/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 22:54:47,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 22:54:47,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 22:54:47,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 22:54:47,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 22:54:47,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 22:54:47,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 22:54:47,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 22:54:47,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 22:54:47,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 22:54:47,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 22:54:47,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 22:54:47,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 22:54:47,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 22:54:47,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 22:54:47,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 22:54:47,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 22:54:47,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 22:54:47,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 22:54:47,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 22:54:47,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 22:54:47,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 22:54:47,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 22:54:47,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 22:54:47,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 22:54:47,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 22:54:47,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 22:54:47,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 22:54:47,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 22:54:47,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 22:54:47,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 22:54:47,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 22:54:47,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 22:54:47,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 22:54:47,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 22:54:47,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 22:54:47,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 22:54:47,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 22:54:47,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 22:54:47,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 22:54:47,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 22:54:47,632 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 22:54:47,648 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 22:54:47,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 22:54:47,649 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 22:54:47,649 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 22:54:47,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 22:54:47,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 22:54:47,650 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 22:54:47,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 22:54:47,650 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 22:54:47,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 22:54:47,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 22:54:47,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 22:54:47,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 22:54:47,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 22:54:47,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 22:54:47,651 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 22:54:47,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 22:54:47,651 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 22:54:47,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 22:54:47,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 22:54:47,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 22:54:47,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 22:54:47,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 22:54:47,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:54:47,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 22:54:47,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 22:54:47,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 22:54:47,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 22:54:47,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 22:54:47,652 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 22:54:47,652 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 22:54:47,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 22:54:47,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 22:54:47,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 22:54:47,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 22:54:47,856 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 22:54:47,856 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 22:54:47,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c [2022-09-20 22:54:47,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad90e4edd/7cf4b930ef624e9e911cc8b4f0d260e4/FLAG018a955a5 [2022-09-20 22:54:48,274 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 22:54:48,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c [2022-09-20 22:54:48,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad90e4edd/7cf4b930ef624e9e911cc8b4f0d260e4/FLAG018a955a5 [2022-09-20 22:54:48,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad90e4edd/7cf4b930ef624e9e911cc8b4f0d260e4 [2022-09-20 22:54:48,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 22:54:48,292 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 22:54:48,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 22:54:48,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 22:54:48,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 22:54:48,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:54:48" (1/1) ... [2022-09-20 22:54:48,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21cb40e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:48, skipping insertion in model container [2022-09-20 22:54:48,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:54:48" (1/1) ... [2022-09-20 22:54:48,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 22:54:48,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 22:54:48,458 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c[2330,2343] [2022-09-20 22:54:48,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:54:48,470 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 22:54:48,483 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c[2330,2343] [2022-09-20 22:54:48,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:54:48,494 INFO L208 MainTranslator]: Completed translation [2022-09-20 22:54:48,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:48 WrapperNode [2022-09-20 22:54:48,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 22:54:48,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 22:54:48,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 22:54:48,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 22:54:48,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:48" (1/1) ... [2022-09-20 22:54:48,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:48" (1/1) ... [2022-09-20 22:54:48,524 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 170 [2022-09-20 22:54:48,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 22:54:48,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 22:54:48,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 22:54:48,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 22:54:48,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:48" (1/1) ... [2022-09-20 22:54:48,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:48" (1/1) ... [2022-09-20 22:54:48,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:48" (1/1) ... [2022-09-20 22:54:48,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:48" (1/1) ... [2022-09-20 22:54:48,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:48" (1/1) ... [2022-09-20 22:54:48,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:48" (1/1) ... [2022-09-20 22:54:48,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:48" (1/1) ... [2022-09-20 22:54:48,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 22:54:48,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 22:54:48,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 22:54:48,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 22:54:48,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:48" (1/1) ... [2022-09-20 22:54:48,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:54:48,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:54:48,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-20 22:54:48,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-20 22:54:48,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 22:54:48,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 22:54:48,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 22:54:48,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 22:54:48,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 22:54:48,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 22:54:48,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 22:54:48,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 22:54:48,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 22:54:48,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 22:54:48,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 22:54:48,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 22:54:48,595 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 22:54:48,656 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 22:54:48,658 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 22:54:48,874 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 22:54:48,882 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 22:54:48,882 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-09-20 22:54:48,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:54:48 BoogieIcfgContainer [2022-09-20 22:54:48,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 22:54:48,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 22:54:48,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 22:54:48,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 22:54:48,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 10:54:48" (1/3) ... [2022-09-20 22:54:48,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611efad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:54:48, skipping insertion in model container [2022-09-20 22:54:48,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:54:48" (2/3) ... [2022-09-20 22:54:48,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611efad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:54:48, skipping insertion in model container [2022-09-20 22:54:48,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:54:48" (3/3) ... [2022-09-20 22:54:48,890 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2022-09-20 22:54:48,902 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 22:54:48,902 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 22:54:48,902 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 22:54:48,983 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-20 22:54:49,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 230 transitions, 476 flow [2022-09-20 22:54:49,094 INFO L130 PetriNetUnfolder]: 16/228 cut-off events. [2022-09-20 22:54:49,094 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 22:54:49,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 228 events. 16/228 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 383 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 153. Up to 2 conditions per place. [2022-09-20 22:54:49,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 230 transitions, 476 flow [2022-09-20 22:54:49,111 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 219 transitions, 450 flow [2022-09-20 22:54:49,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 22:54:49,124 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;@665ff3f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 22:54:49,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-09-20 22:54:49,153 INFO L130 PetriNetUnfolder]: 11/173 cut-off events. [2022-09-20 22:54:49,153 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 22:54:49,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:49,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:49,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:49,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:49,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1429098275, now seen corresponding path program 1 times [2022-09-20 22:54:49,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:49,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198351195] [2022-09-20 22:54:49,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:49,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:49,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:49,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:49,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198351195] [2022-09-20 22:54:49,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198351195] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:49,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:49,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 22:54:49,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218959184] [2022-09-20 22:54:49,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:49,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 22:54:49,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:49,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 22:54:49,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 22:54:49,324 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 230 [2022-09-20 22:54:49,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 219 transitions, 450 flow. Second operand has 2 states, 2 states have (on average 215.5) internal successors, (431), 2 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:49,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:49,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 230 [2022-09-20 22:54:49,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:49,378 INFO L130 PetriNetUnfolder]: 4/207 cut-off events. [2022-09-20 22:54:49,379 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-09-20 22:54:49,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 207 events. 4/207 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 326 event pairs, 0 based on Foata normal form. 14/207 useless extension candidates. Maximal degree in co-relation 144. Up to 5 conditions per place. [2022-09-20 22:54:49,381 INFO L137 encePairwiseOnDemand]: 218/230 looper letters, 4 selfloop transitions, 0 changer transitions 2/207 dead transitions. [2022-09-20 22:54:49,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 207 transitions, 434 flow [2022-09-20 22:54:49,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 22:54:49,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 22:54:49,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 442 transitions. [2022-09-20 22:54:49,391 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9608695652173913 [2022-09-20 22:54:49,392 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 442 transitions. [2022-09-20 22:54:49,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 442 transitions. [2022-09-20 22:54:49,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:49,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 442 transitions. [2022-09-20 22:54:49,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 221.0) internal successors, (442), 2 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:49,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:49,404 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:49,405 INFO L175 Difference]: Start difference. First operand has 210 places, 219 transitions, 450 flow. Second operand 2 states and 442 transitions. [2022-09-20 22:54:49,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 207 transitions, 434 flow [2022-09-20 22:54:49,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 207 transitions, 426 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 22:54:49,412 INFO L231 Difference]: Finished difference. Result has 207 places, 205 transitions, 414 flow [2022-09-20 22:54:49,414 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=414, PETRI_PLACES=207, PETRI_TRANSITIONS=205} [2022-09-20 22:54:49,416 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, -3 predicate places. [2022-09-20 22:54:49,416 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 205 transitions, 414 flow [2022-09-20 22:54:49,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 215.5) internal successors, (431), 2 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:49,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:49,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:49,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 22:54:49,418 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:49,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:49,420 INFO L85 PathProgramCache]: Analyzing trace with hash -562117326, now seen corresponding path program 1 times [2022-09-20 22:54:49,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:49,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219248812] [2022-09-20 22:54:49,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:49,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:49,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:49,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:49,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219248812] [2022-09-20 22:54:49,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219248812] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:49,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:49,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:54:49,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501156304] [2022-09-20 22:54:49,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:49,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:54:49,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:49,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:54:49,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:54:49,557 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2022-09-20 22:54:49,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 205 transitions, 414 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:49,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:49,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2022-09-20 22:54:49,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:49,786 INFO L130 PetriNetUnfolder]: 44/341 cut-off events. [2022-09-20 22:54:49,786 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-09-20 22:54:49,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 341 events. 44/341 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1258 event pairs, 15 based on Foata normal form. 1/328 useless extension candidates. Maximal degree in co-relation 465. Up to 58 conditions per place. [2022-09-20 22:54:49,793 INFO L137 encePairwiseOnDemand]: 221/230 looper letters, 42 selfloop transitions, 3 changer transitions 16/242 dead transitions. [2022-09-20 22:54:49,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 242 transitions, 619 flow [2022-09-20 22:54:49,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:54:49,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:54:49,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2545 transitions. [2022-09-20 22:54:49,808 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8511705685618729 [2022-09-20 22:54:49,808 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2545 transitions. [2022-09-20 22:54:49,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2545 transitions. [2022-09-20 22:54:49,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:49,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2545 transitions. [2022-09-20 22:54:49,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 195.76923076923077) internal successors, (2545), 13 states have internal predecessors, (2545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:49,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:49,821 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:49,821 INFO L175 Difference]: Start difference. First operand has 207 places, 205 transitions, 414 flow. Second operand 13 states and 2545 transitions. [2022-09-20 22:54:49,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 242 transitions, 619 flow [2022-09-20 22:54:49,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 242 transitions, 619 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 22:54:49,829 INFO L231 Difference]: Finished difference. Result has 228 places, 207 transitions, 457 flow [2022-09-20 22:54:49,829 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=457, PETRI_PLACES=228, PETRI_TRANSITIONS=207} [2022-09-20 22:54:49,830 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 18 predicate places. [2022-09-20 22:54:49,830 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 207 transitions, 457 flow [2022-09-20 22:54:49,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:49,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:49,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:49,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 22:54:49,832 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:49,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:49,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1100059918, now seen corresponding path program 2 times [2022-09-20 22:54:49,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:49,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271659150] [2022-09-20 22:54:49,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:49,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:49,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:49,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:49,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271659150] [2022-09-20 22:54:49,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271659150] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:49,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:49,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:54:49,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322470066] [2022-09-20 22:54:49,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:49,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:54:49,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:49,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:54:49,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:54:49,934 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2022-09-20 22:54:49,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 207 transitions, 457 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:49,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:49,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2022-09-20 22:54:49,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:50,089 INFO L130 PetriNetUnfolder]: 55/420 cut-off events. [2022-09-20 22:54:50,089 INFO L131 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2022-09-20 22:54:50,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 420 events. 