/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-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 11:21:05,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 11:21:05,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 11:21:05,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 11:21:05,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 11:21:05,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 11:21:05,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 11:21:05,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 11:21:05,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 11:21:05,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 11:21:05,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 11:21:05,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 11:21:05,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 11:21:05,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 11:21:05,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 11:21:05,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 11:21:05,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 11:21:05,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 11:21:05,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 11:21:05,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 11:21:05,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 11:21:05,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 11:21:05,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 11:21:05,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 11:21:05,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 11:21:05,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 11:21:05,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 11:21:05,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 11:21:05,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 11:21:05,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 11:21:05,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 11:21:05,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 11:21:05,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 11:21:05,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 11:21:05,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 11:21:05,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 11:21:05,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 11:21:05,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 11:21:05,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 11:21:05,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 11:21:05,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 11:21:05,672 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-After.epf [2022-01-19 11:21:05,700 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 11:21:05,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 11:21:05,701 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 11:21:05,701 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 11:21:05,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 11:21:05,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 11:21:05,702 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 11:21:05,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 11:21:05,702 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 11:21:05,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 11:21:05,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 11:21:05,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 11:21:05,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 11:21:05,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 11:21:05,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 11:21:05,704 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 11:21:05,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 11:21:05,704 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 11:21:05,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 11:21:05,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 11:21:05,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 11:21:05,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 11:21:05,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 11:21:05,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 11:21:05,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 11:21:05,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 11:21:05,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 11:21:05,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 11:21:05,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 11:21:05,706 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 11:21:05,706 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 11:21:05,706 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 11:21:05,706 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 11:21:05,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 11:21:05,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 11:21:05,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 11:21:05,977 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 11:21:05,977 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 11:21:05,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.i [2022-01-19 11:21:06,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89c9df9fe/64322d48687240a59b648b32902ecb0b/FLAG7d79a5bd6 [2022-01-19 11:21:06,423 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 11:21:06,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.i [2022-01-19 11:21:06,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89c9df9fe/64322d48687240a59b648b32902ecb0b/FLAG7d79a5bd6 [2022-01-19 11:21:06,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89c9df9fe/64322d48687240a59b648b32902ecb0b [2022-01-19 11:21:06,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 11:21:06,822 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 11:21:06,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 11:21:06,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 11:21:06,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 11:21:06,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 11:21:06" (1/1) ... [2022-01-19 11:21:06,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6562de62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:06, skipping insertion in model container [2022-01-19 11:21:06,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 11:21:06" (1/1) ... [2022-01-19 11:21:06,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 11:21:06,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 11:21:07,095 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/safe023_tso.i[945,958] [2022-01-19 11:21:07,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 11:21:07,266 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 11:21:07,276 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/safe023_tso.i[945,958] [2022-01-19 11:21:07,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 11:21:07,352 INFO L208 MainTranslator]: Completed translation [2022-01-19 11:21:07,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:07 WrapperNode [2022-01-19 11:21:07,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 11:21:07,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 11:21:07,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 11:21:07,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 11:21:07,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:07" (1/1) ... [2022-01-19 11:21:07,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:07" (1/1) ... [2022-01-19 11:21:07,403 INFO L137 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-01-19 