/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 06:58:49,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 06:58:49,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 06:58:49,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 06:58:49,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 06:58:49,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 06:58:49,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 06:58:49,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 06:58:49,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 06:58:49,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 06:58:49,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 06:58:49,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 06:58:49,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 06:58:49,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 06:58:49,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 06:58:49,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 06:58:49,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 06:58:49,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 06:58:49,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 06:58:49,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 06:58:49,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 06:58:49,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 06:58:49,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 06:58:49,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 06:58:49,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 06:58:49,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 06:58:49,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 06:58:49,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 06:58:49,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 06:58:49,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 06:58:49,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 06:58:49,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 06:58:49,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 06:58:49,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 06:58:49,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 06:58:49,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 06:58:49,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 06:58:49,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 06:58:49,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 06:58:49,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 06:58:49,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 06:58:49,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 06:58:49,341 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 06:58:49,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 06:58:49,342 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 06:58:49,342 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 06:58:49,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 06:58:49,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 06:58:49,343 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 06:58:49,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 06:58:49,343 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 06:58:49,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 06:58:49,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 06:58:49,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 06:58:49,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 06:58:49,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 06:58:49,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 06:58:49,345 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 06:58:49,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 06:58:49,345 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 06:58:49,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 06:58:49,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 06:58:49,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 06:58:49,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 06:58:49,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 06:58:49,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:58:49,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 06:58:49,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 06:58:49,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 06:58:49,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 06:58:49,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 06:58:49,347 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 06:58:49,347 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 06:58:49,347 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 06:58:49,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 06:58:49,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 06:58:49,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 06:58:49,601 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 06:58:49,602 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 06:58:49,603 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2023-01-28 06:58:50,781 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 06:58:51,037 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 06:58:51,037 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2023-01-28 06:58:51,048 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f972ae91/789af011a9b14b56838c86b5f5a43bf9/FLAGe1d6eadd5 [2023-01-28 06:58:51,059 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f972ae91/789af011a9b14b56838c86b5f5a43bf9 [2023-01-28 06:58:51,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 06:58:51,062 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 06:58:51,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 06:58:51,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 06:58:51,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 06:58:51,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:58:51" (1/1) ... [2023-01-28 06:58:51,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74d7ecd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:51, skipping insertion in model container [2023-01-28 06:58:51,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:58:51" (1/1) ... [2023-01-28 06:58:51,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 06:58:51,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 06:58:51,250 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i[987,1000] [2023-01-28 06:58:51,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:58:51,482 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 06:58:51,491 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i[987,1000] [2023-01-28 06:58:51,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:58:51,606 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 06:58:51,606 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 06:58:51,613 INFO L208 MainTranslator]: Completed translation [2023-01-28 06:58:51,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:51 WrapperNode [2023-01-28 06:58:51,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 06:58:51,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 06:58:51,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 06:58:51,615 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 06:58:51,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:51" (1/1) ... [2023-01-28 06:58:51,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:51" (1/1) ... [2023-01-28 06:58:51,690 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 209 [2023-01-28 06:58:51,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 06:58:51,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 06:58:51,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 06:58:51,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 06:58:51,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:51" (1/1) ... [2023-01-28 06:58:51,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:51" (1/1) ... [2023-01-28 06:58:51,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:51" (1/1) ... [2023-01-28 06:58:51,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:51" (1/1) ... [2023-01-28 06:58:51,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:51" (1/1) ... [2023-01-28 06:58:51,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:51" (1/1) ... [2023-01-28 06:58:51,744 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:51" (1/1) ... [2023-01-28 06:58:51,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:51" (1/1) ... [2023-01-28 06:58:51,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 06:58:51,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 06:58:51,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 06:58:51,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 06:58:51,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:51" (1/1) ... [2023-01-28 06:58:51,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:58:51,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:58:51,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 06:58:51,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 06:58:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 06:58:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 06:58:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 06:58:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 06:58:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 06:58:51,824 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 06:58:51,824 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 06:58:51,824 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 06:58:51,824 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 06:58:51,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 06:58:51,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 06:58:51,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 06:58:51,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 06:58:51,826 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 06:58:51,948 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 06:58:51,950 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 06:58:52,382 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 06:58:52,585 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 06:58:52,585 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 06:58:52,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:58:52 BoogieIcfgContainer [2023-01-28 06:58:52,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 06:58:52,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 06:58:52,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 06:58:52,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 06:58:52,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 06:58:51" (1/3) ... [2023-01-28 06:58:52,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5eb563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:58:52, skipping insertion in model container [2023-01-28 06:58:52,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:51" (2/3) ... [2023-01-28 06:58:52,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5eb563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:58:52, skipping insertion in model container [2023-01-28 06:58:52,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:58:52" (3/3) ... [2023-01-28 06:58:52,594 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2023-01-28 06:58:52,609 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 06:58:52,609 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-01-28 06:58:52,610 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 06:58:52,666 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 06:58:52,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 107 transitions, 224 flow [2023-01-28 06:58:52,766 INFO L130 PetriNetUnfolder]: 2/105 cut-off events. [2023-01-28 06:58:52,766 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 06:58:52,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 105 events. 