55/420 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1930 event pairs, 30 based on Foata normal form. 1/405 useless extension candidates. Maximal degree in co-relation 785. Up to 92 conditions per place. [2022-09-20 22:54:50,092 INFO L137 encePairwiseOnDemand]: 221/230 looper letters, 49 selfloop transitions, 3 changer transitions 15/248 dead transitions. [2022-09-20 22:54:50,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 248 transitions, 789 flow [2022-09-20 22:54:50,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:54:50,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:54:50,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2543 transitions. [2022-09-20 22:54:50,097 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8505016722408026 [2022-09-20 22:54:50,097 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2543 transitions. [2022-09-20 22:54:50,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2543 transitions. [2022-09-20 22:54:50,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:50,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2543 transitions. [2022-09-20 22:54:50,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 195.6153846153846) internal successors, (2543), 13 states have internal predecessors, (2543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:50,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:50,109 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:50,109 INFO L175 Difference]: Start difference. First operand has 228 places, 207 transitions, 457 flow. Second operand 13 states and 2543 transitions. [2022-09-20 22:54:50,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 248 transitions, 789 flow [2022-09-20 22:54:50,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 248 transitions, 747 flow, removed 19 selfloop flow, removed 7 redundant places. [2022-09-20 22:54:50,116 INFO L231 Difference]: Finished difference. Result has 236 places, 209 transitions, 491 flow [2022-09-20 22:54:50,116 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=491, PETRI_PLACES=236, PETRI_TRANSITIONS=209} [2022-09-20 22:54:50,118 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 26 predicate places. [2022-09-20 22:54:50,118 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 209 transitions, 491 flow [2022-09-20 22:54:50,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:50,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:50,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:50,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 22:54:50,119 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:50,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:50,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1890111406, now seen corresponding path program 1 times [2022-09-20 22:54:50,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:50,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368463782] [2022-09-20 22:54:50,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:50,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:50,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:50,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368463782] [2022-09-20 22:54:50,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368463782] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:50,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:50,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:54:50,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224565160] [2022-09-20 22:54:50,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:50,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:54:50,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:50,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:54:50,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:54:50,274 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 230 [2022-09-20 22:54:50,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 209 transitions, 491 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:50,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:50,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 230 [2022-09-20 22:54:50,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:50,460 INFO L130 PetriNetUnfolder]: 121/1217 cut-off events. [2022-09-20 22:54:50,460 INFO L131 PetriNetUnfolder]: For 421/442 co-relation queries the response was YES. [2022-09-20 22:54:50,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1844 conditions, 1217 events. 121/1217 cut-off events. For 421/442 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 7764 event pairs, 28 based on Foata normal form. 7/1097 useless extension candidates. Maximal degree in co-relation 1824. Up to 116 conditions per place. [2022-09-20 22:54:50,469 INFO L137 encePairwiseOnDemand]: 218/230 looper letters, 53 selfloop transitions, 14 changer transitions 0/250 dead transitions. [2022-09-20 22:54:50,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 250 transitions, 734 flow [2022-09-20 22:54:50,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 22:54:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 22:54:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1391 transitions. [2022-09-20 22:54:50,472 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8639751552795031 [2022-09-20 22:54:50,472 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1391 transitions. [2022-09-20 22:54:50,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1391 transitions. [2022-09-20 22:54:50,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:50,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1391 transitions. [2022-09-20 22:54:50,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 198.71428571428572) internal successors, (1391), 7 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:50,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:50,479 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:50,479 INFO L175 Difference]: Start difference. First operand has 236 places, 209 transitions, 491 flow. Second operand 7 states and 1391 transitions. [2022-09-20 22:54:50,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 250 transitions, 734 flow [2022-09-20 22:54:50,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 250 transitions, 703 flow, removed 15 selfloop flow, removed 7 redundant places. [2022-09-20 22:54:50,487 INFO L231 Difference]: Finished difference. Result has 230 places, 217 transitions, 553 flow [2022-09-20 22:54:50,487 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=553, PETRI_PLACES=230, PETRI_TRANSITIONS=217} [2022-09-20 22:54:50,488 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 20 predicate places. [2022-09-20 22:54:50,488 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 217 transitions, 553 flow [2022-09-20 22:54:50,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:50,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:50,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:50,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 22:54:50,492 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:50,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:50,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1404353566, now seen corresponding path program 1 times [2022-09-20 22:54:50,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:50,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241823930] [2022-09-20 22:54:50,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:50,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:50,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:50,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:50,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241823930] [2022-09-20 22:54:50,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241823930] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:50,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:50,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:54:50,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798438473] [2022-09-20 22:54:50,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:50,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:54:50,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:50,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:54:50,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:54:50,611 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 230 [2022-09-20 22:54:50,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 217 transitions, 553 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:50,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:50,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 230 [2022-09-20 22:54:50,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:50,800 INFO L130 PetriNetUnfolder]: 125/1271 cut-off events. [2022-09-20 22:54:50,801 INFO L131 PetriNetUnfolder]: For 516/561 co-relation queries the response was YES. [2022-09-20 22:54:50,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2058 conditions, 1271 events. 125/1271 cut-off events. For 516/561 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 8367 event pairs, 36 based on Foata normal form. 12/1187 useless extension candidates. Maximal degree in co-relation 2041. Up to 123 conditions per place. [2022-09-20 22:54:50,810 INFO L137 encePairwiseOnDemand]: 221/230 looper letters, 59 selfloop transitions, 13 changer transitions 0/255 dead transitions. [2022-09-20 22:54:50,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 255 transitions, 810 flow [2022-09-20 22:54:50,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 22:54:50,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 22:54:50,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1391 transitions. [2022-09-20 22:54:50,813 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8639751552795031 [2022-09-20 22:54:50,813 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1391 transitions. [2022-09-20 22:54:50,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1391 transitions. [2022-09-20 22:54:50,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:50,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1391 transitions. [2022-09-20 22:54:50,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 198.71428571428572) internal successors, (1391), 7 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:50,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:50,818 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:50,818 INFO L175 Difference]: Start difference. First operand has 230 places, 217 transitions, 553 flow. Second operand 7 states and 1391 transitions. [2022-09-20 22:54:50,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 255 transitions, 810 flow [2022-09-20 22:54:50,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 255 transitions, 806 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 22:54:50,824 INFO L231 Difference]: Finished difference. Result has 237 places, 223 transitions, 624 flow [2022-09-20 22:54:50,825 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=624, PETRI_PLACES=237, PETRI_TRANSITIONS=223} [2022-09-20 22:54:50,827 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 27 predicate places. [2022-09-20 22:54:50,827 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 223 transitions, 624 flow [2022-09-20 22:54:50,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:50,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:50,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:50,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 22:54:50,828 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:50,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:50,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1596576872, now seen corresponding path program 3 times [2022-09-20 22:54:50,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:50,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912376379] [2022-09-20 22:54:50,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:50,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:50,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:50,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912376379] [2022-09-20 22:54:50,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912376379] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:50,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:50,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:54:50,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514977848] [2022-09-20 22:54:50,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:50,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:54:50,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:50,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:54:50,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:54:50,912 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2022-09-20 22:54:50,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 223 transitions, 624 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:50,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:50,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2022-09-20 22:54:50,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:51,148 INFO L130 PetriNetUnfolder]: 170/1366 cut-off events. [2022-09-20 22:54:51,149 INFO L131 PetriNetUnfolder]: For 1069/1104 co-relation queries the response was YES. [2022-09-20 22:54:51,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2721 conditions, 1366 events. 170/1366 cut-off events. For 1069/1104 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8640 event pairs, 90 based on Foata normal form. 3/1279 useless extension candidates. Maximal degree in co-relation 2700. Up to 310 conditions per place. [2022-09-20 22:54:51,158 INFO L137 encePairwiseOnDemand]: 221/230 looper letters, 34 selfloop transitions, 8 changer transitions 12/249 dead transitions. [2022-09-20 22:54:51,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 249 transitions, 887 flow [2022-09-20 22:54:51,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 22:54:51,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 22:54:51,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2152 transitions. [2022-09-20 22:54:51,162 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.850592885375494 [2022-09-20 22:54:51,162 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2152 transitions. [2022-09-20 22:54:51,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2152 transitions. [2022-09-20 22:54:51,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:51,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2152 transitions. [2022-09-20 22:54:51,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 195.63636363636363) internal successors, (2152), 11 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:51,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 230.0) internal successors, (2760), 12 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:51,170 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 230.0) internal successors, (2760), 12 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:51,170 INFO L175 Difference]: Start difference. First operand has 237 places, 223 transitions, 624 flow. Second operand 11 states and 2152 transitions. [2022-09-20 22:54:51,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 249 transitions, 887 flow [2022-09-20 22:54:51,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 249 transitions, 881 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-09-20 22:54:51,177 INFO L231 Difference]: Finished difference. Result has 253 places, 229 transitions, 711 flow [2022-09-20 22:54:51,177 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=711, PETRI_PLACES=253, PETRI_TRANSITIONS=229} [2022-09-20 22:54:51,179 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 43 predicate places. [2022-09-20 22:54:51,179 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 229 transitions, 711 flow [2022-09-20 22:54:51,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:51,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:51,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:51,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 22:54:51,180 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:51,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:51,180 INFO L85 PathProgramCache]: Analyzing trace with hash 612149600, now seen corresponding path program 1 times [2022-09-20 22:54:51,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:51,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187303730] [2022-09-20 22:54:51,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:51,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:51,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:51,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:51,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187303730] [2022-09-20 22:54:51,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187303730] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:51,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:51,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:54:51,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670667981] [2022-09-20 22:54:51,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:51,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:54:51,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:51,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:54:51,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:54:51,253 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2022-09-20 22:54:51,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 229 transitions, 711 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:51,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:51,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2022-09-20 22:54:51,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:51,479 INFO L130 PetriNetUnfolder]: 178/1438 cut-off events. [2022-09-20 22:54:51,480 INFO L131 PetriNetUnfolder]: For 1855/1894 co-relation queries the response was YES. [2022-09-20 22:54:51,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3127 conditions, 1438 events. 178/1438 cut-off events. For 1855/1894 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 9274 event pairs, 80 based on Foata normal form. 2/1348 useless extension candidates. Maximal degree in co-relation 3097. Up to 316 conditions per place. [2022-09-20 22:54:51,493 INFO L137 encePairwiseOnDemand]: 221/230 looper letters, 40 selfloop transitions, 8 changer transitions 12/255 dead transitions. [2022-09-20 22:54:51,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 255 transitions, 998 flow [2022-09-20 22:54:51,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 22:54:51,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 22:54:51,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2152 transitions. [2022-09-20 22:54:51,497 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.850592885375494 [2022-09-20 22:54:51,497 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2152 transitions. [2022-09-20 22:54:51,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2152 transitions. [2022-09-20 22:54:51,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:51,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2152 transitions. [2022-09-20 22:54:51,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 195.63636363636363) internal successors, (2152), 11 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:51,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 230.0) internal successors, (2760), 12 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:51,505 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 230.0) internal successors, (2760), 12 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:51,505 INFO L175 Difference]: Start difference. First operand has 253 places, 229 transitions, 711 flow. Second operand 11 states and 2152 transitions. [2022-09-20 22:54:51,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 255 transitions, 998 flow [2022-09-20 22:54:51,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 255 transitions, 967 flow, removed 13 selfloop flow, removed 5 redundant places. [2022-09-20 22:54:51,559 INFO L231 Difference]: Finished difference. Result has 261 places, 235 transitions, 775 flow [2022-09-20 22:54:51,560 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=775, PETRI_PLACES=261, PETRI_TRANSITIONS=235} [2022-09-20 22:54:51,560 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 51 predicate places. [2022-09-20 22:54:51,560 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 235 transitions, 775 flow [2022-09-20 22:54:51,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:51,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:51,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:51,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 22:54:51,561 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:51,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:51,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1454391880, now seen corresponding path program 2 times [2022-09-20 22:54:51,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:51,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606730066] [2022-09-20 22:54:51,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:51,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:51,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:51,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606730066] [2022-09-20 22:54:51,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606730066] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:51,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:51,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:54:51,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035634638] [2022-09-20 22:54:51,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:51,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:54:51,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:51,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:54:51,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:54:51,623 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 230 [2022-09-20 22:54:51,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 235 transitions, 775 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:51,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:51,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 230 [2022-09-20 22:54:51,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:51,818 INFO L130 PetriNetUnfolder]: 137/1371 cut-off events. [2022-09-20 22:54:51,818 INFO L131 PetriNetUnfolder]: For 1362/1395 co-relation queries the response was YES. [2022-09-20 22:54:51,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2630 conditions, 1371 events. 