-01-19 05:00:49,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642443902] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:49,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:49,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 05:00:49,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91414281] [2022-01-19 05:00:49,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:49,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 05:00:49,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:49,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 05:00:49,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 05:00:49,796 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-01-19 05:00:49,796 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 72 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:49,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:49,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-01-19 05:00:49,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:49,988 INFO L129 PetriNetUnfolder]: 96/348 cut-off events. [2022-01-19 05:00:49,988 INFO L130 PetriNetUnfolder]: For 48/49 co-relation queries the response was YES. [2022-01-19 05:00:49,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 348 events. 96/348 cut-off events. For 48/49 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1643 event pairs, 15 based on Foata normal form. 8/353 useless extension candidates. Maximal degree in co-relation 592. Up to 81 conditions per place. [2022-01-19 05:00:49,995 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 15 selfloop transitions, 6 changer transitions 19/99 dead transitions. [2022-01-19 05:00:49,995 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 99 transitions, 322 flow [2022-01-19 05:00:49,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 05:00:49,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 05:00:50,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 708 transitions. [2022-01-19 05:00:50,003 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8644688644688645 [2022-01-19 05:00:50,003 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 708 transitions. [2022-01-19 05:00:50,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 708 transitions. [2022-01-19 05:00:50,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:50,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 708 transitions. [2022-01-19 05:00:50,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.66666666666667) internal successors, (708), 9 states have internal predecessors, (708), 0 states have call successors, (0), 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 05:00:50,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 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 05:00:50,009 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 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 05:00:50,009 INFO L186 Difference]: Start difference. First operand has 97 places, 72 transitions, 184 flow. Second operand 9 states and 708 transitions. [2022-01-19 05:00:50,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 99 transitions, 322 flow [2022-01-19 05:00:50,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 99 transitions, 296 flow, removed 8 selfloop flow, removed 10 redundant places. [2022-01-19 05:00:50,019 INFO L242 Difference]: Finished difference. Result has 95 places, 75 transitions, 214 flow [2022-01-19 05:00:50,019 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=214, PETRI_PLACES=95, PETRI_TRANSITIONS=75} [2022-01-19 05:00:50,022 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 12 predicate places. [2022-01-19 05:00:50,022 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 75 transitions, 214 flow [2022-01-19 05:00:50,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:50,022 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:50,023 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 05:00:50,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 05:00:50,024 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 05:00:50,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:50,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1107986108, now seen corresponding path program 1 times [2022-01-19 05:00:50,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:50,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440426115] [2022-01-19 05:00:50,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:50,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:50,178 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 05:00:50,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:50,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440426115] [2022-01-19 05:00:50,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440426115] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:50,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:50,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 05:00:50,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978891291] [2022-01-19 05:00:50,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:50,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 05:00:50,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:50,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 05:00:50,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 05:00:50,184 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-01-19 05:00:50,184 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 75 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 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 05:00:50,184 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:50,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-01-19 05:00:50,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:50,314 INFO L129 PetriNetUnfolder]: 57/246 cut-off events. [2022-01-19 05:00:50,314 INFO L130 PetriNetUnfolder]: For 327/336 co-relation queries the response was YES. [2022-01-19 05:00:50,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 246 events. 