2/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-01-28 06:58:52,771 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 107 transitions, 224 flow [2023-01-28 06:58:52,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 105 transitions, 216 flow [2023-01-28 06:58:52,779 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 06:58:52,804 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 105 transitions, 216 flow [2023-01-28 06:58:52,808 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 105 transitions, 216 flow [2023-01-28 06:58:52,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 105 transitions, 216 flow [2023-01-28 06:58:52,849 INFO L130 PetriNetUnfolder]: 2/105 cut-off events. [2023-01-28 06:58:52,849 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 06:58:52,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 105 events. 2/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-01-28 06:58:52,852 INFO L119 LiptonReduction]: Number of co-enabled transitions 1314 [2023-01-28 06:58:57,808 INFO L134 LiptonReduction]: Checked pairs total: 4349 [2023-01-28 06:58:57,808 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-01-28 06:58:57,820 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 06:58:57,826 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@38ca5f17, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 06:58:57,826 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-01-28 06:58:57,830 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-01-28 06:58:57,830 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 06:58:57,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:58:57,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-28 06:58:57,831 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 06:58:57,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:58:57,836 INFO L85 PathProgramCache]: Analyzing trace with hash 599221769, now seen corresponding path program 1 times [2023-01-28 06:58:57,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:58:57,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388817359] [2023-01-28 06:58:57,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:58:57,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:58:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:58:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:58:58,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:58:58,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388817359] [2023-01-28 06:58:58,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388817359] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:58:58,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:58:58,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 06:58:58,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23906501] [2023-01-28 06:58:58,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:58:58,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:58:58,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:58:58,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:58:58,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:58:58,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 203 [2023-01-28 06:58:58,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:58,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:58:58,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 203 [2023-01-28 06:58:58,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:58:58,578 INFO L130 PetriNetUnfolder]: 373/626 cut-off events. [2023-01-28 06:58:58,579 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 06:58:58,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 626 events. 373/626 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2526 event pairs, 30 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 1260. Up to 554 conditions per place. [2023-01-28 06:58:58,584 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 27 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-01-28 06:58:58,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 122 flow [2023-01-28 06:58:58,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:58:58,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:58:58,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-01-28 06:58:58,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876847290640394 [2023-01-28 06:58:58,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-01-28 06:58:58,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-01-28 06:58:58,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:58:58,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-01-28 06:58:58,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:58,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:58,608 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:58,610 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 48 flow. Second operand 3 states and 297 transitions. [2023-01-28 06:58:58,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 122 flow [2023-01-28 06:58:58,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 06:58:58,613 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 48 flow [2023-01-28 06:58:58,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-01-28 06:58:58,617 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-01-28 06:58:58,618 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 48 flow [2023-01-28 06:58:58,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:58,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:58:58,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-28 06:58:58,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 06:58:58,619 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 06:58:58,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:58:58,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1396006180, now seen corresponding path program 1 times [2023-01-28 06:58:58,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:58:58,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964506693] [2023-01-28 06:58:58,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:58:58,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:58:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:58:58,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:58:58,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:58:58,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964506693] [2023-01-28 06:58:58,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964506693] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:58:58,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:58:58,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 06:58:58,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292824145] [2023-01-28 06:58:58,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:58:58,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:58:58,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:58:58,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:58:58,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:58:58,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 203 [2023-01-28 06:58:58,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:58,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:58:58,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 203 [2023-01-28 06:58:58,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:58:58,869 INFO L130 PetriNetUnfolder]: 324/547 cut-off events. [2023-01-28 06:58:58,869 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-01-28 06:58:58,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 547 events. 324/547 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2057 event pairs, 79 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 1132. Up to 396 conditions per place. [2023-01-28 06:58:58,872 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 24 selfloop transitions, 2 changer transitions 2/28 dead transitions. [2023-01-28 06:58:58,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 120 flow [2023-01-28 06:58:58,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:58:58,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:58:58,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-01-28 06:58:58,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4860426929392447 [2023-01-28 06:58:58,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-01-28 06:58:58,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-01-28 06:58:58,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:58:58,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-01-28 06:58:58,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:58,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:58,883 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:58,883 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 48 flow. Second operand 3 states and 296 transitions. [2023-01-28 06:58:58,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 120 flow [2023-01-28 06:58:58,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 06:58:58,885 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 44 flow [2023-01-28 06:58:58,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-01-28 06:58:58,886 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -2 predicate places. [2023-01-28 06:58:58,887 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 44 flow [2023-01-28 06:58:58,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:58,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:58:58,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:58:58,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 06:58:58,888 