137/1371 cut-off events. For 1362/1395 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 9379 event pairs, 36 based on Foata normal form. 10/1283 useless extension candidates. Maximal degree in co-relation 2596. Up to 135 conditions per place. [2022-09-20 22:54:51,831 INFO L137 encePairwiseOnDemand]: 219/230 looper letters, 55 selfloop transitions, 16 changer transitions 0/266 dead transitions. [2022-09-20 22:54:51,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 266 transitions, 1023 flow [2022-09-20 22:54:51,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 22:54:51,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 22:54:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1389 transitions. [2022-09-20 22:54:51,833 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8627329192546583 [2022-09-20 22:54:51,833 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1389 transitions. [2022-09-20 22:54:51,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1389 transitions. [2022-09-20 22:54:51,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:51,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1389 transitions. [2022-09-20 22:54:51,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 198.42857142857142) internal successors, (1389), 7 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:51,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:51,849 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:51,849 INFO L175 Difference]: Start difference. First operand has 261 places, 235 transitions, 775 flow. Second operand 7 states and 1389 transitions. [2022-09-20 22:54:51,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 266 transitions, 1023 flow [2022-09-20 22:54:51,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 266 transitions, 960 flow, removed 29 selfloop flow, removed 5 redundant places. [2022-09-20 22:54:51,859 INFO L231 Difference]: Finished difference. Result has 260 places, 237 transitions, 802 flow [2022-09-20 22:54:51,859 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=802, PETRI_PLACES=260, PETRI_TRANSITIONS=237} [2022-09-20 22:54:51,861 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 50 predicate places. [2022-09-20 22:54:51,861 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 237 transitions, 802 flow [2022-09-20 22:54:51,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:51,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:51,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:51,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 22:54:51,862 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:51,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:51,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1230151340, now seen corresponding path program 2 times [2022-09-20 22:54:51,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:51,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716508207] [2022-09-20 22:54:51,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:51,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:51,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:51,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:51,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716508207] [2022-09-20 22:54:51,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716508207] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:51,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:51,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:54:51,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216323284] [2022-09-20 22:54:51,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:51,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:54:51,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:51,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:54:51,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:54:51,922 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2022-09-20 22:54:51,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 237 transitions, 802 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:51,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:51,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2022-09-20 22:54:51,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:52,209 INFO L130 PetriNetUnfolder]: 157/1390 cut-off events. [2022-09-20 22:54:52,209 INFO L131 PetriNetUnfolder]: For 1883/1946 co-relation queries the response was YES. [2022-09-20 22:54:52,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3038 conditions, 1390 events. 157/1390 cut-off events. For 1883/1946 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8923 event pairs, 48 based on Foata normal form. 7/1318 useless extension candidates. Maximal degree in co-relation 3006. Up to 209 conditions per place. [2022-09-20 22:54:52,219 INFO L137 encePairwiseOnDemand]: 219/230 looper letters, 55 selfloop transitions, 8 changer transitions 17/277 dead transitions. [2022-09-20 22:54:52,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 277 transitions, 1197 flow [2022-09-20 22:54:52,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:54:52,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:54:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2543 transitions. [2022-09-20 22:54:52,224 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8505016722408026 [2022-09-20 22:54:52,224 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2543 transitions. [2022-09-20 22:54:52,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2543 transitions. [2022-09-20 22:54:52,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:52,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2543 transitions. [2022-09-20 22:54:52,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 195.6153846153846) internal successors, (2543), 13 states have internal predecessors, (2543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:52,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:52,232 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:52,232 INFO L175 Difference]: Start difference. First operand has 260 places, 237 transitions, 802 flow. Second operand 13 states and 2543 transitions. [2022-09-20 22:54:52,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 277 transitions, 1197 flow [2022-09-20 22:54:52,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 277 transitions, 1186 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 22:54:52,242 INFO L231 Difference]: Finished difference. Result has 278 places, 237 transitions, 836 flow [2022-09-20 22:54:52,243 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=836, PETRI_PLACES=278, PETRI_TRANSITIONS=237} [2022-09-20 22:54:52,243 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 68 predicate places. [2022-09-20 22:54:52,244 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 237 transitions, 836 flow [2022-09-20 22:54:52,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:52,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:52,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:52,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 22:54:52,244 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:52,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:52,245 INFO L85 PathProgramCache]: Analyzing trace with hash -444962628, now seen corresponding path program 3 times [2022-09-20 22:54:52,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:52,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390806471] [2022-09-20 22:54:52,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:52,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:52,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:52,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:52,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390806471] [2022-09-20 22:54:52,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390806471] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:52,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:52,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:54:52,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752312424] [2022-09-20 22:54:52,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:52,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:54:52,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:52,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:54:52,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:54:52,306 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2022-09-20 22:54:52,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 237 transitions, 836 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:52,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:52,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2022-09-20 22:54:52,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:52,560 INFO L130 PetriNetUnfolder]: 151/1284 cut-off events. [2022-09-20 22:54:52,561 INFO L131 PetriNetUnfolder]: For 2753/2820 co-relation queries the response was YES. [2022-09-20 22:54:52,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3201 conditions, 1284 events. 151/1284 cut-off events. For 2753/2820 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 8084 event pairs, 54 based on Foata normal form. 3/1219 useless extension candidates. Maximal degree in co-relation 3159. Up to 225 conditions per place. [2022-09-20 22:54:52,574 INFO L137 encePairwiseOnDemand]: 218/230 looper letters, 56 selfloop transitions, 9 changer transitions 16/278 dead transitions. [2022-09-20 22:54:52,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 278 transitions, 1344 flow [2022-09-20 22:54:52,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:54:52,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:54:52,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2545 transitions. [2022-09-20 22:54:52,579 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8511705685618729 [2022-09-20 22:54:52,579 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2545 transitions. [2022-09-20 22:54:52,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2545 transitions. [2022-09-20 22:54:52,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:52,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2545 transitions. [2022-09-20 22:54:52,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 195.76923076923077) internal successors, (2545), 13 states have internal predecessors, (2545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:52,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:52,588 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:52,588 INFO L175 Difference]: Start difference. First operand has 278 places, 237 transitions, 836 flow. Second operand 13 states and 2545 transitions. [2022-09-20 22:54:52,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 278 transitions, 1344 flow [2022-09-20 22:54:52,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 278 transitions, 1233 flow, removed 21 selfloop flow, removed 12 redundant places. [2022-09-20 22:54:52,600 INFO L231 Difference]: Finished difference. Result has 279 places, 237 transitions, 841 flow [2022-09-20 22:54:52,601 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=841, PETRI_PLACES=279, PETRI_TRANSITIONS=237} [2022-09-20 22:54:52,601 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 69 predicate places. [2022-09-20 22:54:52,601 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 237 transitions, 841 flow [2022-09-20 22:54:52,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:52,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:52,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:52,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 22:54:52,602 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:52,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:52,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1747428042, now seen corresponding path program 4 times [2022-09-20 22:54:52,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:52,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214033213] [2022-09-20 22:54:52,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:52,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:52,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:52,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:52,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214033213] [2022-09-20 22:54:52,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214033213] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:52,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:52,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:54:52,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680064703] [2022-09-20 22:54:52,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:52,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:54:52,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:52,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:54:52,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:54:52,667 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2022-09-20 22:54:52,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 237 transitions, 841 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:52,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:52,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2022-09-20 22:54:52,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:52,887 INFO L130 PetriNetUnfolder]: 145/1419 cut-off events. [2022-09-20 22:54:52,887 INFO L131 PetriNetUnfolder]: For 3115/3183 co-relation queries the response was YES. [2022-09-20 22:54:52,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3324 conditions, 1419 events. 145/1419 cut-off events. For 3115/3183 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 9238 event pairs, 72 based on Foata normal form. 7/1342 useless extension candidates. Maximal degree in co-relation 3281. Up to 315 conditions per place. [2022-09-20 22:54:52,901 INFO L137 encePairwiseOnDemand]: 221/230 looper letters, 42 selfloop transitions, 10 changer transitions 11/260 dead transitions. [2022-09-20 22:54:52,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 260 transitions, 1197 flow [2022-09-20 22:54:52,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 22:54:52,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 22:54:52,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2150 transitions. [2022-09-20 22:54:52,905 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.849802371541502 [2022-09-20 22:54:52,905 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2150 transitions. [2022-09-20 22:54:52,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2150 transitions. [2022-09-20 22:54:52,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:52,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2150 transitions. [2022-09-20 22:54:52,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 195.45454545454547) internal successors, (2150), 11 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:52,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 230.0) internal successors, (2760), 12 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:52,912 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 230.0) internal successors, (2760), 12 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:52,913 INFO L175 Difference]: Start difference. First operand has 279 places, 237 transitions, 841 flow. Second operand 11 states and 2150 transitions. [2022-09-20 22:54:52,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 260 transitions, 1197 flow [2022-09-20 22:54:52,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 260 transitions, 1103 flow, removed 23 selfloop flow, removed 13 redundant places. [2022-09-20 22:54:52,940 INFO L231 Difference]: Finished difference. Result has 277 places, 243 transitions, 911 flow [2022-09-20 22:54:52,941 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=911, PETRI_PLACES=277, PETRI_TRANSITIONS=243} [2022-09-20 22:54:52,941 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 67 predicate places. [2022-09-20 22:54:52,941 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 243 transitions, 911 flow [2022-09-20 22:54:52,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:52,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:52,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:52,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-20 22:54:52,942 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:52,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:52,942 INFO L85 PathProgramCache]: Analyzing trace with hash -878893322, now seen corresponding path program 5 times [2022-09-20 22:54:52,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:52,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836394548] [2022-09-20 22:54:52,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:52,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:53,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:53,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:53,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836394548] [2022-09-20 22:54:53,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836394548] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:53,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:53,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:54:53,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505436844] [2022-09-20 22:54:53,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:53,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:54:53,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:53,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:54:53,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:54:53,021 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2022-09-20 22:54:53,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 243 transitions, 911 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:53,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:53,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2022-09-20 22:54:53,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:53,242 INFO L130 PetriNetUnfolder]: 137/1403 cut-off events. [2022-09-20 22:54:53,242 INFO L131 PetriNetUnfolder]: For 2694/2775 co-relation queries the response was YES. [2022-09-20 22:54:53,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3156 conditions, 1403 events. 