57/246 cut-off events. For 327/336 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 903 event pairs, 0 based on Foata normal form. 7/251 useless extension candidates. Maximal degree in co-relation 624. Up to 80 conditions per place. [2022-01-19 05:00:50,317 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 16 selfloop transitions, 9 changer transitions 19/103 dead transitions. [2022-01-19 05:00:50,317 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 103 transitions, 491 flow [2022-01-19 05:00:50,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 05:00:50,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 05:00:50,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 786 transitions. [2022-01-19 05:00:50,320 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8637362637362638 [2022-01-19 05:00:50,320 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 786 transitions. [2022-01-19 05:00:50,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 786 transitions. [2022-01-19 05:00:50,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:50,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 786 transitions. [2022-01-19 05:00:50,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.6) internal successors, (786), 10 states have internal predecessors, (786), 0 states have call successors, (0), 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 05:00:50,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 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 05:00:50,325 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 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 05:00:50,325 INFO L186 Difference]: Start difference. First operand has 95 places, 75 transitions, 214 flow. Second operand 10 states and 786 transitions. [2022-01-19 05:00:50,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 103 transitions, 491 flow [2022-01-19 05:00:50,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 103 transitions, 467 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-01-19 05:00:50,333 INFO L242 Difference]: Finished difference. Result has 101 places, 78 transitions, 282 flow [2022-01-19 05:00:50,334 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=282, PETRI_PLACES=101, PETRI_TRANSITIONS=78} [2022-01-19 05:00:50,335 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 18 predicate places. [2022-01-19 05:00:50,335 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 78 transitions, 282 flow [2022-01-19 05:00:50,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 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 05:00:50,335 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:50,336 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 05:00:50,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 05:00:50,336 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 05:00:50,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:50,337 INFO L85 PathProgramCache]: Analyzing trace with hash 908613895, now seen corresponding path program 1 times [2022-01-19 05:00:50,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:50,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983531749] [2022-01-19 05:00:50,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:50,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:50,483 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 05:00:50,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:50,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983531749] [2022-01-19 05:00:50,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983531749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:50,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:50,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 05:00:50,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714101698] [2022-01-19 05:00:50,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:50,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 05:00:50,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:50,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 05:00:50,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-19 05:00:50,486 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-01-19 05:00:50,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 78 transitions, 282 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 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 05:00:50,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:50,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-01-19 05:00:50,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:50,607 INFO L129 PetriNetUnfolder]: 21/138 cut-off events. [2022-01-19 05:00:50,607 INFO L130 PetriNetUnfolder]: For 403/415 co-relation queries the response was YES. [2022-01-19 05:00:50,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 138 events. 21/138 cut-off events. For 403/415 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 298 event pairs, 0 based on Foata normal form. 8/144 useless extension candidates. Maximal degree in co-relation 392. Up to 35 conditions per place. [2022-01-19 05:00:50,608 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 10 selfloop transitions, 12 changer transitions 13/94 dead transitions. [2022-01-19 05:00:50,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 94 transitions, 490 flow [2022-01-19 05:00:50,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 05:00:50,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 05:00:50,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 851 transitions. [2022-01-19 05:00:50,611 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8501498501498501 [2022-01-19 05:00:50,611 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 851 transitions. [2022-01-19 05:00:50,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 851 transitions. [2022-01-19 05:00:50,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:50,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 851 transitions. [2022-01-19 05:00:50,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 77.36363636363636) internal successors, (851), 11 states have internal predecessors, (851), 0 states have call successors, (0), 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 05:00:50,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 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 05:00:50,615 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 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 05:00:50,615 INFO L186 Difference]: Start difference. First operand has 101 places, 78 transitions, 282 flow. Second operand 11 states and 851 transitions. [2022-01-19 05:00:50,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 94 transitions, 490 flow [2022-01-19 05:00:50,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 94 transitions, 391 flow, removed 39 selfloop flow, removed 10 redundant places. [2022-01-19 05:00:50,618 INFO L242 Difference]: Finished difference. Result has 103 places, 78 transitions, 268 flow [2022-01-19 05:00:50,618 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=268, PETRI_PLACES=103, PETRI_TRANSITIONS=78} [2022-01-19 05:00:50,619 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 20 predicate places. [2022-01-19 05:00:50,619 INFO L470 AbstractCegarLoop]: Abstraction has has 103 places, 78 transitions, 268 flow [2022-01-19 05:00:50,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 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 05:00:50,619 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:50,620 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] [2022-01-19 05:00:50,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 05:00:50,620 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 