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 06:58:58,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:58:58,890 INFO L85 PathProgramCache]: Analyzing trace with hash 326571041, now seen corresponding path program 1 times [2023-01-28 06:58:58,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:58:58,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048476143] [2023-01-28 06:58:58,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:58:58,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:58:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:58:59,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:58:59,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:58:59,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048476143] [2023-01-28 06:58:59,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048476143] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:58:59,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:58:59,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 06:58:59,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555224883] [2023-01-28 06:58:59,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:58:59,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 06:58:59,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:58:59,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 06:58:59,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 06:58:59,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 203 [2023-01-28 06:58:59,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:59,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:58:59,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 203 [2023-01-28 06:58:59,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:58:59,728 INFO L130 PetriNetUnfolder]: 220/383 cut-off events. [2023-01-28 06:58:59,729 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-01-28 06:58:59,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 383 events. 220/383 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1271 event pairs, 92 based on Foata normal form. 18/401 useless extension candidates. Maximal degree in co-relation 792. Up to 243 conditions per place. [2023-01-28 06:58:59,734 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-01-28 06:58:59,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 108 flow [2023-01-28 06:58:59,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:58:59,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:58:59,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2023-01-28 06:58:59,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318555008210181 [2023-01-28 06:58:59,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2023-01-28 06:58:59,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2023-01-28 06:58:59,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:58:59,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2023-01-28 06:58:59,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:59,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:59,739 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:59,739 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 44 flow. Second operand 3 states and 263 transitions. [2023-01-28 06:58:59,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 108 flow [2023-01-28 06:58:59,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 06:58:59,740 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 48 flow [2023-01-28 06:58:59,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-01-28 06:58:59,741 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -2 predicate places. [2023-01-28 06:58:59,745 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 48 flow [2023-01-28 06:58:59,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:59,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:58:59,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:58:59,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 06:58:59,746 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 06:58:59,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:58:59,746 INFO L85 PathProgramCache]: Analyzing trace with hash -705669376, now seen corresponding path program 1 times [2023-01-28 06:58:59,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:58:59,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141919248] [2023-01-28 06:58:59,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:58:59,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:58:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:59:00,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:59:00,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:59:00,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141919248] [2023-01-28 06:59:00,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141919248] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:59:00,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:59:00,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 06:59:00,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278758100] [2023-01-28 06:59:00,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:59:00,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:59:00,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:59:00,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:59:00,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:59:00,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 203 [2023-01-28 06:59:00,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:00,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:59:00,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 203 [2023-01-28 06:59:00,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:59:00,186 INFO L130 PetriNetUnfolder]: 199/350 cut-off events. [2023-01-28 06:59:00,186 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-01-28 06:59:00,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 350 events. 199/350 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1237 event pairs, 88 based on Foata normal form. 12/362 useless extension candidates. Maximal degree in co-relation 756. Up to 201 conditions per place. [2023-01-28 06:59:00,188 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 26 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-01-28 06:59:00,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 129 flow [2023-01-28 06:59:00,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:59:00,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:59:00,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-01-28 06:59:00,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4860426929392447 [2023-01-28 06:59:00,191 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-01-28 06:59:00,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-01-28 06:59:00,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:59:00,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-01-28 06:59:00,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:00,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:00,203 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:00,203 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 48 flow. Second operand 3 states and 296 transitions. [2023-01-28 06:59:00,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 129 flow [2023-01-28 06:59:00,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 123 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 06:59:00,206 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 52 flow [2023-01-28 06:59:00,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-01-28 06:59:00,207 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-01-28 06:59:00,207 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 52 flow [2023-01-28 06:59:00,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:00,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:59:00,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:59:00,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 06:59:00,209 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 06:59:00,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:59:00,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1604901205, now seen corresponding path program 1 times [2023-01-28 06:59:00,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:59:00,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676061429] [2023-01-28 06:59:00,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:59:00,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:59:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:59:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:59:01,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:59:01,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676061429] [2023-01-28 06:59:01,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676061429] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:59:01,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:59:01,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 06:59:01,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301924095] [2023-01-28 06:59:01,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:59:01,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 06:59:01,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:59:01,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 06:59:01,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 06:59:01,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 203 [2023-01-28 06:59:01,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 52 flow. Second operand has 8 states, 8 states have (on average 75.625) internal successors, (605), 8 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:01,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:59:01,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 203 [2023-01-28 06:59:01,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:59:02,198 INFO L130 PetriNetUnfolder]: 290/526 cut-off events. [2023-01-28 06:59:02,198 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2023-01-28 06:59:02,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1214 conditions, 526 events. 