137/1403 cut-off events. For 2694/2775 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 9103 event pairs, 68 based on Foata normal form. 11/1332 useless extension candidates. Maximal degree in co-relation 3113. Up to 297 conditions per place. [2022-09-20 22:54:53,257 INFO L137 encePairwiseOnDemand]: 221/230 looper letters, 41 selfloop transitions, 4 changer transitions 18/260 dead transitions. [2022-09-20 22:54:53,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 260 transitions, 1168 flow [2022-09-20 22:54:53,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-20 22:54:53,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-20 22:54:53,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2341 transitions. [2022-09-20 22:54:53,259 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8481884057971014 [2022-09-20 22:54:53,259 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2341 transitions. [2022-09-20 22:54:53,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2341 transitions. [2022-09-20 22:54:53,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:53,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2341 transitions. [2022-09-20 22:54:53,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 195.08333333333334) internal successors, (2341), 12 states have internal predecessors, (2341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:53,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 230.0) internal successors, (2990), 13 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:53,265 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 230.0) internal successors, (2990), 13 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:53,265 INFO L175 Difference]: Start difference. First operand has 277 places, 243 transitions, 911 flow. Second operand 12 states and 2341 transitions. [2022-09-20 22:54:53,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 260 transitions, 1168 flow [2022-09-20 22:54:53,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 260 transitions, 1093 flow, removed 34 selfloop flow, removed 5 redundant places. [2022-09-20 22:54:53,277 INFO L231 Difference]: Finished difference. Result has 284 places, 237 transitions, 831 flow [2022-09-20 22:54:53,278 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=831, PETRI_PLACES=284, PETRI_TRANSITIONS=237} [2022-09-20 22:54:53,278 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 74 predicate places. [2022-09-20 22:54:53,278 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 237 transitions, 831 flow [2022-09-20 22:54:53,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:53,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:53,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:53,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-20 22:54:53,279 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:53,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:53,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1256621916, now seen corresponding path program 6 times [2022-09-20 22:54:53,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:53,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799377680] [2022-09-20 22:54:53,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:53,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:53,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:53,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:53,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799377680] [2022-09-20 22:54:53,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799377680] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:53,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:53,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:54:53,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309102116] [2022-09-20 22:54:53,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:53,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:54:53,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:53,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:54:53,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:54:53,322 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2022-09-20 22:54:53,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 237 transitions, 831 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:53,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:53,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2022-09-20 22:54:53,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:53,531 INFO L130 PetriNetUnfolder]: 129/1288 cut-off events. [2022-09-20 22:54:53,532 INFO L131 PetriNetUnfolder]: For 2526/2604 co-relation queries the response was YES. [2022-09-20 22:54:53,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2888 conditions, 1288 events. 129/1288 cut-off events. For 2526/2604 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7993 event pairs, 60 based on Foata normal form. 5/1215 useless extension candidates. Maximal degree in co-relation 2843. Up to 255 conditions per place. [2022-09-20 22:54:53,546 INFO L137 encePairwiseOnDemand]: 221/230 looper letters, 36 selfloop transitions, 2 changer transitions 19/252 dead transitions. [2022-09-20 22:54:53,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 252 transitions, 1046 flow [2022-09-20 22:54:53,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-20 22:54:53,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-20 22:54:53,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2340 transitions. [2022-09-20 22:54:53,548 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8478260869565217 [2022-09-20 22:54:53,549 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2340 transitions. [2022-09-20 22:54:53,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2340 transitions. [2022-09-20 22:54:53,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:53,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2340 transitions. [2022-09-20 22:54:53,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 195.0) internal successors, (2340), 12 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:53,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 230.0) internal successors, (2990), 13 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:53,554 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 230.0) internal successors, (2990), 13 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:53,554 INFO L175 Difference]: Start difference. First operand has 284 places, 237 transitions, 831 flow. Second operand 12 states and 2340 transitions. [2022-09-20 22:54:53,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 252 transitions, 1046 flow [2022-09-20 22:54:53,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 252 transitions, 978 flow, removed 21 selfloop flow, removed 13 redundant places. [2022-09-20 22:54:53,564 INFO L231 Difference]: Finished difference. Result has 276 places, 229 transitions, 752 flow [2022-09-20 22:54:53,565 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=752, PETRI_PLACES=276, PETRI_TRANSITIONS=229} [2022-09-20 22:54:53,565 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 66 predicate places. [2022-09-20 22:54:53,565 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 229 transitions, 752 flow [2022-09-20 22:54:53,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:53,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:53,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:53,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-20 22:54:53,566 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:53,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:53,566 INFO L85 PathProgramCache]: Analyzing trace with hash -356965902, now seen corresponding path program 4 times [2022-09-20 22:54:53,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:53,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806776553] [2022-09-20 22:54:53,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:53,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:53,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:53,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:53,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806776553] [2022-09-20 22:54:53,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806776553] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:53,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:53,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:54:53,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234145374] [2022-09-20 22:54:53,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:53,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:54:53,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:53,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:54:53,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:54:53,606 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2022-09-20 22:54:53,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 229 transitions, 752 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:53,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:53,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2022-09-20 22:54:53,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:53,805 INFO L130 PetriNetUnfolder]: 123/1192 cut-off events. [2022-09-20 22:54:53,806 INFO L131 PetriNetUnfolder]: For 1719/1777 co-relation queries the response was YES. [2022-09-20 22:54:53,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2569 conditions, 1192 events. 123/1192 cut-off events. For 1719/1777 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 7130 event pairs, 50 based on Foata normal form. 2/1124 useless extension candidates. Maximal degree in co-relation 2528. Up to 218 conditions per place. [2022-09-20 22:54:53,817 INFO L137 encePairwiseOnDemand]: 221/230 looper letters, 37 selfloop transitions, 10 changer transitions 12/254 dead transitions. [2022-09-20 22:54:53,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 254 transitions, 1051 flow [2022-09-20 22:54:53,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-20 22:54:53,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-20 22:54:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2343 transitions. [2022-09-20 22:54:53,820 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8489130434782609 [2022-09-20 22:54:53,820 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2343 transitions. [2022-09-20 22:54:53,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2343 transitions. [2022-09-20 22:54:53,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:53,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2343 transitions. [2022-09-20 22:54:53,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 195.25) internal successors, (2343), 12 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:53,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 230.0) internal successors, (2990), 13 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:53,826 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 230.0) internal successors, (2990), 13 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:53,827 INFO L175 Difference]: Start difference. First operand has 276 places, 229 transitions, 752 flow. Second operand 12 states and 2343 transitions. [2022-09-20 22:54:53,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 254 transitions, 1051 flow [2022-09-20 22:54:53,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 254 transitions, 995 flow, removed 15 selfloop flow, removed 14 redundant places. [2022-09-20 22:54:53,834 INFO L231 Difference]: Finished difference. Result has 268 places, 235 transitions, 816 flow [2022-09-20 22:54:53,835 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=816, PETRI_PLACES=268, PETRI_TRANSITIONS=235} [2022-09-20 22:54:53,836 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 58 predicate places. [2022-09-20 22:54:53,836 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 235 transitions, 816 flow [2022-09-20 22:54:53,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:53,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:53,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:53,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-20 22:54:53,836 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:53,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:53,837 INFO L85 PathProgramCache]: Analyzing trace with hash 180294738, now seen corresponding path program 5 times [2022-09-20 22:54:53,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:53,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643116495] [2022-09-20 22:54:53,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:53,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:53,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:53,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:53,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643116495] [2022-09-20 22:54:53,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643116495] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:53,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:53,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:54:53,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909323089] [2022-09-20 22:54:53,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:53,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:54:53,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:53,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:54:53,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:54:53,890 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2022-09-20 22:54:53,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 235 transitions, 816 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:53,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:53,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2022-09-20 22:54:53,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:54,087 INFO L130 PetriNetUnfolder]: 114/1275 cut-off events. [2022-09-20 22:54:54,088 INFO L131 PetriNetUnfolder]: For 1804/1865 co-relation queries the response was YES. [2022-09-20 22:54:54,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2611 conditions, 1275 events. 114/1275 cut-off events. For 1804/1865 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 7891 event pairs, 50 based on Foata normal form. 10/1210 useless extension candidates. Maximal degree in co-relation 2573. Up to 218 conditions per place. [2022-09-20 22:54:54,099 INFO L137 encePairwiseOnDemand]: 221/230 looper letters, 35 selfloop transitions, 4 changer transitions 16/250 dead transitions. [2022-09-20 22:54:54,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 250 transitions, 1035 flow [2022-09-20 22:54:54,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 22:54:54,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 22:54:54,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2148 transitions. [2022-09-20 22:54:54,101 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8490118577075099 [2022-09-20 22:54:54,101 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2148 transitions. [2022-09-20 22:54:54,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2148 transitions. [2022-09-20 22:54:54,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:54,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2148 transitions. [2022-09-20 22:54:54,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 195.27272727272728) internal successors, (2148), 11 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:54,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 230.0) internal successors, (2760), 12 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:54,106 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 230.0) internal successors, (2760), 12 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:54,106 INFO L175 Difference]: Start difference. First operand has 268 places, 235 transitions, 816 flow. Second operand 11 states and 2148 transitions. [2022-09-20 22:54:54,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 250 transitions, 1035 flow [2022-09-20 22:54:54,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 250 transitions, 1001 flow, removed 17 selfloop flow, removed 3 redundant places. [2022-09-20 22:54:54,116 INFO L231 Difference]: Finished difference. Result has 274 places, 229 transitions, 754 flow [2022-09-20 22:54:54,117 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=754, PETRI_PLACES=274, PETRI_TRANSITIONS=229} [2022-09-20 22:54:54,117 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 64 predicate places. [2022-09-20 22:54:54,117 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 229 transitions, 754 flow [2022-09-20 22:54:54,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:54,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:54,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:54,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-20 22:54:54,118 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:54,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:54,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1551414180, now seen corresponding path program 2 times [2022-09-20 22:54:54,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:54,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158860940] [2022-09-20 22:54:54,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:54,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:54,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:54,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:54,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158860940] [2022-09-20 22:54:54,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158860940] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:54,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:54,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:54:54,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135711479] [2022-09-20 22:54:54,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:54,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:54:54,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:54,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:54:54,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:54:54,167 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 230 [2022-09-20 22:54:54,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 229 transitions, 754 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:54,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:54,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 230 [2022-09-20 22:54:54,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:54,336 INFO L130 PetriNetUnfolder]: 114/1201 cut-off events. [2022-09-20 22:54:54,337 INFO L131 PetriNetUnfolder]: For 1533/1582 co-relation queries the response was YES. [2022-09-20 22:54:54,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2249 conditions, 1201 events. 114/1201 cut-off events. For 1533/1582 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7701 event pairs, 23 based on Foata normal form. 9/1125 useless extension candidates. Maximal degree in co-relation 2208. Up to 130 conditions per place. [2022-09-20 22:54:54,346 INFO L137 encePairwiseOnDemand]: 221/230 looper letters, 51 selfloop transitions, 14 changer transitions 0/254 dead transitions. [2022-09-20 22:54:54,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 254 transitions, 969 flow [2022-09-20 22:54:54,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 22:54:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 22:54:54,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1384 transitions. [2022-09-20 22:54:54,348 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8596273291925466 [2022-09-20 22:54:54,348 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1384 transitions. [2022-09-20 22:54:54,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1384 transitions. [2022-09-20 22:54:54,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:54,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1384 transitions. [2022-09-20 22:54:54,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 197.71428571428572) internal successors, (1384), 7 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:54,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:54,351 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:54,352 INFO L175 Difference]: Start difference. First operand has 274 places, 229 transitions, 754 flow. Second operand 7 states and 1384 transitions. [2022-09-20 22:54:54,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 254 transitions, 969 flow [2022-09-20 22:54:54,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 254 transitions, 925 flow, removed 16 selfloop flow, removed 11 redundant places. [2022-09-20 22:54:54,359 INFO L231 Difference]: Finished difference. Result has 261 places, 231 transitions, 784 flow [2022-09-20 22:54:54,360 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=784, PETRI_PLACES=261, PETRI_TRANSITIONS=231} [2022-09-20 22:54:54,360 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 51 predicate places. [2022-09-20 22:54:54,361 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 231 transitions, 784 flow [2022-09-20 22:54:54,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:54,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:54,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:54,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-20 22:54:54,362 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:54,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:54,362 INFO L85 PathProgramCache]: Analyzing trace with hash -388103396, now seen corresponding path program 6 times [2022-09-20 22:54:54,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:54,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528546794] [2022-09-20 22:54:54,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:54,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:54,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:54,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:54,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528546794] [2022-09-20 22:54:54,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528546794] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:54,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:54,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:54:54,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945876318] [2022-09-20 22:54:54,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:54,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:54:54,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:54,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:54:54,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:54:54,403 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2022-09-20 22:54:54,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 231 transitions, 784 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:54,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:54,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2022-09-20 22:54:54,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:54,586 INFO L130 PetriNetUnfolder]: 98/1174 cut-off events. [2022-09-20 22:54:54,586 INFO L131 PetriNetUnfolder]: For 1219/1272 co-relation queries the response was YES. [2022-09-20 22:54:54,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2160 conditions, 1174 events. 