11:21:07,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 11:21:07,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 11:21:07,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 11:21:07,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 11:21:07,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:07" (1/1) ... [2022-01-19 11:21:07,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:07" (1/1) ... [2022-01-19 11:21:07,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:07" (1/1) ... [2022-01-19 11:21:07,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:07" (1/1) ... [2022-01-19 11:21:07,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:07" (1/1) ... [2022-01-19 11:21:07,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:07" (1/1) ... [2022-01-19 11:21:07,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:07" (1/1) ... [2022-01-19 11:21:07,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 11:21:07,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 11:21:07,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 11:21:07,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 11:21:07,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:07" (1/1) ... [2022-01-19 11:21:07,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 11:21:07,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 11:21:07,472 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 11:21:07,486 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 11:21:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 11:21:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 11:21:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 11:21:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 11:21:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 11:21:07,512 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-19 11:21:07,512 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-19 11:21:07,512 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-19 11:21:07,512 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-19 11:21:07,513 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-19 11:21:07,513 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-19 11:21:07,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 11:21:07,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 11:21:07,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 11:21:07,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 11:21:07,515 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 11:21:07,604 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 11:21:07,606 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 11:21:07,740 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 11:21:07,745 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 11:21:07,745 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 11:21:07,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 11:21:07 BoogieIcfgContainer [2022-01-19 11:21:07,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 11:21:07,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 11:21:07,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 11:21:07,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 11:21:07,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 11:21:06" (1/3) ... [2022-01-19 11:21:07,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aefdea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 11:21:07, skipping insertion in model container [2022-01-19 11:21:07,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:07" (2/3) ... [2022-01-19 11:21:07,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aefdea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 11:21:07, skipping insertion in model container [2022-01-19 11:21:07,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 11:21:07" (3/3) ... [2022-01-19 11:21:07,755 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.i [2022-01-19 11:21:07,759 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 11:21:07,759 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 11:21:07,759 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 11:21:07,810 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,811 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,811 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,811 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,811 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,811 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,811 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,811 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,812 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,812 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,813 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,813 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,813 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,813 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,813 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,814 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,814 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,814 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,814 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,814 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,815 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,815 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,815 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,816 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,816 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,816 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,816 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,816 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,817 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,817 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,817 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,817 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,818 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,818 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,818 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,819 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,821 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,822 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,822 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,822 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,824 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,825 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,825 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,825 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,826 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,826 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,826 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,827 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:07,827 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 11:21:07,863 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 11:21:07,869 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 11:21:07,869 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 11:21:07,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-01-19 11:21:07,915 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2022-01-19 11:21:07,915 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 11:21:07,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-01-19 11:21:07,919 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-01-19 11:21:07,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-01-19 11:21:07,946 