05:00:50,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:50,620 INFO L85 PathProgramCache]: Analyzing trace with hash 806856149, now seen corresponding path program 1 times [2022-01-19 05:00:50,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:50,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89867196] [2022-01-19 05:00:50,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:50,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:50,719 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 05:00:50,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:50,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89867196] [2022-01-19 05:00:50,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89867196] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:50,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:50,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 05:00:50,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634045842] [2022-01-19 05:00:50,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:50,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 05:00:50,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:50,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 05:00:50,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 05:00:50,723 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2022-01-19 05:00:50,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 78 transitions, 268 flow. Second operand has 7 states, 7 states have (on average 72.42857142857143) internal successors, (507), 7 states have internal predecessors, (507), 0 states have call successors, (0), 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 05:00:50,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:50,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2022-01-19 05:00:50,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:50,872 INFO L129 PetriNetUnfolder]: 20/179 cut-off events. [2022-01-19 05:00:50,874 INFO L130 PetriNetUnfolder]: For 165/172 co-relation queries the response was YES. [2022-01-19 05:00:50,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 179 events. 20/179 cut-off events. For 165/172 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 530 event pairs, 3 based on Foata normal form. 1/175 useless extension candidates. Maximal degree in co-relation 350. Up to 27 conditions per place. [2022-01-19 05:00:50,875 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 17 selfloop transitions, 5 changer transitions 4/87 dead transitions. [2022-01-19 05:00:50,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 87 transitions, 343 flow [2022-01-19 05:00:50,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 05:00:50,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 05:00:50,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 587 transitions. [2022-01-19 05:00:50,877 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8063186813186813 [2022-01-19 05:00:50,877 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 587 transitions. [2022-01-19 05:00:50,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 587 transitions. [2022-01-19 05:00:50,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:50,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 587 transitions. [2022-01-19 05:00:50,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 73.375) internal successors, (587), 8 states have internal predecessors, (587), 0 states have call successors, (0), 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 05:00:50,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 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 05:00:50,882 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 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 05:00:50,882 INFO L186 Difference]: Start difference. First operand has 103 places, 78 transitions, 268 flow. Second operand 8 states and 587 transitions. [2022-01-19 05:00:50,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 87 transitions, 343 flow [2022-01-19 05:00:50,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 87 transitions, 261 flow, removed 22 selfloop flow, removed 15 redundant places. [2022-01-19 05:00:50,888 INFO L242 Difference]: Finished difference. Result has 96 places, 80 transitions, 217 flow [2022-01-19 05:00:50,888 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=217, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2022-01-19 05:00:50,889 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 13 predicate places. [2022-01-19 05:00:50,889 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 217 flow [2022-01-19 05:00:50,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.42857142857143) internal successors, (507), 7 states have internal predecessors, (507), 0 states have call successors, (0), 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 05:00:50,889 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:50,889 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] [2022-01-19 05:00:50,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 05:00:50,890 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 05:00:50,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:50,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1005158123, now seen corresponding path program 2 times [2022-01-19 05:00:50,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:50,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323498531] [2022-01-19 05:00:50,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:50,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:50,991 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 05:00:50,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:50,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323498531] [2022-01-19 05:00:50,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323498531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:50,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:50,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 05:00:50,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360803673] [2022-01-19 05:00:50,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:50,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 05:00:50,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:50,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 05:00:50,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 05:00:50,993 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2022-01-19 05:00:50,994 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 217 flow. Second operand has 7 states, 7 states have (on average 72.42857142857143) internal successors, (507), 7 states have internal predecessors, (507), 0 states have call successors, (0), 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 05:00:50,994 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:50,994 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2022-01-19 05:00:50,994 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:51,094 INFO L129 PetriNetUnfolder]: 23/185 cut-off events. [2022-01-19 05:00:51,094 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-01-19 05:00:51,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 185 events. 