98/1174 cut-off events. For 1219/1272 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 7032 event pairs, 44 based on Foata normal form. 4/1104 useless extension candidates. Maximal degree in co-relation 2125. Up to 164 conditions per place. [2022-09-20 22:54:54,596 INFO L137 encePairwiseOnDemand]: 221/230 looper letters, 30 selfloop transitions, 2 changer transitions 19/246 dead transitions. [2022-09-20 22:54:54,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 246 transitions, 964 flow [2022-09-20 22:54:54,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-20 22:54:54,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-20 22:54:54,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2340 transitions. [2022-09-20 22:54:54,598 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8478260869565217 [2022-09-20 22:54:54,598 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2340 transitions. [2022-09-20 22:54:54,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2340 transitions. [2022-09-20 22:54:54,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:54,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2340 transitions. [2022-09-20 22:54:54,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 195.0) internal successors, (2340), 12 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:54,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 230.0) internal successors, (2990), 13 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:54,603 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 230.0) internal successors, (2990), 13 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:54,603 INFO L175 Difference]: Start difference. First operand has 261 places, 231 transitions, 784 flow. Second operand 12 states and 2340 transitions. [2022-09-20 22:54:54,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 246 transitions, 964 flow [2022-09-20 22:54:54,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 246 transitions, 945 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-09-20 22:54:54,610 INFO L231 Difference]: Finished difference. Result has 274 places, 223 transitions, 724 flow [2022-09-20 22:54:54,610 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=724, PETRI_PLACES=274, PETRI_TRANSITIONS=223} [2022-09-20 22:54:54,610 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 64 predicate places. [2022-09-20 22:54:54,611 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 223 transitions, 724 flow [2022-09-20 22:54:54,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:54,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:54,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:54,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-20 22:54:54,611 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:54,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:54,612 INFO L85 PathProgramCache]: Analyzing trace with hash 467707876, now seen corresponding path program 1 times [2022-09-20 22:54:54,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:54,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765820941] [2022-09-20 22:54:54,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:54,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:54,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:54,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:54,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765820941] [2022-09-20 22:54:54,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765820941] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:54,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:54,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 22:54:54,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435359436] [2022-09-20 22:54:54,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:54,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 22:54:54,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:54,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 22:54:54,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-20 22:54:54,648 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 230 [2022-09-20 22:54:54,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 223 transitions, 724 flow. Second operand has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:54,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:54,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 230 [2022-09-20 22:54:54,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:54,880 INFO L130 PetriNetUnfolder]: 138/2087 cut-off events. [2022-09-20 22:54:54,880 INFO L131 PetriNetUnfolder]: For 1520/1547 co-relation queries the response was YES. [2022-09-20 22:54:54,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3356 conditions, 2087 events. 138/2087 cut-off events. For 1520/1547 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 14963 event pairs, 61 based on Foata normal form. 1/1920 useless extension candidates. Maximal degree in co-relation 3315. Up to 121 conditions per place. [2022-09-20 22:54:54,900 INFO L137 encePairwiseOnDemand]: 223/230 looper letters, 27 selfloop transitions, 5 changer transitions 3/242 dead transitions. [2022-09-20 22:54:54,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 242 transitions, 836 flow [2022-09-20 22:54:54,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 22:54:54,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 22:54:54,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1242 transitions. [2022-09-20 22:54:54,901 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-09-20 22:54:54,901 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1242 transitions. [2022-09-20 22:54:54,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1242 transitions. [2022-09-20 22:54:54,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:54,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1242 transitions. [2022-09-20 22:54:54,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.0) internal successors, (1242), 6 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:54,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 230.0) internal successors, (1610), 7 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:54,904 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 230.0) internal successors, (1610), 7 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:54,904 INFO L175 Difference]: Start difference. First operand has 274 places, 223 transitions, 724 flow. Second operand 6 states and 1242 transitions. [2022-09-20 22:54:54,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 242 transitions, 836 flow [2022-09-20 22:54:54,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 242 transitions, 795 flow, removed 10 selfloop flow, removed 14 redundant places. [2022-09-20 22:54:54,913 INFO L231 Difference]: Finished difference. Result has 256 places, 225 transitions, 709 flow [2022-09-20 22:54:54,914 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=709, PETRI_PLACES=256, PETRI_TRANSITIONS=225} [2022-09-20 22:54:54,914 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 46 predicate places. [2022-09-20 22:54:54,914 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 225 transitions, 709 flow [2022-09-20 22:54:54,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:54,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:54,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:54,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-20 22:54:54,915 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:54,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:54,915 INFO L85 PathProgramCache]: Analyzing trace with hash -253731166, now seen corresponding path program 1 times [2022-09-20 22:54:54,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:54,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248726081] [2022-09-20 22:54:54,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:54,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:54,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:54,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:54,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248726081] [2022-09-20 22:54:54,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248726081] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:54:54,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411638112] [2022-09-20 22:54:54,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:54,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:54:54,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:54:54,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:54:54,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 22:54:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:55,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-20 22:54:55,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:54:55,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:55,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 22:54:55,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:55,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411638112] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 22:54:55,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 22:54:55,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-09-20 22:54:55,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890517193] [2022-09-20 22:54:55,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 22:54:55,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:54:55,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:55,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:54:55,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:54:55,232 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 230 [2022-09-20 22:54:55,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 225 transitions, 709 flow. Second operand has 9 states, 9 states have (on average 203.22222222222223) internal successors, (1829), 9 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:55,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:55,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 230 [2022-09-20 22:54:55,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:55,664 INFO L130 PetriNetUnfolder]: 208/3300 cut-off events. [2022-09-20 22:54:55,665 INFO L131 PetriNetUnfolder]: For 1526/1574 co-relation queries the response was YES. [2022-09-20 22:54:55,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4881 conditions, 3300 events. 208/3300 cut-off events. For 1526/1574 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 26012 event pairs, 48 based on Foata normal form. 9/3104 useless extension candidates. Maximal degree in co-relation 4847. Up to 83 conditions per place. [2022-09-20 22:54:55,700 INFO L137 encePairwiseOnDemand]: 222/230 looper letters, 51 selfloop transitions, 31 changer transitions 1/290 dead transitions. [2022-09-20 22:54:55,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 290 transitions, 1089 flow [2022-09-20 22:54:55,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-20 22:54:55,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-20 22:54:55,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2890 transitions. [2022-09-20 22:54:55,702 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8975155279503105 [2022-09-20 22:54:55,702 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2890 transitions. [2022-09-20 22:54:55,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2890 transitions. [2022-09-20 22:54:55,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:55,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2890 transitions. [2022-09-20 22:54:55,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 206.42857142857142) internal successors, (2890), 14 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:55,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 230.0) internal successors, (3450), 15 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:55,709 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 230.0) internal successors, (3450), 15 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:55,709 INFO L175 Difference]: Start difference. First operand has 256 places, 225 transitions, 709 flow. Second operand 14 states and 2890 transitions. [2022-09-20 22:54:55,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 290 transitions, 1089 flow [2022-09-20 22:54:55,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 290 transitions, 1062 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-09-20 22:54:55,719 INFO L231 Difference]: Finished difference. Result has 272 places, 257 transitions, 921 flow [2022-09-20 22:54:55,719 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=921, PETRI_PLACES=272, PETRI_TRANSITIONS=257} [2022-09-20 22:54:55,720 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 62 predicate places. [2022-09-20 22:54:55,720 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 257 transitions, 921 flow [2022-09-20 22:54:55,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 203.22222222222223) internal successors, (1829), 9 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:55,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:55,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:55,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-20 22:54:55,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:54:55,939 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:55,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:55,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1822731306, now seen corresponding path program 2 times [2022-09-20 22:54:55,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:55,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390324539] [2022-09-20 22:54:55,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:55,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:55,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:55,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:55,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390324539] [2022-09-20 22:54:55,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390324539] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:55,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:55,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 22:54:55,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898448282] [2022-09-20 22:54:55,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:55,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 22:54:55,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:55,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 22:54:55,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-20 22:54:55,981 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 230 [2022-09-20 22:54:55,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 257 transitions, 921 flow. Second operand has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:55,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:55,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 230 [2022-09-20 22:54:55,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:56,466 INFO L130 PetriNetUnfolder]: 266/4334 cut-off events. [2022-09-20 22:54:56,466 INFO L131 PetriNetUnfolder]: For 2464/2528 co-relation queries the response was YES. [2022-09-20 22:54:56,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6703 conditions, 4334 events. 266/4334 cut-off events. For 2464/2528 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 37649 event pairs, 119 based on Foata normal form. 6/4049 useless extension candidates. Maximal degree in co-relation 6663. Up to 193 conditions per place. [2022-09-20 22:54:56,508 INFO L137 encePairwiseOnDemand]: 222/230 looper letters, 71 selfloop transitions, 23 changer transitions 3/304 dead transitions. [2022-09-20 22:54:56,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 304 transitions, 1351 flow [2022-09-20 22:54:56,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 22:54:56,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 22:54:56,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1256 transitions. [2022-09-20 22:54:56,510 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9101449275362319 [2022-09-20 22:54:56,510 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1256 transitions. [2022-09-20 22:54:56,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1256 transitions. [2022-09-20 22:54:56,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:56,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1256 transitions. [2022-09-20 22:54:56,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 209.33333333333334) internal successors, (1256), 6 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:56,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 230.0) internal successors, (1610), 7 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:56,513 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 230.0) internal successors, (1610), 7 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:56,513 INFO L175 Difference]: Start difference. First operand has 272 places, 257 transitions, 921 flow. Second operand 6 states and 1256 transitions. [2022-09-20 22:54:56,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 304 transitions, 1351 flow [2022-09-20 22:54:56,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 304 transitions, 1347 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-09-20 22:54:56,525 INFO L231 Difference]: Finished difference. Result has 280 places, 267 transitions, 1082 flow [2022-09-20 22:54:56,526 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1082, PETRI_PLACES=280, PETRI_TRANSITIONS=267} [2022-09-20 22:54:56,526 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 70 predicate places. [2022-09-20 22:54:56,526 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 267 transitions, 1082 flow [2022-09-20 22:54:56,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:56,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:56,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:56,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-20 22:54:56,527 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:56,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:56,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1170177588, now seen corresponding path program 1 times [2022-09-20 22:54:56,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:56,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947467325] [2022-09-20 22:54:56,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:56,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:56,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:56,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:56,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947467325] [2022-09-20 22:54:56,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947467325] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:54:56,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:54:56,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 22:54:56,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84544255] [2022-09-20 22:54:56,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:54:56,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 22:54:56,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:56,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 22:54:56,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-20 22:54:56,565 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 230 [2022-09-20 22:54:56,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 267 transitions, 1082 flow. Second operand has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:56,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:56,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 230 [2022-09-20 22:54:56,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:57,044 INFO L130 PetriNetUnfolder]: 265/4046 cut-off events. [2022-09-20 22:54:57,044 INFO L131 PetriNetUnfolder]: For 3241/3293 co-relation queries the response was YES. [2022-09-20 22:54:57,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6826 conditions, 4046 events. 