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2022-01-19 11:21:07,946 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 11:21:07,946 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:21:07,947 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 11:21:07,947 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 11:21:07,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:21:07,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1011825075, now seen corresponding path program 1 times [2022-01-19 11:21:07,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:21:07,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536385407] [2022-01-19 11:21:07,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:21:07,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:21:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:21:08,441 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 11:21:08,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:21:08,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536385407] [2022-01-19 11:21:08,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536385407] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:21:08,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:21:08,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:21:08,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870787921] [2022-01-19 11:21:08,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:21:08,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:21:08,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:21:08,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:21:08,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:21:08,494 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-01-19 11:21:08,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 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 11:21:08,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:21:08,500 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-01-19 11:21:08,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:21:08,895 INFO L129 PetriNetUnfolder]: 192/552 cut-off events. [2022-01-19 11:21:08,895 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-01-19 11:21:08,897 INFO L84 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 552 events. 192/552 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2675 event pairs, 24 based on Foata normal form. 27/555 useless extension candidates. Maximal degree in co-relation 888. Up to 64 conditions per place. [2022-01-19 11:21:08,900 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 26 selfloop transitions, 5 changer transitions 44/131 dead transitions. [2022-01-19 11:21:08,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 131 transitions, 430 flow [2022-01-19 11:21:08,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 11:21:08,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 11:21:08,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 991 transitions. [2022-01-19 11:21:08,914 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8285953177257525 [2022-01-19 11:21:08,915 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 991 transitions. [2022-01-19 11:21:08,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 991 transitions. [2022-01-19 11:21:08,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:21:08,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 991 transitions. [2022-01-19 11:21:08,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.23076923076923) internal successors, (991), 13 states have internal predecessors, (991), 0 states have call successors, (0), 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 11:21:08,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:21:08,932 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:21:08,933 INFO L186 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 13 states and 991 transitions. [2022-01-19 11:21:08,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 131 transitions, 430 flow [2022-01-19 11:21:08,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 131 transitions, 424 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 11:21:08,939 INFO L242 Difference]: Finished difference. Result has 105 places, 77 transitions, 226 flow [2022-01-19 11:21:08,940 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=226, PETRI_PLACES=105, PETRI_TRANSITIONS=77} [2022-01-19 11:21:08,943 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 21 predicate places. [2022-01-19 11:21:08,943 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 77 transitions, 226 flow [2022-01-19 11:21:08,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 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 11:21:08,944 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:21:08,944 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 11:21:08,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 11:21:08,944 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 11:21:08,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:21:08,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1090711155, now seen corresponding path program 1 times [2022-01-19 11:21:08,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:21:08,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927463555] [2022-01-19 11:21:08,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:21:08,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:21:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:21:09,046 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 11:21:09,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:21:09,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927463555] [2022-01-19 11:21:09,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927463555] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:21:09,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:21:09,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 11:21:09,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328409926] [2022-01-19 11:21:09,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:21:09,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 11:21:09,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:21:09,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 11:21:09,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 11:21:09,050 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 92 [2022-01-19 11:21:09,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 77 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:21:09,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:21:09,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 92 [2022-01-19 11:21:09,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:21:09,174 INFO L129 PetriNetUnfolder]: 13/157 cut-off events. [2022-01-19 11:21:09,175 INFO L130 PetriNetUnfolder]: For 224/296 co-relation queries the response was YES. [2022-01-19 11:21:09,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 157 events. 