290/526 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2127 event pairs, 33 based on Foata normal form. 4/530 useless extension candidates. Maximal degree in co-relation 1202. Up to 240 conditions per place. [2023-01-28 06:59:02,201 INFO L137 encePairwiseOnDemand]: 191/203 looper letters, 53 selfloop transitions, 28 changer transitions 0/81 dead transitions. [2023-01-28 06:59:02,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 81 transitions, 363 flow [2023-01-28 06:59:02,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 06:59:02,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 06:59:02,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 896 transitions. [2023-01-28 06:59:02,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012539184952978 [2023-01-28 06:59:02,205 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 896 transitions. [2023-01-28 06:59:02,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 896 transitions. [2023-01-28 06:59:02,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:59:02,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 896 transitions. [2023-01-28 06:59:02,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 81.45454545454545) internal successors, (896), 11 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:02,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:02,213 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:02,213 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 52 flow. Second operand 11 states and 896 transitions. [2023-01-28 06:59:02,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 81 transitions, 363 flow [2023-01-28 06:59:02,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 81 transitions, 351 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 06:59:02,215 INFO L231 Difference]: Finished difference. Result has 42 places, 47 transitions, 253 flow [2023-01-28 06:59:02,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=253, PETRI_PLACES=42, PETRI_TRANSITIONS=47} [2023-01-28 06:59:02,216 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 14 predicate places. [2023-01-28 06:59:02,216 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 47 transitions, 253 flow [2023-01-28 06:59:02,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.625) internal successors, (605), 8 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:02,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:59:02,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:59:02,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 06:59:02,217 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 06:59:02,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:59:02,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1730083433, now seen corresponding path program 2 times [2023-01-28 06:59:02,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:59:02,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547552059] [2023-01-28 06:59:02,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:59:02,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:59:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:59:03,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:59:03,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:59:03,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547552059] [2023-01-28 06:59:03,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547552059] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:59:03,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:59:03,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 06:59:03,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162867496] [2023-01-28 06:59:03,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:59:03,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 06:59:03,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:59:03,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 06:59:03,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 06:59:03,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 203 [2023-01-28 06:59:03,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 47 transitions, 253 flow. Second operand has 7 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:03,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:59:03,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 203 [2023-01-28 06:59:03,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:59:03,746 INFO L130 PetriNetUnfolder]: 361/655 cut-off events. [2023-01-28 06:59:03,746 INFO L131 PetriNetUnfolder]: For 1039/1039 co-relation queries the response was YES. [2023-01-28 06:59:03,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2402 conditions, 655 events. 361/655 cut-off events. For 1039/1039 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2891 event pairs, 63 based on Foata normal form. 6/661 useless extension candidates. Maximal degree in co-relation 2383. Up to 502 conditions per place. [2023-01-28 06:59:03,752 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 66 selfloop transitions, 19 changer transitions 0/85 dead transitions. [2023-01-28 06:59:03,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 85 transitions, 617 flow [2023-01-28 06:59:03,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 06:59:03,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 06:59:03,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 455 transitions. [2023-01-28 06:59:03,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2023-01-28 06:59:03,755 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 455 transitions. [2023-01-28 06:59:03,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 455 transitions. [2023-01-28 06:59:03,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:59:03,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 455 transitions. [2023-01-28 06:59:03,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:03,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:03,760 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:03,760 INFO L175 Difference]: Start difference. First operand has 42 places, 47 transitions, 253 flow. Second operand 5 states and 455 transitions. [2023-01-28 06:59:03,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 85 transitions, 617 flow [2023-01-28 06:59:03,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 85 transitions, 617 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 06:59:03,769 INFO L231 Difference]: Finished difference. Result has 48 places, 62 transitions, 420 flow [2023-01-28 06:59:03,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=48, PETRI_TRANSITIONS=62} [2023-01-28 06:59:03,771 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 20 predicate places. [2023-01-28 06:59:03,771 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 62 transitions, 420 flow [2023-01-28 06:59:03,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:03,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:59:03,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:59:03,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 06:59:03,773 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 06:59:03,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:59:03,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1857559315, now seen corresponding path program 3 times [2023-01-28 06:59:03,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:59:03,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522051256] [2023-01-28 06:59:03,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:59:03,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:59:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:59:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:59:04,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:59:04,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522051256] [2023-01-28 06:59:04,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522051256] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:59:04,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:59:04,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 06:59:04,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070621878] [2023-01-28 06:59:04,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:59:04,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 06:59:04,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:59:04,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 06:59:04,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-28 06:59:04,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 203 [2023-01-28 06:59:04,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 62 transitions, 420 flow. Second operand has 8 states, 8 states have (on average 82.625) internal successors, (661), 8 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:04,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:59:04,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 203 [2023-01-28 06:59:04,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:59:05,014 INFO L130 PetriNetUnfolder]: 385/695 cut-off events. [2023-01-28 06:59:05,014 INFO L131 PetriNetUnfolder]: For 1529/1529 co-relation queries the response was YES. [2023-01-28 06:59:05,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2891 conditions, 695 events. 385/695 cut-off events. For 1529/1529 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3126 event pairs, 33 based on Foata normal form. 2/697 useless extension candidates. Maximal degree in co-relation 2868. Up to 464 conditions per place. [2023-01-28 06:59:05,020 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 71 selfloop transitions, 35 changer transitions 0/106 dead transitions. [2023-01-28 06:59:05,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 106 transitions, 881 flow [2023-01-28 06:59:05,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 06:59:05,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 06:59:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 533 transitions. [2023-01-28 06:59:05,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4376026272577997 [2023-01-28 06:59:05,023 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 533 transitions. [2023-01-28 06:59:05,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 533 transitions. [2023-01-28 06:59:05,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:59:05,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 533 transitions. [2023-01-28 06:59:05,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:05,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:05,048 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:05,048 INFO L175 Difference]: Start difference. First operand has 48 places, 62 transitions, 420 flow. Second operand 6 states and 533 transitions. [2023-01-28 06:59:05,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 106 transitions, 881 flow [2023-01-28 06:59:05,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 106 transitions, 862 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 06:59:05,056 INFO L231 Difference]: Finished difference. Result has 54 places, 76 transitions, 625 flow [2023-01-28 06:59:05,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=625, PETRI_PLACES=54, PETRI_TRANSITIONS=76} [2023-01-28 06:59:05,057 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 26 predicate places. [2023-01-28 06:59:05,057 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 76 transitions, 625 flow [2023-01-28 06:59:05,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 