265/4046 cut-off events. For 3241/3293 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 34667 event pairs, 120 based on Foata normal form. 6/3791 useless extension candidates. Maximal degree in co-relation 6782. Up to 205 conditions per place. [2022-09-20 22:54:57,083 INFO L137 encePairwiseOnDemand]: 223/230 looper letters, 57 selfloop transitions, 15 changer transitions 5/284 dead transitions. [2022-09-20 22:54:57,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 284 transitions, 1343 flow [2022-09-20 22:54:57,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 22:54:57,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 22:54:57,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1243 transitions. [2022-09-20 22:54:57,084 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9007246376811594 [2022-09-20 22:54:57,084 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1243 transitions. [2022-09-20 22:54:57,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1243 transitions. [2022-09-20 22:54:57,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:57,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1243 transitions. [2022-09-20 22:54:57,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.16666666666666) internal successors, (1243), 6 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:57,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 230.0) internal successors, (1610), 7 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:57,087 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 230.0) internal successors, (1610), 7 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:57,087 INFO L175 Difference]: Start difference. First operand has 280 places, 267 transitions, 1082 flow. Second operand 6 states and 1243 transitions. [2022-09-20 22:54:57,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 284 transitions, 1343 flow [2022-09-20 22:54:57,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 284 transitions, 1320 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-09-20 22:54:57,105 INFO L231 Difference]: Finished difference. Result has 286 places, 267 transitions, 1098 flow [2022-09-20 22:54:57,105 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1098, PETRI_PLACES=286, PETRI_TRANSITIONS=267} [2022-09-20 22:54:57,105 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 76 predicate places. [2022-09-20 22:54:57,105 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 267 transitions, 1098 flow [2022-09-20 22:54:57,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:57,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:57,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:57,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-20 22:54:57,106 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:57,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:57,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1125830134, now seen corresponding path program 3 times [2022-09-20 22:54:57,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:57,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288528230] [2022-09-20 22:54:57,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:57,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:57,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:57,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:57,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288528230] [2022-09-20 22:54:57,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288528230] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:54:57,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632095565] [2022-09-20 22:54:57,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-20 22:54:57,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:54:57,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:54:57,155 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:54:57,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 22:54:57,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-09-20 22:54:57,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 22:54:57,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-20 22:54:57,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:54:57,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:57,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 22:54:57,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:57,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632095565] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 22:54:57,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 22:54:57,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-09-20 22:54:57,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488833767] [2022-09-20 22:54:57,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 22:54:57,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 22:54:57,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:57,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 22:54:57,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-09-20 22:54:57,460 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 230 [2022-09-20 22:54:57,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 267 transitions, 1098 flow. Second operand has 11 states, 11 states have (on average 203.45454545454547) internal successors, (2238), 11 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:57,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:57,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 230 [2022-09-20 22:54:57,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:58,382 INFO L130 PetriNetUnfolder]: 340/5501 cut-off events. [2022-09-20 22:54:58,382 INFO L131 PetriNetUnfolder]: For 4057/4136 co-relation queries the response was YES. [2022-09-20 22:54:58,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8900 conditions, 5501 events. 340/5501 cut-off events. For 4057/4136 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 52110 event pairs, 117 based on Foata normal form. 14/5154 useless extension candidates. Maximal degree in co-relation 8854. Up to 158 conditions per place. [2022-09-20 22:54:58,410 INFO L137 encePairwiseOnDemand]: 222/230 looper letters, 60 selfloop transitions, 58 changer transitions 0/325 dead transitions. [2022-09-20 22:54:58,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 325 transitions, 1622 flow [2022-09-20 22:54:58,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:54:58,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:54:58,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2695 transitions. [2022-09-20 22:54:58,422 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9013377926421404 [2022-09-20 22:54:58,422 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2695 transitions. [2022-09-20 22:54:58,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2695 transitions. [2022-09-20 22:54:58,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:58,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2695 transitions. [2022-09-20 22:54:58,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 207.30769230769232) internal successors, (2695), 13 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:58,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:58,428 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:58,428 INFO L175 Difference]: Start difference. First operand has 286 places, 267 transitions, 1098 flow. Second operand 13 states and 2695 transitions. [2022-09-20 22:54:58,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 325 transitions, 1622 flow [2022-09-20 22:54:58,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 325 transitions, 1601 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-09-20 22:54:58,449 INFO L231 Difference]: Finished difference. Result has 300 places, 289 transitions, 1436 flow [2022-09-20 22:54:58,449 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1436, PETRI_PLACES=300, PETRI_TRANSITIONS=289} [2022-09-20 22:54:58,451 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 90 predicate places. [2022-09-20 22:54:58,451 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 289 transitions, 1436 flow [2022-09-20 22:54:58,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 203.45454545454547) internal successors, (2238), 11 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:58,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:58,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:58,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-20 22:54:58,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-09-20 22:54:58,667 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:54:58,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:54:58,668 INFO L85 PathProgramCache]: Analyzing trace with hash -316570432, now seen corresponding path program 2 times [2022-09-20 22:54:58,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:54:58,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118431529] [2022-09-20 22:54:58,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:54:58,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:54:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:54:58,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:58,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:54:58,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118431529] [2022-09-20 22:54:58,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118431529] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:54:58,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665546591] [2022-09-20 22:54:58,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 22:54:58,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:54:58,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:54:58,746 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:54:58,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-20 22:54:58,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-20 22:54:58,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 22:54:58,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-20 22:54:58,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:54:58,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:58,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 22:54:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:54:58,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665546591] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 22:54:58,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 22:54:58,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-09-20 22:54:58,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716021987] [2022-09-20 22:54:58,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 22:54:58,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:54:58,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:54:58,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:54:58,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:54:58,942 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 230 [2022-09-20 22:54:58,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 289 transitions, 1436 flow. Second operand has 9 states, 9 states have (on average 203.22222222222223) internal successors, (1829), 9 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:58,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:54:58,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 230 [2022-09-20 22:54:58,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:54:59,870 INFO L130 PetriNetUnfolder]: 373/6229 cut-off events. [2022-09-20 22:54:59,871 INFO L131 PetriNetUnfolder]: For 5742/5816 co-relation queries the response was YES. [2022-09-20 22:54:59,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10389 conditions, 6229 events. 373/6229 cut-off events. For 5742/5816 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 61602 event pairs, 122 based on Foata normal form. 8/5830 useless extension candidates. Maximal degree in co-relation 10339. Up to 169 conditions per place. [2022-09-20 22:54:59,912 INFO L137 encePairwiseOnDemand]: 222/230 looper letters, 71 selfloop transitions, 83 changer transitions 2/363 dead transitions. [2022-09-20 22:54:59,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 363 transitions, 2311 flow [2022-09-20 22:54:59,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-20 22:54:59,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-20 22:54:59,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2887 transitions. [2022-09-20 22:54:59,915 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.896583850931677 [2022-09-20 22:54:59,915 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2887 transitions. [2022-09-20 22:54:59,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2887 transitions. [2022-09-20 22:54:59,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:54:59,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2887 transitions. [2022-09-20 22:54:59,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 206.21428571428572) internal successors, (2887), 14 states have internal predecessors, (2887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:59,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 230.0) internal successors, (3450), 15 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:59,921 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 230.0) internal successors, (3450), 15 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:59,921 INFO L175 Difference]: Start difference. First operand has 300 places, 289 transitions, 1436 flow. Second operand 14 states and 2887 transitions. [2022-09-20 22:54:59,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 363 transitions, 2311 flow [2022-09-20 22:54:59,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 363 transitions, 2299 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-09-20 22:54:59,946 INFO L231 Difference]: Finished difference. Result has 320 places, 329 transitions, 2103 flow [2022-09-20 22:54:59,947 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2103, PETRI_PLACES=320, PETRI_TRANSITIONS=329} [2022-09-20 22:54:59,947 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 110 predicate places. [2022-09-20 22:54:59,947 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 329 transitions, 2103 flow [2022-09-20 22:54:59,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 203.22222222222223) internal successors, (1829), 9 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:54:59,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:54:59,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:54:59,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-09-20 22:55:00,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:55:00,163 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:55:00,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:55:00,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1726305042, now seen corresponding path program 3 times [2022-09-20 22:55:00,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:55:00,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160806756] [2022-09-20 22:55:00,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:55:00,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:55:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:55:00,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:55:00,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:55:00,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160806756] [2022-09-20 22:55:00,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160806756] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:55:00,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:55:00,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 22:55:00,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568684912] [2022-09-20 22:55:00,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:55:00,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 22:55:00,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:55:00,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 22:55:00,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-20 22:55:00,206 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 230 [2022-09-20 22:55:00,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 329 transitions, 2103 flow. Second operand has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:00,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:55:00,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 230 [2022-09-20 22:55:00,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:55:01,065 INFO L130 PetriNetUnfolder]: 345/5398 cut-off events. [2022-09-20 22:55:01,065 INFO L131 PetriNetUnfolder]: For 6526/6587 co-relation queries the response was YES. [2022-09-20 22:55:01,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9517 conditions, 5398 events. 345/5398 cut-off events. For 6526/6587 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 50816 event pairs, 166 based on Foata normal form. 5/5031 useless extension candidates. Maximal degree in co-relation 9459. Up to 340 conditions per place. [2022-09-20 22:55:01,122 INFO L137 encePairwiseOnDemand]: 222/230 looper letters, 106 selfloop transitions, 26 changer transitions 5/344 dead transitions. [2022-09-20 22:55:01,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 344 transitions, 2485 flow [2022-09-20 22:55:01,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 22:55:01,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 22:55:01,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1046 transitions. [2022-09-20 22:55:01,124 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9095652173913044 [2022-09-20 22:55:01,124 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1046 transitions. [2022-09-20 22:55:01,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1046 transitions. [2022-09-20 22:55:01,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:55:01,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1046 transitions. [2022-09-20 22:55:01,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:01,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:01,126 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:01,126 INFO L175 Difference]: Start difference. First operand has 320 places, 329 transitions, 2103 flow. Second operand 5 states and 1046 transitions. [2022-09-20 22:55:01,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 344 transitions, 2485 flow [2022-09-20 22:55:01,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 344 transitions, 2381 flow, removed 37 selfloop flow, removed 1 redundant places. [2022-09-20 22:55:01,159 INFO L231 Difference]: Finished difference. Result has 325 places, 329 transitions, 2068 flow [2022-09-20 22:55:01,159 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1999, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2068, PETRI_PLACES=325, PETRI_TRANSITIONS=329} [2022-09-20 22:55:01,159 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 115 predicate places. [2022-09-20 22:55:01,159 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 329 transitions, 2068 flow [2022-09-20 22:55:01,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:01,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:55:01,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:55:01,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-09-20 22:55:01,160 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:55:01,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:55:01,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1302795472, now seen corresponding path program 4 times [2022-09-20 22:55:01,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:55:01,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734817147] [2022-09-20 22:55:01,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:55:01,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:55:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:55:01,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:55:01,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:55:01,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734817147] [2022-09-20 22:55:01,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734817147] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:55:01,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2755342] [2022-09-20 22:55:01,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-20 22:55:01,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:55:01,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:55:01,209 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:55:01,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-20 22:55:01,278 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-20 22:55:01,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 22:55:01,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-20 22:55:01,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:55:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:55:01,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 22:55:01,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:55:01,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2755342] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 22:55:01,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 22:55:01,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-09-20 22:55:01,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029267738] [2022-09-20 22:55:01,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 22:55:01,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 22:55:01,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:55:01,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 22:55:01,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-09-20 22:55:01,615 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 230 [2022-09-20 22:55:01,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 329 transitions, 2068 flow. Second operand has 11 states, 11 states have (on average 203.45454545454547) internal successors, (2238), 11 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:01,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:55:01,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 230 [2022-09-20 22:55:01,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:55:02,505 INFO L130 PetriNetUnfolder]: 336/5597 cut-off events. [2022-09-20 22:55:02,505 INFO L131 PetriNetUnfolder]: For 6395/6450 co-relation queries the response was YES. [2022-09-20 22:55:02,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9673 conditions, 5597 events. 