13/157 cut-off events. For 224/296 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 476 event pairs, 7 based on Foata normal form. 10/160 useless extension candidates. Maximal degree in co-relation 310. Up to 26 conditions per place. [2022-01-19 11:21:09,178 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 9 selfloop transitions, 3 changer transitions 10/87 dead transitions. [2022-01-19 11:21:09,178 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 87 transitions, 342 flow [2022-01-19 11:21:09,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 11:21:09,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 11:21:09,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 716 transitions. [2022-01-19 11:21:09,181 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8647342995169082 [2022-01-19 11:21:09,181 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 716 transitions. [2022-01-19 11:21:09,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 716 transitions. [2022-01-19 11:21:09,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:21:09,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 716 transitions. [2022-01-19 11:21:09,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.55555555555556) internal successors, (716), 9 states have internal predecessors, (716), 0 states have call successors, (0), 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 11:21:09,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:21:09,185 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:21:09,185 INFO L186 Difference]: Start difference. First operand has 105 places, 77 transitions, 226 flow. Second operand 9 states and 716 transitions. [2022-01-19 11:21:09,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 87 transitions, 342 flow [2022-01-19 11:21:09,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 87 transitions, 312 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-01-19 11:21:09,191 INFO L242 Difference]: Finished difference. Result has 107 places, 77 transitions, 235 flow [2022-01-19 11:21:09,191 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=235, PETRI_PLACES=107, PETRI_TRANSITIONS=77} [2022-01-19 11:21:09,192 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 23 predicate places. [2022-01-19 11:21:09,192 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 77 transitions, 235 flow [2022-01-19 11:21:09,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:21:09,192 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:21:09,192 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 11:21:09,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 11:21:09,193 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 11:21:09,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:21:09,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1443416475, now seen corresponding path program 1 times [2022-01-19 11:21:09,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:21:09,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384614053] [2022-01-19 11:21:09,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:21:09,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:21:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:21:09,300 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 11:21:09,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:21:09,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384614053] [2022-01-19 11:21:09,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384614053] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:21:09,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:21:09,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:21:09,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071213365] [2022-01-19 11:21:09,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:21:09,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:21:09,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:21:09,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:21:09,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:21:09,305 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 92 [2022-01-19 11:21:09,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 77 transitions, 235 flow. Second operand has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 0 states have call successors, (0), 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 11:21:09,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:21:09,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 92 [2022-01-19 11:21:09,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:21:09,644 INFO L129 PetriNetUnfolder]: 120/486 cut-off events. [2022-01-19 11:21:09,645 INFO L130 PetriNetUnfolder]: For 756/1326 co-relation queries the response was YES. [2022-01-19 11:21:09,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 486 events. 120/486 cut-off events. For 756/1326 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2657 event pairs, 11 based on Foata normal form. 10/481 useless extension candidates. Maximal degree in co-relation 1183. Up to 62 conditions per place. [2022-01-19 11:21:09,649 INFO L132 encePairwiseOnDemand]: 78/92 looper letters, 34 selfloop transitions, 15 changer transitions 45/148 dead transitions. [2022-01-19 11:21:09,649 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 148 transitions, 860 flow [2022-01-19 11:21:09,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 11:21:09,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 11:21:09,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1244 transitions. [2022-01-19 11:21:09,652 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7953964194373402 [2022-01-19 11:21:09,652 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1244 transitions. [2022-01-19 11:21:09,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1244 transitions. [2022-01-19 11:21:09,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:21:09,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1244 transitions. [2022-01-19 11:21:09,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 73.17647058823529) internal successors, (1244), 17 states have internal predecessors, (1244), 0 states have call successors, (0), 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 11:21:09,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 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 11:21:09,659 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 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 11:21:09,659 INFO L186 Difference]: Start difference. First operand has 107 places, 77 transitions, 235 flow. Second operand 17 states and 1244 transitions. [2022-01-19 11:21:09,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 148 transitions, 860 flow [2022-01-19 11:21:09,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 148 transitions, 742 flow, removed 52 selfloop flow, removed 11 redundant places. [2022-01-19 11:21:09,668 INFO L242 Difference]: Finished difference. Result has 122 places, 85 transitions, 352 flow [2022-01-19 11:21:09,669 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=352, PETRI_PLACES=122, PETRI_TRANSITIONS=85} [2022-01-19 11:21:09,670 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 38 predicate places. [2022-01-19 11:21:09,671 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 85 transitions, 352 flow [2022-01-19 11:21:09,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 0 states have call successors, (0), 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 11:21:09,671 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:21:09,671 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 11:21:09,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 11:21:09,672 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 11:21:09,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:21:09,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1615688216, now seen corresponding path program 1 times [2022-01-19 11:21:09,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:21:09,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81518221] [2022-01-19 11:21:09,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:21:09,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:21:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:21:09,846 