82.625) internal successors, (661), 8 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:05,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:59:05,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:59:05,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 06:59:05,058 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 06:59:05,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:59:05,059 INFO L85 PathProgramCache]: Analyzing trace with hash -134657145, now seen corresponding path program 4 times [2023-01-28 06:59:05,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:59:05,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341249796] [2023-01-28 06:59:05,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:59:05,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:59:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:59:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:59:06,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:59:06,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341249796] [2023-01-28 06:59:06,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341249796] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:59:06,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:59:06,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 06:59:06,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718661582] [2023-01-28 06:59:06,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:59:06,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 06:59:06,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:59:06,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 06:59:06,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 06:59:06,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 203 [2023-01-28 06:59:06,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 76 transitions, 625 flow. Second operand has 7 states, 7 states have (on average 80.85714285714286) internal successors, (566), 7 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:06,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:59:06,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 203 [2023-01-28 06:59:06,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:59:06,510 INFO L130 PetriNetUnfolder]: 457/828 cut-off events. [2023-01-28 06:59:06,511 INFO L131 PetriNetUnfolder]: For 2582/2582 co-relation queries the response was YES. [2023-01-28 06:59:06,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3802 conditions, 828 events. 457/828 cut-off events. For 2582/2582 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3957 event pairs, 131 based on Foata normal form. 6/834 useless extension candidates. Maximal degree in co-relation 3776. Up to 611 conditions per place. [2023-01-28 06:59:06,518 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 103 selfloop transitions, 27 changer transitions 0/130 dead transitions. [2023-01-28 06:59:06,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 130 transitions, 1227 flow [2023-01-28 06:59:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:59:06,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:59:06,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 604 transitions. [2023-01-28 06:59:06,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250527797325827 [2023-01-28 06:59:06,521 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 604 transitions. [2023-01-28 06:59:06,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 604 transitions. [2023-01-28 06:59:06,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:59:06,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 604 transitions. [2023-01-28 06:59:06,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.28571428571429) internal successors, (604), 7 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:06,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:06,525 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:06,526 INFO L175 Difference]: Start difference. First operand has 54 places, 76 transitions, 625 flow. Second operand 7 states and 604 transitions. [2023-01-28 06:59:06,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 130 transitions, 1227 flow [2023-01-28 06:59:06,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 130 transitions, 1210 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 06:59:06,537 INFO L231 Difference]: Finished difference. Result has 62 places, 86 transitions, 800 flow [2023-01-28 06:59:06,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=800, PETRI_PLACES=62, PETRI_TRANSITIONS=86} [2023-01-28 06:59:06,539 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 34 predicate places. [2023-01-28 06:59:06,539 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 86 transitions, 800 flow [2023-01-28 06:59:06,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.85714285714286) internal successors, (566), 7 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:06,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:59:06,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:59:06,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 06:59:06,540 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 06:59:06,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:59:06,544 INFO L85 PathProgramCache]: Analyzing trace with hash 635368993, now seen corresponding path program 5 times [2023-01-28 06:59:06,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:59:06,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898123538] [2023-01-28 06:59:06,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:59:06,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:59:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:59:07,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:59:07,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:59:07,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898123538] [2023-01-28 06:59:07,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898123538] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:59:07,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:59:07,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 06:59:07,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552655741] [2023-01-28 06:59:07,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:59:07,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 06:59:07,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:59:07,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 06:59:07,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-28 06:59:07,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 203 [2023-01-28 06:59:07,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 86 transitions, 800 flow. Second operand has 8 states, 8 states have (on average 80.625) internal successors, (645), 8 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:07,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:59:07,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 203 [2023-01-28 06:59:07,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:59:07,975 INFO L130 PetriNetUnfolder]: 509/949 cut-off events. [2023-01-28 06:59:07,975 INFO L131 PetriNetUnfolder]: For 3929/3929 co-relation queries the response was YES. [2023-01-28 06:59:07,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4567 conditions, 949 events. 509/949 cut-off events. For 3929/3929 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4797 event pairs, 64 based on Foata normal form. 36/985 useless extension candidates. Maximal degree in co-relation 4536. Up to 543 conditions per place. [2023-01-28 06:59:07,985 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 83 selfloop transitions, 29 changer transitions 4/116 dead transitions. [2023-01-28 06:59:07,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 116 transitions, 1208 flow [2023-01-28 06:59:07,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:59:07,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:59:07,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 603 transitions. [2023-01-28 06:59:07,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243490499648135 [2023-01-28 06:59:07,988 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 603 transitions. [2023-01-28 06:59:07,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 603 transitions. [2023-01-28 06:59:07,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:59:07,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 603 transitions. [2023-01-28 06:59:07,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:07,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:07,993 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:07,993 INFO L175 Difference]: Start difference. First operand has 62 places, 86 transitions, 800 flow. Second operand 7 states and 603 transitions. [2023-01-28 06:59:07,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 116 transitions, 1208 flow [2023-01-28 06:59:08,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 116 transitions, 1169 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-01-28 06:59:08,009 INFO L231 Difference]: Finished difference. Result has 69 places, 89 transitions, 897 flow [2023-01-28 06:59:08,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=897, PETRI_PLACES=69, PETRI_TRANSITIONS=89} [2023-01-28 06:59:08,010 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 41 predicate places. [2023-01-28 06:59:08,010 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 89 transitions, 897 flow [2023-01-28 06:59:08,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 80.625) internal successors, (645), 8 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:08,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:59:08,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:59:08,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 06:59:08,011 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 06:59:08,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:59:08,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1689299816, now seen corresponding path program 1 times [2023-01-28 06:59:08,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:59:08,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458036594] [2023-01-28 06:59:08,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:59:08,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:59:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:59:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:59:08,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:59:08,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458036594] [2023-01-28 06:59:08,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458036594] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:59:08,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:59:08,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 06:59:08,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279840301] [2023-01-28 06:59:08,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:59:08,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 06:59:08,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:59:08,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 06:59:08,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 06:59:08,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 203 [2023-01-28 06:59:08,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 89 transitions, 897 flow. Second operand has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:08,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:59:08,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 203 [2023-01-28 06:59:08,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:59:09,010 INFO L130 PetriNetUnfolder]: 579/1103 cut-off events. [2023-01-28 06:59:09,010 INFO L131 PetriNetUnfolder]: For 5915/5915 co-relation queries the response was YES. [2023-01-28 06:59:09,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5572 conditions, 1103 events. 