336/5597 cut-off events. For 6395/6450 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 53572 event pairs, 152 based on Foata normal form. 5/5226 useless extension candidates. Maximal degree in co-relation 9613. Up to 266 conditions per place. [2022-09-20 22:55:02,545 INFO L137 encePairwiseOnDemand]: 222/230 looper letters, 95 selfloop transitions, 57 changer transitions 1/360 dead transitions. [2022-09-20 22:55:02,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 360 transitions, 2591 flow [2022-09-20 22:55:02,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 22:55:02,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 22:55:02,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1865 transitions. [2022-09-20 22:55:02,546 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9009661835748792 [2022-09-20 22:55:02,547 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1865 transitions. [2022-09-20 22:55:02,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1865 transitions. [2022-09-20 22:55:02,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:55:02,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1865 transitions. [2022-09-20 22:55:02,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 207.22222222222223) internal successors, (1865), 9 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:02,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 230.0) internal successors, (2300), 10 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:02,550 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 230.0) internal successors, (2300), 10 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:02,550 INFO L175 Difference]: Start difference. First operand has 325 places, 329 transitions, 2068 flow. Second operand 9 states and 1865 transitions. [2022-09-20 22:55:02,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 360 transitions, 2591 flow [2022-09-20 22:55:02,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 360 transitions, 2518 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-09-20 22:55:02,579 INFO L231 Difference]: Finished difference. Result has 331 places, 341 transitions, 2316 flow [2022-09-20 22:55:02,580 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=2001, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2316, PETRI_PLACES=331, PETRI_TRANSITIONS=341} [2022-09-20 22:55:02,580 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 121 predicate places. [2022-09-20 22:55:02,580 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 341 transitions, 2316 flow [2022-09-20 22:55:02,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 203.45454545454547) internal successors, (2238), 11 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:02,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:55:02,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:55:02,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-20 22:55:02,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:55:02,797 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:55:02,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:55:02,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1843719520, now seen corresponding path program 5 times [2022-09-20 22:55:02,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:55:02,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40989518] [2022-09-20 22:55:02,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:55:02,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:55:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:55:02,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:55:02,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:55:02,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40989518] [2022-09-20 22:55:02,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40989518] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:55:02,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819868463] [2022-09-20 22:55:02,845 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-09-20 22:55:02,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:55:02,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:55:02,846 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:55:02,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-20 22:55:02,916 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-20 22:55:02,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 22:55:02,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-20 22:55:02,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:55:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:55:03,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 22:55:03,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:55:03,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819868463] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 22:55:03,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 22:55:03,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-09-20 22:55:03,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509592634] [2022-09-20 22:55:03,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 22:55:03,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 22:55:03,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:55:03,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 22:55:03,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-09-20 22:55:03,087 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 230 [2022-09-20 22:55:03,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 341 transitions, 2316 flow. Second operand has 11 states, 11 states have (on average 203.36363636363637) internal successors, (2237), 11 states have internal predecessors, (2237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:03,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:55:03,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 230 [2022-09-20 22:55:03,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:55:03,911 INFO L130 PetriNetUnfolder]: 298/5148 cut-off events. [2022-09-20 22:55:03,911 INFO L131 PetriNetUnfolder]: For 6246/6303 co-relation queries the response was YES. [2022-09-20 22:55:03,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8894 conditions, 5148 events. 298/5148 cut-off events. For 6246/6303 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 48700 event pairs, 116 based on Foata normal form. 8/4808 useless extension candidates. Maximal degree in co-relation 8832. Up to 170 conditions per place. [2022-09-20 22:55:03,972 INFO L137 encePairwiseOnDemand]: 222/230 looper letters, 81 selfloop transitions, 86 changer transitions 5/371 dead transitions. [2022-09-20 22:55:03,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 371 transitions, 2807 flow [2022-09-20 22:55:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:55:03,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:55:03,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2684 transitions. [2022-09-20 22:55:03,974 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8976588628762542 [2022-09-20 22:55:03,974 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2684 transitions. [2022-09-20 22:55:03,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2684 transitions. [2022-09-20 22:55:03,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:55:03,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2684 transitions. [2022-09-20 22:55:03,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 206.46153846153845) internal successors, (2684), 13 states have internal predecessors, (2684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:03,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:03,978 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:03,978 INFO L175 Difference]: Start difference. First operand has 331 places, 341 transitions, 2316 flow. Second operand 13 states and 2684 transitions. [2022-09-20 22:55:03,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 371 transitions, 2807 flow [2022-09-20 22:55:04,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 371 transitions, 2604 flow, removed 37 selfloop flow, removed 12 redundant places. [2022-09-20 22:55:04,005 INFO L231 Difference]: Finished difference. Result has 329 places, 339 transitions, 2294 flow [2022-09-20 22:55:04,006 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2294, PETRI_PLACES=329, PETRI_TRANSITIONS=339} [2022-09-20 22:55:04,006 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 119 predicate places. [2022-09-20 22:55:04,006 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 339 transitions, 2294 flow [2022-09-20 22:55:04,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 203.36363636363637) internal successors, (2237), 11 states have internal predecessors, (2237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:04,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:55:04,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:55:04,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-20 22:55:04,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-09-20 22:55:04,212 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:55:04,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:55:04,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1794637616, now seen corresponding path program 4 times [2022-09-20 22:55:04,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:55:04,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564602629] [2022-09-20 22:55:04,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:55:04,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:55:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:55:04,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:55:04,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:55:04,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564602629] [2022-09-20 22:55:04,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564602629] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:55:04,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54395469] [2022-09-20 22:55:04,255 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-20 22:55:04,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:55:04,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:55:04,256 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:55:04,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-20 22:55:04,318 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-20 22:55:04,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 22:55:04,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-20 22:55:04,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:55:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:55:04,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 22:55:04,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:55:04,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54395469] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 22:55:04,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 22:55:04,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-09-20 22:55:04,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154596383] [2022-09-20 22:55:04,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 22:55:04,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 22:55:04,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:55:04,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 22:55:04,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-09-20 22:55:04,530 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 230 [2022-09-20 22:55:04,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 339 transitions, 2294 flow. Second operand has 11 states, 11 states have (on average 203.54545454545453) internal successors, (2239), 11 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:04,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:55:04,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 230 [2022-09-20 22:55:04,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:55:05,193 INFO L130 PetriNetUnfolder]: 276/4899 cut-off events. [2022-09-20 22:55:05,193 INFO L131 PetriNetUnfolder]: For 5555/5598 co-relation queries the response was YES. [2022-09-20 22:55:05,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8239 conditions, 4899 events. 276/4899 cut-off events. For 5555/5598 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 45226 event pairs, 89 based on Foata normal form. 6/4575 useless extension candidates. Maximal degree in co-relation 8185. Up to 208 conditions per place. [2022-09-20 22:55:05,262 INFO L137 encePairwiseOnDemand]: 222/230 looper letters, 92 selfloop transitions, 65 changer transitions 1/357 dead transitions. [2022-09-20 22:55:05,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 357 transitions, 2686 flow [2022-09-20 22:55:05,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 22:55:05,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 22:55:05,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1865 transitions. [2022-09-20 22:55:05,265 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9009661835748792 [2022-09-20 22:55:05,265 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1865 transitions. [2022-09-20 22:55:05,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1865 transitions. [2022-09-20 22:55:05,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:55:05,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1865 transitions. [2022-09-20 22:55:05,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 207.22222222222223) internal successors, (1865), 9 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:05,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 230.0) internal successors, (2300), 10 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:05,268 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 230.0) internal successors, (2300), 10 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:05,268 INFO L175 Difference]: Start difference. First operand has 329 places, 339 transitions, 2294 flow. Second operand 9 states and 1865 transitions. [2022-09-20 22:55:05,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 357 transitions, 2686 flow [2022-09-20 22:55:05,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 357 transitions, 2534 flow, removed 6 selfloop flow, removed 11 redundant places. [2022-09-20 22:55:05,355 INFO L231 Difference]: Finished difference. Result has 325 places, 339 transitions, 2290 flow [2022-09-20 22:55:05,355 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2290, PETRI_PLACES=325, PETRI_TRANSITIONS=339} [2022-09-20 22:55:05,356 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 115 predicate places. [2022-09-20 22:55:05,356 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 339 transitions, 2290 flow [2022-09-20 22:55:05,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 203.54545454545453) internal successors, (2239), 11 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:05,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:55:05,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:55:05,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-20 22:55:05,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-09-20 22:55:05,570 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:55:05,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:55:05,570 INFO L85 PathProgramCache]: Analyzing trace with hash 631091742, now seen corresponding path program 1 times [2022-09-20 22:55:05,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:55:05,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842856395] [2022-09-20 22:55:05,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:55:05,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:55:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:55:05,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:55:05,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:55:05,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842856395] [2022-09-20 22:55:05,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842856395] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:55:05,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190911974] [2022-09-20 22:55:05,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:55:05,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:55:05,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:55:05,732 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:55:05,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-20 22:55:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:55:05,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 21 conjunts are in the unsatisfiable core [2022-09-20 22:55:05,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:55:06,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:55:06,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 22:55:06,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:55:06,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190911974] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 22:55:06,787 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 22:55:06,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-09-20 22:55:06,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56058285] [2022-09-20 22:55:06,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 22:55:06,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-09-20 22:55:06,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:55:06,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-09-20 22:55:06,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2022-09-20 22:55:06,790 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 230 [2022-09-20 22:55:06,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 339 transitions, 2290 flow. Second operand has 39 states, 39 states have (on average 165.53846153846155) internal successors, (6456), 39 states have internal predecessors, (6456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:06,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:55:06,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 230 [2022-09-20 22:55:06,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:55:17,689 INFO L130 PetriNetUnfolder]: 6483/38025 cut-off events. [2022-09-20 22:55:17,690 INFO L131 PetriNetUnfolder]: For 31051/31212 co-relation queries the response was YES. [2022-09-20 22:55:18,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69328 conditions, 38025 events. 6483/38025 cut-off events. For 31051/31212 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 516641 event pairs, 948 based on Foata normal form. 34/36006 useless extension candidates. Maximal degree in co-relation 69279. Up to 5693 conditions per place. [2022-09-20 22:55:18,181 INFO L137 encePairwiseOnDemand]: 199/230 looper letters, 580 selfloop transitions, 228 changer transitions 9/1098 dead transitions. [2022-09-20 22:55:18,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1098 transitions, 5929 flow [2022-09-20 22:55:18,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-09-20 22:55:18,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2022-09-20 22:55:18,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 21840 transitions. [2022-09-20 22:55:18,193 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7360970677451971 [2022-09-20 22:55:18,194 INFO L72 ComplementDD]: Start complementDD. Operand 129 states and 21840 transitions. [2022-09-20 22:55:18,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 129 states and 21840 transitions. [2022-09-20 22:55:18,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:55:18,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 129 states and 21840 transitions. [2022-09-20 22:55:18,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 130 states, 129 states have (on average 169.30232558139534) internal successors, (21840), 129 states have internal predecessors, (21840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:18,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 130 states, 130 states have (on average 230.0) internal successors, (29900), 130 states have internal predecessors, (29900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:18,237 INFO L81 ComplementDD]: Finished complementDD. Result has 130 states, 130 states have (on average 230.0) internal successors, (29900), 130 states have internal predecessors, (29900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:18,238 INFO L175 Difference]: Start difference. First operand has 325 places, 339 transitions, 2290 flow. Second operand 129 states and 21840 transitions. [2022-09-20 22:55:18,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 1098 transitions, 5929 flow [2022-09-20 22:55:18,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 1098 transitions, 5685 flow, removed 23 selfloop flow, removed 14 redundant places. [2022-09-20 22:55:18,616 INFO L231 Difference]: Finished difference. Result has 526 places, 578 transitions, 3915 flow [2022-09-20 22:55:18,616 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=129, PETRI_FLOW=3915, PETRI_PLACES=526, PETRI_TRANSITIONS=578} [2022-09-20 22:55:18,616 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 316 predicate places. [2022-09-20 22:55:18,617 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 578 transitions, 3915 flow [2022-09-20 22:55:18,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 165.53846153846155) internal successors, (6456), 39 states have internal predecessors, (6456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:18,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:55:18,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:55:18,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-20 22:55:18,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:55:18,826 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:55:18,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:55:18,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1733552842, now seen corresponding path program 2 times [2022-09-20 22:55:18,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:55:18,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604076206] [2022-09-20 22:55:18,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:55:18,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:55:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:55:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:55:19,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:55:19,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604076206] [2022-09-20 22:55:19,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604076206] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:55:19,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51492483] [2022-09-20 22:55:19,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 22:55:19,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:55:19,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:55:19,015 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:55:19,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-20 22:55:19,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-20 22:55:19,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 22:55:19,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 21 conjunts are in the unsatisfiable core [2022-09-20 22:55:19,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:55:19,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:55:19,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 22:55:20,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:55:20,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51492483] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 22:55:20,091 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 22:55:20,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-09-20 22:55:20,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823849124] [2022-09-20 22:55:20,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 22:55:20,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-09-20 22:55:20,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:55:20,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-09-20 22:55:20,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1366, Unknown=0, NotChecked=0, Total=1482 [2022-09-20 22:55:20,095 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 230 [2022-09-20 22:55:20,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 578 transitions, 3915 flow. Second operand has 39 states, 39 states have (on average 165.53846153846155) internal successors, (6456), 39 states have internal predecessors, (6456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:20,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:55:20,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 230 [2022-09-20 22:55:20,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:55:34,669 INFO L130 PetriNetUnfolder]: 7767/45287 cut-off events. [2022-09-20 22:55:34,669 INFO L131 PetriNetUnfolder]: For 266915/267871 co-relation queries the response was YES. [2022-09-20 22:55:36,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130094 conditions, 45287 events. 