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 11:21:09,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:21:09,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81518221] [2022-01-19 11:21:09,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81518221] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:21:09,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:21:09,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 11:21:09,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268049092] [2022-01-19 11:21:09,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:21:09,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 11:21:09,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:21:09,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 11:21:09,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-19 11:21:09,854 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 92 [2022-01-19 11:21:09,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 85 transitions, 352 flow. Second operand has 8 states, 8 states have (on average 70.25) internal successors, (562), 8 states have internal predecessors, (562), 0 states have call successors, (0), 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 11:21:09,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:21:09,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 92 [2022-01-19 11:21:09,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:21:10,053 INFO L129 PetriNetUnfolder]: 69/364 cut-off events. [2022-01-19 11:21:10,053 INFO L130 PetriNetUnfolder]: For 976/1497 co-relation queries the response was YES. [2022-01-19 11:21:10,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 364 events. 69/364 cut-off events. For 976/1497 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1853 event pairs, 16 based on Foata normal form. 12/357 useless extension candidates. Maximal degree in co-relation 1079. Up to 65 conditions per place. [2022-01-19 11:21:10,056 INFO L132 encePairwiseOnDemand]: 80/92 looper letters, 25 selfloop transitions, 8 changer transitions 31/118 dead transitions. [2022-01-19 11:21:10,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 118 transitions, 768 flow [2022-01-19 11:21:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 11:21:10,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 11:21:10,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 801 transitions. [2022-01-19 11:21:10,061 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.791501976284585 [2022-01-19 11:21:10,061 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 801 transitions. [2022-01-19 11:21:10,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 801 transitions. [2022-01-19 11:21:10,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:21:10,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 801 transitions. [2022-01-19 11:21:10,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 72.81818181818181) internal successors, (801), 11 states have internal predecessors, (801), 0 states have call successors, (0), 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 11:21:10,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 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 11:21:10,066 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 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 11:21:10,067 INFO L186 Difference]: Start difference. First operand has 122 places, 85 transitions, 352 flow. Second operand 11 states and 801 transitions. [2022-01-19 11:21:10,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 118 transitions, 768 flow [2022-01-19 11:21:10,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 118 transitions, 668 flow, removed 50 selfloop flow, removed 12 redundant places. [2022-01-19 11:21:10,075 INFO L242 Difference]: Finished difference. Result has 117 places, 81 transitions, 336 flow [2022-01-19 11:21:10,076 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=336, PETRI_PLACES=117, PETRI_TRANSITIONS=81} [2022-01-19 11:21:10,077 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 33 predicate places. [2022-01-19 11:21:10,077 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 81 transitions, 336 flow [2022-01-19 11:21:10,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.25) internal successors, (562), 8 states have internal predecessors, (562), 0 states have call successors, (0), 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 11:21:10,077 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:21:10,078 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 11:21:10,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 11:21:10,078 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 11:21:10,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:21:10,080 INFO L85 PathProgramCache]: Analyzing trace with hash 58466002, now seen corresponding path program 1 times [2022-01-19 11:21:10,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:21:10,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569904798] [2022-01-19 11:21:10,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:21:10,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:21:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:21:10,181 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 11:21:10,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:21:10,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569904798] [2022-01-19 11:21:10,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569904798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:21:10,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:21:10,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 11:21:10,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7304881] [2022-01-19 11:21:10,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:21:10,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 11:21:10,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:21:10,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 11:21:10,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 11:21:10,184 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 11:21:10,185 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 81 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:21:10,185 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:21:10,185 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 11:21:10,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:21:10,312 INFO L129 PetriNetUnfolder]: 168/545 cut-off events. [2022-01-19 11:21:10,312 INFO L130 PetriNetUnfolder]: For 400/491 co-relation queries the response was YES. [2022-01-19 11:21:10,315 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 545 events. 