579/1103 cut-off events. For 5915/5915 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5895 event pairs, 115 based on Foata normal form. 18/1121 useless extension candidates. Maximal degree in co-relation 5538. Up to 542 conditions per place. [2023-01-28 06:59:09,016 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 64 selfloop transitions, 24 changer transitions 31/119 dead transitions. [2023-01-28 06:59:09,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 119 transitions, 1347 flow [2023-01-28 06:59:09,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 06:59:09,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 06:59:09,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 463 transitions. [2023-01-28 06:59:09,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45615763546798027 [2023-01-28 06:59:09,019 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 463 transitions. [2023-01-28 06:59:09,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 463 transitions. [2023-01-28 06:59:09,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:59:09,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 463 transitions. [2023-01-28 06:59:09,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.6) internal successors, (463), 5 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:09,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:09,022 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:09,022 INFO L175 Difference]: Start difference. First operand has 69 places, 89 transitions, 897 flow. Second operand 5 states and 463 transitions. [2023-01-28 06:59:09,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 119 transitions, 1347 flow [2023-01-28 06:59:09,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 119 transitions, 1309 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-01-28 06:59:09,037 INFO L231 Difference]: Finished difference. Result has 69 places, 74 transitions, 743 flow [2023-01-28 06:59:09,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=743, PETRI_PLACES=69, PETRI_TRANSITIONS=74} [2023-01-28 06:59:09,038 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 41 predicate places. [2023-01-28 06:59:09,038 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 74 transitions, 743 flow [2023-01-28 06:59:09,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:09,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:59:09,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:59:09,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 06:59:09,040 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 06:59:09,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:59:09,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1757307124, now seen corresponding path program 2 times [2023-01-28 06:59:09,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:59:09,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505740764] [2023-01-28 06:59:09,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:59:09,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:59:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:59:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:59:09,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:59:09,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505740764] [2023-01-28 06:59:09,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505740764] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:59:09,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:59:09,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:59:09,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66083512] [2023-01-28 06:59:09,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:59:09,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:59:09,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:59:09,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:59:09,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:59:09,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 203 [2023-01-28 06:59:09,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 74 transitions, 743 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:09,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:59:09,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 203 [2023-01-28 06:59:09,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:59:10,212 INFO L130 PetriNetUnfolder]: 394/753 cut-off events. [2023-01-28 06:59:10,212 INFO L131 PetriNetUnfolder]: For 4104/4104 co-relation queries the response was YES. [2023-01-28 06:59:10,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3822 conditions, 753 events. 394/753 cut-off events. For 4104/4104 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3666 event pairs, 79 based on Foata normal form. 6/759 useless extension candidates. Maximal degree in co-relation 3788. Up to 627 conditions per place. [2023-01-28 06:59:10,218 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 71 selfloop transitions, 20 changer transitions 4/95 dead transitions. [2023-01-28 06:59:10,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 95 transitions, 1067 flow [2023-01-28 06:59:10,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 06:59:10,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 06:59:10,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 531 transitions. [2023-01-28 06:59:10,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43596059113300495 [2023-01-28 06:59:10,220 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 531 transitions. [2023-01-28 06:59:10,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 531 transitions. [2023-01-28 06:59:10,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:59:10,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 531 transitions. [2023-01-28 06:59:10,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:10,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:10,224 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:10,224 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 743 flow. Second operand 6 states and 531 transitions. [2023-01-28 06:59:10,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 95 transitions, 1067 flow [2023-01-28 06:59:10,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 95 transitions, 1013 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-01-28 06:59:10,233 INFO L231 Difference]: Finished difference. Result has 68 places, 76 transitions, 769 flow [2023-01-28 06:59:10,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=769, PETRI_PLACES=68, PETRI_TRANSITIONS=76} [2023-01-28 06:59:10,234 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 40 predicate places. [2023-01-28 06:59:10,234 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 76 transitions, 769 flow [2023-01-28 06:59:10,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:10,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:59:10,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:59:10,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 06:59:10,235 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 06:59:10,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:59:10,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1589283996, now seen corresponding path program 1 times [2023-01-28 06:59:10,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:59:10,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731515904] [2023-01-28 06:59:10,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:59:10,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:59:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:59:10,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:59:10,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:59:10,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731515904] [2023-01-28 06:59:10,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731515904] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:59:10,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:59:10,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 06:59:10,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636531330] [2023-01-28 06:59:10,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:59:10,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 06:59:10,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:59:10,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 06:59:10,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 06:59:10,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 203 [2023-01-28 06:59:10,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 76 transitions, 769 flow. Second operand has 6 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:10,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:59:10,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 203 [2023-01-28 06:59:10,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:59:11,196 INFO L130 PetriNetUnfolder]: 400/779 cut-off events. [2023-01-28 06:59:11,196 INFO L131 PetriNetUnfolder]: For 5084/5084 co-relation queries the response was YES. [2023-01-28 06:59:11,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4091 conditions, 779 events. 