7767/45287 cut-off events. For 266915/267871 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 637288 event pairs, 2638 based on Foata normal form. 172/42669 useless extension candidates. Maximal degree in co-relation 129968. Up to 9436 conditions per place. [2022-09-20 22:55:36,349 INFO L137 encePairwiseOnDemand]: 201/230 looper letters, 523 selfloop transitions, 145 changer transitions 5/954 dead transitions. [2022-09-20 22:55:36,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 954 transitions, 8002 flow [2022-09-20 22:55:36,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-09-20 22:55:36,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-09-20 22:55:36,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7735 transitions. [2022-09-20 22:55:36,354 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7473429951690821 [2022-09-20 22:55:36,354 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7735 transitions. [2022-09-20 22:55:36,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7735 transitions. [2022-09-20 22:55:36,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:55:36,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7735 transitions. [2022-09-20 22:55:36,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 171.88888888888889) internal successors, (7735), 45 states have internal predecessors, (7735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:36,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 230.0) internal successors, (10580), 46 states have internal predecessors, (10580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:36,368 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 230.0) internal successors, (10580), 46 states have internal predecessors, (10580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:36,368 INFO L175 Difference]: Start difference. First operand has 526 places, 578 transitions, 3915 flow. Second operand 45 states and 7735 transitions. [2022-09-20 22:55:36,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 954 transitions, 8002 flow [2022-09-20 22:55:38,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 954 transitions, 7671 flow, removed 119 selfloop flow, removed 8 redundant places. [2022-09-20 22:55:38,467 INFO L231 Difference]: Finished difference. Result has 593 places, 678 transitions, 5048 flow [2022-09-20 22:55:38,467 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=3673, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=5048, PETRI_PLACES=593, PETRI_TRANSITIONS=678} [2022-09-20 22:55:38,468 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 383 predicate places. [2022-09-20 22:55:38,468 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 678 transitions, 5048 flow [2022-09-20 22:55:38,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 165.53846153846155) internal successors, (6456), 39 states have internal predecessors, (6456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:38,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:55:38,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:55:38,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-20 22:55:38,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-09-20 22:55:38,686 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:55:38,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:55:38,687 INFO L85 PathProgramCache]: Analyzing trace with hash 959752274, now seen corresponding path program 1 times [2022-09-20 22:55:38,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:55:38,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743193504] [2022-09-20 22:55:38,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:55:38,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:55:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:55:38,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:55:38,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:55:38,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743193504] [2022-09-20 22:55:38,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743193504] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:55:38,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876035645] [2022-09-20 22:55:38,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:55:38,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:55:38,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:55:38,847 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:55:38,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-20 22:55:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:55:38,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 21 conjunts are in the unsatisfiable core [2022-09-20 22:55:38,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:55:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:55:39,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 22:55:39,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:55:39,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876035645] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 22:55:39,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 22:55:39,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-09-20 22:55:39,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748038857] [2022-09-20 22:55:39,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 22:55:39,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-09-20 22:55:39,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:55:39,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-09-20 22:55:39,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1516, Unknown=0, NotChecked=0, Total=1640 [2022-09-20 22:55:39,845 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 230 [2022-09-20 22:55:39,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 678 transitions, 5048 flow. Second operand has 41 states, 41 states have (on average 165.5121951219512) internal successors, (6786), 41 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:55:39,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:55:39,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 230 [2022-09-20 22:55:39,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:56:03,950 INFO L130 PetriNetUnfolder]: 10537/64140 cut-off events. [2022-09-20 22:56:03,950 INFO L131 PetriNetUnfolder]: For 446813/448635 co-relation queries the response was YES. [2022-09-20 22:56:07,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192692 conditions, 64140 events. 10537/64140 cut-off events. For 446813/448635 co-relation queries the response was YES. Maximal size of possible extension queue 1445. Compared 965831 event pairs, 2268 based on Foata normal form. 434/60822 useless extension candidates. Maximal degree in co-relation 192537. Up to 11145 conditions per place. [2022-09-20 22:56:07,417 INFO L137 encePairwiseOnDemand]: 203/230 looper letters, 760 selfloop transitions, 301 changer transitions 12/1354 dead transitions. [2022-09-20 22:56:07,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 1354 transitions, 14112 flow [2022-09-20 22:56:07,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-09-20 22:56:07,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2022-09-20 22:56:07,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 12713 transitions. [2022-09-20 22:56:07,425 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7469447708578143 [2022-09-20 22:56:07,425 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 12713 transitions. [2022-09-20 22:56:07,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 12713 transitions. [2022-09-20 22:56:07,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:56:07,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 12713 transitions. [2022-09-20 22:56:07,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 171.7972972972973) internal successors, (12713), 74 states have internal predecessors, (12713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:56:07,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 230.0) internal successors, (17250), 75 states have internal predecessors, (17250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:56:07,818 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 230.0) internal successors, (17250), 75 states have internal predecessors, (17250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:56:07,818 INFO L175 Difference]: Start difference. First operand has 593 places, 678 transitions, 5048 flow. Second operand 74 states and 12713 transitions. [2022-09-20 22:56:07,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 666 places, 1354 transitions, 14112 flow [2022-09-20 22:56:12,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 659 places, 1354 transitions, 12972 flow, removed 483 selfloop flow, removed 7 redundant places. [2022-09-20 22:56:12,156 INFO L231 Difference]: Finished difference. Result has 697 places, 893 transitions, 7911 flow [2022-09-20 22:56:12,156 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=4624, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=7911, PETRI_PLACES=697, PETRI_TRANSITIONS=893} [2022-09-20 22:56:12,157 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 487 predicate places. [2022-09-20 22:56:12,157 INFO L495 AbstractCegarLoop]: Abstraction has has 697 places, 893 transitions, 7911 flow [2022-09-20 22:56:12,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 165.5121951219512) internal successors, (6786), 41 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:56:12,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:56:12,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:56:12,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-09-20 22:56:12,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:56:12,358 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:56:12,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:56:12,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1199949360, now seen corresponding path program 3 times [2022-09-20 22:56:12,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:56:12,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081202783] [2022-09-20 22:56:12,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:56:12,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:56:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:56:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:56:12,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:56:12,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081202783] [2022-09-20 22:56:12,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081202783] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:56:12,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111044148] [2022-09-20 22:56:12,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-20 22:56:12,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:56:12,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:56:12,510 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:56:12,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-20 22:56:12,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-09-20 22:56:12,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 22:56:12,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 21 conjunts are in the unsatisfiable core [2022-09-20 22:56:12,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:56:12,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:56:12,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 22:56:13,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:56:13,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111044148] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 22:56:13,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 22:56:13,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-09-20 22:56:13,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764288498] [2022-09-20 22:56:13,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 22:56:13,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-09-20 22:56:13,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:56:13,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-09-20 22:56:13,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1440, Unknown=0, NotChecked=0, Total=1560 [2022-09-20 22:56:13,441 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 230 [2022-09-20 22:56:13,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 893 transitions, 7911 flow. Second operand has 40 states, 40 states have (on average 165.55) internal successors, (6622), 40 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:56:13,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:56:13,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 230 [2022-09-20 22:56:13,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:56:51,397 INFO L130 PetriNetUnfolder]: 12918/77171 cut-off events. [2022-09-20 22:56:51,397 INFO L131 PetriNetUnfolder]: For 625694/628078 co-relation queries the response was YES. [2022-09-20 22:56:56,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244876 conditions, 77171 events. 12918/77171 cut-off events. For 625694/628078 co-relation queries the response was YES. Maximal size of possible extension queue 1757. Compared 1190083 event pairs, 2712 based on Foata normal form. 682/73399 useless extension candidates. Maximal degree in co-relation 244683. Up to 11669 conditions per place. [2022-09-20 22:56:56,564 INFO L137 encePairwiseOnDemand]: 201/230 looper letters, 816 selfloop transitions, 438 changer transitions 10/1545 dead transitions. [2022-09-20 22:56:56,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 765 places, 1545 transitions, 17144 flow [2022-09-20 22:56:56,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-09-20 22:56:56,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2022-09-20 22:56:56,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 11842 transitions. [2022-09-20 22:56:56,569 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7461877756773787 [2022-09-20 22:56:56,569 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 11842 transitions. [2022-09-20 22:56:56,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 11842 transitions. [2022-09-20 22:56:56,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:56:56,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 11842 transitions. [2022-09-20 22:56:56,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 171.6231884057971) internal successors, (11842), 69 states have internal predecessors, (11842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:56:56,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 230.0) internal successors, (16100), 70 states have internal predecessors, (16100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:56:56,588 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 230.0) internal successors, (16100), 70 states have internal predecessors, (16100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:56:56,588 INFO L175 Difference]: Start difference. First operand has 697 places, 893 transitions, 7911 flow. Second operand 69 states and 11842 transitions. [2022-09-20 22:56:56,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 765 places, 1545 transitions, 17144 flow [2022-09-20 22:57:06,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 756 places, 1545 transitions, 15524 flow, removed 755 selfloop flow, removed 9 redundant places. [2022-09-20 22:57:06,154 INFO L231 Difference]: Finished difference. Result has 798 places, 1105 transitions, 10878 flow [2022-09-20 22:57:06,155 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=6802, PETRI_DIFFERENCE_MINUEND_PLACES=688, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=893, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=10878, PETRI_PLACES=798, PETRI_TRANSITIONS=1105} [2022-09-20 22:57:06,156 INFO L287 CegarLoopForPetriNet]: 210 programPoint places, 588 predicate places. [2022-09-20 22:57:06,156 INFO L495 AbstractCegarLoop]: Abstraction has has 798 places, 1105 transitions, 10878 flow [2022-09-20 22:57:06,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 165.55) internal successors, (6622), 40 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:57:06,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:57:06,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:57:06,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-09-20 22:57:06,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-09-20 22:57:06,372 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:57:06,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:57:06,372 INFO L85 PathProgramCache]: Analyzing trace with hash 2144362636, now seen corresponding path program 4 times [2022-09-20 22:57:06,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:57:06,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701308101] [2022-09-20 22:57:06,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:57:06,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:57:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:57:06,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:57:06,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:57:06,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701308101] [2022-09-20 22:57:06,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701308101] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:57:06,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081399906] [2022-09-20 22:57:06,544 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-20 22:57:06,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:57:06,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:57:06,545 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:57:06,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-09-20 22:57:06,617 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-20 22:57:06,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 22:57:06,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 21 conjunts are in the unsatisfiable core [2022-09-20 22:57:06,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:57:06,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:57:06,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 22:57:07,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:57:07,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081399906] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 22:57:07,429 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 22:57:07,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-09-20 22:57:07,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256581336] [2022-09-20 22:57:07,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 22:57:07,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-09-20 22:57:07,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:57:07,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-09-20 22:57:07,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1517, Unknown=0, NotChecked=0, Total=1640 [2022-09-20 22:57:07,432 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 230 [2022-09-20 22:57:07,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 798 places, 1105 transitions, 10878 flow. Second operand has 41 states, 41 states have (on average 165.5121951219512) internal successors, (6786), 41 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:57:07,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:57:07,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 230 [2022-09-20 22:57:07,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:57:56,126 INFO L130 PetriNetUnfolder]: 14597/90550 cut-off events. [2022-09-20 22:57:56,127 INFO L131 PetriNetUnfolder]: For 842981/846017 co-relation queries the response was YES. [2022-09-20 22:58:03,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297896 conditions, 90550 events. 14597/90550 cut-off events. For 842981/846017 co-relation queries the response was YES. Maximal size of possible extension queue 2175. Compared 1447783 event pairs, 3231 based on Foata normal form. 1037/86214 useless extension candidates. Maximal degree in co-relation 297666. Up to 13302 conditions per place. [2022-09-20 22:58:04,082 INFO L137 encePairwiseOnDemand]: 201/230 looper letters, 1114 selfloop transitions, 547 changer transitions 13/1955 dead transitions. [2022-09-20 22:58:04,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 887 places, 1955 transitions, 24003 flow [2022-09-20 22:58:04,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-09-20 22:58:04,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-09-20 22:58:04,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 15499 transitions. [2022-09-20 22:58:04,091 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.748743961352657 [2022-09-20 22:58:04,091 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 15499 transitions. [2022-09-20 22:58:04,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 15499 transitions. [2022-09-20 22:58:04,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:58:04,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 15499 transitions. [2022-09-20 22:58:04,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 172.2111111111111) internal successors, (15499), 90 states have internal predecessors, (15499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:04,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 230.0) internal successors, (20930), 91 states have internal predecessors, (20930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:04,120 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 230.0) internal successors, (20930), 91 states have internal predecessors, (20930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:04,120 INFO L175 Difference]: Start difference. First operand has 798 places, 1105 transitions, 10878 flow. Second operand 90 states and 15499 transitions. [2022-09-20 22:58:04,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 887 places, 1955 transitions, 24003 flow