168/545 cut-off events. For 400/491 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3326 event pairs, 17 based on Foata normal form. 1/497 useless extension candidates. Maximal degree in co-relation 1060. Up to 121 conditions per place. [2022-01-19 11:21:10,316 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 25 selfloop transitions, 14 changer transitions 7/113 dead transitions. [2022-01-19 11:21:10,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 113 transitions, 496 flow [2022-01-19 11:21:10,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 11:21:10,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 11:21:10,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 798 transitions. [2022-01-19 11:21:10,319 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8673913043478261 [2022-01-19 11:21:10,319 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 798 transitions. [2022-01-19 11:21:10,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 798 transitions. [2022-01-19 11:21:10,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:21:10,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 798 transitions. [2022-01-19 11:21:10,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.8) internal successors, (798), 10 states have internal predecessors, (798), 0 states have call successors, (0), 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 11:21:10,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:21:10,323 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:21:10,323 INFO L186 Difference]: Start difference. First operand has 117 places, 81 transitions, 336 flow. Second operand 10 states and 798 transitions. [2022-01-19 11:21:10,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 113 transitions, 496 flow [2022-01-19 11:21:10,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 113 transitions, 437 flow, removed 15 selfloop flow, removed 16 redundant places. [2022-01-19 11:21:10,327 INFO L242 Difference]: Finished difference. Result has 110 places, 93 transitions, 380 flow [2022-01-19 11:21:10,327 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=380, PETRI_PLACES=110, PETRI_TRANSITIONS=93} [2022-01-19 11:21:10,328 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 26 predicate places. [2022-01-19 11:21:10,328 INFO L470 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 380 flow [2022-01-19 11:21:10,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:21:10,329 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:21:10,329 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 11:21:10,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 11:21:10,329 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 11:21:10,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:21:10,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1928606749, now seen corresponding path program 1 times [2022-01-19 11:21:10,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:21:10,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030674569] [2022-01-19 11:21:10,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:21:10,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:21:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:21:10,425 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 11:21:10,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:21:10,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030674569] [2022-01-19 11:21:10,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030674569] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:21:10,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:21:10,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:21:10,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744516486] [2022-01-19 11:21:10,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:21:10,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:21:10,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:21:10,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:21:10,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:21:10,428 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 11:21:10,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 93 transitions, 380 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:21:10,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:21:10,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 11:21:10,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:21:10,617 INFO L129 PetriNetUnfolder]: 148/521 cut-off events. [2022-01-19 11:21:10,617 INFO L130 PetriNetUnfolder]: For 1038/1132 co-relation queries the response was YES. [2022-01-19 11:21:10,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1628 conditions, 521 events. 148/521 cut-off events. For 1038/1132 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3361 event pairs, 0 based on Foata normal form. 19/501 useless extension candidates. Maximal degree in co-relation 1570. Up to 146 conditions per place. [2022-01-19 11:21:10,622 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 21 selfloop transitions, 26 changer transitions 17/131 dead transitions. [2022-01-19 11:21:10,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 131 transitions, 744 flow [2022-01-19 11:21:10,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 11:21:10,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 11:21:10,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1035 transitions. [2022-01-19 11:21:10,625 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8653846153846154 [2022-01-19 11:21:10,625 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1035 transitions. [2022-01-19 11:21:10,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1035 transitions. [2022-01-19 11:21:10,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:21:10,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1035 transitions. [2022-01-19 11:21:10,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.61538461538461) internal successors, (1035), 13 states have internal predecessors, (1035), 0 states have call successors, (0), 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 11:21:10,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:21:10,630 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:21:10,630 INFO L186 Difference]: Start difference. First operand has 110 places, 93 transitions, 380 flow. Second operand 13 states and 1035 transitions. [2022-01-19 11:21:10,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 131 transitions, 744 flow [2022-01-19 11:21:10,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 131 transitions, 736 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-01-19 11:21:10,638 INFO L242 Difference]: Finished difference. Result has 126 places, 105 transitions, 543 flow [2022-01-19 11:21:10,638 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=543, PETRI_PLACES=126, PETRI_TRANSITIONS=105} [2022-01-19 11:21:10,638 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 42 predicate places. [2022-01-19 11:21:10,639 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 105 transitions, 543 flow [2022-01-19 11:21:10,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:21:10,639 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:21:10,639 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 11:21:10,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 11:21:10,640 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 11:21:10,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:21:10,640 INFO L85 PathProgramCache]: Analyzing trace with hash -366721664, now seen corresponding path program 1 times [2022-01-19 11:21:10,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:21:10,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061430294] [2022-01-19 11:21:10,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:21:10,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:21:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:21:10,745 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 11:21:10,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:21:10,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061430294] [2022-01-19 11:21:10,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061430294] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:21:10,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:21:10,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 11:21:10,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530118904] [2022-01-19 11:21:10,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:21:10,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 11:21:10,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:21:10,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 11:21:10,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-19 11:21:10,751 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 11:21:10,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 105 transitions, 543 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:21:10,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:21:10,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 11:21:10,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:21:10,949 INFO L129 PetriNetUnfolder]: 94/380 cut-off events. [2022-01-19 11:21:10,949 INFO L130 PetriNetUnfolder]: For 1551/1700 co-relation queries the response was YES. [2022-01-19 11:21:10,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1469 conditions, 380 events. 