400/779 cut-off events. For 5084/5084 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3899 event pairs, 69 based on Foata normal form. 16/795 useless extension candidates. Maximal degree in co-relation 4058. Up to 448 conditions per place. [2023-01-28 06:59:11,202 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 89 selfloop transitions, 47 changer transitions 11/147 dead transitions. [2023-01-28 06:59:11,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 147 transitions, 1643 flow [2023-01-28 06:59:11,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 06:59:11,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 06:59:11,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 732 transitions. [2023-01-28 06:59:11,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45073891625615764 [2023-01-28 06:59:11,205 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 732 transitions. [2023-01-28 06:59:11,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 732 transitions. [2023-01-28 06:59:11,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:59:11,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 732 transitions. [2023-01-28 06:59:11,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 91.5) internal successors, (732), 8 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:11,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:11,210 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:11,210 INFO L175 Difference]: Start difference. First operand has 68 places, 76 transitions, 769 flow. Second operand 8 states and 732 transitions. [2023-01-28 06:59:11,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 147 transitions, 1643 flow [2023-01-28 06:59:11,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 147 transitions, 1597 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-01-28 06:59:11,221 INFO L231 Difference]: Finished difference. Result has 75 places, 103 transitions, 1220 flow [2023-01-28 06:59:11,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1220, PETRI_PLACES=75, PETRI_TRANSITIONS=103} [2023-01-28 06:59:11,222 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 47 predicate places. [2023-01-28 06:59:11,222 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 103 transitions, 1220 flow [2023-01-28 06:59:11,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:11,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:59:11,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:59:11,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 06:59:11,223 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 06:59:11,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:59:11,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1358056236, now seen corresponding path program 2 times [2023-01-28 06:59:11,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:59:11,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944060379] [2023-01-28 06:59:11,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:59:11,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:59:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:59:12,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:59:12,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:59:12,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944060379] [2023-01-28 06:59:12,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944060379] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:59:12,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:59:12,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 06:59:12,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823399190] [2023-01-28 06:59:12,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:59:12,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 06:59:12,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:59:12,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 06:59:12,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-01-28 06:59:12,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 203 [2023-01-28 06:59:12,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 103 transitions, 1220 flow. Second operand has 10 states, 10 states have (on average 76.5) internal successors, (765), 10 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:12,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:59:12,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 203 [2023-01-28 06:59:12,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:59:13,090 INFO L130 PetriNetUnfolder]: 378/746 cut-off events. [2023-01-28 06:59:13,090 INFO L131 PetriNetUnfolder]: For 5946/5946 co-relation queries the response was YES. [2023-01-28 06:59:13,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4258 conditions, 746 events. 378/746 cut-off events. For 5946/5946 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3756 event pairs, 66 based on Foata normal form. 16/762 useless extension candidates. Maximal degree in co-relation 4221. Up to 481 conditions per place. [2023-01-28 06:59:13,097 INFO L137 encePairwiseOnDemand]: 193/203 looper letters, 87 selfloop transitions, 82 changer transitions 14/183 dead transitions. [2023-01-28 06:59:13,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 183 transitions, 2269 flow [2023-01-28 06:59:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 06:59:13,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 06:59:13,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1224 transitions. [2023-01-28 06:59:13,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019704433497537 [2023-01-28 06:59:13,101 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1224 transitions. [2023-01-28 06:59:13,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1224 transitions. [2023-01-28 06:59:13,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:59:13,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1224 transitions. [2023-01-28 06:59:13,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 81.6) internal successors, (1224), 15 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:13,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:13,109 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:13,110 INFO L175 Difference]: Start difference. First operand has 75 places, 103 transitions, 1220 flow. Second operand 15 states and 1224 transitions. [2023-01-28 06:59:13,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 183 transitions, 2269 flow [2023-01-28 06:59:13,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 183 transitions, 2187 flow, removed 41 selfloop flow, removed 0 redundant places. [2023-01-28 06:59:13,131 INFO L231 Difference]: Finished difference. Result has 97 places, 142 transitions, 1860 flow [2023-01-28 06:59:13,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1860, PETRI_PLACES=97, PETRI_TRANSITIONS=142} [2023-01-28 06:59:13,132 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 69 predicate places. [2023-01-28 06:59:13,132 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 142 transitions, 1860 flow [2023-01-28 06:59:13,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.5) internal successors, (765), 10 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:13,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:59:13,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:59:13,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 06:59:13,133 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 06:59:13,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:59:13,133 INFO L85 PathProgramCache]: Analyzing trace with hash -267089210, now seen corresponding path program 3 times [2023-01-28 06:59:13,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:59:13,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763449863] [2023-01-28 06:59:13,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:59:13,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:59:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:59:14,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:59:14,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:59:14,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763449863] [2023-01-28 06:59:14,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763449863] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:59:14,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:59:14,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 06:59:14,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42326881] [2023-01-28 06:59:14,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:59:14,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 06:59:14,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:59:14,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 06:59:14,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-28 06:59:14,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 203 [2023-01-28 06:59:14,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 142 transitions, 1860 flow. Second operand has 8 states, 8 states have (on average 79.875) internal successors, (639), 8 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:14,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:59:14,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 203 [2023-01-28 06:59:14,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:59:14,630 INFO L130 PetriNetUnfolder]: 440/880 cut-off events. [2023-01-28 06:59:14,630 INFO L131 PetriNetUnfolder]: For 7018/7018 co-relation queries the response was YES. [2023-01-28 06:59:14,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5305 conditions, 880 events. 440/880 cut-off events. For 7018/7018 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4741 event pairs, 57 based on Foata normal form. 16/896 useless extension candidates. Maximal degree in co-relation 5258. Up to 446 conditions per place. [2023-01-28 06:59:14,638 INFO L137 encePairwiseOnDemand]: 193/203 looper letters, 87 selfloop transitions, 66 changer transitions 39/192 dead transitions. [2023-01-28 06:59:14,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 192 transitions, 2696 flow [2023-01-28 06:59:14,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 06:59:14,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 06:59:14,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 764 transitions. [2023-01-28 06:59:14,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181718664477285 [2023-01-28 06:59:14,641 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 764 transitions. [2023-01-28 06:59:14,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 764 transitions. [2023-01-28 06:59:14,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:59:14,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 764 transitions. [2023-01-28 06:59:14,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 84.88888888888889) internal successors, (764), 9 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:14,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:14,646 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:14,646 INFO L175 Difference]: Start difference. First operand has 97 places, 142 transitions, 1860 flow. Second operand 9 states and 764 transitions. [2023-01-28 06:59:14,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 192 transitions, 2696 flow [2023-01-28 