23/185 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 631 event pairs, 2 based on Foata normal form. 1/181 useless extension candidates. Maximal degree in co-relation 308. Up to 22 conditions per place. [2022-01-19 05:00:51,096 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2022-01-19 05:00:51,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 83 transitions, 278 flow [2022-01-19 05:00:51,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 05:00:51,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 05:00:51,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 582 transitions. [2022-01-19 05:00:51,098 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7994505494505495 [2022-01-19 05:00:51,098 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 582 transitions. [2022-01-19 05:00:51,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 582 transitions. [2022-01-19 05:00:51,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:51,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 582 transitions. [2022-01-19 05:00:51,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.75) internal successors, (582), 8 states have internal predecessors, (582), 0 states have call successors, (0), 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 05:00:51,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 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 05:00:51,104 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 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 05:00:51,104 INFO L186 Difference]: Start difference. First operand has 96 places, 80 transitions, 217 flow. Second operand 8 states and 582 transitions. [2022-01-19 05:00:51,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 83 transitions, 278 flow [2022-01-19 05:00:51,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 83 transitions, 269 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-01-19 05:00:51,106 INFO L242 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2022-01-19 05:00:51,106 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2022-01-19 05:00:51,107 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 11 predicate places. [2022-01-19 05:00:51,107 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2022-01-19 05:00:51,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.42857142857143) internal successors, (507), 7 states have internal predecessors, (507), 0 states have call successors, (0), 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 05:00:51,109 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 05:00:51,110 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 05:00:51,110 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 05:00:51,110 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 05:00:51,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 05:00:51,114 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-01-19 05:00:51,116 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 05:00:51,116 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 05:00:51,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 05:00:51 BasicIcfg [2022-01-19 05:00:51,118 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 05:00:51,120 INFO L158 Benchmark]: Toolchain (without parser) took 3339.43ms. Allocated memory is still 408.9MB. Free memory was 353.2MB in the beginning and 338.4MB in the end (delta: 14.9MB). Peak memory consumption was 15.5MB. Max. memory is 16.0GB. [2022-01-19 05:00:51,121 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 408.9MB. Free memory is still 371.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 05:00:51,125 INFO L158 Benchmark]: CACSL2BoogieTranslator took 539.50ms. Allocated memory is still 408.9MB. Free memory was 353.1MB in the beginning and 370.6MB in the end (delta: -17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2022-01-19 05:00:51,125 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.49ms. Allocated memory is still 408.9MB. Free memory was 370.6MB in the beginning and 368.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 05:00:51,125 INFO L158 Benchmark]: Boogie Preprocessor took 32.15ms. Allocated memory is still 408.9MB. Free memory was 368.5MB in the beginning and 367.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 05:00:51,125 INFO L158 Benchmark]: RCFGBuilder took 264.15ms. Allocated memory is still 408.9MB. Free memory was 367.4MB in the beginning and 353.8MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-19 05:00:51,125 INFO L158 Benchmark]: TraceAbstraction took 2414.17ms. Allocated memory is still 408.9MB. Free memory was 352.7MB in the beginning and 338.4MB in the end (delta: 14.4MB). Peak memory consumption was 15.4MB. Max. memory is 16.0GB. [2022-01-19 05:00:51,126 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 408.9MB. Free memory is still 371.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 539.50ms. Allocated memory is still 408.9MB. Free memory was 353.1MB in the beginning and 370.6MB in the end (delta: -17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 76.49ms. Allocated memory is still 408.9MB. Free memory was 370.6MB in the beginning and 368.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.15ms. Allocated memory is still 408.9MB. Free memory was 368.5MB in the beginning and 367.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 264.15ms. Allocated memory is still 408.9MB. Free memory was 367.4MB in the beginning and 353.8MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 2414.17ms. Allocated memory is still 408.9MB. Free memory was 352.7MB in the beginning and 338.4MB in the end (delta: 14.4MB). Peak memory consumption was 15.4MB. 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, 113 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: 2.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 162 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 162 mSDsluCounter, 229 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 271 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 395 IncrementalHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 52 mSDtfsCounter, 395 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=4, InterpolantAutomatonStates: 65, 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, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 425 NumberOfCodeBlocks, 425 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 418 ConstructedInterpolants, 0 QuantifiedInterpolants, 1390 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 05:00:51,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...