94/380 cut-off events. For 1551/1700 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2373 event pairs, 0 based on Foata normal form. 14/357 useless extension candidates. Maximal degree in co-relation 1404. Up to 88 conditions per place. [2022-01-19 11:21:10,953 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 0 selfloop transitions, 0 changer transitions 123/123 dead transitions. [2022-01-19 11:21:10,953 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 123 transitions, 803 flow [2022-01-19 11:21:10,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 11:21:10,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 11:21:10,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1250 transitions. [2022-01-19 11:21:10,956 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8491847826086957 [2022-01-19 11:21:10,956 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1250 transitions. [2022-01-19 11:21:10,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1250 transitions. [2022-01-19 11:21:10,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:21:10,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1250 transitions. [2022-01-19 11:21:10,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 78.125) internal successors, (1250), 16 states have internal predecessors, (1250), 0 states have call successors, (0), 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 11:21:10,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:21:10,965 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:21:10,965 INFO L186 Difference]: Start difference. First operand has 126 places, 105 transitions, 543 flow. Second operand 16 states and 1250 transitions. [2022-01-19 11:21:10,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 123 transitions, 803 flow [2022-01-19 11:21:10,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 123 transitions, 739 flow, removed 24 selfloop flow, removed 5 redundant places. [2022-01-19 11:21:10,974 INFO L242 Difference]: Finished difference. Result has 129 places, 0 transitions, 0 flow [2022-01-19 11:21:10,974 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=129, PETRI_TRANSITIONS=0} [2022-01-19 11:21:10,975 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 45 predicate places. [2022-01-19 11:21:10,975 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 0 transitions, 0 flow [2022-01-19 11:21:10,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:21:10,977 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 11:21:10,978 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 11:21:10,978 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 11:21:10,978 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 11:21:10,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 11:21:10,981 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-01-19 11:21:10,983 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 11:21:10,983 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 11:21:10,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 11:21:10 BasicIcfg [2022-01-19 11:21:10,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 11:21:10,987 INFO L158 Benchmark]: Toolchain (without parser) took 4164.26ms. Allocated memory was 343.9MB in the beginning and 492.8MB in the end (delta: 148.9MB). Free memory was 286.1MB in the beginning and 287.5MB in the end (delta: -1.4MB). Peak memory consumption was 148.4MB. Max. memory is 16.0GB. [2022-01-19 11:21:10,991 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 343.9MB. Free memory was 303.6MB in the beginning and 303.5MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 11:21:10,991 INFO L158 Benchmark]: CACSL2BoogieTranslator took 527.81ms. Allocated memory was 343.9MB in the beginning and 492.8MB in the end (delta: 148.9MB). Free memory was 285.9MB in the beginning and 453.9MB in the end (delta: -168.0MB). Peak memory consumption was 14.4MB. Max. memory is 16.0GB. [2022-01-19 11:21:10,992 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.65ms. Allocated memory is still 492.8MB. Free memory was 453.9MB in the beginning and 451.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 11:21:10,992 INFO L158 Benchmark]: Boogie Preprocessor took 30.85ms. Allocated memory is still 492.8MB. Free memory was 451.8MB in the beginning and 450.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 11:21:10,992 INFO L158 Benchmark]: RCFGBuilder took 311.50ms. Allocated memory is still 492.8MB. Free memory was 450.2MB in the beginning and 437.7MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-19 11:21:10,992 INFO L158 Benchmark]: TraceAbstraction took 3237.74ms. Allocated memory is still 492.8MB. Free memory was 437.1MB in the beginning and 287.5MB in the end (delta: 149.6MB). Peak memory consumption was 151.7MB. Max. memory is 16.0GB. [2022-01-19 11:21:10,994 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 343.9MB. Free memory was 303.6MB in the beginning and 303.5MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 527.81ms. Allocated memory was 343.9MB in the beginning and 492.8MB in the end (delta: 148.9MB). Free memory was 285.9MB in the beginning and 453.9MB in the end (delta: -168.0MB). Peak memory consumption was 14.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.65ms. Allocated memory is still 492.8MB. Free memory was 453.9MB in the beginning and 451.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.85ms. Allocated memory is still 492.8MB. Free memory was 451.8MB in the beginning and 450.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 311.50ms. Allocated memory is still 492.8MB. Free memory was 450.2MB in the beginning and 437.7MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3237.74ms. Allocated memory is still 492.8MB. Free memory was 437.1MB in the beginning and 287.5MB in the end (delta: 149.6MB). Peak memory consumption was 151.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.1s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 340 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 340 mSDsluCounter, 392 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 381 mSDsCounter, 87 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 440 IncrementalHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 87 mSolverCounterUnsat, 90 mSDtfsCounter, 440 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=543occurred in iteration=6, InterpolantAutomatonStates: 89, 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, 0.8s InterpolantComputationTime, 429 NumberOfCodeBlocks, 429 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 422 ConstructedInterpolants, 0 QuantifiedInterpolants, 1992 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 11:21:11,034 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...