06:59:14,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 192 transitions, 2566 flow, removed 51 selfloop flow, removed 2 redundant places. [2023-01-28 06:59:14,672 INFO L231 Difference]: Finished difference. Result has 106 places, 132 transitions, 1844 flow [2023-01-28 06:59:14,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1844, PETRI_PLACES=106, PETRI_TRANSITIONS=132} [2023-01-28 06:59:14,673 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 78 predicate places. [2023-01-28 06:59:14,673 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 132 transitions, 1844 flow [2023-01-28 06:59:14,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 79.875) internal successors, (639), 8 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:14,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:59:14,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:59:14,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 06:59:14,674 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 06:59:14,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:59:14,674 INFO L85 PathProgramCache]: Analyzing trace with hash 637891837, now seen corresponding path program 1 times [2023-01-28 06:59:14,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:59:14,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438856278] [2023-01-28 06:59:14,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:59:14,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:59:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:59:15,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:59:15,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:59:15,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438856278] [2023-01-28 06:59:15,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438856278] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:59:15,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:59:15,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 06:59:15,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766145044] [2023-01-28 06:59:15,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:59:15,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 06:59:15,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:59:15,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 06:59:15,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-28 06:59:15,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 203 [2023-01-28 06:59:15,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 132 transitions, 1844 flow. Second operand has 8 states, 8 states have (on average 85.875) internal successors, (687), 8 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:15,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:59:15,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 203 [2023-01-28 06:59:15,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:59:15,822 INFO L130 PetriNetUnfolder]: 324/642 cut-off events. [2023-01-28 06:59:15,823 INFO L131 PetriNetUnfolder]: For 5744/5744 co-relation queries the response was YES. [2023-01-28 06:59:15,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4111 conditions, 642 events. 324/642 cut-off events. For 5744/5744 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3163 event pairs, 52 based on Foata normal form. 16/658 useless extension candidates. Maximal degree in co-relation 4072. Up to 464 conditions per place. [2023-01-28 06:59:15,827 INFO L137 encePairwiseOnDemand]: 199/203 looper letters, 0 selfloop transitions, 0 changer transitions 139/139 dead transitions. [2023-01-28 06:59:15,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 139 transitions, 2158 flow [2023-01-28 06:59:15,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 06:59:15,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 06:59:15,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-01-28 06:59:15,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4433497536945813 [2023-01-28 06:59:15,829 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-01-28 06:59:15,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-01-28 06:59:15,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:59:15,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-01-28 06:59:15,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:15,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:15,832 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:15,832 INFO L175 Difference]: Start difference. First operand has 106 places, 132 transitions, 1844 flow. Second operand 5 states and 450 transitions. [2023-01-28 06:59:15,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 139 transitions, 2158 flow [2023-01-28 06:59:15,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 139 transitions, 2072 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-01-28 06:59:15,851 INFO L231 Difference]: Finished difference. Result has 99 places, 0 transitions, 0 flow [2023-01-28 06:59:15,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1736, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=99, PETRI_TRANSITIONS=0} [2023-01-28 06:59:15,853 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 71 predicate places. [2023-01-28 06:59:15,853 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 0 transitions, 0 flow [2023-01-28 06:59:15,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.875) internal successors, (687), 8 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:59:15,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-01-28 06:59:15,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-01-28 06:59:15,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-01-28 06:59:15,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-01-28 06:59:15,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-01-28 06:59:15,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-01-28 06:59:15,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-01-28 06:59:15,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 06:59:15,857 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 2, 1, 1, 1, 1, 1] [2023-01-28 06:59:15,863 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 06:59:15,863 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 06:59:15,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 06:59:15 BasicIcfg [2023-01-28 06:59:15,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 06:59:15,866 INFO L158 Benchmark]: Toolchain (without parser) took 24803.59ms. Allocated memory was 356.5MB in the beginning and 889.2MB in the end (delta: 532.7MB). Free memory was 314.7MB in the beginning and 432.1MB in the end (delta: -117.4MB). Peak memory consumption was 416.9MB. Max. memory is 16.0GB. [2023-01-28 06:59:15,866 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory was 213.6MB in the beginning and 213.4MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 06:59:15,867 INFO L158 Benchmark]: CACSL2BoogieTranslator took 550.40ms. Allocated memory is still 356.5MB. Free memory was 314.3MB in the beginning and 287.0MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-01-28 06:59:15,867 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.11ms. Allocated memory is still 356.5MB. Free memory was 287.0MB in the beginning and 283.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 06:59:15,867 INFO L158 Benchmark]: Boogie Preprocessor took 57.41ms. Allocated memory is still 356.5MB. Free memory was 283.3MB in the beginning and 280.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:59:15,868 INFO L158 Benchmark]: RCFGBuilder took 837.62ms. Allocated memory is still 356.5MB. Free memory was 280.9MB in the beginning and 274.2MB in the end (delta: 6.7MB). Peak memory consumption was 21.7MB. Max. memory is 16.0GB. [2023-01-28 06:59:15,868 INFO L158 Benchmark]: TraceAbstraction took 23276.35ms. Allocated memory was 356.5MB in the beginning and 889.2MB in the end (delta: 532.7MB). Free memory was 274.2MB in the beginning and 432.1MB in the end (delta: -157.9MB). Peak memory consumption was 374.2MB. Max. memory is 16.0GB. [2023-01-28 06:59:15,869 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory was 213.6MB in the beginning and 213.4MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 550.40ms. Allocated memory is still 356.5MB. Free memory was 314.3MB in the beginning and 287.0MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 76.11ms. Allocated memory is still 356.5MB. Free memory was 287.0MB in the beginning and 283.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 57.41ms. Allocated memory is still 356.5MB. Free memory was 283.3MB in the beginning and 280.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 837.62ms. Allocated memory is still 356.5MB. Free memory was 280.9MB in the beginning and 274.2MB in the end (delta: 6.7MB). Peak memory consumption was 21.7MB. Max. memory is 16.0GB. * TraceAbstraction took 23276.35ms. Allocated memory was 356.5MB in the beginning and 889.2MB in the end (delta: 532.7MB). Free memory was 274.2MB in the beginning and 432.1MB in the end (delta: -157.9MB). Peak memory consumption was 374.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0s, 110 PlacesBefore, 28 PlacesAfterwards, 105 TransitionsBefore, 21 TransitionsAfterwards, 1314 CoEnabledTransitionPairs, 7 FixpointIterations, 50 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 96 TotalNumberOfCompositions, 4349 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1368, independent: 1172, independent conditional: 0, independent unconditional: 1172, dependent: 196, dependent conditional: 0, dependent unconditional: 196, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 728, independent: 685, independent conditional: 0, independent unconditional: 685, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1368, independent: 487, independent conditional: 0, independent unconditional: 487, dependent: 153, dependent conditional: 0, dependent unconditional: 153, unknown: 728, unknown conditional: 0, unknown unconditional: 728] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 5 procedures, 129 locations, 7 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: 23.2s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 406 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 406 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 179 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1467 IncrementalHoareTripleChecker+Invalid, 1646 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 179 mSolverCounterUnsat, 0 mSDtfsCounter, 1467 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1860occurred in iteration=13, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 166 ConstructedInterpolants, 0 QuantifiedInterpolants, 2462 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 06:59:15,892 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...